EN 10277-5 Grade 25CrMoS4 cold drawn
EN 10277-5 Grade 25CrMoS4 cold drawn 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 general
| Property | Temperature | Value |
|---|---|---|
| Density | 20.0 °C | Density of 7.83 g/cm³ |
EN 10277-5 Grade 25CrMoS4 cold drawn 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 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 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 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 | - |
| Poisson's ratio | 23.0 °C | Poisson's ratio of 0.29 [-] | Typical for Chromium Molybdenum Steel |
| Tensile strength | 20.0 °C | Tensile strength of 840 - 880 MPa | - |
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