EN 10277-5 Grade 34CrNiMo6: Soft Annealed & Cold Drawn Steel for High-Performance Applications
Steel 25CrMoS4 is suitable for high loaded parts (also heavy forged parts) of high heat-treatment sections as well as favorable ductility qualities in aircraft, heavy vehicle and machine engineering (e.g. propellershafts, connecting rods, transmission shafts). Lowest application temperature -40°C. As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.8 - 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | -100.0 °C | 217 GPa | |
20.0 °C | 210 - 212 GPa | ||
100.0 °C | 205 - 207 GPa | ||
200.0 °C | 195 - 199 GPa | ||
300.0 °C | 185 - 192 GPa | ||
400.0 °C | 184 GPa | ||
500.0 °C | 175 GPa | ||
600.0 °C | 164 GPa | ||
Hardness, Brinell | 20.0 °C | 288 - 308 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Nickel Chromium Molybdenum Steel |
Shear modulus | 20.0 °C | 81 GPa | |
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 | 1.11E-5 - 1.21E-5 1/K | ||
200.0 °C | 1.21E-5 - 1.27E-5 1/K | ||
300.0 °C | 1.29E-5 - 1.32E-5 1/K | ||
400.0 °C | 1.35E-5 - 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 | -40 - 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 | 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 | 33.7 - 42 W/(m·K) | |
100.0 °C | 36.2 - 50.3 W/(m·K) | ||
200.0 °C | 37.8 - 49 W/(m·K) | ||
300.0 °C | 37.2 - 47.8 W/(m·K) | ||
400.0 °C | 35.7 W/(m·K) | ||
500.0 °C | 34 W/(m·K) | ||
600.0 °C | 32 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 9.4 mm²/s | |
100.0 °C | 9.4 mm²/s | ||
200.0 °C | 9.2 mm²/s | ||
300.0 °C | 8.5 mm²/s | ||
400.0 °C | 7.6 mm²/s | ||
500.0 °C | 6.6 mm²/s | ||
600.0 °C | 5.4 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.9E-7 - 3.09E-7 Ω·m |
100.0 °C | 3.54E-7 Ω·m | |
200.0 °C | 4.18E-7 Ω·m | |
300.0 °C | 5.05E-7 Ω·m | |
400.0 °C | 6.09E-7 Ω·m | |
500.0 °C | 7.27E-7 Ω·m | |
600.0 °C | 8.67E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.3 - 0.38 % |
Chromium | 1.3 - 1.7 % |
Manganese | 0.5 - 0.8 % |
Molybdenum | 0.15 - 0.3 % |
Nickel | 1.3 - 1.7 % |
Phosphorus | 0.03 - 0.04 % |
Silicon | 0.4 % |
Sulfur | 0.035 % |
Metal
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