EN 10083-2 Grade C40E quenched and tempered (+QT)
EN 10083-2 Grade C40E quenched and tempered (+QT) introduction
Steel C40E is suitable for heat-resistant screws and larger forged parts as well as for parts of more complex form (e.g. gear wheels, camshafts) in vehicle manufacturing and machine engineering.
As a bright steel product it is used in the form of bars, bright, straight, in different conditions (see DIN EN 10277).
Equivalent material: GB 40, GB U20402, IS 40C8, ISO C40E, JIS S40C, KS SM40C, GOST 40, ASTM A29 Grade 1040, ASTM A510 Grade 1040, ASTM A576 Grade 1040, ASTM A827 Grade 1040, UNS G10400, SAE 1040, DIN Ck40, EN 1.1186, ASTM A830 Grade 1040, DIN 1.1186, DIN C40E, AFNOR C40E, AFNOR 9160C021, AFNOR 9160/C23, AFNOR XC38, AFNOR XC42H1, BS C40E, BS 40CS, BS 40HS, BS En8, BS 080M40, BS CS40, UNI C40, AISI 1040, JIS 37H, JIS 50, JIS 30H, JIS 40NH, JIS 50NH, ISO C40E4, ISO CE40E4, ISO CS40, ISO S40C, GB/T 40, GB/T U20402, GB/T ML40
EN 10083-2 Grade C40E quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.82 - 7.85 g/cm³ |
EN 10083-2 Grade C40E 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 |
| 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 10083-2 Grade C40E quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.37 - 0.44 % |
| Chromium |
Chromium of 0.4 % |
| Copper |
Copper of 0.3 % |
| Manganese |
Manganese of 0.5 - 0.8 % |
| Molybdenum |
Molybdenum of 0.1 % |
| Nickel |
Nickel of 0.4 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.1 - 0.4 % |
| Sulfur |
Sulfur of 0.035 % |
EN 10083-2 Grade C40E quenched and tempered (+QT) 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 10083-2 Grade C40E 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 16 - 19 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Medium Carbon Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 35 - 45 % |
- |
| Shear modulus |
20.0 °C |
Shear modulus of 81 GPa |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 600 - 800 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 350 - 460 MPa |
- |
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