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Buderus Plastic Mould Steel 2767 ISO-B Buderus Edelstahl GmbH l Steel Bar Sales l Buderusstraße 25 l D-35576 Wetzlar Telephone +49 (0) 64 41-374 2468 l Fax +49 (0) 64 41-374 2784 l [email protected] l www.buderus-steel.com C Si Mn P S Cr Ni Mo Typical analysis 0.45 0.25 0.30 0.025 0.003 1.30 4.00 0.25 Chemical composition as per SEL 0.40– 0.50 0.10– 0.40 0.20– 0.50 0.030 0.030 1.20– 1.50 3.80– 4.30 0.15– 0.35 Figures in % by mass Register of European Steels (SEL) 45 NiCrMo 16 DIN EN ISO 4957 45 NiCrMo 16 AFNOR 45 NCD 16 AISI 6 F 7 Characteristics Low-distortion, air through-hardening nickel-alloy tool steel with very good toughness; polishable, grain-reliable. Applications Highly stressed compression and injection moulds such as tailgates, mudguards; mould inserts for high hardness and abrasive stress. Blanking dies for very thick materials (sheet steel up to 12 mm thick), billet shearing blades, industrial blades. Cutlery presses and stamping dies, forging dies, mandrel holders for extrusion mandrels. Delivered condition Annealed to max. 285 HB We recommend contour hardening for large moulds. Physical properties (reference values) Thermal expansion coefficient (10 –6 /K) 20–100 °C 11.0 20–250 °C 12.2 20–500 °C 13.7 Thermal conductivity (W/mK) 20 °C 31.0 250 °C 30.0 500 °C 32.0 Young’s modulus (GPa) 20 °C 215 250 °C 198 500 °C 179 l Buderus Plastic Mould Steel 2767 ISO-B

Buderus Plastic Mould Steel 2767 ISO-B...Cutlery presses and stamping dies, forging dies, mandrel holders for extrusion mandrels. Delivered condition Annealed to max. 285 HB We recommend

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Page 1: Buderus Plastic Mould Steel 2767 ISO-B...Cutlery presses and stamping dies, forging dies, mandrel holders for extrusion mandrels. Delivered condition Annealed to max. 285 HB We recommend

Bude

rus

Plas

tic

Mou

ld S

teel

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O-B

Buderus Edelstahl GmbH l Steel Bar Sales l Buderusstraße 25 l D-35576 WetzlarTelephone +49 (0) 64 41-374 2468 l Fax +49 (0) 64 41-374 2784 l [email protected] l www.buderus-steel.com

C Si Mn P S Cr Ni MoTypical analysis 0.45 0.25 0.30 0.025 0.003 1.30 4.00 0.25

Chemical composition as per SEL

0.40–0.50

0.10–0.40

0.20–0.50

≤0.030

≤ 0.030

1.20–1.50

3.80–4.30

0.15–0.35

Figures in % by mass

Register of European Steels (SEL)

45 NiCrMo 16

DIN EN ISO 4957 45 NiCrMo 16

AFNOR 45 NCD 16

AISI 6 F 7

CharacteristicsLow-distortion, air through-hardening nickel-alloy tool steel with very good toughness; polishable, grain-reliable.

ApplicationsHighly stressed compression and injection moulds such as tailgates, mudguards; mould inserts for high hardness and abrasive stress.Blanking dies for very thick materials (sheet steel up to 12 mm thick), billet shearing blades, industrial blades.Cutlery presses and stamping dies, forging dies, mandrel holders for extrusion mandrels.

Delivered conditionAnnealed to max. 285 HB We recommend contour hardening for large moulds.

Physical properties (reference values)Thermal expansion coefficient (10–6/K)

20–100 °C11.0

20–250 °C12.2

20–500 °C13.7

Thermal conductivity(W/mK)

20 °C31.0

250 °C30.0

500 °C32.0

Young’s modulus (GPa)

20 °C215

250 °C198

500 °C179

l Buderus Plastic Mould Steel 2767 ISO-B

Page 2: Buderus Plastic Mould Steel 2767 ISO-B...Cutlery presses and stamping dies, forging dies, mandrel holders for extrusion mandrels. Delivered condition Annealed to max. 285 HB We recommend

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Heat treatment

Stress relieving Temperature: Approx. 600 °C in the annealed stateDuration: 1 hour per 50 mm wall thicknessCooling: Furnace

Soft annealing Temperature: 650 °CDuration: 1 hour per 25 mm wall thicknessCooling: Air

Hardening Temperature: 870 °CDuration: 1 minute per mm wall thickness

Quenching hardness Max. 56 HRC in oil, hot bath, air or vacuum

Tempering Temperature: See tempering curveDuration: 1 hour per 25 mm wall thicknessCooling: Air

Working hardness 50–54 HRC (temper at least twice 220 °C)

Note: If soft annealing is required: do not exceed annealing temperature, hold at temperature for the full annealing time!In the case of oil hardening, do not leave tools to cool down in the oil.

Tempering curve

TTT curve (continuous)

l 2767 ISO-B

40424446485052545658606264

0 100 200 300 400 500 600 700 800373392413436

(461)

HB

Har

dnes

s in

HRC

Tempering temperature in °C

Average values on samples dia. 25 x 50 mm longhardened at 870 °C in oilHB converted from HRC

100

200

300

400

500

600

700

800

900

1000

1100

1200

01 10 102 103 104 105 106

1 10 100 1000 10 000

676 657 637 631 565

9494

55558383

808055

3535

468 255399668

1010

634

<1<1�5�5 �5�5

Tem

pera

ture

in °

C

Time

Seconds

Minutes

Austenitising temperature: 870 °C

Ac1e

Ac1b

P

M

Ms

A + C

B

Retained austenite