EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered introduction
Steel 25 CrMoS 4 is suitable for parts of high strength and ductility requirements at mean and higher heat-treatment sections and enhanced workability in vehicle manufacturing, engine and machine engineering (e.g. crankshafts, steering knuckles, pinions). Lowest application temp. -40 °C.
Equivalent material: AFNOR 25CD4u, BS 708M25, ISO 25CrMoS4, UNI 25CrMo4, SS 2225, UNE F.1256-30CrMo4-1, DIN 1.7213, EN 25CrMoS4, EN 1.7213
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 g/cm³ |
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.05E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.15E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.21E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.27E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.32E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.4E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.44E-5 1/K |
- |
| Max service temperature, long |
- |
Max service temperature, long of -40 - 0 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 461 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 536 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 558 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 587 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 41 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 42.7 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 42.8 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.6 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 39.9 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 37.8 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 35.6 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 11.4 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 11 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.3 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.5 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.5 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.3 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 6 mm²/s |
- |
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered chemical
| Property |
Value |
| Carbon |
Carbon of 0.22 - 0.29 % |
| Chromium |
Chromium of 0.9 - 1.2 % |
| Manganese |
Manganese of 0.6 - 0.9 % |
| Molybdenum |
Molybdenum of 0.15 - 0.3 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.02 - 0.035 % |
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.54E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 3E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.69E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.51E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.45E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.54E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.78E-7 Ω·m |
EN 10277-5 Grade 25CrMoS4 cold drawn or turned and quenched and tempered mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 12 - 15 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Chromium Molybdenum Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 50 - 60 % |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 700 - 1100 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 450 - 700 MPa |
- |
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