DIN 1652-3 Grade 21NiCrMo2 Cold Drawn Steel – High-Performance, Wear-Resistant Gear & Shaft Material
The steel 21 NiCrMo 2 respectively 23 NiCrMo 2 is used for wear loaded parts in the vehicle and mechanical engineering with medium core strength, 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
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.84 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
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 | |
Poisson's ratio | 20.0 °C | 0.29 [-] |
Shear modulus | 20.0 °C | 82.8 GPa |
Tensile strength | 20.0 °C | 750 - 820 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
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
| Property | Temperature | Value |
|---|---|---|
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
| Property | Value |
|---|---|
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 | 0.035 % |
Metal
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