SINCRON - usiminas.com · Sincron steel line by the CLC process. 5 PLATE FINISHING Slab surface and internal quality are ... Controlled rolling process in which the slab is rolled

SINCRON

INDEX9 In timing with the Market

11 CLC Integrated Process Technology

17 CLC Accelerated Cooling Equipment

11 CLC PRODUCTION TECHNOLOGY OF SINCRON PLATES

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49 Sincron WHS 1000T

19 Sincron Series Product Line

23 Sincron Shipbuilding & Offshore

29Extension of Sincron Series for Oil and Gas Pipelines: API 5L

33Extension of Sincron Series for Offshore Platforms: API 2W

35 Sincron Structural

37 Sincron BHS 450M

39 Sincron BHS 900T

41 Sincron WHS 500M

43 Sincron WHS 600T

45 Sincron WHS 700T

47 Sincron WHS 800T

51

55

Extension of Sincron Series Structural: EN 10025; EN 10028; ASTM

Finishing and Supply Conditions

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..

.....

AutomotiveDistribution

Electronics

Packing

White goods

Tub

es

Furn

iture

. ..

..

..

.

Aut

omot

ive

Civi

l Con

stru

ctio

nDis

trib

ution

Road and Agricultu

ral

Equipment

Naval

Containers

Tubes

Railway

. . . .

Wh

ite goo

ds

Civil Con

structio

n

Distrib

utio

n

Au

tom

otive

..

.. .

Autom

otive

Civil Construction

DistributionWhite goods

Tubes

Capital goods

Civil Construction

Distribution

Metal Structures

and components

Agricultural machinery

Naval and O

ffshore

Highw

ays

Larg

e

Diam

eter

Pip

es

..

..

..

..

.

Power

12%

4%

31%

27%

26%

HOT D

IP

ELECTROGAL-

GALV

ANIZING

VANIZED

HOT ROLLING

HEA

VY PLATES

COLD ROLLING

COMPLETE STEEL SOLUTIONS

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Usiminas is a leading producer of flat steel in the Americas. There are units in six states of the country working on an integrated basis to deliver differentiated products and services.

A broad portfolio – of plates to coated steel - adds value to various strategic sectors of the economy, such as automotive, marine, oil and gas, civil construction, machinery and equipment, home appliances, distribution, among others.

They are innovative steels, developed in line with market trends, from Usiminas’ historical vocation to technological research.

In segment of Heavy Plates, Usiminas has production lines with the use of controlled rolling and thermal treatment, and controlled rolling and accelerated cooling. These combinations produce quality steel at different levels of mechanical strength.

As the base of everything, a team trained to make steel more than a product, a solution.

WHEN STEEL COMES FROM USIMINAS, QUALITY COMES FIRST

IT OFFERS CONTROL – exactly knowing how steel behaves to use it with precision:

• Steels fabricated under strict control with special equipment;

• Better homogeneity of chemical composition and mechanical properties of the steel;

• Greater materials control and results by the customer.

PROVIDES PRODUCTIVITY – less time and greater value to users:

• Steel with better cleaness and high strength;

• Optimization of welding processes

• Cost savings to the customer.

FOCUSES ON CARE – respect for material, equipment and, above all, for people:

• Better flatness and finishing of the plates;

• Possibility of eliminating preheating in welding processes in general;

• Facility of use;

• Lower environmental impact and greater energy efficiency.

IN SYNC WITH THE MARKETSINCRON

Focused on adding high technological content to its products, Usiminas developed the Sincron heavy plates to provide more productivity, quality, time and competitive costs to the market.

These are premium quality steels, able to show, simultaneously, high mechanical strength and tenacity, with superior welding performance.

Sincron steels are produced by CLC technology – Continuous Online Control – one of the most modern in the world, exclusively transferred by Nippon Steel Sumitomo Metal Corporation for Usiminas. The process used is TMCP (Thermomechanical Control Process), a heavy plate process method already used by high technology steel companies in the global context.

Conciliate, control, and integrate. With Sincron steels, the heavy plates customer can have differentiated and competitive solutions, developed with high technical precision to strengthen industrial development in Brazil.

WHY USE SINCRON?

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CLC TECHNOLOGY CONCEPT

CLC production technology for heavy plates is an integrated process of secondary steel refining, a special controlled rolling technique, and innovative accelerated cooling technology. The combined process of controlled rolling and accelerated cooling is globally known as TMCP (Thermomechanical Control Process), whose know-how was perfected by Nippon Steel Sumitomo Metal Corporation. The technology was patented as CLC (Continuous Online Control) and has been used in the production of high-strength heavy plates (higher than 50 kgf/mm²) and/or when special requirements as Charpy test, DWTT (Drop Weight Tear Test) and Sour Service are required by the customers. Sincron steels may be applied mainly in shipbuilding, offshore industry, and in civil construction.

THE CLC PROCESS PROVIDES:

• grain refinement and microstructure control;

• reduction of the carbon equivalent (CE).

WITH THIS, SINCRON SERIES PRODUCTS OFFER:

• high toughness;

• better weldability through low CE;

• higher tensile strength associated to lower CE;

• greater efficiency in the field (customer productivity).

CLC INTEGRATED PROCESS TECHNOLOGY

The CLC integrated process technology in production of Sincron steels can be divided into two stages: the first refers to molten steel fabrication in the steel shop, through primary and secondary steel refining; and the second stage, controlled rolling and accelerated cooling of the heavy plate.

CLC TECHNOLOGY FOR THE PRODUCTION OF SINCRON PLATES

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REFINO SECUNDÁRIO

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2 LADLE FURNACEThe liquid steel is treated in the ladle furnace, where the temperature is stabilized and additions are made to adjust the chemical composition and desulfurize the steel.

SECONDARY REFINING (DOUBLE REFINING)CLC steels receive differentiated “double refining” treatment. This means that they pass through the ladle furnace and (RH) vacuum degassing, which provides strict control of chemical composition. With this, Sincron steels have lower comparative sulfur, nitrogen and hydrogen content compared to other steels.

1 LD CONVERTERScrap and pig iron are charged in the LD converter; next, oxygen is injected using a lance to oxidize impurities, parallel to alloy additions to obtain the desired chemical composition.

3 (RH) VACUUM DEGASSING The ladle with molten steel is placed at the RH equipment in a vacuum atmosphere, where hydrogen is removed from the steel.

4 CONTINUOUS CASTINGThe treated steel is poured into a distributor, which feeds the casting tundish with special controls for the purpose of minimizing the occurrence of centerline segregation during solidification.

1st STAGE: LIQUID STEEL FABRICATION AND SLAB CASTINGLearn about the flow of molten steel fabrication and slab casting in the Sincron steel line by the CLC process.

5 PLATE FINISHINGSlab surface and internal quality areinspected and surface flaws are eliminated by the scarfing process. Next, the slabs are sent to the heavy plate rolling line.

1 REHEATING FURNACEThe slabs are initially fed into the reheating furnaces to reach adequate rolling temperature and to dissolve precipitates formed in the steel shop. In these furnaces, control and temperature uniformity in all directions of the slab are fundamental to guarantee the shape and mechanical properties required in the final product.

2 ROUGHING AND FINISHING MILLControlled rolling process in which the slab is rolled in the roughing phase above the temperature of non-recrystallization of the austenitic element (Tnr) and, later on, rolled below this temperature to the final thickness required by the customer, promoting significant grain refinement.

3. HOT LEVELERBefore the rolled plate is sent for accelerated cooling, the material passes through a hot leveler to improve shape, so that the cooling may be as uniform as possible in all directions of the plate.

2nd STAGE: CONTROLLED ROLLING + ACCELERATED COOLINGLearn about the heavy plate rolling process flow of the Sincron series.

4 ACCELERATED COOLINGStage in which the plate is rapidly cooled with water, with the purpose of controlling steel microstructure and, thus, reaching the required mechanical properties required in the final product specification.

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5. COLD LEVELLER AND PRESSComplementary off-line equipment used to correct shape, allowing meeting rigorous flatness requirements.

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THE CLC ACCELERATED COOLING EQUIPMENTThe CLC accelerated cooling equipment in the heavy plate line at the Usiminas - Ipatinga Plant makes it possible to develop the Sincron series line, a special superior quality heavy plate line. This material has special pre-control shape characteristics, with the use of a hot leveler, and control of the water cooling rates according to the properties to be required by the final product.

The CLC accelerated cooling equipment allows the refinement of grains and obtainment of different steel microstructures, due to its chemical composition and the rates of cooling used (accelerated cooling or direct quenching), beginning and final cooling temperatures. See Graph 1.

abso

rbed

en

erg

y vE

– 2

0(J

)

0

0

100

200

200100

300

300

heat input in welding (kJ/cm)note: steel grade – TMCP DH 36

heat input rangeconventional steels

34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26

0,28 Chapa normalizada

Chapa TMCP

Thickness (mm) Pre-heating temperature to avoid cracks on the welding filament - TMCP

Note: Grade: EH36

2. PCM(%) = C + Si + Mn + Cu + Ni + Cr + Mo + V + 5B30 20 60 20 15 10

Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time

Initial Cooling Temperature

Cooling rate

Final cooling temperature

Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

Conventional

abso

rbed

en

erg

y vE

– 2

0(J

)

0

0

100

200

200100

300

300



34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26


Chapa TMCP


Note: Grade: EH36


Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time


Cooling rate


Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

Conventional

abso

rbed

en

erg

y vE

– 2

0(J

)

0

0

100

200

200100

300

300



34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26


Chapa TMCP


Note: Grade: EH36


Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time


Cooling rate


Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

ConventionalGraph 1 – Cooling curves in the CLC process in Usiminas’ accelerated cooling equipment.

SINCRON SERIES PRODUCT LINESincron series products are widely applied in situations in which high mechanical strength steels are required, high welding productivity and toughness at low temperatures, such as those in the Oil & Gas, Energy industries, as well in other segments that require better performance in structural components manufacture, such as that of the industrial and highway machinery and equipment manufacturers.

MAIN ADVANTAGES:

• excellent flatness and uniformity of mechanical properties;

• high toughness associated with elevated tensile strength;

• possibility of structural weight reduction, with large-scale application of high-strength steel;

• possibility of eliminating preheating, even for high-strength steels;

• excellent impact energy absorbed properties, even with high heat input welding;

• reduction of number of welding passes;

• possibility of use of top welding, and elimination of double chamfer process;

• better tolerance guarantees in manufacture and assembly of metallic structures.

Due to the above items, there is high productivity with reduction in welding times and labor.

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Ceq = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

Table 1 – Comparison of mechanical strength properties and weldability of Sincron steel versus conventional steel

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MAIN CHARACTERISTICS OF SINCRON STEEL• Sincron steels, characterized by high tensile strength, high toughness and by superior welding performance due to lower carbon equivalent (CE) are exclusively obtained through the CLC process.

• The CLC process allow to obtain a refined microstructure, with positive impact on the steel’s mechanical properties (strength and toughness), as per Figure 3.

Figure 3 – steel microstructure 50 kgf/mm2; thickness: 25 mm of conventional process versus CLC (x200). Source: Usiminas

CONVENTIONAL ROLLING

50pm

50pm

CLC

• When a product with high tensile strength is required, the best solution is Sincron steel, because, due to its lower CE, weldability is facilitated and with better performance compared to conventional steel. See Chart 1.

As shown in Graph 2, for a determined level of mechanical strength, the carbon equivalent (CE) can be reduced by 0.05% to 0.15% by using the CLC process, compared to the conventional process. Besides this, for a determined specification of CE, an increase in tensile strength of around 100 MPa - 150 MPa is obtained with the choice of the CLC process as the rolling route.

Properties Conventional steel Sincron steel

Carbon equivalent

Strength limit

Weldability

abso

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en

erg

y vE

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0(J

)

0

0

100

200

200100

300

300



34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26


Chapa TMCP


Note: Grade: EH36


Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time


Cooling rate


Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

Conventional

BENEFITS OF USING CLC PROCESS, EXCLUSIVITY OF SINCRON STEEL:

Graph 2 – Relation between the tensile strength (MPa) versus carbon equivalent (CE) by rolling process.

SINCRON SHIPBUILDING AND OFFSHORESincron steel was developed to offer higher performance in shipbuilding and offshore construction in maritime platforms and other constructions that require the use of high strength steels.

There are several advantages in the use of this product line:

• operational advantages;

• safety;

• productivity gains for builders and users;

• flexibility in material selection and specification for the development of engineering pipeline projects, vessels, offshore platforms and metal structures.

Approved up to 50.80 mm and under approval process up to 80.00 mm.

Under industrial development

Specifications

Yield Point (YP)

Charpy Impact test

0° C

-20 °C

-40° C-60°C

32 kgf/mm2 FH32

36 kgf/mm2 FH36

40 kgf/mm2 FH40

43 kgf/mm2 -

47 kgf/mm2

AH32

AH36

AH40

AH43

AH47

DH32

DH36

DH40

DH43

DH47 -

EH32

EH36

EH40

EH47

EH43

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WELDING PERFORMANCE OF SINCRON SHIPBUILDING STEEL

ABSORBED ENERGY IN HAZ (Heat Affected Zone)

• Sincron shipbuilding steel have high energy absorption (vE -20°C in the HAZ), even with large welding heat input), as per Graph 3.

• Conventional shipbuilding steel (heat treatment: Normalization) are limited to welding heat input of 50 KJ/cm.

CLASSIFIER ENTITIESSincron series naval steels are certified by the main shipbuilding certifiers:

Bureau Veritas – France

Germanischer Lloyd – Germany

Korean Register of Shipping – Korea

Lloyd’s Register of Shipping – England

Det Norske Veritas – Norway

Nippon Kaiji Kyokai – Japan

American Bureau of Shipping – USA

BV

GL

KR

LR

DNV

NK

ABS

CODING OF SINCRON SERIES STEEL FOR SHIPBUILDING AND OFFSHORE APPLICATIONThe nomenclature and specification of Sincron steel for shipbuilding application, according to the classifying entity. Example:

SINCRON – NV – 12 – E36 – Z35 – TM

(A) (B) (C) (D) (E) (F)

(A) – Brand name Usiminas for TMCP steel(B) – Classifying entity(C) – Standard edition (year)(D) – Steel grade (Charpy/Yield point in kgf./mm2)(E) – Z Test (35%)(F) – TM: Thermomechanical Control Process

ELIMINATION OF PREHEATING

• Sincron steel allows welding operation with reduction or elimination of preheating temperature with high performance, as in Graph 4. This benefit is quite important in the fabrication of platforms and ships.

Performance of TMCP steel (weldability)Relation between thickness, Pcm value, and TMCP parameters. TMCP plate and Normalized plate.

abso

rbed

en

erg

y vE

– 2

0(J

)

0

0

100

200

200100

300

300



34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26


Chapa TMCP


Note: Grade: EH36


Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time


Cooling rate


Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

Conventional

abso

rbed

en

erg

y vE

– 2

0(J

)

0

0

100

200

200100

300

300



34J>–

Pcm

(%)

20 30 40 50 0 50 100 150

0,14

0,16

0,18

0,20

0,22

0,24

0,26


Chapa TMCP


Note: Grade: EH36


Tem

per

atu

re

Time

AUSTENITE

FERRITE

BAINITE

MARTENSITE

PERLITE

Air-cooling

Direct quenching

Transfer time


Cooling rate


Accelerated cooling

TIRCR

CR

tTRtTR

TFR

TFR

TIR

20

LR M

Pa

CE (%)

0,20 0,30 0,40 0,50

700

800

600

500

400

CLC

Controlled rolling

Conventional

Graph 3 – Relation of absorbed energy in the HAZ and heat input. Source: Nippon Steel Sumitomo Metal Corporation/Usiminas

Nota: 1. Grau: EH36.

2. PCM(%)=C+ Si + Mn + Cu + Ni + Cr + Mo + V + 5B 30 20 20 60 20 15 10

Graph 4 – Relation between Pcm and preheating temperature in welding. Source: Nippon Steel Sumitomo Metal Corporation

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HARDNESS (Taper Hardness Test)

• Products of the Sincron line provide a steel with a lower level of hardness than conventional steel in the hardness test with high levels of cooling. Graph 5 illustrates an example of the test with CLC steel from NSSMC for shipbuilding application.

Rod: D5016 4

Steel EH36

Conventional steel

Steel CLC

Welding arc opening

Plate baseShort string

Welding arc opening cooling time and 800ºC to 500ºC (seg) Welding arc opening

Vic

kers

har

dn

ess

(10

kgf)

Short bead

Heat input17700 (J/cm)

500

400

300

200

100

00.5 2 3 4 5 6 7 8 10 13 17 20 251.5

9500 (J/cm)

30

18 16 14 12

22 20 28 16 14 12 10

10Thickness (∞)[mm]

Thickness (∞)[mm]

Welding conditions

Test sample shape (mm)

Welding conditionsRod: D5016 4mmHeat input:17kJ/cm

Crack test: after 48 hours at assay temperature

Pre-

hea

tin

g te

mp

erat

ure

fo

r p

reve

nti

on

of

even

ts

Magnetic detection of cracksMethod 5 -

AH32 25508025

EH32

DH36

Steel grade Thickness(mm) Legend

Relation between cold cracking properties and plate thickness

200

100

00 20

Thickness (mm)40 60 80

Conventional steel

Aço

Conventional SteelEH 36 t = 35

A

A60 80 60

250

200

Section A-A60°

E/2

E/2 E

2

Graph 5 – Relation of hardness between conventional steel and CLC technology – (Taper Test). Source: Nippon Steel and Sumitomo Metal Corporation

SUSCEPTIBILITY TO COLD CRACKING

• Sincron steel products show low susceptibility to cold cracking, allowing welding with significant reduction of preheating temperature or even its elimination, as can be seen in Graph 6.

Rod: D5016 4

Steel EH36

Conventional steel

Steel CLC

Welding arc opening

Plate baseShort string

Welding arc opening cooling time and 800ºC to 500ºC (seg) Welding arc opening

Vic

kers

har

dn

ess

(10

kgf)

Short bead

Heat input17700 (J/cm)

500

400

300

200

100

00.5 2 3 4 5 6 7 8 10 13 17 20 251.5

9500 (J/cm)

30

18 16 14 12

22 20 28 16 14 12 10

10Thickness (∞)[mm]

Thickness (∞)[mm]

Welding conditions

Test sample shape (mm)

Welding conditionsRod: D5016 4mmHeat input:17kJ/cm

Crack test: after 48 hours at assay temperature

Pre-

hea

tin

g te

mp

erat

ure

fo

r p

reve

nti

on

of

even

ts

Magnetic detection of cracksMethod 5 -

AH32 25508025

EH32

DH36

Steel grade Thickness(mm) Legend

Relation between cold cracking properties and plate thickness

200

100

00 20

Thickness (mm)40 60 80

Conventional steel

Aço

Conventional SteelEH 36 t = 35

A

A60 80 60

250

200

Section A-A60°

E/2

E/2 E

2

Graph 6 – Relation between cold cracking properties and plate thickness. Source: Nippon Steel and Sumitomo Metal Corporation

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EXTENSION OF SINCRON SERIES FOR OIL AND GAS PIPELINES:API 5L AND DNV OS F101The TMCP process shows a differentiated portfolio of steel in the API standard for application in oil and gas pipelines, which require low carbon equivalent, high collapse resistance, sour service requirement and low temperature toughness.

The nomenclature for the specification grade of Sincron series extension for oil and gas pipelines application is used by the API and DNV standards for the TMCP process. Please inquiry Usiminas for other requirements: DWTT, HIC, SSC and CTOD.

Thickness range (mm)Specification* (Steel grade)

API 5L*

X60 M 12.00 - 38.10

X60 MOS 12.00 - 32.50

X65 M 12.00 - 38,10

X65 MOS 12.00 - 32.50

X70 M 12.00 - 31.75

X80 M 12.00 - 31.50

450 SFDU 12.00 - 32.45DNV OS F101 LSAW

485 SFDU (3) 12.00 - 32.45

(1) Chemical composition: informed in the certificate(2) Requirements and Dimensions on inquiry(3) Under Development

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EXTENSION OF SINCRON SERIES FOR OFFSHORE PLATFORMS: API 2W

Specification Thickness (mm)

Typical Chemical Composition (% in bulk) Mechanical Properties

C MnSi P S Other Ceq YS (MPa) TS (MPa)

Elongation Charpy Test

MB (mm) Temp (°C) Energy (J)%

API 2W-50

12.00 - 25.00

≤ 0,16 0.05 ~ 0.50 1.15 ~ 1.60 ≤ 0.030 ≤ 0.010 (1)≤ 0.39

345 ~ 517

≥ 448 50 ≥ 23 (2)345 ~ 483

25.01 - 40.00

40.01 - 50.80 ≤ 0.41

SPWHT TEST FOR STANDARD API 2W 50 - TMCP

API 2W-50 steel produced by the TMCP process - CLC technology from Usiminas is recommended as a base metal in applications that use post-weld heat treatment (PWHT) with the purpose of reducing residual stress due to welding and cool conformation. Graphs (7 to 10) illustrate the behavior of mechanical properties of API 2W-50 steel (thickness 50 mm) produced with CLC technology after simulated PWHT heat treatment according to AWS D1.1/D1.1M:2010.

API 2W steels have extensive application in the manufacture of jackets, TLWPs and topsides in general, for their special characteristics of low carbon equivalent, refined microstructure, high toughness at low temperatures, excellent direction of thickness resistance – “Z” test, and higher weldability compared to equivalent steel of the API 2H or 2Y standard. This class of steel is produced by the TMCP (Thermomechanical Control Process) through controlled rolling or controlled rolling + accelerated cooling, supplementing Sincron shipbuilding product line.

(1) Other elements: as per the API 2W standard and stated in the certificate.(2) Supplied with Charpy impact guarantee to half the thickness, according to the API 2W standard.(3) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (4) Supplementary requirements upon request.(5) Under industrial development, thickness up to 80.00 mm.

API2W50 -50mm - LE TRANSVERSE API2W50 -50mm - LR TRANSVERSE

TEMPERATURE (°C)TEMPERATURE (°C)

TS (M

Pa)

YS (M

Pa)

25 540 560 580 600 65025 540 560 580 600 650

483

448

345

YS TOP YS BOTTOM YS MAX YS MIN TS TOP TS BOTTOM TS MIN

API2W50 -50mm - ELONGATION API2W50 -50mm - CHARPY TRANSVERSE (-40°C; 1/2 T)

TEMPERATURE (°C)TEMPERATURE (°C)

CH

AR

PY (J

)

EL (%

)

25 540 560 580 600 65025 540 560 580 600 650

18

41

CHARPY TOP CHARPY BOTTOM CHARPY MINEL TOP EL BOTTOM EL MIN

Gráfico 7 – Variação do limite de escoamento (MPa) com o aumento de temperatura (°C) após tratamento térmico SPWHT.Fonte: Usiminas

Gráfico 8 – Variação do limite de resistência (MPa) com o aumento de temperatura (°C) após tratamento térmico SPWHT.Fonte: Usiminas

Gráfico 9 – Variação do Alongamento (%) com o aumento de temperatura (°C) após tratamento térmico SPWHT.Fonte: Usiminas

Gráfico 10 – Variação da energia de absorção ao impacto (J) com o aumento de temperatura (°C) após tratamento térmico SPWHT. Fonte: Usiminas SI

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33

570

510

600

540

480

450

420

390

360

330

300

600

570

540

510

480

450

420

390

360

330

300

500

450

400

350

300

250

200

150

100

50

0

35

30

25

20

15

10

5

0

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SINCRON STRUCTURAL Structural Sincron series products were developed for those applications in which the use of high strength steel is required (above 50 kgf./mm2 tensile strength), the need for absorbed energy guarantee to impact (Charpy test) and, at the same time, welding ease and productivity.

Sincron Structural series steel is subdivided according to its final application:

BHS LINE: Building High Strength, intended for metallic construction of bridges, overpasses and buildings.

WHS LINE: Weldable High Strength, intended for the manufacture of machines, large equipment, such as turbines, generators, spiral casing, and pressure tunnel for power plants, wind towers, cranes, offshore structures, among others that require toughness and good weldability.

(1) Other elements: Al: ≤ 0.015%; Cu: ≤ 0.40%; Cr: ≤ 0.30%; Ti: ≤ 0.050%; Nb: ≤ 0.050%; Ni: ≤ 0.80%; Mo: ≤ 0.20%; V ≤ 0.120%.(2) CeqIIW: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (3) Longitudinal direction.

SINCRON BHS BUILDING HIGH STRENGTHSINCRON BHS 450MSpecially develop for civil construction, Sincron BHS 450M shows the best solution for reduction of buildings, sheds, bridges and overpasses structural weight, since it simultaneously associates high mechanical strength with low carbon equivalent, requirements that are essential for high productivity and structural guarantees.

BHS: Building High Strength steelsM: controlled rolling + Accelerated Cooling (Thermomechanical Control Process)450: Yield Point (YP) in MPa

MAIN BENEFITS COMPARED TO CONVENTIONAL PRODUCTS

Sincron steel BHS 450M differentiates from the other steels of class 450 MPa of YP usually used in civil construction sector as they have lower content of C and low carbon equivalent, addition of Nb, and better limpidity (P and S are lower). Also the best alternative when the substitution of steels of lower mechanical strength classes is required, such as, ASTM A572 50, USI CIVIL 300/350, among other conventional rolling steels.

MAIN TECHNICAL CHARACTERISTICS OF SINCRON BHS 450 M

SpecificationThickness

(mm)


C Si Mn P S Other Ceq (2) YS (MPa) TS (MPa)Elongation

Bending (3)

MB (mm) %

SINCRON BHS 450M ≤ 0.16 ≤ 0.60 ≤ 1.70 ≤ 0.030 ≤ 0.020 (1) ≤ 0.43≥ 450

540 ~ 720 5.65√S0 Ø1.5E; 180°12.00 - 40.00

40.01 - 60.00≥ 17

≥ 430

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SINCRON BHS 900T (UNDER DEVELOPMENT)This is a steel of very high mechanical strength intended for civil construction, such as, buildings, bridges and overpasses structural components, where great effort is required from the structural set.

BHS: Building High Strength steelsT: Direct quenching followed by Tempering900: Yield Point (YP) in MPa

MAIN TECHNICAL CHARACTERISTICS SINCRON BHS 900T

(1) Other elements: Upon request (2) CeqIIW: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (3) Additional requirement for Charpy impact, longitudinal direction at 1/4 of thickness, upon request.

(4) Longitudinal bending: Ø2E; 180°. (5) Surface quality: commercial. (6) Under industrial development thickness range from 12.00 ~ 50.00 mm.


(mm)


C Si Mn P S Other Ceq (2) YS (MPa) TS (MPa)Elongation

MB (mm) %

SINCRON BHS 900T ≤ 0.18 ≤ 0.35 ≤ 1.20 ≤ 0.030 ≤ 0.020 (1) ≤ 0.65 940 ~ 1100 Lo = 5,65 √So12.00 - 50.00 (6) ≥ 11≥ 900

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SINCRON WHS 500M

This is a high strength steel of the 50 kgf./mm2 tensile strength, especially developed with a low carbon equivalent quality design and use of controlled rolling followed by accelerated cooling, highlighting its highly elevated capacity of energy absorption on impact. The low carbon equivalent confers advantages of welding in the fields with minimization of problems of hydrogen induced cracking.

WHS: Weldable High Strength steels

M: Controlled Rolling + Accelerated Cooling (Thermomechanical Control Process)500: Typical tensile strength in MPa

MAIN ADVANTAGES COMPARED TO CONVENTIONAL PRODUCTS

SINCRON WHS 500M steel, because of its low carbon equivalent (CE), due to its low C content, addition of Nb, better limpidity (lower P and S), offers advantages of toughness and weldability compared to high strength steels fabricated by conventional supply conditions of heavy plate rolling, such as USI SAR 50 (A/B/N), ASTM A572 50 N, EN 10025-3 S355N, EN 10025-2 S355J0/JR/J2, among others of the 50 kgf./mm2 tensile strength steels class.

MAIN TECHNICAL CHARACTERISTICS OF SINCRON WHS 500M

(1) Other elements: stated in the certificate.(2) Transverse direction.(3) Supplied with Charpy impact guarantee, longitudinal direction at 1/4 of thickness.

(4) Longitudinal bending: 12.0 - 32.00 mm: Ø1,5E; 180° 32.01 - 65.00 mm: Ø2, 0E; 180º(5) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (6) Other requirements upon request: Z35, SPWHT.


(mm)


C Si Mn P S Other Ceq YS (MPa) TS (MPa)Elongation (2) Charpy Test (3)


SINCRON WHS 500M ≤ 0.18 ≤ 0.55 ≤ 1.60 ≤ 0.025 ≤ 0.010 (1) 470 a 630 L0 = 5.65 √So -10 ≥ 60

12.00 - 16.0016.01 - 40.0040.01 - 65.0065.01 - 80.00

≥ 21≤ 0.41

≤ 0.43

≥ 355

≥ 350

≥ 345

SINCRON WHS WIELDABLE HIGH STRENGTH

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SINCRON WHS 600T steel, because it presents a slightly lower carbon equivalent (Pcm) than USI SAR 60T, due to its lower C, brings advantages in terms of toughness by addition of Nb, besides better cleaness (lower P and S).

SINCRON WHS 600T

This is a high strength steel of the 60 kgf./mm2 tensile strength, especially developed with a low carbon equivalent alloy project, use of controlled rolling + direct quenching, followed by tempering.

WHS: Weldable High Strength steels T: Direct quenching followed by Tempering600: Typical tensile strength in MPa

MAIN CHARACTERISTICS OF SINCRON WHS 600T

(1) Other elements: Al: ≤ 0.05%; Cu: ≤ 0.05%; Cr: ≤ 0.30%; Ti: ≤ 0.025%; Nb: ≤ 0.08%; Ni: ≤ 0.05%; Mo: ≤0.30%; V: ≤ 0.10%; Ca: ≤ 0.0045%.(2) Supplied with Charpy impact guarantee, longitudinal direction at 1/4 of thickness.

(3) Longitudinal bending: 12.00 - 32.00 mm: Ø1,5E; 180°; 32.01 - 50.80 mm: Ø2, 0E; 180º(4) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (5) Other requirements upon request.


(mm)


C Si Mn P S Other Ceq YS (MPa) TS (MPa)Elongation Charpy Test (2)


SINCRON WHS 600T

12.00 - 16.00

≤ 0.16 ≤ 0.55 ≤ 1.70 ≤ 0.025 ≤ 0.010 (1) ≤ 0.41 ≥ 460 600 ~ 700 50

≥ 20

-10 ≥ 45 J16.01 - 38.10 ≥ 28

38.11 - 50.80 ≥ 20

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SINCRON WHS 700TThese are steels of high strength of 70 kgf./mm2 tensile strength, especially developed with a low carbon equivalent alloy project, use of controlled rolling + direct quenching, followed by tempering.

WHS: Weldable High Strength steels T: Direct quenching + tempering700: Typical strenght in MPa


Sincron WHS 700T steel has a differentiated project for mechanical high resistance steels for application where weight reduction of equipment and excellent toughness at low temperatures are required. Another important characteristic of this product is its good performance in welding due to lower C content and carbon equivalent compared to most quenched and tempered steels of the class of 70 kgf/mm2 of tensile strength.

MAIN TECHNICAL CHARACTERISTICS OF WHS 700T

(1) Other elements: Al: ≤ 0.06%; Cu: ≤ 0.05%; Cr: ≤ 0.70%; Ti: ≤ 0.06%; Nb: ≤ 0.009%; Ni: ≤ 0.05%; Mo: ≤ 0.08%; V: ≤0.010%; B: ≤ 0.0050%.(2) Supplied with Charpy impact guarantee, longitudinal direction at 1/4 of thickness.(3) CeqIIW: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (4) Surface quality: commercial.(5) Other requirements upon request.


(mm)


C Si Mn P S Other Ceq (3) YS (MPa) TS (MPa)Elongation Charpy Test (2)


SINCRON WHS 700T 12.00 - 50.80 ≤ 0.18 ≤ 0.45 ≤ 1.50 ≤ 0.025 ≤ 0.010 (1) ≤ 0.49 ≥ 620 690 ~ 895 50 ≥ 16 -20 ≥ 45 J

(1) Other elements: Al: ≤ 0.01%; Cu: ≤ 0.35; Cr: ≤ 0.40; Ti: ≤ 0.05; Nb: ≤ 0.06; Ni: ≤ 0.20; Mo: ≤ 0.080; V: ≤ 0.010; B: ≤ 0.0050.(2) Supplied with Charpy impact guarantee, longitudinal direction at 1/4 of thickness, average values.(3) Transverse bending: 8.00 - 40.00 mm: Ø0E; 180°.(4) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (5) Other requirements upon request.

SINCRON WHS 800TThese are steels of high strength steel of 80 kgf./mm2 tensile strength, especially developed with a low carbon equivalent alloy project, use of controlled rolling + direct quenching, followed by tempering.




SINCRON WHS 800T steel has a differentiated project for mechanical high resistance steels where weight reduction of equipment and excellent toughness at low temperatures are required. Another important characteristic of this product is its good performance in welding due to lower C content and carbon equivalent compared to most quenched and tempered steels of the class of 80 kgf/mm2 of tensile strength.


(mm)


C Si Mn P S Other Ceq YS (MPa) TS (MPa)Elongation Charpy Test (2)


SINCRON WHS 800T8.00 - 25.40 ≤ 0.19

≤ 0.025 ≤ 0.010 (1) ≥ 690 770 ~ 930 50 -40 -4025,41 - 40,00 mm ≤ 0.23

≤ 0.30

≤ 0.50

≤ 1.40

≤ 1.50

≤ 0.41

≤ 0.54≥ 18

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Sincron WHS 1000T steel is one of very high mechanical strength from which significant weight reduction of equipment and excellent toughness at low temperatures are required.

SINCRON WHS 1000TThese are steels of high strength steel of 100 kgf./mm2 tensile strength, especially developed with a low carbon equivalent alloy project, use of controlled rolling + direct quenching, followed by tempering.



(1) Other elements: Upon request (2) CeqIIW: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. (3) Supplied with Charpy impact guarantee, longitudinal direction at 1/4 of thickness. (4) Longitudinal bending: Ø2E; 180°. (4) Surface quality: commercial. (5) Other requirements upon request. (6) Under industrial development thickness range from 19.01 ~ 50.00 mm.


(mm)


C Si Mn P S Other Ceq (2) YS (MPa) TS (MPa)Elongation Charpy Test (3)


SINCRON WHS 1000T 8.00 - 19.00 ≤ 0.18 ≤ 0.025 (1) ≥ 900 940 ~ 1100 Lo = 5,65 √So -40 ≥ 27 J≤ 0.35 ≤ 1.20 ≤ 0.58 ≥ 11≤ 0.015

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EXPANSION OF THE SINCRON ESTRUTURAL SERIES: INTERNATIONAL STANDARDSAs an addition to the Sincron Estrutural high-resistance weldable steel series, we present, in our portfolio, the EN 10025 and ASTM A572 structural steel produced with the TMCP (Thermo-Mechanical Control Process) process. Due to low equivalent carbon and refined ferritic-bainitic microstructure, they present welding and impact energy absorption capability advantages at low temperatures when compared to steel processed with conventional lamination processes: As rolled and standardized, governed respectively by EN10025-2 and EN10025-3 standards.

(1) Marketed upon request. (2) Charpy test guarantees for EN 10025-4

Temperature Minimum Energy

M -20ºC 40 J

ML -50ºC 27 J

ASTM A572-50 (1) ≤ 0.40 ≤ 1.35 ≤ 0.040 ≤ 0.050 450

16

12.00 - 16.00

≥ 345

EN-10025-4-S355 (1) 22

200 19

12.00 - 16.00

16.01 - 40.00

40.01 - 63.00

63.01- 80.00

EN-10025-4-S420 (1)

16.01- 40.00

40.01 - 63.00

63.01 - 80.00

12.00 - 16.00

16.01 - 40.00

40.01 - 63.00

63.01 - 80.00

12.00 - 16.00

16.01 - 40.00

40.01 - 60.00

12.00 - 16.00

16.01 - 40.00

40.01 - 60.00

12.00 - 16.00

16.01 - 40.00

40.01 - 60.00

12.00 - 16.00

16.01 - 40.00

40.01 - 60.00

EN-10025-4-S460 (1)

≤ 0.23

≤ 0.16

≤ 0.18

≤ 0.55

≤ 0.55

≤ 0.65

≤ 1.70

≤ 1.80

≤ 1.80

≤ 0.035

≤ 0.030

≤ 0.035

≤ 0.030

≤ 0.035

≤ 0.030

≤ 0.030

≤ 0.025

≤ 0.030

≤ 0.025

≤ 0.030

≤ 0.025

(3)

0.39

0.40

0.45

0.39

0.40

0.45

0.47

0.45

0.46

0.47

0.45

0.46

0.46

0.43

0.45

0.40

0.39

0.43

0.45

0.46

0.45

≥ 355

≥ 345

≥ 335

≥ 325

≥ 355

≥ 345

≥ 335

≥ 325

≥ 420

≥ 400

≥ 390

≥ 420

≥ 460

≥ 440

≥ 430

≥ 460

≥ 440

≥ 430

≥ 400

≥390

530 ~ 710

540 ~ 720

530 ~710

540 ~ 720

500 ~ 660

520 ~ 680

500 ~ 660

440 ~ 600

520 ~ 680

450 ~ 610

470 ~ 630

440 ~ 600

450 ~ 610

470 ~ 630

(4)

5.65√So

19

17

TMCP

M

ML

M

ML

ML

M

EN-10025-6-S690 (1) (8) Q/QL/QL1 8.00 - 25.40

EN-10025-6-S890 (1) (8) Q/QL/QL1 8.00 - 19.00

≤ 0.22 ≤ 0.86 ≤ 1.80 ≤ 0.025 ≤ 0.0170.65 ≥ 690 770 ~ 940 14

0.72 ≥ 890 940 ~1100 11

Chemical Composition (% in bulk) Mechanical Properties


Range (mm)Supply

condition

C Si Mn P S Other Ceq max. (5) YS (MPa) TS (Mpa)Elongation

MB (mm)Thickness (mm) %

(3) Other elements as per the standard. (4) The elongation values may vary depending on the measure base and the product thickness. (5) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 (6) Charpy test for grade ASTM A572-50 TMCP upon request. (7) Z and SPWHT narrowing guarantee for all grades upon request. (8) Supply condition: Direct Quenching + Tempering.

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The weldable steel line of high-strength structural Sincron Series Structural is complemented by structural steels of EN 10028-5 standard applied in high-pressure situations. They have advantages in the welding performance and energy absorption capacity to impact at low temperatures compared to processed steel by conventional rolling processes: Standardization and Quenched & Tempered governed by EN 10028-3 and EN 10028-6 respectively.

Chemical Composition (% in bulk) (2) Mechanical Properties

C Si Mn P S Other Ceq (5) YS (MPa) TS (Mpa)Elongation

MB (mm) %

Steel Grade Thickness Range (mm)

Specification

EN-10028-5-P355 M / ML1 / ML2 ≤ 0,16 ≤ 0,025 ≤ 0,015 (3)≥ 355

450 ~ 610 5,65√So≤ 0,55 ≤ 1,70≤ 0,39

≤ 0,40

2212,00 - 40,00

40,01 - 65,00 ≥ 345

(1) Charpy test guarantees for EN 10028 - 5 (Transverse test)

(2) Other elements as per the EN 10028-5 standard. (4) The elongation values may vary depending on the measure base and the product thickness. (4) Z and SPWHT narrowing guarantee upon request. (5) Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 (6) Marketed upon request.

Temperature Minimum Energy

M -20ºC

ML1 -40ºC 27 J

ML2 -50ºC

SALES OFFICE

Belo Horizonte – MG3011 Professor José Vieira de Mendonça StreetEngenho Nogueira - Zip Code 31310-260Phone: (31) 3499-8232 / (31) 3499-8500

São Paulo - SP 277 Do Café Avenue, tower A and 9º floor Ed. Centro Empresarial do Aço Vila Guarani - Zip Code 04311-900 Phone: (11) 5591-5200

Porto Alegre - RS2350 Dos Estados Avenue Humaitá - Zip Code 90200-001 Phone: (51) 2125-5801

Cabo de Santo Agostinho - PETronco Distribuidor Rodoviário Norte Avenue, ZI3 Complexo Industrial Suape - Zip Code 54590-000 Phone: (81) 3527-5400

PLEASE CONTACT US

APPLICATIONS OF SINCRON STRUCTURAL STEELS

There are several benefits in the use of this product line: differentiated performance of equipment in operation, safety and productivity gains for builders and users, as well as flexibility in material selection and specification in the development of industrial machine and equipment projects and metallic structures in general.

MAIN APPLICATIONS

• highway machine components;

• agricultural machine components;

• components of industrial machine;

• cranes;

• hydrogenerators;

• wind towers;

• metallic structures in general.

FINISHING AND SUPPLY CONDITIONS

SURFACE QUALITY Heavy plates are supplied with first quality surface, commercial quality or special quality, as per requirements of their application.

EDGE TYPES Plates can be supplied with natural rolling edges (non-trimmed) or trimmed edges

DIMENSIONAL AND SHAPE TOLERANCES Dimensional and shape tolerances are met in accordance with several standards qualified by Usiminas. Please consult us.

SUPPLY TYPES It can be by weight or exact number of pieces, shipped bulk.

ULTRASONIC TESTING We can guarantee ultrasonic testing, when previously consulted, in accordance with the specifications required by applicable standards (API, ASTM, EN, SEL and others).

IMPACT AND BEND TESTING They are guaranteed for all Naval&Offshore and WHS-Line Structural Sincron line.

MARKINGUsiminas offers several types of marking for heavy plates. Please consult us for the marking evaluation that is most adequate for your product.

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SINCRON - usiminas.com · Sincron steel line by the CLC process. 5 PLATE FINISHING Slab surface and internal quality are ... Controlled rolling process in which the slab is rolled