EN 10263-4 Grade 25CrMo4 quenched and tempered (+QT)
EN 10263-4 Grade 25CrMo4 quenched and tempered (+QT) introduction
The cold-upsettable steel 25 CrMo 4 can be cold-formed with a medium to high rate of forming according to the usual forming methods on single-stage and multi-stage presses. It is used for screws and pressed parts of strength class in the medium dimension range.
Equivalent material: NBN 25CrMo4, GB ML30CrMo, CSN 15130, AFNOR 25CD4, BS 708M25, GOST 30ChM, ISO C30, UNI 25CrMo4KB, JIS SCM430, PN 25HM, SS 2245, UNE F.1251-30CrMo4, ASTM 4130, DIN 1.7214, AFNOR 25 CD 4 S, AFNOR 9160C083, AFNOR 9160/C 39, AFNOR 25CrMo4, BS FE-PL1502, BS 25CrMo4, AISI 4130, SAE 4130, EN 25CrMo4, EN 1.7214, UNS J24056, IS 26Cr4Mo2, DIN 1.7218, BS 1717CDS110, BS 708A25, UNI 25CrMo4(KB), SS 2225, UNE 55Cr3, AISI 4130H, SAE 4130H, JIS SM420, JIS SCM420, JIS SCCrM1A, JIS SCCrM1B, EN 1.7218, ASTM 4130H, UNS G41300, UNS H41300
EN 10263-4 Grade 25CrMo4 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 g/cm³ |
EN 10263-4 Grade 25CrMo4 quenched and tempered (+QT) 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 0 - 200 °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 10263-4 Grade 25CrMo4 quenched and tempered (+QT) 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 0.035 % |
EN 10263-4 Grade 25CrMo4 quenched and tempered (+QT) 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 10263-4 Grade 25CrMo4 quenched and tempered (+QT) 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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