Techical delivery conditions.pdf

TECHNICAL DELIVERY CONDITIONS

JSC DNEPROSPETSSTAL

Registered document number:

U DSS 004-2007

(supersedes TU DSS 004-2002) For Metal Products of Structural

Carburizing and Heat treatable Steel

Reasons for revision: Extension of the document with standard requirements of DIN EN 10083 -1, 2, 3, Revision 2006. Diversifying of steel grade and product range. Supplement with references to EN 10308, EN 10228-3.

List of revised supplements:

Preface supplemented with reference to DIN EN 10083 -1, 2, 3. Section 1: supplemented with product range of Landgraf line. Section 2: supplemented with detailed way of special surface conditioning. Section 3: C25E, C25R, C30E,C30R, 38CrS2, 46CrS2, 36CrNiMo4 steel grades deleted and

35NiCr6, 39NiCrMo3, 30NiCrMo16-6 included; chemical analysis requirements specified.

Section 4: supplemented with product range of Landgraf line. Section 5: requirements specified due to diversifying of steel grade and product range and

reference introduction to EN10308, EN10228-3. Sections 6, 9: requirements specified due to diversifying of steel grade and product range and

introduction of new US-test requirements. Section 10: Reference Documents is supplemented.

APPROVED: Deputy Director General for Technology I.N. Logozinsky

___ __________ 2007

This document is confidential and is supplied on condition that it must only be used for the purpose for which it has been supplied and must not be copied, exhibited nor communicated to third parties without the consent of JSC Dneprospetsstal whose property it remains.

JSC Dneprospetsstal Technical Delivery Conditions DSS 004-2007 (2010)

Metal products of structural carburizing and heat treatable steel Page 2

TECHNICAL DELIVERY CONDITIONS DSS 004-2007 Metal products of structural carburizing and heat treatable steel

(revised 2010 amendment 1 included)

The present technical delivery conditions are harmonized with the requirements specified in DIN EN 10083-1, 2, 3, DIN EN 10084 and cover technical requirements for metal products exported by JSC Dneprospetsstal. The present technical delivery conditions shall constitute an integral part of the contract with customers abroad.

1. SCOPE 1.1 Hot-rolled round bars 20-280 mm in diameter with turned surface. 1.2 Hot-rolled round bars 8-130 mm in diameter without turning. 1.3 Hot-rolled billet 45-250 mm in square side after spot grinding or complete surface

conditioning. 1.4 Blooms 190-280 mm in side with ground surface. 1.5 Hot-rolled square bars 8-100 mm in square side with spot ground surface. 1.6 Hot-rolled flat bars 6-12 x 40-50 mm and 40 x 150 mm in cross section with spot

ground surface. 1.7 Forged round bars 80-550 mm in diameter with turned surface. 1.8 Forged square bars 80-450 mm in square side with ground, planed or milled surface. 1.9 Forged flat bars 30-300 mm in thickness and 80-800 mm in width with ground,

planed or milled surface. 1.10 Cold-drawn round bars 2,0-50,0 mm in diameter. 1.11 Round bars 2,00-50,00 mm in diameter with ground and polished surface. 1.12 Hot rolled round bars 12,00-200,00 mm in diameter with ground and polished

surface processed on Landgraf automatic line. 1.13 Wire 2,0-12,5 mm in diameter.

2. MANUFACTURE Steel is melted in electric arc furnaces with further vacuum degassing or produced by ESR-method. Ingots are subjected to hot working on rolling mills, presses, hammers or GFM-forging machines. Semi-product is subjected to cold drawing. Ground and polished surface of bars 2,00-50,00mm in diameter can be achieved in any process of rolling skin removing. Ground and polished surface of hot rolled bars 12,00-200,00 mm in diameter is provided on Landgraf automatic line. On agreement between sides stated in the specification it is permitted to produce steel in electric arc furnaces without vacuum degassing.

3. STEEL GRADES Steel grades and chemical composition of carburizing steel in accordance with DIN EN 10084, structural non-alloy steel (special steel) in accordance with



DIN EN 10083-2, structural alloy steel (without Boron) in accordance with DIN EN 10083-3 shall meet the requirements specified in Tables 1-3:

Table 1. Steel grades and chemical composition of carburizing steel to DIN EN 10084

(revision 2010 acc. to the amendment 1)

Steel grade Weight percent by elements, %

DIN EN 10084 GOST C Si Mn P S Cr Mo Ni Other

elements

C10E (1.1121)

10 0,07 0,13

max 0,40

0,30 0,60

max 0,035

max 0,035

- - - - C10R

(1.1207) 10-

0,020 0,040

C15E (1.1141)

15 0,12 0,18

max 0,40

0,30 0,60

max 0,035

max 0,035

- - - - C15R

(1.1140) 15-

0,020 0,040

C16E (1.1148)

15 0,12 0,18

max 0,40

0,60 0,90

max 0,035

max 0,035

- - - - C16R

(1.1208) 15-

0,020 0,040

17r3 (1.7016)

17 0,14 0,20

max 0,40

0,60 0,90

max 0,025

max 0,035 0,70

1,00 - - -

17CrS3 (1.7014)

17- 0,020 0,040

28r4 (1.7030)

28 0,24 0,31

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 - - -

28CrS4 (1.7036)

28- 0,020 0,040

16MnCr5 (1.7131)

16 0,14 0,19

max 0,40

1,00 1,30

max 0,025

max 0,035 0,80

1,10 - - -

16MnCrS5 (1.7139)

16- 0,020 0,040

16MnCrB5 (1.7160)

16 0,14 0,19

max 0,40

1,00 1,30

max 0,025

max 0,035

0,80 1,10

- - 0,0008

0,005 20MnCr5 (1.7147)

20 0,17 0,22

max 0,40

1,10 1,40

max 0,025

max 0,035 1,00

1,30 - - -

20MnCrS5 (1.7149)

20- 0,020 0,040

18rMo4 (1.7243)

18 0,15 0,21

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 0,15 0,25

- - 18CrMoS4

(1.7244) 18-

0,020 0,040

22CrMoS3-5 (1.7333)

22- 0,19 0,24

max 0,40

0,70 1,00

max 0,025

0,020 0,040

0,70 1,00

0,40 0,50

- -

20MoCr3 (1.7320)

20 0,17 0,23

max 0,40

0,60 0,90

max 0,025

max 0,035 0,40

0,70 0,30 0,40

- - 20MoCrS3

(1.7319) 20-

0,020 0,040

20MoCr4 (1.7321)

20 0,17 0,23

max 0,40

0,70 1,00

max 0,025

max 0,035 0,30

0,60 0,40 0,50

- - 20MoCrS4

(1.7323) 20-

0,020 0,040



Table 1 (continued)

Steel grade Weight percent by elements, %

DIN EN 10084

GOST C Si Mn P S Cr Mo Ni Other elements

16Nir4 (1.5714)

16 0,13 0,19

max 0,40

0,70 1,00

max 0,025

max 0,035 0,60

1,00 -

0,80 1,10

- 16NiCrS4 (1.5715)

16- 0,020 0,040

10NiCr5-4 (1.5805)

101 0,07 0,12

max 0,40

0,60 0,90

max 0,025

max 0,035

0,90 1,20

- 1,20 1,50

-

18NiCr5-4 (1.5810)

181 0,16 0,21

max 0,40

0,60 0,90

max 0,025

max 0,035

0,90 1,20

- 1,20 1,50

-

17CrNi6-6 (1.5918)

1722 0,14 0,20

max 0,40

0,50 0,90

max 0,025

max 0,035

1,40 1,70

- 1,40 1,70

-

15NiCr13 (1.5752)

173 0,14 0,20

max 0,40

0,40 0,70

max 0,025

max 0,035

0,60 0,90

- 3,00 3,50

-

20NirMo2-2 (1.6523)

20 0,17 0,23

max 0,40

0,65 0,95

max 0,025

max 0,035 0,35

0,70 0,15 0,25

0,40 0,70

- 20NirMoS2-2

(1.6526) 20-

0,020 0,040

17NirMo6-4 (1.6566)

171 0,14 0,20

max 0,40

0,60 0,90

max 0,025

max 0,035 0,80

1,10 0,15 0,25

1,20 1,50

- 17NirMoS6-4

(1.6569) 171-

0,020 0,040

20NirMoS6-4 (1.6571)

202- 0,16 0,23

max 0,40

0,50 0,90

max 0,025

0,020 0,040

0,60 0,90

0,25 0,35

1,40 1,70

-

18CrNiMo7-6 (1.6587)

1822 0,15 0,21

max 0,40

0,50 0,90

max 0,025

max 0,035

1,50 1,80

0,25 0,35

1,40 1,70

-

14NiCrMo13-4 (1.6657)

143 0,11 0,17

max 0,40

0,30 0,60

max 0,025

max 0,035

0,80 1,10

0,20 0,30

3,00 3,50

-

20NirMo13-4 (1.6660)

203 0,17 0,22

max 0,40

0,30 0,60

max 0,025

max 0,035

0,80 1,20

0,30 0,50

3,00 3,50

-

Notes: 1. On agreement between the parties stated in the specification, all steel grades shall have sulfur weight

percent of 0.020-0.035 %. In this case, GOST grade designations will have suffix 1. 2. Weight percent of residual elements not stated in Table 1 shall be maximum as follows:

Cu 0.30 %, Ni 0.30 %, W 0.15%, Mo 0.10%, V 0.10% Al 0.06%, Ti 0.03%, Cr 0.30%. 3. For ESR-steel, DIN EN grade designation will have the suffix ESR, and GOST grade designation

will have the suffix . Sulfur weight percent for ESR-steel shall not exceed 0.015%, and phosphorus weight percent is to be max 0.025%.

4. Melting process shall be stated in the Specification. 5. On customer request stated in the Specification, DIN EN grade name and designation shall have

suffixed heat treatment designation + or +N , i.e. 17NiCrMo6-4+A (1.6566+A, 10E+N (1.1121+N)).

Table 2. Steel grades and chemical composition of structural non-alloy steel (special steels) according to DIN EN 10083-2

Steel grades Weight percent by elements, %

DIN EN 10083-2

GOST C Si Mn P S Cr Mo Ni Other

elements

C22E (1.1151)

20 0,17 0,24

max 0,40

0,40 0,70

max 0,030

max 0,035 max

0,40 max 0,10

max 0,40

Cr+Mo+Ni

max 0,63 C22R

(1.1149) 20-

0,020 0,040



Table 2 continued


DIN EN 10083-2


elements

C35E (1.1181)

35 0,32 0,39

max 0,40

0,50 0,80

max 0,030

max 0,035 max

0,40 max 0,10

max 0,40

Cr+Mo+Ni

max 0,63 C35R

(1.1180) 35-

0,020 0,040

C40E (1.1186)

40 0,37 0,44

max 0,40

0,50 0,80

max 0,030

max 0,035 max

0,40 max 0,10

max 0,40

Cr+Mo+Ni

max 0,63 C40R

(1.1189) 40-

0,020 0,040

C45E (1.1191)

45 0,42 0,50

max 0,40

0,50 0,80

max 0,030

max 0,035 max

0,40 max 0,10

max. 0,40

Cr+Mo+Ni

max 0,63 C45R

(1.1201) 45-

0,020 0,040

C50E (1.1206)

50 0,47 0,55

max 0,40

0,60 0,90

max 0,030

max 0,035 max

0,40 max. 0,10

max 0,40

Cr+Mo+Ni

max 0,63 C50R

(1.1241) 50-

0,020 0,040

C55E (1.1203)

55 0,52 0,60

max. 0,40

0,60 0,90

max. 0,030

max. 0,035 max

0,40 max 0,10

max. 0,40

Cr+Mo+Ni

max. 0,63 C55R

(1.1209) 55-

0,020 0,040

C60E (1.1221)

60 0,57 0,65

max 0,40

0,60 0,90

max 0,030

max 0,035 max

0,40 max. 0,10

max. 0,40

Cr+Mo+Ni

max. 0,63 C60R

(1.1223) 60-

0,020 0,040

28Mn6 (1.1170)

28 0,25 0,32

max 0,40

1,30 1,65

max 0,030

max 0,035

max. 0,40

max 0,10

max 0,40

Cr+Mo+Ni

max 0,63

Notes: 1. On agreement between sides stated in the specifications all steel grades shall be produced with Sulfur content 0,020 -0,035%. In this case in the steel grade designation according to GOST the index 1 to be added in hyphen. 2. Residual element content (for elements not shown in Table 2) shall not exceed the following: Cu 0.30%, W 0.15%, V 0.10%, Al 0,06%, Ti 0,03%. 3. For steel produced by ESR-method in the steel grade designations according to GOST the letter to be added in hyphen. For grade designations according to DIN EN ESR is to be added. In electro slag remelted steels Sulfur content shall not exceed 0,015% and Phosphor shall not exceed 0,025%. 4. Melting practice shall be stated in the specification. 5. On customer request stated in the specification at the end of steel grade name and steel grade number according to DIN EN a heat treatment symbol +A or +N shall be added (e.g. C45E +A (1.1191+A), C45E +N (1.1191 + N)).

Table 3. Steel grades and chemical composition of structural alloy steel (without Boron) according to DIN EN 10083-3


DIN EN 10083-3


elements

38r2 (1.7003)

38 0,35 0,42

max. 0,40

0,50 0,80

max 0,025

max 0,035

0,40 0,60

- - -



Table 3 continued


DIN EN 10083-3


elements

46r2 (1.7006)

46 0,42 0,50

max 0,40

0,50 0,80

max 0,025

max 0,035

0,40 0,60

- - -

34r4 (1.7033)

34 0,30 0,37

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 - - -

34rS4 (1.7037)

34- 0,020 0,040

37r4 (1.7034)

37 0,34 0,41

.. 0,40

0,60 0,90

.. 0,025

.. 0,035 0,90

1,20 - - -

37rS4 (1.7038)

37- 0,020 0,040

41r4 (1.7035)

41 0,38 0,45

max 0,40

0,60 0,90

max 0,025

max. 0,035 0,90

1,20 - - -

41rS4 (1.7039)

41- 0,020 0,040

25rMo4 (1.7218)

25 0,22 0,29

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 0,15 0,30

- - 25rMoS4 (1.7213)

25- 0,020 0,040

34rMo4 (1.7220)

34 0,30 0,37

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 0,15 0,30

- - 34rMoS4 (1.7226)

34- 0,020 0,040

42rMo4 (1.7225)

42 0,38 0,45

max 0,40

0,60 0,90

max 0,025

max 0,035 0,90

1,20 0,15 0,30

- - 42rMoS4 (1.7227)

42- 0,020 0,040

50rMo4 (1.7228)

50 0,46 0,54

max 0,40

0,50 0,80

max 0,025

max. 0,035

0,90 1,20

0,15 0,30

- -

34rNiMo6 (1.6582)

3422 0,30 0,38

max 0,40

0,50 0,80

max 0,025

max 0,035

1,30 1,70

0,15 0,30

1,30 1,70

-

30rNiMo8 (1.6580)

3022 0,26 0,34

max 0,40

0,50 0,80

max 0,025

max 0,035

1,80 2,20

0,30 0,50

1,80 2,20

-

35NiCr6 (1.5815)

351 0,30 0,37

max 0,40

0,60 0,90

max 0,025

max 0,025

0,80 1,10

- 1,20 1,60

-

36NiCrMo16 (1.6773)

3624 0,32 0,39

max 0,40

0,50 0,80

max. 0,025

max 0,025

1,60 2,00

0,25 0,45

3,60 4,10

-

39NiCrMo3 (1.6510)

39 0,35 0,43

max 0,40

0,50 0,80

max 0,025

max 0,035

0,60 1,00

0,15 0,25

0,70 1,10

-

30NiCrMo16-6 (1.6747)

3014 0,26 0,33

max. 0,40

0,50 0,80

max 0,025

max. 0,025

1,20 1,50

0,30 0,60

3,30 4,30

-

51CrV4 (1.8159)

50 0,47 0,55

max 0,40

0,70 1,10

max 0,025

max 0,025

0,90 1,20

- - 0,10V

0,25 Notes: 1. On agreement between sides stated in the specifications all steel grades (except of 35NiCr6 (1.5815), 36NiCrMo16(1.6773), 30NiCrMo16-6(1.6747), 51CrV4( 1.8159) steel grades may be produced with Sulfur content 0,020 -0,035%. In this case in the steel grade designation according to GOST the index 1 to be added in hyphen. 2. Residual element content (for elements not shown in Table 3) shall not exceed the following: Cu 0.30%, Ni -0,30%, Mo-0,10%, W 0.15%, V 0.10%, Al 0,06%, Ti 0,03%.



3. For steel produced by ESR-method in the steel grade designations according to GOST the letter to be added in hyphen. For grade designations according to DIN EN ESR is to be added. In electro slag re-melted steels Sulfur content shall not exceed 0,015% and Phosphor shall not exceed 0,020%. 4. Melting practice shall be stated in the specification. 5. On customer request stated in the specification at the end of steel grade name and steel grade number according to DIN EN a heat treatment symbol +A or +N shall be added (e.g. 42CrMo4 +A (1.7225 +A).

In finished product chemical composition variations shall not exceed the values shown in Tables 4 - 6.

Table 4. Permissible composition variations in finished product of carburizing steel according to DIN EN 10084


Element Weight percent by elements in

steel, % Permissible variations, %

Carbon 0,31 0,02 Silicon 0,40 +0,03

Manganese 1,00

1,00 1,40 0,04 0,05

Phosphor 0,035 +0,005

Sulfur 0,035

0,020-0,040 +0,005 0,005

Chromium 1,80 0,05

Molybdenum 0,30

0,30 0,50 0,03 0,04

Nickel 2,00

2,00 3,50 0,05 0,07

Boron 0,0050 0,0005

Table 5. Permissible chemical composition variations in finished product

of structural non-alloy steel ( special steel) according to DIN EN 10083-2



Carbon 0,55

0,55 0,65 0,02 0,03

Silicon 0,40 +0,03

Manganese 1,00

1,00 1,65 0,04 0,05

Phosphor 0,030 +0,005

Sulfur 0,035

0,020-0,040 +0,005 0,005

Chromium 0,40 +0,05

Molybdenum 0,10 +0,03

Nickel 0,40 +0,05



Table 6. Permissible variations in chemical composition in finished product of structural alloy steel (without boron) according to DIN EN 10083-3



Carbon 0,55 0,02 Silicon 0,40 +0,03

Manganese 1,00

1,00 1,10 0,04 0,05

Phosphor 0,025 +0,005

Sulfur 0,035

0,020-0,040 +0,005 0,005

Chromium 2,00

2,00 2,20 0,05 0,10

Molybdenum 0,30

0,30 0,60 0,03 0,04

Nickel 2,00

2,00 4,30 0,05 0,07

Vanadium 0,25 0,02

4. PRODUCT RANGE

4.1 Hot-rolled round bars 20-280 mm in diameter with turned surface Bar diameter and utmost deviations from the diameter shall meet the requirements of Table 7.

Table 7. Diameter and utmost deviations from it for hot-rolled round bars with turned surface

Diameter, mm Utmost deviations, mm


Lot 1 Lot 2 Lot 1 Lot 2

20-28 0,25 +0,5/-0,0 98-115 0,70 +1,4/-0,0

29-48 0,30 +0,6/-0,0 116-155 1,00 +2,0/-0,0

49-58 0,40 +0,8/-0,0 156-180 1,25 +2,5/-0,0

59-79 0,50 +1,0/-0,0 181-280 1,50 +3,0/-0,0

80-97 0,60 +1,2/-0,0 Notes: 1. The lot number shall be stated in the specification. 2. Hot-rolled round bars with turned surface of Ni-alloyed steel are furnished up to 230 mm in

diameter. If agreed upon by the purchaser and manufacturer and stated in specifications, hot -rolled bars up to 260 mm in diameter of Ni-alloyed steel may be delivered.

Out-of-round shall not exceed 50% of the sum of utmost deviations from the diameter. Straightness deviations shall be 2,0 mm max per 1 m of length. Bar ends shall be straight cut. Burrs and centering holes are not allowed. Bars processed on a straightening machine with hyperboloid rolls are not subject to rejection on bar end meniscus. Inclination from the straight cut shall not exceed 0,1 of bar diameter. Bars shall be 3,0-6,0 m in length with the utmost deviation from the length 100 mm. Actual bar length shall be stated in the specification.



4.2 Hot-rolled round bars 8-130 mm in diameter, without turning Bar diameter and utmost deviations from it shall be as shown in Table 8.

Table 8. Diameter and utmost deviations from it for hot-rolled round bars without turning


lot 1 lot 2

8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 +0,3/-0,5 +0,6/-0,0 20, 21, 22, 23, 24, 25 +0,4/-0,5 +0,8/-0,0 26, 27, 28, 29, 30 +0,3/-0,7 +0,9/-0,0 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 45, 48 +0,4/-0,7 +1,1/-0,0 50, 52, 55, 56 +0,4/-1,0 +1,4/-0,0 58 +0,4/-1,0 60, 63, 65, 70, 73, 75 +0,5/-1,1 +1,6/-0,0 62, 68, 78 +0,5/-1,1 80, 85, 90, 95 +0,5/-1,3 +1,8/-0,0 83, 88, 93, 98 +0,5/-1,3 100, 105, 110, 115 +0,6/-1,7 +2,3/-0,0 103,5; 108,5; 113,5; 118,5 +0,6/-1,7 120, 125, 130 +0,8/-2,0 +2,8/-0,0 123,5; 128,5 +0,8/-2,0 Note: a lot number shall be stated in the specification.

Out-of-round shall not exceed 50% of the total tolerance on diameter. Straightness deviations of annealed bars shall be max 2,0 mm per 1 m of length. For not annealed bars up to 80 mm in diameter straightness deviations shall be max 4,0 mm/m; for bars 80 mm (and over) in diameter straightness deviations shall be max 2,5 mm per 1m of length. Bar ends shall be straight cut and deburred. Squeezed ends not exceeding the utmost plus deviations from the diameter are permitted. For bars from 8 up to19 mm in diameter inclination from the cut shall not exceed 2 mm; for bars from 20 up to 130 mm in diameter inclination from the cut shall not exceed 0,1 of diameter. The diameter and out-of-round of bars shall be measured at a distance not less than 150 mm from the bar end. Bars shall be 2,0-6,0 m 100 mm in length. Actual length is to be stated in the specification.

4.3 Hot-rolled billets 45-250 mm in square side Dimensions of square billets and utmost deviations from them shall meet the requirements of Table 9. Convexity, concavity and the difference between any two billet sides shall not exceed the total tolerance on square side. The difference between the diagonals at the same cross section shall not exceed 0,7 of the total tolerance on the side. Convexity, concavity and the difference between any two billet sides shall not exceed the total tolerance on square side.



Table 9. Dimensions of hot-rolled square billets and utmost deviations

Billet side, mm Corner radius, mm Utmost deviations from the

square side, mm

45, 50 7 1,2 60, 65, 70 9 1,6 75, 80, 90 12 2,0 100, 105 15 2,4 110,120, 125 18 2,7 130, 135, 140, 150 21 3,2 160, 170, 180 25 3,9 230, 240, 250 35 5,2 Note: corner radius is given for shaping pass setting only and is not measured on billet.

The difference between the diagonals at the same cross section shall not exceed 0,7 of the total tolerance on the side. Straightness deviation shall not exceed 5 mm per 1m of length. Overall bow shall not exceed the product of permissible straightness deviation value multiplied by the total length value in meters. Twisting around the longitudinal axle shall not exceed 3 degree/m multiplied by billet length (in meters), but this value shall be 15 degree max. Billet ends shall be cut and deburred. The inclination from the cut shall be 8 mm. Squeezed ends after shearing are acceptable. Billets shall be 2,0-6,0 m in length with utmost deviations from the length 100 mm. Actual length shall be stated in the specifications. When agreed upon by the parties and stated in the specification, it is permitted to supply billets up to 9,0 m in length.

4.4 Blooms 190-280 mm in side size Bloom dimensions and utmost deviations from them shall meet the requirements of Table 10.

Table 10. Dimensions of blooms and utmost deviations from them

Bloom side, mm Corner radius, mm Utmost deviation from bloom

side, mm

190 25 6,0 200, 210 30 6,0 220, 230 35 6,0 240, 250 35 7,0

260 40 7,0 270, 280 40 8,0

Note: corner radius is given for shaping pass setting only and is not measured on a bloom.

Bloom sides are to be straight or concave. Blooms with convexity of two opposite sides not exceeding permissible deviations from the bloom side are acceptable. The central part of the bloom with the width min 1/3 of bloom side shall be straight or concave.



Straightness deviation shall not exceed 10mm per 1m of length. Overall bow shall not exceed permissible straightness deviation value multiplied by the total length value in meters. Twisting around the longitudinal axle shall not exceed 3 degree/m multiplied by the bloom length (in meters). Bloom ends shall be straight cut and without burrs. The inclination from the cut shall not exceed 0,1 of bloom side. Squeezed ends after cutting are acceptable. Blooms shall be 2,0-6,0 m in length with utmost deviations from the length 100 mm. Actual lengths shall be stated in the specifications.

4.5 Hot-rolled square bars 8-100 mm in square side Square side and utmost deviations from it shall meet the requirements of Table 11. The difference between the diagonals at the same cross section shall not exceed the double sum of utmost deviations from the square side for bars up to 20 mm in square side; for bars over 20 mm in square side it shall not exceed the sum of utmost deviations from the square side. Edge chamfering shall not exceed 0,15 of square side.

Table 11. Dimensions of hot-rolled square bars and utmost deviation from them

Square side, mm Utmost deviations from the square side, mm

Lot 1 Lot 2

8, 9, 10, 12, 13, 14, 15, 16, 17, 18 +0,3/-0,5 +0,6/-0,0 22, 25 +0,4/-0,5 +0,8/-0,0 28, 30 +0,3/-0,7 +0,9/-0,0 32, 35 +0,4/-0,7 +1,1/-0,0 45, 50 +0,4/-1,0 +1,4/-0,0 60, 65, 70, 75 +0,5/-1,1 +1,6/-0,0 80, 90 +0,5/-1,3 +1,8/-0,0 100 +0,6/-1,7 +2,3/-0,0 Note: a lot number shall be stated in the specification

Straightness deviations shall not exceed 0,5% of length for bars up to 25 mm (incl.) in square side; for bars over 25 mm in square side the deviations shall not exceed 0,4% of the length. Twisting around longitudinal axle of square bars shall not exceed 4 degree/m multiplied by bar length (in meters), but it is to be 24 degrees max for bars up to 14 mm in square side. For bars over 14 up to 50mm in square side twisting shall not exceed 3 degree per meter multiplied by the bar length (in meters), but it is to be max 18 degrees; for bars over 50 mm in square side twisting shall not exceed 3 degree per meter multiplied by the bar length (in meters) but it is to be 15 degrees max. Bar ends shall be straight cut. The inclination from the cut shall not exceed 2 mm for bars 8-18 mm in square side; for bars 22-100mm in square side the inclination from the cut shall not exceed 0,1 of square side. Squeezed ends and burrs not exceeding the utmost plus deviation from the square side are acceptable. Bar sides and difference between the diagonals shall be measured at a distance 150 mm min from the bar end.



Bars are to be 3,0-6,0 m in length with utmost deviations from the length 100mm. Actual length shall be stated in the specification. On agreement between sides stated in the specification it is permitted to supply bars up to 9,0 m in length. 4.6 Hot-rolled flat bars 6-12 x 40-50 mm and 40 x 150 mm in size with spot ground surface Flat bar dimensions (S x B, where S = thickness, B = width) and utmost deviations from them shall be in accordance with requirements of Table12.

Table 12. Dimensions of hot-rolled rectangular bars and utmost deviations from them

Section size (S x B), mm

Utmost deviations, mm

Lot 1 Lot 2

From thickness From width From thickness From width

6 40 +0,3/-0,5 +0,5/-1,0 +0,5/-0,0 +1,8/-0,0 8 45 +0,2/-0,5 +0,5/-1,0 +0,5/-0,0 +1,8/-0,0 10 45 +0,2/-0,5 +0,5/-1,0 +0,6/-0,0 +1,8/-0,0 12 45 +0,2/-0,5 +0,5/-1,0 +0,6/-0,0 +2,0/-0,0 6 50 +0,3/-0,5 +0,5/-1,0 +0,5/-0,0 +2,0/-0,0 8 50 +0,2/-0,5 +0,5/-1,0 +0,5/-0,0 +2,0/-0,0

40 150 +0,2/-1,6 +1,2/-2,8 - - Note: a lot number is stated in the specification.

Convexity or concavity of narrow sides is acceptable. Convexity shall not exceed the utmost deviation from the width and concavity shall not reduce the minimal size limits. The difference between the diagonals shall not exceed the total utmost deviation from the width. Flat bars are to be supplied with sharp edges. Edge chamfering not exceeding 0,20 of the thickness is permitted. Corner radius is given only for shaping pass setting and is not measured on the bar. Overall bow shall not exceed 0,5% of the length. Non- flatness shall be max 0,5% of the length. Bar ends shall be straight cut. The inclination from the cut shall not exceed 0,1 of the thickness. The thickness and the width shall be measured at a distance 150 mm min from the bar end. Flat bars are to be 2,0 - 4,0 m in length with utmost deviations from the length 100 mm.

4.7 Forged round bars 80-550 mm in diameter with turned surface Bar diameter and utmost deviations from the diameter shall be in accordance with Table 13. Table 13. Diameter and utmost deviations from it for forged round bars with turned surface

Diameter, mm 80-97 98-115 116-155 156-180 181-500 501-530 531-550

Utmost deviations, mm

+1,2 -0,0

+1,4 -0,0

+2,0 -0,0

+2,5 -0,0

+3,0 -0,0

+4,0 -0,0

+5,0 -0,0



Out-of-round shall not exceed the total tolerance on diameter. Straightness deviation shall be 2,0mm max per 1m of length. Bar ends shall be straight cut, without burrs and centering holes. Inclination from the cut shall not exceed 0,1 of bar diameter. Bar length shall be 2,0-6,0 m with utmost deviations from the length 100 mm. Actual length shall be stated in the specification. 4.8 Forged square bars 80-450 mm in square side with ground, planed or milled surface Square side sizes and utmost deviations from them shall be in accordance with Table 14. Table 14. Dimensions of forged square bars and utmost deviations from them

Square side, mm Utmost deviations, mm

80, 85 +3,0 / -0,0 90 +3,5 / -0,0 100, 105 +3,5 (+3,5) / -0,0 110, 115 +4,0 (+4,0) / -0,0 120, 125, 130, 135, 140, 145 +4,5 (+4,5) / -0,0 150 +5,0 (+5,0) / -0,0 180 +7,0 (+5,0) / -0,0 185-200 +8,0 (+5,0) / -0,0 205-450 +10,0 (+5,0) / -0,0 Note: values in brackets are given for bars with planed or milled surface; values without brackets are for bars with ground surface.

The difference between the diagonals at the same cross section shall not exceed 5% of square side. Forged square bars shall have sharp edges. Edge chamfering not exceeding 3% of square side is permitted. On agreement between sides stated in the specification for bars up to 200 mm in square side permissible chamfering of longitudinal edges is to be 8-15 mm in width; for bars over 200 mm in square side permissible chamfering of longitudinal edges is to be 10-20 mm in width. Straightness deviation shall not exceed 10 mm on the whole length. Bar ends shall be straight cut. The inclination from the cut shall not exceed 0,1 of square side. Burrs and squeezed ends are not acceptable. Bars shall be 2,0-4,0 m in length with utmost deviations from the length 100mm.

4.9 Forged flat bars 30-300 mm in thickness and 80-800 mm in width, with ground, planed or milled surface Section sizes for bars 30-150 mm in thickness and 80-350 mm in width, as well as utmost deviations from them shall be in accordance with Table 15. The dimensions of bars 100-300 mm in thickness and 300-800 mm in width, as well as utmost deviations from them shall be in accordance with Table 16.



The difference between the diagonals at the same cross section shall not exceed the utmost deviations from the width. Flat bars shall have sharp edges. Edge chamfering not exceeding 0,030 of the bar width is permitted. On agreement between sides stated in the specification, for bars up to 200 mm in square side permissible chamfering of longitudinal edges is to be 8-15 mm in width; for bars over 200 mm in square side permissible chamfering of longitudinal edges is to be 10-20 mm in width.

Table 15. Dimensions of forged flat bars 30-150 x 80-350 mm and utmost deviations from them

Thickness, mm Width, mm Utmost deviations, mm

From thickness From width

30 64 80 119 120 179 180 200

+2,5/-0,0 +4,0/-0,0 +5,0/-0,0 +7,0/-0,0

65 89

80 119 120 179 180 214 215 249 250 284 285 300

+4,5/-0,0

+4,0/-0,0 +5,0/-0,0 +7,0/-0,0 +8,0/-0,0 +9,0/-0,0 +10,0/-0,0

90 150

90 119 120 179 180 214 215 249 250 284 285 344 345 350

+5,0/-0,0

+4,0/-0,0 +5,0/-0,0 +7,0/-0,0 +8,0/-0,0 +9,0/-0,0 +10,0/-0,0 +12,0/-0,0

Table 16. Dimensions of forged flat bars 100-300 x 300 -800 mm and tolerances on them

Thickness, mm Plus tolerance on

thickness, mm Width, mm

Plus tolerance on width, mm

100 +5,0 (+5,0) 300 +10,0 (+5,0) over 100 to 250 +7,0 (+5,0) over 300 to 600 +15,0 (+10,0) over 250 to 300 +10,0 (+5,0) over 600 to 800 +20,0 (+15,0)

Note: For flat bars with planed and milled surface tolerances are shown in brackets, for flat bars after complete surface conditioning tolerances are given without brackets.

Convexity or concavity of narrow sides is acceptable for the flat bars furnished with complete surface conditioning that have dimensions given in Table 16. The convexity shall not exceed utmost deviation from the width and the concavity shall not reduce nominal size limits. Non- flatness and overall bow of as-ground flat bars shall not exceed the following: - 0,25% of the length for flat bar sizes given in Table 15; - 0,4% of the length - for flat bar sizes given in Table 16. Non -flatness and overall bow of flat bars with planed and milled surface shall be 0,2% max of length. Twisting shall not exceed 0,3% of the length.



Bar ends shall be straight cut and deburred. Inclination from the cut shall not exceed 0,10 of thickness. Flat bars shall be 2,0-4,0 m in length with utmost deviations from the length 100mm.

4.10 Cold drawn round bars 2,0-50,0 mm in diameter Bar diameter and utmost deviations from it shall be in accordance with Table 17. Out-of-round shall not exceed one half of utmost deviation from diameter. Bar ends shall be straight cut. Bending and burrs at the ends are not acceptable.

Table 17. Diameter of cold-drawn bars and utmost deviations from it.

Diameter, mm 2,00 3,00

3,00 6,00

6,00 10,00

10,00 18,00

18,00 30,00

30,00 50,00

Utmost deviations, mm: For size tolerance h 11 -0,060 -0,075 -0,090 -0,110 -0,130 -0,160 For size tolerance h 12 -0,120 -0,150 -0,180 -0,210 -0,250

Note: Size tolerances shall be stated in the specification.

Squeezed ends and burrs are permitted if they do not exceed the nominal size limits. For bars up to 30 mm in diameter inclination from the cut shall not exceed 0,1 of diameter; for bars over 30 mm in diameter it shall not exceed 5,0 mm. Straightness deviation shall be max 0,2% of length. Depending on the diameter bar length and utmost deviations from the length shall conform to the values given in Table 18.

Table 18. Length and tolerances on it for cold-drawn round bars depending on their diameter

Diameter, mm Length, m Tolerance on length, mm

from 2,00 to 3,00 2.0 +50/-0 over 3,00 to 6,00 2,5 +50/-0 over 6,00 to 10,00 3,0 +50/-0 over 10,00 to13,00 3,0 4,5 +50/-0 over 13,00 to 50,00 up to 6,0 +50/-0

4.11 Round bars 2,00-50,00 mm in diameter with ground and polished surface Bar diameter and tolerances on diameter shall meet the requirements of Table 19.

Table 19. Diameter and tolerances on it for round bars with ground and polished surface

Diameter,mm 2,00- 3,00

ov. 3,00 to 6,00

ov. 6,00 to 10,00

ov.10,00 to 15,00

ov.15,00 to 18,00

ov.18,00 to 30,00

ov.30,00 to 34,00

ov.34,00 to 50,00

Tolerance on diameter, mm:

for size tolerance h9 -0,025 -0,030 -0,036 -0,043 for size tolerance k9 +0,025 +0,030 +0,036 +0,043 for size tolerance h10 -0,040 -0,048 -0,058 -0,070 -0,070 -0,084 -0,100 for size tolerance k10 +0,040 +0,048 +0,058 +0,070 +0,070 +0,084 +0,100 for size tolerance h11 -0,060 -0,075 -0,090 -0,110 -0,110 -0,130 -0,160 -0,160 for size tolerance k11 +0,060 +0,075 +0,090 +0,110 +0,110 +0,130 +0,160 +0,160 for size tolerance h12 -0,120 -0,150 -0,180 -0,180 -0,210 -0,250 -0,250 for size tolerance k12 +0,120 +0,150 +0,180 +0,180 +0,210 +0,250 +0,250 Note: Size tolerances shall be stated in the specification.



For bars 2,00-15,00 mm in diameter with size tolerance h9(k9), bars over 15,00 up to 34,00 mm in diameter with size tolerance h10 (k10), bars over 34,00 to 50,00 mm in diameter with size tolerance h11 (k11) it is permitted to deliver 20% of each item with size tolerance h10, h11, h12 correspondingly separately bundled. (See Table 20) Out-of-round shall not exceed one half of the utmost deviation from diameter. For bars up to 30,00 mm in diameter straightness deviations shall not exceed 0,5 mm/m; for bars over 30,00 mm in diameter straightness deviations shall not exceed 1,0 mm/m. Bar ends shall be straight cut without bending and burrs. Inclination from the cut shall be max 0,1 of diameter. Meniscus at the bar end after straightening/polishing is not subject to rejection.

Table 20. Diameter and tolerances on it for round bars with ground and polished surface

Diameter, mm Tolerance on diameter, mm

from 2,00 to 3,00 -0,040 (h10), +0,040 (k10) over 3,00 to 6,00 -0,048 (h10), +0,048 (k10) over 6,00 t 10,00 -0,058 (h10), +0,058 (k10) over 10,00 t 15,00 -0,070 (h10), +0,070 (k10) over 15,00 t 18,00 -0,110 (h11), +0,110 (k11) over 18,00 t 30,00 -0,130 (h11), +0,130 (k11) over 30,00 t 34,00 -0,160 (h11), +0,160 (k11) over 34,00 t 50,00 -0,250 (h12), +0,250 (k12)

Bars 2,00-13,00 mm in diameter shall be 2,0-3,2 m in length; bars over 13,00 mm up to 17,00 mm in diameter shall be 4,0-5,5 m in length and bars over 17,00 to 50,00mm mm in diameter shall be up to 6,0 m in length with utmost deviations from the length 50 mm.

4.12 Hot rolled round bars 12,00 200,00 mm in diameter with ground and polished surface processed on Landgraf automatic line. Bar diameter and tolerances on diameter shall conform to the requirements specified in Table 21. Outofround of bars (the difference between the largest and the smallest diameter in the same cross section) shall not exceed one half of utmost deviation from diameter. Straightness deviation of bars up to 30 mm inclusive in diameter shall not exceed 0,5 mm per 1 m of length , for bars over 30 mm it shall not exceed 1,0 mm per 1 m of length. Bar ends shall be straight cut and after that turned or milled. Inclination from the straight cut shall not exceed 0,1 of bar diameter. Bars up to 70,00 mm in diameter shall be one end chamfered. It is permitted to supply bars both ends chamfered.



Table 21. Diameter and tolerances on it for hot-rolled bars with ground and polished surface

processed on Landgraf automatic line.

Diameter, mm Tolerance on diameter for size tolerance, mm

h9 k9 h10 k10 h11 k11 From 12,00 to18,00 -0,043 +0,043 -0,070 +0,070 -0,110 +0,110 Over 18,00 to 30,00 -0,052 +0,052 -0,084 +0,084 -0,130 +0,130 Over 30,00to 50,00 -0,062 +0,062 -0,100 +0,100 -0,160 +0,160 Over 50,00 to 80,00 -0,074 +0,074 -0,120 +0,120 -0,190 +0,190 Over 80,00 to 120,00 -0,087 +0,087 -0,140 +0,140 -0,220 +0,220 Over 120,00 to 160,00 -0,100 +0,100 -0,160 +0,160 -0,250 +0,250 Over 160,00 to 180,00 - - -0,160 +0,160 -0,250 +0,250 Over 180,00 to 200,00 - - -0,185 +0,185 -0,290 +0,290 Notes:

1. Size tolerance shall be stated in the specification. 2. On agreement between sides stated in the specification it is permitted to supply 10% of bars

with size tolerance h9(k9), h10(k10) of each item with size tolerance h10 (k10) and h11(k11) correspondingly, separately bundled. Bundle tag with indicated utmost deviations shall have additional round mark 4 -5 mm in diameter in the right upper corner.

Bars shall be 3,0 -6,0 m in length with utmost deviation from the length +50 /-0,0 mm. Actual bar lengths may be agreed in the specification.

4.13 Wire 2,0-12,5 mm in diameter Wire diameter and utmost deviations from the diameter shall conform to the requirements specified in Table 22.

Table 22. Wire diameter and tolerances on it.

Diameter, mm 2,00-3,00 3,00-6,00 6,00-10,00 10,00-12,50

Tolerance on diameter, mm (size tolerance h11)

-0,060 -0,075 -0,090 -0,110

Out-of-round shall not exceed one half of the utmost deviation from the diameter. Coil ends shall be cut or broken without burrs. Coil inner diameter shall be 500 mm min. Coil weight may vary from 40 to 135 kg.

5. TECHNICAL REQUIREMENTS

5.1 Products shall be supplied in annealed, normalized condition or without heat treatment that should be agreed upon by the purchaser and the manufacturer and stated in the specification. All annealed products (annealing according to practice +A, EN 10083-1 and EN 10084) shall have hardness conforming to the values specified in Table 23.



Table 23. Hardness of metal products in annealed condition


Grade designation Hardness , max

Grade designation Hardness , max EN 10084 GOST EN 10083-2,3 GOST

C10E 10 131

C22E 20 156

C10R 10- C22R 20- C15E 15

143 C35E 35

183 C15R 15- C35R 35- C16E 15

156 C40E 40

197 C16R 15- C40R 40- 17r3 17

174 C45E 45

183 17CrS3 17- C45R 45- 28r4 28

217 C50E 50

207 28CrS4 28- C50R 50-

16MnCr5 16 207

C55E 55 229

16MnCrS5 16- C55R 55- 16MnCrB5 16 207 C60E 60

241 20MnCr5 20

217 C60R 60-

20MnCrS5 20- 28Mn6 28 223 18rMo4 18

207 38Cr2 38X 207

18CrMoS4 18- 46Cr2 46X 223 22CrMoS3-5 22- 217 34CR4 34X

223 20MoCr3 20

217 34CrS4 34X-

20MoCrS3 20- 37Cr4 37 235

20MoCr4 20 207

37rS4 37- 20MoCrS4 20- 41r4 41

241 16Nir4 16

217 41rS4 41-

16NiCrS4 16- 25rMo4 25M 212

10NiCr5-4 101 192 25rMoS4 25M- 18NiCr5-4 181 223 34rMo4 34M

223 17CrNi6-6 1722 229 34rMoS4 34M- 15NiCr13 173 229 42rMo4 42M

241 20NirMo2-2 20

212 42rMoS4 42M-

20NirMoS2-2 20- 50rMo4 50 248

17NirMo6-4 171 229

34rNiMo6 342H2 17NirMoS6-4 171- 30rNiMo8 302H2 248 20NirMoS6-4 202- 229 35Nir6 35H1 223 18CrNiMo7-6 1822 229 36NirMo16 36X2H4MA 269 14NiCrMo13-4 143 241 39NirMo3 39H 240 20NiCrMo13-4 203 255 30NirMo16-6 30X1H4M 270

51CrV4 50X 248

Note: Bars with ground and polished surface, cold-drawn bars and wire up to 5 mm (incl.) in diameter shall be delivered after tensile strength testing (without hardness testing). Tensile strength values shall be stated in the specification.

5.1 (added acc. to the amendment 1) On agreement between the parties stated in the Specification, metal products of steel grades C10E(1.1121), C10R(1.1207), C15E(1.1141), C15R(1.1140), C16E(1.1148), C16R(1.1208), 16MnCr5(1.7131), 16MnCrS5(1.7139), 16MnCrB5(1.7160), 20MnCr5(1.7147), and 20MnCrS5(1.7149)



shall be shipped as-normalized, after hardness test of finished product. Hardness of normalized products shall comply with requirements of Table 23.

Table 23. Hardness of normalized products

Steel grade Hardness,

DIN EN 10084 GOST

C10E(1.1121) C10R(1.1207)

10 10-

85-140

C15E(1.1141) C15R(1.1140)

15 15-

95-150

C16E(1.1148) C16R(1.1208)

15 15-

100-155

16MnCr5(1.7131) 16MnCrS5(1.7139)

16 16-

138-187

16MnCrB5(1.7160) 16 138-187 20MnCr5(1.7147)

20MnCrS5(1.7149) 20

20- 140-201

5.2 Surface condition of round and square bars, square billets, blooms, flat bars and wire shall conform to the following requirements. 5.2.1 Round bars 20-40 mm in diameter shall be delivered in turned or ground condition and bars over 40 to 550 mm in diameter shall be supplied in turned condition with surface roughness Rz 80 m max. On agreement between sides stated in the specification round bars 8-130mm in diameter may be delivered without turning, but after spot grinding of surface defects. Cracks, laps (forging folds), scabs, rolled/forged impurities, seams, rolled/forged crust, blisters are not allowed on the surface of round bars that are with or without turning. Local surface imperfections shall be removed by flat grinding. The width of grind-outs shall be minimum 5 times the depth. The depth of spot ground areas on turned bars shall not reduce the bar size under the minimally permissible. The depth of spot ground areas on round bars without turning shall not exceed 0,5 of the total utmost deviations from diameter for bars up to 80 mm in diameter; for bars 80-130 mm in diameter the depth shall not exceed the total utmost deviation from the diameter counting from actual size. Not more than 2 grind-outs of maximal depth are acceptable at the same cross section. Single marks, scratches, indentations and other surface defects of mechanical origin are acceptable on the surface of round bars without grinding if their depth does not exceed 0,5 of the total utmost deviations from the diameter counting from actual size. Welding repair or flash welding of surface imperfections is not permitted. 5.2.2 Flat and square bars and billets up to 100 mm (incl.) in square side or in thickness are delivered after spot grinding of surface defects. Flats, square bars and billets over 100 mm in square side or thickness are delivered after complete surface conditioning or in as-planed (milled) condition with surface roughness Rz not exceeding 100 m.



On agreement between sides stated in the specifications flat or square bars and billets over 100 mm in square side or thickness may be supplied after spot grinding of surface defects. Blooms shall be after complete surface conditioning with surface roughness Rz max 100 m. Surface conditioning practice shall be stated in the specification. Surface of flat and square bars, billets and blooms shall be free from cracks, laps, scabs, rolled/forged impurities, seams, rolled/forged crust, rolled/forged blisters. Local surface imperfections shall be removed by flat grinding; the width of flat grinding shall be at least 5 times the depth. For flat bars, square billets and bars up to 80 mm in square side or thickness the depth of grinding shall not exceed of the total utmost deviations from the thickness or square side. For flat bars, square billets and bars 80-100 mm in square side or thickness this depth shall not exceed the total utmost deviation from the square side or thickness. For flat bars, blooms, square billets and bars with ground surface over 100 mm in square (bloom) side or thickness the depth of grinding shall not exceed 5% of thickness or square (bloom) side counting from actual size. For planed and milled bars and flat bars the depth of grinding shall not reduce the size under minimally permissible one. Single marks, scratches and other defects of mechanical origin are permitted without flat grinding if their depth is: - 1,0 mm max - for flat bars, square bars and billets up to 100 mm in thickness or

square side; - 2,0 mm max for flat bars, square bars and billets 100-180 mm in thickness or

square side; - 2,5 mm max for flat bars, blooms, square bars and billets over 180 mm in

thickness or square (bloom) side. Welding of surface imperfections or repair by flash welding is not permitted. 5.2.3 Surface defects of mechanical origin are permitted on the surface of cold-drawn bars and wire if their depth does not exceed the utmost deviation from diameter. 5.2.4 Surface defects of mechanical origin are permitted on the surface of ground and polished bars if their depth does not exceed of utmost deviation from diameter. Bar surface roughness Ra shall be 2,5 m max. 5.2.5 Surface defects of mechanical origin are permitted on the surface of hot-rolled bars with ground and polished surface 12 -200mm in diameter, processed on Landgraf automatic line, if their depth does not exceed the following: - 0,040 mm max for bars 12,00 -80,00 mm in diameter with size tolerance h9(k9) and bars 12,00 -18,00 mm in diameter with size tolerance h10(k10); - one half of utmost deviation - for bars over 18,00 to 80, 00 mm in diameter with size tolerance h10(k10) and bars 12,00 -80,00 mm in diameter with size tolerance h11(k11), as well as bars over 80 to 200 mm in diameter with size tolerance h-9 h11( k9 k11). Surface roughness Ra shall be 1,4m max for bars to 130 mm and 4,0 m max for bars 130 mm and above.



5.3 Steel macrostructure determined on etched specimens (templates) shall be free from visible pipe cavity, porosity, blisters, cracks, slag inclusions, laminations, crust and flakes.

5.4 Austenitic grain size shall be 5-8 to ASTM E 112 or 2 numbers finer.

5.5 Non-metallic inclusions in steel shall be tested in accordance with DIN 50602, Method K. On agreement between sides stated in specification non-metallic inclusions may be evaluated in accordance with ASTM E 45, Method A.

5.5.1 The results of non-metallic inclusion evaluation performed in accordance with DIN 50602 (Method K) shall conform to the requirements stated in Table 24.

Table 24.Total K-value (oxides) for each heat when tested to DIN 50602

Diameter or thickness, mm

Total parameter K (oxides) for each heat

Melting process

Electric arc furnace +vacuum degassing

Electric arc furnace without vacuum

degassing ESR

to 8 2 15 2 35 2 10 over 8 to 17 3 15 3 30 3 10 over 17 to 35 3 20 3 40 3 15 over 35 to 70 4 15 4 35 4 10 over 70 to 100 4 15 4 40 4 10 over 100 to 140 4 20 4 45 4 15 over 140 to 200 4 20 4 50 4 15

Note: for metal products over 200 mm in diameter or thickness non-metallic inclusion testing shall be performed on samples re-forged into round or square 90-100 mm in size.

5.5.2 The results of non-metallic inclusion evaluation performed in accordance with ASTM E 45 (Method A) shall conform to the requirements stated in Table 25.

Table 25. Average rating of non-metallic inclusions to ASTM E45

Melting process

Average rating of inclusion content, max

Inclusion series Inclusion type

A B C D

Electric arc furnace with vacuum degassing

thin heavy

2,5 2,0

2,5 2,0

2,5 2,0

2,5 2,0

Electric arc furnace without vacuum

degassing

thin heavy

3,0 2,0

3,0 2,0

3,0 2,0

3,0 2,0

ESR thin

heavy 2,5 1,5

2,0 0,5

0,5 0,5

1,0 0,5

Note: for steel grades with specified inferior sulfur limit, non-metallic inclusions of A-type are not subject to rejection.



5.6 Mechanical properties of heat treatable steel delivered as-annealed or without heat treatment when determined at room temperature on longitudinal heat-treated specimens or specimens made of heat-treated test pieces shall conform to the requirements of Table 26.

Table 26. Mechanical properties of steel tested on heat-treated specimens or heat-treated test pieces.

Grade designation Heat treatment of specimens or test

pieces

Yield strength Re

(R0,2), N/mm2 (min)

Tensile strength

Rm, N/mm2

Elongation 5, %

Reduction of area, Z,

%

Impact energy KV, J

DIN EN 10083-2, 3

GOST min

C22E 20 Water quenching at 860-900C,

tempering at 550-660C

290 470-620 22 50 50 C22R 20-

C35E 35 Water or oil quenching at 840-880C, tempering

at 550-660C

380 600-750 19 45 35 C35R 35-

C40E 40 Water or oil quenching at 830-870C, tempering

at 550-660C

400 630-780 18 40 30 C40R 40-

C45E 45 Water or oil

quenching at 820-860, tempering

at 550-660

430 650-800 16 40 25 C45R 45-



at 550-660

460 700-850 15 35 - C50R 50-



at 550-660

490 750-900 14 35 - C55R 55-



at 550-660

520 800-950 13 30 - C60R 60-

28Mn6 28

Water or oil quenching at 840-880, tempering

at 540-680

490 700-850 15 45 40

38r2 38


at 540-680

450 700-850 15 40 35

46r2 46


at 540-680

550 800-950 14 40 35

34r4 34 Water or oil

quenching at 830-870, tempering at

540-680

590 800-950 14 40 40 34rS4 34-



Table 26 (continued)


pieces

Yield strength Re

(R0,2), N/mm2 (min)

Tensile strength

Rm, N/mm2

Elongation 5, %


%

Impact energy KV, J

EN 10083-1 GOST min



at 540-680

630 850-1000 13 40 35 37rS4 37-



at 540-680

660 900-1100 12 35 35 41rS4 41-

25rMo4 25 Water or oil


at 540-680

600 800-950 14 55 50 25rMoS4 25-

34rMo4 34 Water or oil quenching at 830-890, tempering

at 540-680

650 900-1100 12 50 40

34rMoS4 34-

42rMo4 42 Water or oil quenching at 820-880, tempering

at 540-680

750 1000-1200

11 45 35 42rMoS4 42-

50rMo4 50

Oil quenching at 820-870,

tempering at 540-680

780 1000-1200

10 45 30

34rNiMo6 3422



900 1100-1300

10 45 45

30rNiMo8 3022



1050 1250-1450

9 40 30

35NiCr6 35XH1



740 880-1085 14 40 35

36NiCrMo16 3624

Oil quenching at 865-885, tempering at 550-650

1050 1250-1450

9 40 30

39CrNiMo3 39XHM


735 930- 1130

11 40 35

30NiCrMo16-6 30X1H4M


880 1080 - 1230

10 45 35





pieces

Yield strength Re

(R0,2), N/mm2 (min)

Tensile strength

Rm, N/mm2

Elongation 5, %


%

Impact energy KV, J

EN 10083-1 GOST min

51rV4 50



800 1000-1200

10 45 30

Notes: 1. For metal products over 100 mm in diameter or thickness it is permitted to determine mechanical properties on samples re-forged into round or square 90-100 mm. 2. Heat treatment (see 3rd column of Table 26) shall be performed on specimens or test pieces 15-25 mm in diameter or square side. Cooling process after tempering is in the option of the manufacturer.

5.7 Mechanical properties of heat treatable normalized steel when tested at room temperature on longitudinal specimens in delivery condition shall conform to Table 27.

Table 27. Mechanical properties of normalized steel tested on specimens in delivery condition

Grade designation Diameter or thickness, mm

Yield strength Re (R0,2), N/mm

2 Tensile strength

Rm, N/mm2

Elongation 5, %

EN 10083-1 GOST min

C22E 20 16 >16100 >100250 >250550

240 210 200 190

430 410 400 390

24 25 25 25 C22R 20-

C35E 35 16 >16100 >100250 >250550

300 270 245 235

550 520 500 490

18 19 19 19 C35R 35-

C40E 40 16 >16100 >100250 >250550

320 290 260 250

580 550 530 520

16 17 17 17 C40R 40-

C45E 45 16 >16100 >100250 >250550

340 305 275 265

620 580 560 550

14 16 16 16 C45R 45-

C50E 50 16 >16100 >100250 >250550

355 320 290 280

650 610 590 580

13 14 14 14 C50R 50-

C55E 55 16 >16100 >100250 >250550

370 330 300 290

680 640 620 610

11 12 12 12 C55R 55-

C60E 60 16 >16100 >100250 >250550

380 340 310 300

710 670 650 640

10 11 11 11 C60R 60-

28Mn6 28

16 >16100 >100250 >250550

345 310 290 280

630 600 590 580

17 18 18 18

Notes: 1. For bars 16 mm (and less) in diameter yield strength is not tested; it can be estimated by actual values of tensile strength using the equation R0,2 = 0,55 Rm. 2. On customer request stated in the specification, impact energy KV, J shall be tested additionally on longitudinal specimens and test results shall be reported in the inspection certificate.



On customer require stated in the specification, for C22E, C22R, C35E, C35R, C45E, C45R, C50E, C50R, C60E, C60R steel grades delivered in normalized condition mechanical properties shall conform to Table 27a.

Table 27a. Mechanical properties of normalized steel tested on specimens in delivery in condition.

Grade designation Diameter or thickness,

mm

Yield strength Re

(R0,2), N/mm2

(min)

Tensile strength Rm,

N/mm2

Elongation 5, % Impact energy

DVM, J

L Q L Q

DIN EN 10083-2

GOST min

C22E 20 250 >250500 >500550

225 215 205

410-520 410-520 410-520

26 25 24

19 17 16

48 41 38

34 27 24 C22R 20-

C35E 35 250 >250500 >500550

275 255 245

490-610 490-610 490-610

22 21 20

15 14 12

38 34 31

24 21 17 C35R 35-

C45E 45 250 >250500 >500550

325 305 295

590-720 590-720 590-720

18 16 15

12 11 10

31 27 24

17 14 14 C45R 45-

C50E 50 250 >250500 >500550

345 325 315

620-770 620-770 620-770

16 15 14

11 10 9

- - -

- - - C50R 50-

C60E 60 250 >250500 >500550

375 355 345

680-830 680-830 680-830

14 13 12

10 9 8

- - -

- - - C60R 60-

Notes: 1. L and Q are longitudinal and transversal directions of specimen cutting correspondingly. 2. For bars 16 mm (and less) in diameter yield strength is not tested; it can be estimated by actual

values of tensile strength using the equation R0,2 = 0,55 Rm 3. For bars 160 mm (and under) in diameter elongation and impact energy on the transversal

specimens are not tested. 4. For bars less than 16 mm in diameter impact energy on the longitudinal specimens is not tested.

5.8 Metal products of carburizing steel shall be delivered after hardenability testing by end-quench test (Jominy test). Rockwell hardness limits shall conform to Table 28

Table 28. Rockwell hardness limits (revision 2010 acc. to the amendment 1)

Grade designation Hardness HRC (max/min) at a distance from the bar end, mm

DIN EN 10084

GOST 1,5 3 5 7 9 11 13 15 20 25 30 35 40

17r3 17 47 39

44 35

40 25

33 20

29 -

27 -

25 -

24 -

23 -

21 -

- -

- -

- - 17CrS3 17-

28r4 28 53 45

52 43

51 39

49 29

45 25

42 22

39 20

36 -

33 -

30 -

29 -

28 -

27 - 28CrS4 28-

16MnCr5 16 47 39

46 36

44 31

41 28

39 24

37 21

35 -

33 -

31 -

30 -

29 -

28 -

27 - 16MnCrS5 16-

16MnCrB5 16 47 39

46 36

44 31

41 28

39 24

37 21

35 -

33 -

31 -

30 -

29 -

28 -

27 -

20MnCr5 20 49 41

49 39

48 36

46 33

43 30

42 28

41 26

39 25

37 23

35 21

34 -

33 -

32 - 20MnCrS5 20-




Grade designation Hardness HRC (max/min) at a distance from the bar end, mm DIN EN 10084

GOST 1,5 3 5 7 9 11 13 15 20 25 30 35 40

18rMo4 18 47 39

46 37

45 34

42 30

39 27

37 24

35 22

34 21

31 -

29 -

28 -

27 -

26 - 18CrMoS4 18-

22CrMoS3-5 22- 50 42

49 41

48 37

47 33

45 31

43 28

41 26

40 25

37 23

35 22

34 21

33 20

32 -

20MoCr3 20 49 41

47 38

45 34

40 28

35 22

32 20

31 -

30 -

28 -

26 -

25 -

24 -

23 - 20MoCrS3 20-

20MoCr4 20 49 41

47 37

44 31

41 27

38 24

35 22

33 -

31 -

28 -

26 -

25 -

24 -

24 - 20MoCrS4 20-

16Nir4 16 47 39

46 36

44 33

42 29

40 27

38 25

36 23

34 22

32 20

30 -

29 -

28 -

28 - 16NiCrS4 16-

10NiCr5-4 101 41 32

39 27

37 24

34 22

32 -

30 -

- -

- -

- -

- -

- -

- -

- -

18NiCr5-4 181 49 41

48 39

46 35

44 32

42 29

39 27

37 25

36 24

34 21

32 20

31 -

31 -

30 -

17CrNi6-6 1722 47 39

47 38

46 36

45 35

43 32

42 30

41 28

39 26

37 24

35 22

34 21

34 20

33 20

15NiCr13 173 48 41

48 41

48 41

47 40

45 38

44 36

42 33

41 30

38 24

35 22

34 22

34 21

33 21

20NirMo2-2 20 49 41

48 37

45 31

42 25

36 22

33 20

31 -

30 -

27 -

25 -

24 -

24 -

23 - 20NirMoS2-2 20-

17NirMo6-4 171 48 40

48 40

47 37

46 34

45 30

44 28

42 27

41 26

38 24

36 23

35 22

34 21

33 - 17NirMoS6-4 171-

20NirMoS6-4 202- 49 41

49 40

48 39

48 36

47 33

47 30

46 28

44 26

41 23

39 21

38 -

37 -

36 -

18CrNiMo7-6 1822 48 40

48 40

48 39

48 38

47 37

47 36

46 35

46 34

44 32

43 31

42 30

41 29

41 29

14NiCrMo13-4 143 47 39

47 39

46 37

46 36

46 36

46 36

46 35

45 33

43 31

42 30

40 28

39 27

38 26

20NiCrMo13-4 203 53 43

52 42

52 42

51 41

51 41

51 41

51 41

51 41

51 41

50 40

50 40

50 40

49 39

Quenching temperature for specimens shall be as follows: 8505C for the 28Cr4 (28X), 28CrS4 (28X-), 20NiCrMo13-4 steel grades; 8605C for the 18CrNiMo7-6 (18X22) steel grade; 8705C for the 16MnCr5 (16X), 16MnCrS5 (16-), 16MnCrB5 (16), 20MnCr5(20), 20MnCrS5 (20-), 17CrNi6-6(1722) steel grades; 9005C for the 22CrMoS3-5 (22-) steel grade; 9105C for the 20MoCr4 (20), 20MoCrS4 (20-) steel grades; 9205C for the 20NiCrMo2-2 (20H), 20NiCrMoS2-2 (20H-) steel grades. For other steel grades shown in table 28 quenching temperature shall be 8805C.

5.9 Metal products 20 mm (and over) in diameter or thickness shall be US-tested in accordance with EN 10308 ( for hot-rolled bars) and EN 10228-3 ( for forged bars) with test procedure of 1a) type ( for round bars) and 1b) type ( for square and rectangular bars).



Test results shall meet the requirements of Table 29.

Table 29. US-test requirements

Diameter or thickness, mm

Product type Rolled Forged

Quality class acc. to EN10308 Quality class acc. to EN 10228 Test procedure

1a ( round bars)

1b (square and

rectangular bars)

1a ( round bars)

1b (square and

rectangular bars) from 20 to 80 4 3 over 80 to 180 3 3

over 189 2 3 Note: Other US-test requirements may be agreed in the specification.

5.10. Metal products shall be supplied with the following requirements to decarburizing depths: 5.10.1. For round bars without turning, square bars, billets and rectangular bars with spot grinding of surface defects, round cold-drawn bars and wire of steel grades with carbon content over 0,3% ( lower limit) , the decarburizing depth ( ferrite + transition zone) shall not exceed 1,5% of diameter or thickness per one side. 5.10.2. On turned round bars, square and rectangular bars with complete ground surface, square and rectangular bars with milled or planed surface , round bars with ground and polished surface of steel grades with carbon content over 0,3% ( lower limit) the decarburizing layer is not permitted, which shall be guaranteed by the manufacturing process. 5.10.3. On metal products of steel grades with carbon content 0,3% and less the decarburizing depth is not tested. 5.10.4. On square bars, billets, blooms and rectangular bars over 180 mm in thickness the decarburizing depth is not tested.

5.11. Reduction ratio shall be 4,0 min for all product types that is provided by manufacturers technology.

5.12 Mixing tests shall be provided by spark test method or spectrometer or by other acceptable non- destructive methods.

5.13. Metal products shall be radiation and mercury free as well as shall not show noticeable magnetization that should be provided by manufacturers technology. 6. ACCEPTANCE RULES AND TEST METHODS Acceptance rules and test methods shall be in accordance with GOST 4543 including the following details: - austenitic grain size is to be evaluated according to ASTM E112; - non-metallic inclusions shall be evaluated in accordance with DIN 50602, Method

K or in accordance with ASTM E45, Method A; - US-testing shall be performed in accordance with EN 10308 ( for hot-rolled bars)

and EN 10228-3 ( for forged bars) on 10% of bars , billets, rectangular bars up to



100 mm (incl,) in diameter or thickness and on 100% of bars , blooms, billets and rectangular bars over 100mm in diameter or thickness;

- for products over 140 mm in diameter or thickness it is permitted to check macrostructure and grain size on samples re-forged into round or square 90-100 mm in section size;

- for heat treatable steel delivered in normalized condition mechanical properties shall be determined on samples taken from finished products in delivery condition. For products up to 25 mm in diameter or thickness specimens shall be taken from the central part of the section; for products over 25 to 250 mm in diameter or thickness specimens shall be taken at a distance 12,5 mm under the surface; for products over 250 mm in diameter or thickness specimens shall be taken at a distance 12,5-60,0 mm from the surface;

- for heat treatable steel delivered after annealing or without heat treatment mechanical properties shall be determined on specimens, according to notes of Table 26;

- for bars with ground and polished surface the diameter, out-of-round and surface roughness shall be measured at a distance not less than 25 mm and 50,0mm from the bar end for bars up to 50, 00mm and over 50,00 mm in diameter correspondingly.

7. MARKING AND PACKING 7.1 Hot-rolled and forged bars, billets, blooms, hot-rolled and forged flat bars shall be tightly packed in bundles max 5,0 tons in weight. Each bundle shall be banded 3-4 times in 2-3 places with wire 5-7 mm in diameter or with steel strip 0,8-1,5 mm in thickness and 30-35 mm in width. One end of each bar over 42 mm in diameter or thickness shall be stamped with heat number, steel grade number (see designations in parentheses in the 1st column of Tables 1-3), manufacturers logo, and the sign ( digital code) of a quality control inspector. Bar/billet/bloom ends opposite to the stamped ones shall be painted with specified colour. For bars up to 42 mm (incl.) in diameter or thickness 5-7 pieces of the bundle shall be stamped indicating heat number, steel grade number, manufacturers logo, sign (digital code) of a quality control inspector. Stamped bar ends shall be colour painted. On agreement between sides stated in the specification metal products with turned, planed (milled) surface or with surface after complete grinding shall be coated with mineral oil or lubricant preserving from corrosion.

7.2 Ground and polished bars and cold-drawn bars up to 10,0 mm (incl.) in diameter shall be rigidly tied at 3 places and wrapped in waterproof paper and after that in polymer film. Bundle weight shall not exceed 80 kg. Each bundle shall have 2 tags. Bundles shall be placed in wooden boxes. Box gross weight shall be max 2000 kg. Faces of each box shall be labeled.



Ground and polished bars and cold-drawn bars over 10,0 mm in diameter shall be wrapped in waterproof paper and after that in polymer film. Bundles shall be tightly packed and rigidly tied. Each bundle shall be banded 2-3 times in 2-3 places with wire 5-7 mm in diameter or with steel strip 0,8-1,5 mm in thickness and 30-35 mm in width. For protection during handling wooden pads shall be provided in the strapping points as per manufacturers layout. Each bundle shall contain not less than 5 bars that are stamped with heat number and steel grade number. Bars processed on Landgraf line may be identified with heat number and steel grade number with indelible ink by bubble- jet printing instead of stamping. Ends of stamped bars shall be colour painted. Bundle weight shall not exceed 2500 kg. Prior to packing cold-drawn bars and bars with ground and polished surface shall be oiled to prevent from corrosion.

7.3 Wire coils shall be wrapped in waterproof paper and after that in polymer film and jute. Coils shall be delivered in bundles max 1000 kg in weight. For banding wire 5-7 mm in diameter or steel strip 0,8-1,5 mm in thickness and 30-35 mm in width is used. Prior to packing coils shall be oiled to prevent from corrosion.

7.4 For packing of bars with ground and polished surface, cold- drawn bars and wire coils it is permitted to use Walki Promet packing materials instead of waterproof paper and polymer film to secure metal products from corrosion and damage while transport and storage.

7.5 Each bundle of bars, billets, blooms and flat bars shall have two tags (one on each side) with following indication in English: - contract number; - specification number; - manufacturer; - customer; - steel grade (steel grade name and steel grade number according to DIN EN); - heat number; - section size, mm; - lot number for hot -rolled bars and size tolerance for ground and polished bars; - length, mm; - net/gross weight, kg; - package number and number of packages; Bundles of wire coils and each coil in a bundle shall have tags (one for each item), for coils weight in kgs shall be indicated instead of length in mm. Bundle weight shall be indicated on bundle identification label. 8. SUPPLEMENTARY AND SPECIAL REQUIREMENTS Customers supplementary and special requirements (including separate specification) concerning extension of product range, changes in chemical composition, technical requirements or testing methods are to be stated separately in a technical protocol being an integral part of the contract.



9. INSPECTION CERTIFICATE

Products shall be accompanied with Inspection certificate according to EN 10204, 3.1 in English including the following: - chemical composition and melting process; - steel grade (steel grade name and steel grade number according to DIN EN); - heat number; - section size, mm; - lot number for hot -rolled bars and size tolerance for ground and polished bars; - length, mm (except for coils); - net weight, kg; - specification number and contract number; - test results: grain size, hardenability, macrostructure, mechanical properties, non-

metallic inclusions, hardness, decarburizing depth, US-testing, mixing test. The following also shall be stated in the Certificate: - Made in Ukraine - Radiation Free - Mercury Free - No Weld or Weld Repair - in the line Chemical Composition - DIN EN 10084 or DIN EN 10083-2

DIN EN 10083-3 in accordance with the specifications and the requirements of Tables1-3.

Note: the Certificate shall contain the following statement as well: After dimension/surface defect test.



10. Reference Documents

DIN EN 10084 Case hardening steels - Technical delivery conditions.

DIN EN 10083-1 Steels for quenching and tempering - Part 1: General technical delivery conditions.

DIN EN 10083-2 Steels for quenching and tempering. Part 2: Technical delivery conditions for non alloy steels.

DIN EN 10083-3 Steels for quenching and tempering. Part 3: Technical delivery conditions for alloy steels.

DIN 50602 Metallographic test methods; microscopic examination of special steels using standard diagrams to assess the content of non-metallic inclusions.

ASTM E45 Standard test methods for determining the inclusion content of steel.

ASTM E 112 Standard test methods for determining average grain size. EN 10204 Metallic products - Types of inspection documents EN 10308 Non-destructive testing - Ultrasonic testing of steel bars

EN 10228-3 Non-destructive testing of steel forgings - Part 3: Ultrasonic testing of ferritic or martensitic steel forgings.

GOST 4543 Hot-rolled bars of alloy structural steel