DIN 1652-3 Grade 20MoCrS4: Ferritic-Pearlite Structure & Cold-Drawn for High-Performance Applications
The steel 20 MoCrS 4 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
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.83 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
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 | ||
Hardness, Brinell | 20.0 °C | 140 - 287 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Chromium Molybdenum Steel |
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 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 | 41 W/(m·K) | |
100.0 °C | 42.7 W/(m·K) | ||
200.0 °C | 42.8 W/(m·K) | ||
300.0 °C | 41.6 W/(m·K) | ||
400.0 °C | 39.9 W/(m·K) | ||
500.0 °C | 37.8 W/(m·K) | ||
600.0 °C | 35.6 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 11.4 mm²/s | |
100.0 °C | 11 mm²/s | ||
200.0 °C | 10.3 mm²/s | ||
300.0 °C | 9.5 mm²/s | ||
400.0 °C | 8.5 mm²/s | ||
500.0 °C | 7.3 mm²/s | ||
600.0 °C | 6 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 2.54E-7 Ω·m |
100.0 °C | 3E-7 Ω·m | |
200.0 °C | 3.69E-7 Ω·m | |
300.0 °C | 4.51E-7 Ω·m | |
400.0 °C | 5.45E-7 Ω·m | |
500.0 °C | 6.54E-7 Ω·m | |
600.0 °C | 7.78E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.17 - 0.22 % |
Chromium | 0.3 - 0.6 % |
Manganese | 0.7 - 1 % |
Molybdenum | 0.4 - 0.5 % |
Phosphorus | 0.04 % |
Silicon | 0.4 % |
Sulfur | 0.02 - 0.035 % |
Metal
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