EN 10250-2 Grade C25 normalized and tempered (+NT)
EN 10250-2 Grade C25 normalized and tempered (+NT) introduction
Steel C25 is suitable for low strained parts of small heat-treatment sections in vehicle and machine engineering (e.g. piston rods, gear wheels).
Equivalent material: AS S1025, GB 25, GB U20252, JIS S25C, GOST 25, ASTM A521 Grade 1025, SAE 1025, UNS G10250, DIN 1.0406, DIN C25, AFNOR C25, BS C25, AISI 1025, EN 1.0406, ISO C25, GB/T 25, GB/T U20252, ASTM M1025, ASTM Grade 1025
EN 10250-2 Grade C25 normalized and tempered (+NT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 g/cm³ |
EN 10250-2 Grade C25 normalized and tempered (+NT) 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 1.25E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.3E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 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 |
| 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 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 |
-100.0 °C |
Thermal conductivity of 37.6 W/(m·K) |
- |
| - |
20.0 °C |
Thermal conductivity of 42.2 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 43.2 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 42.9 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.2 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 10250-2 Grade C25 normalized and tempered (+NT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.22 - 0.29 % |
| Chromium |
Chromium of 0.4 % |
| 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 0.4 % |
| Sulfur |
Sulfur of 0.045 % |
EN 10250-2 Grade C25 normalized and tempered (+NT) magnetic
| Property |
Value |
Comment |
| Curie temperature |
Curie temperature of 770 °C |
Typical for Low Carbon Steel |
EN 10250-2 Grade C25 normalized and tempered (+NT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
-100.0 °C |
Electrical resistivity of 1.82E-7 Ω·m |
| - |
20.0 °C |
Electrical resistivity of 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 10250-2 Grade C25 normalized and tempered (+NT) 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 22 - 23 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 16 - 17 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Low Carbon Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 82 GPa |
Typical for Low Carbon Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 390 - 440 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 390 - 420 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 180 - 230 MPa |
- |
| Yield strength, transverse |
20.0 °C |
Yield strength, transverse of 180 - 210 MPa |
- |
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