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EN 10263-4 Grade 46Cr2 Quenched & Tempered Steel: High-Strength, Precision-Engineered for Heavy-Duty Fasteners

Because of its high carbon content, the cold-upsettable steel 46 Cr 2 can be processed in cold condition only with a small to medium rate of forming. It is used for screws and bolts of strength class 8.8 in the lower dimension range. The steel 46 Cr 2 will be replaced with steel 35 B 2.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation

20.0 °C

12 - 15 %

Poisson's ratio

20.0 °C

0.28 [-]

Reduction of area

20.0 °C

35 - 45 %

Tensile strength

20.0 °C

650 - 1100 MPa

Yield strength

20.0 °C

400 - 650 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.25E-5 1/K

200.0 °C

1.3E-5 1/K

300.0 °C

1.36E-5 1/K

400.0 °C

1.41E-5 1/K

500.0 °C

1.45E-5 1/K

600.0 °C

1.49E-5 1/K

Melting point

1382 - 1529 °C

Typical for Chromium Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

20.0 °C

44.9 W/(m·K)

100.0 °C

46.2 W/(m·K)

200.0 °C

45.5 W/(m·K)

300.0 °C

43.1 W/(m·K)

400.0 °C

40.4 W/(m·K)

500.0 °C

37.7 W/(m·K)

600.0 °C

34.9 W/(m·K)

Thermal diffusivity

20.0 °C

12.5 mm²/s

100.0 °C

12 mm²/s

200.0 °C

11 mm²/s

300.0 °C

9.8 mm²/s

400.0 °C

8.6 mm²/s

500.0 °C

7.3 mm²/s

600.0 °C

5.9 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.32E-7 Ω·m

100.0 °C

2.77E-7 Ω·m

200.0 °C

3.47E-7 Ω·m

300.0 °C

4.35E-7 Ω·m

400.0 °C

5.38E-7 Ω·m

500.0 °C

6.56E-7 Ω·m

600.0 °C

7.95E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.42 - 0.5 %

Chromium

0.4 - 0.6 %

Manganese

0.5 - 0.8 %

Phosphorus

0.04 %

Silicon

0.4 %

Sulfur

0.035 %


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