EN 10083-2 Grade C25 quenched and tempered (+QT)
EN 10083-2 Grade C25 quenched and tempered (+QT) introduction
Steel C25 is suitable for low strained parts of small heat-treatment sections in vehicle manufacturing and machine engineering (e.g. gear wheels, piston rods). Lowest working temperature -25 °C.
Equivalent material: NBN C25-1, BS 070M26, GOST 25, ISO C25, UNI C25, PN 25, ASTM 1025, DIN C25, GB 25, GB U20252, EN 1.0406, IS 25C4, JIS S25C, ASTM A830 Grade 1025, SAE 1025, UNS G10250, DIN 1.0406, AFNOR C25, BS C25, AISI 1025, GB/T 25, GB/T U20252, ASTM M1025, ASTM Grade 1025
EN 10083-2 Grade C25 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 - 7.85 g/cm³ |
EN 10083-2 Grade C25 quenched and tempered (+QT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.08E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.19E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.11E-5 - 1.25E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.21E-5 - 1.3E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.29E-5 - 1.36E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.35E-5 - 1.41E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.45E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.49E-5 1/K |
- |
| Max service temperature |
- |
Max service temperature of 500 °C |
Typical for Carbon Steel |
| Max service temperature, long |
- |
Max service temperature, long of -25 - 0 °C |
- |
| Melting point |
- |
Melting point of 1480 - 1526 °C |
Typical for Low Carbon Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 460 - 461 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 - 480 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 - 520 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 536 - 610 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 |
-100.0 °C |
Thermal conductivity of 37.6 W/(m·K) |
- |
| - |
20.0 °C |
Thermal conductivity of 42.2 - 52 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 43.2 - 51 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 42.9 - 49 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.2 - 46 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 39.1 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 36.6 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 34.1 W/(m·K) |
- |
| Thermal diffusivity |
-100.0 °C |
Thermal diffusivity of 12.9 mm²/s |
- |
| - |
20.0 °C |
Thermal diffusivity of 11.7 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 11.2 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.3 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.4 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.3 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.1 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.7 mm²/s |
- |
EN 10083-2 Grade C25 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.22 - 0.29 % |
| Chromium |
Chromium of 0.4 % |
| Copper |
Copper of 0.3 % |
| Manganese |
Manganese of 0.4 - 0.7 % |
| Molybdenum |
Molybdenum of 0.1 % |
| Nickel |
Nickel of 0.4 % |
| Phosphorus |
Phosphorus of 0.05 % |
| Silicon |
Silicon of 0.1 - 0.4 % |
| Sulfur |
Sulfur of 0.045 % |
EN 10083-2 Grade C25 quenched and tempered (+QT) magnetic
| Property |
Value |
Comment |
| Curie temperature |
Curie temperature of 770 °C |
Typical for Low Carbon Steel |
EN 10083-2 Grade C25 quenched and tempered (+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
-100.0 °C |
Electrical resistivity of 1.82E-7 Ω·m |
| - |
20.0 °C |
Electrical resistivity of 1.2E-7 - 2.47E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.96E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.68E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.55E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.56E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.75E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.13E-7 Ω·m |
EN 10083-2 Grade C25 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 210 - 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 205 - 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 195 - 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 185 - 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 175 - 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 19 - 21 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Low Carbon Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 45 - 50 % |
- |
| Shear modulus |
20.0 °C |
Shear modulus of 81 GPa |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 500 - 700 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 320 - 370 MPa |
- |
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