EN 10277-2 Grade C40 cold drawn
EN 10277-2 Grade C40 cold drawn introduction
Steel C40 is suitable for larger forged parts in vehicle and machine engineering (e.g. road wheels, axles). Lowest application temperature -25°C.
As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).
Equivalent material: NBN C40-1, AFNOR XC42H1, BS 080M40, GOST 40, ISO C40, UNI C40, PN 40, ASTM 1040, DIN C40, AS 1040, GB 40, GB U20402, ASTM A108 Grade 1040, SAE 1040, UNS G10400, DIN 1.0511, AFNOR C40, AFNOR AF60, BS 40CS, BS 40HS, BS En8, BS C40, AISI 1040, JIS S40C, JIS SWRH42B, JIS SWRCH40K, JIS S38C, EN 1.0511, ISO CS40, GB/T 40, GB/T U20402, GB/T ML40, ASTM Grade 1040, ASTM Grade SC1040
EN 10277-2 Grade C40 cold drawn general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 - 7.85 g/cm³ |
EN 10277-2 Grade C40 cold drawn 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 1380 - 1514 °C |
Typical for Medium Carbon Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 461 - 480 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 - 500 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 - 550 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 - 590 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 44.9 - 52 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 46.2 - 50.6 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 45.5 - 48.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 43.1 - 45.7 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 40.4 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 37.7 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 34.9 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 12.5 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 12 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 11 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.8 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.6 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.3 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.9 mm²/s |
- |
EN 10277-2 Grade C40 cold drawn chemical
| Property |
Value |
| Carbon |
Carbon of 0.37 - 0.44 % |
| Chromium |
Chromium of 0.4 % |
| Manganese |
Manganese of 0.5 - 0.8 % |
| 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 10277-2 Grade C40 cold drawn electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 1.2E-7 - 2.32E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.77E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.47E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.35E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.38E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.56E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.95E-7 Ω·m |
EN 10277-2 Grade C40 cold drawn mechanical
| Property |
Temperature |
Value |
| 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 6 - 9 % |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.28 [-] |
| Shear modulus |
20.0 °C |
Shear modulus of 81 GPa |
| Tensile strength |
20.0 °C |
Tensile strength of 550 - 1000 MPa |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 290 - 540 MPa |
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