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DIN 1652-3 Grade 21NiCrMoS2: Cold-Drawn or Peeled Steel for High-Performance Wear-Resistant Applications

The steel 21 NiCrMoS 2 is used for wear loaded parts in the vehicle and mechanical engineering with medium core strength, better machinability, high toughness and high fatigue strength (e.g. gears, shafts, axles). The lowest application amounts to -60 °C, the best application up to 60 mm nominal size.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 - 212.78 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

Hardness, Brinell

20.0 °C

145 - 192 [-]

Poisson's ratio

20.0 °C

0.29 [-]

Shear modulus

20.0 °C

82.8 GPa

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

1.21E-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

Max service temperature, long

-60 - 0 °C

Melting point

1382 - 1529 °C

Typical for Nickel Chromium Molybdenum 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

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

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

0.4 - 0.7 %

Manganese

0.65 - 0.95 %

Molybdenum

0.15 - 0.25 %

Nickel

0.4 - 0.7 %

Phosphorus

0.04 %

Silicon

0.4 %

Sulfur

0.02 - 0.035 %


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