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EN 10084 Grade 20NiCrMo2-2 – Quenched (Q) High-Performance Steel for Automotive & Machinery

Steel 20NiCrMo2-2 is suitable for parts in vehicle manufacturing and machine engineering, which are wear loaded at mean core strength, high ductility and fatigue strength (e.g. gear wheels, shafts, axles).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 - 7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

205 - 212 GPa

100.0 °C

207 GPa

200.0 °C

188 - 199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Nickel Chromium Molybdenum Steel

Shear modulus

20.0 °C

79 GPa

Tensile strength

20.0 °C

600 - 1100 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.1E-5 - 1.21E-5 1/K

200.0 °C

1.27E-5 1/K

300.0 °C

1.32E-5 1/K

400.0 °C

1.36E-5 1/K

500.0 °C

1.4E-5 1/K

600.0 °C

1.44E-5 1/K

Melting point

1382 - 1529 °C

Typical for Nickel Chromium Molybdenum Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

460 - 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 - 46.3 W/(m·K)

100.0 °C

47.1 W/(m·K)

200.0 °C

46.2 W/(m·K)

300.0 °C

44.1 W/(m·K)

400.0 °C

41.3 W/(m·K)

500.0 °C

38.6 W/(m·K)

600.0 °C

35.9 W/(m·K)

Thermal diffusivity

20.0 °C

12.8 mm²/s

100.0 °C

12.1 mm²/s

200.0 °C

11.1 mm²/s

300.0 °C

10 mm²/s

400.0 °C

8.8 mm²/s

500.0 °C

7.4 mm²/s

600.0 °C

4.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.6E-7 - 2.25E-7 Ω·m

100.0 °C

2.72E-7 Ω·m

200.0 °C

3.42E-7 Ω·m

300.0 °C

4.26E-7 Ω·m

400.0 °C

5.26E-7 Ω·m

500.0 °C

6.4E-7 Ω·m

600.0 °C

7.73E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.17 - 0.23 %

Chromium

0.35 - 0.7 %

Copper

0.4 %

Manganese

0.65 - 0.95 %

Molybdenum

0.15 - 0.25 %

Nickel

0.4 - 0.7 %

Phosphorus

0.03 %

Silicon

0.15 - 0.4 %

Sulfur

0.035 %


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