EN 10277-5 Grade C40R cold drawn
EN 10277-5 Grade C40R cold drawn introduction
Steel C40R is suitable for slightly higher loaded parts in vehicle, engine and machine engineering with enhanced workability at constant mechanical qualities (e.g. transmission parts, crank shafts, cylinder). 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 C40-3, AFNOR XC42H1u, BS 080M40, ISO C40M2, UNI C40, DIN Cm40, ISO C40R, ASTM A108 Grade 1040, SAE 1040, UNS G10400, DIN 1.1189, DIN Cm 40, DIN C40R, AFNOR C40R, BS C40R, AISI 1040, EN 1.1189
EN 10277-5 Grade C40R cold drawn general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.82 - 7.85 g/cm³ |
EN 10277-5 Grade C40R 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 48 - 52 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 48.9 - 50.6 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 47.5 - 48.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 44.7 - 45.7 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 41.6 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 38.6 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 35.5 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 13.3 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 12.6 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 11.5 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 10.2 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.9 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.5 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 6 mm²/s |
- |
EN 10277-5 Grade C40R 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 0.03 - 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.02 - 0.04 % |
EN 10277-5 Grade C40R cold drawn electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 1.2E-7 - 2.17E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.62E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.32E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.2E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.23E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.41E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.8E-7 Ω·m |
EN 10277-5 Grade C40R cold drawn 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 6 - 9 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Medium Carbon Steel |
| 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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