DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT)
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) introduction
High temperature steel for screws and bolts up to 540 °C.
Equivalent material: BS 670, ISO 40CrMoV4-6, JIS SNB16, ÖNORM 40CrMoV4-7S, DIN 40CrMoV4-6, DIN 1.7711, AFNOR 40CrMoV4-6, BS 670-860, AISI A193B16, SAE A193B16, JIS SNB21-1, JIS SNB21-2, JIS SNB21-3, JIS SNB21-4, JIS SNB21-5, EN 40CrMoV4-7, EN 40CrMoV4-6, EN 1.7711, ASTM Grade B16, ASTM B4D, UNS K14675, UNS K14072
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 g/cm³ |
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.05E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.15E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.11E-5 - 1.21E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.21E-5 - 1.27E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.29E-5 - 1.32E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.35E-5 - 1.36E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.39E-5 - 1.4E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.41E-5 - 1.44E-5 1/K |
- |
| Max service temperature, long |
- |
Max service temperature, long of 0 - 540 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum 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 |
20.0 °C |
Thermal conductivity of 45.1 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 45.1 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 44.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.9 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 39.4 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 36.9 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 34.4 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 12.5 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 11.6 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.6 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.5 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.4 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.1 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.8 mm²/s |
- |
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.36 - 0.44 % |
| Chromium |
Chromium of 0.9 - 1.2 % |
| Manganese |
Manganese of 0.35 - 0.85 % |
| Molybdenum |
Molybdenum of 0.6 - 0.75 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.035 % |
| Vanadium |
Vanadium of 0.25 - 0.35 % |
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.31E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.84E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.58E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.48E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.52E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.71E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.06E-7 Ω·m |
DIN 17240 Grade 40CrMoV4-7 quenched and tempered (+QT) mechanical
| Property |
Temperature |
Value |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
| - |
20.0 °C |
Elastic modulus of 212 GPa |
| - |
100.0 °C |
Elastic modulus of 204 - 207 GPa |
| - |
200.0 °C |
Elastic modulus of 196 - 199 GPa |
| - |
300.0 °C |
Elastic modulus of 186 - 192 GPa |
| - |
400.0 °C |
Elastic modulus of 177 - 184 GPa |
| - |
500.0 °C |
Elastic modulus of 164 - 175 GPa |
| - |
600.0 °C |
Elastic modulus of 127 - 164 GPa |
| Elongation |
20.0 °C |
Elongation of 14 % |
| Hardness, Brinell |
20.0 °C |
Hardness, Brinell of 250 - 295 [-] |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.28 [-] |
| Reduction of area |
20.0 °C |
Reduction of area of 45 % |
| Tensile strength |
20.0 °C |
Tensile strength of 850 - 1000 MPa |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 700 MPa |
| - |
200.0 °C |
Yield strength Rp0.2 of 635 MPa |
| - |
250.0 °C |
Yield strength Rp0.2 of 617 MPa |
| - |
300.0 °C |
Yield strength Rp0.2 of 598 MPa |
| - |
350.0 °C |
Yield strength Rp0.2 of 578 MPa |
| - |
400.0 °C |
Yield strength Rp0.2 of 540 MPa |
| - |
450.0 °C |
Yield strength Rp0.2 of 500 MPa |
| - |
500.0 °C |
Yield strength Rp0.2 of 460 MPa |
| - |
550.0 °C |
Yield strength Rp0.2 of 403 MPa |
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