EN 10277-5 Grade 28Cr4 cold drawn

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Description

Steel 28 Cr 4 is suitable for smaller parts of a little higher load in vehicle manufacturing, engine and machine engineering (e.g. transmission gears, drive shafts). Lowest application temp. -25 °C.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.83 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

217 GPa

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20.0 °C

212 GPa

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100.0 °C

207 GPa

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200.0 °C

199 GPa

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300.0 °C

192 GPa

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400.0 °C

184 GPa

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500.0 °C

175 GPa

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600.0 °C

164 GPa

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Poisson's ratio

20.0 °C

0.28 [-]

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Tensile strength

20.0 °C

860 - 950 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

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20.0 °C

1.15E-5 1/K

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100.0 °C

1.21E-5 1/K

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200.0 °C

1.27E-5 1/K

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300.0 °C

1.32E-5 1/K

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400.0 °C

1.36E-5 1/K

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500.0 °C

1.4E-5 1/K

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600.0 °C

1.44E-5 1/K

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Max service temperature, long

-25 - 0 °C

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Melting point

1382 - 1529 °C

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Typical for Chromium Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

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20.0 °C

461 J/(kg·K)

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100.0 °C

479 J/(kg·K)

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200.0 °C

499 J/(kg·K)

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300.0 °C

517 J/(kg·K)

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400.0 °C

536 J/(kg·K)

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500.0 °C

558 J/(kg·K)

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600.0 °C

587 J/(kg·K)

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Thermal conductivity

20.0 °C

45.1 W/(m·K)

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100.0 °C

45.1 W/(m·K)

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200.0 °C

44.1 W/(m·K)

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300.0 °C

41.9 W/(m·K)

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400.0 °C

39.4 W/(m·K)

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500.0 °C

36.9 W/(m·K)

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600.0 °C

34.4 W/(m·K)

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Thermal diffusivity

20.0 °C

12.5 mm²/s

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100.0 °C

11.6 mm²/s

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200.0 °C

10.6 mm²/s

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300.0 °C

9.5 mm²/s

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400.0 °C

8.4 mm²/s

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500.0 °C

7.1 mm²/s

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600.0 °C

5.8 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.31E-7 Ω·m

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100.0 °C

2.84E-7 Ω·m

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200.0 °C

3.58E-7 Ω·m

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300.0 °C

4.48E-7 Ω·m

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400.0 °C

5.52E-7 Ω·m

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500.0 °C

6.71E-7 Ω·m

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600.0 °C

8.06E-7 Ω·m

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Chemical properties

PropertyValue

Carbon

0.24 - 0.31 %

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Chromium

0.9 - 1.2 %

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Manganese

0.6 - 0.9 %

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Phosphorus

0.04 %

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Silicon

0.4 %

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Sulfur

0.03 %

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