EN 10269 Grade 34CrNiMo6 quenched and tempered (+QT)
EN 10269 Grade 34CrNiMo6 quenched and tempered (+QT) introduction
Steel 34CrNiMo6 is suitable for high-stress components (also large forged parts) with high heat-treatment cross-sections and good toughness properties in aircraft, heavy vehicle and machine construction (e.g. propeller shafts, connecting rods, gearbox shafts). Lowest working temperature -40 °C
The steel as a bright steel product is used in the form of rods, blank, straight, in different conditions (see DIN EN 10277 : 1999-10).
Further application for mounting elements at lower temperatures.
Equivalent material: NBN 35CrNiMo6, BS 817M40, GOST 38Ch2N2MA, ISO 36CrNiMo6, UNI 35NiCrMo6, JIS SNCM447, PN 34HNM, SS 2541, ASTM 4340, DIN 34CrNiMo6, ASTM L43, AISI 4340, SAE 4340, UNS G43400, ASTM A320 Grade L43, DIN 34CrNiMo6S, DIN 1.6582, DIN GS-34CrNiMo6, DIN 34CrNiMo6V, DIN 35CrNiMo6, AFNOR 35NCD6, AFNOR 34CrNiMo8, BS 816M40, BS EN24, UNI 35NiCrMo6(KB), UNE F.127, JIS SNCM431, EN 34CrNiMo6V, EN 1.6582, ASTM 4337, IS 40Ni2Cr1Mo28
EN 10269 Grade 34CrNiMo6 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 - 7.85 g/cm³ |
EN 10269 Grade 34CrNiMo6 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 1.4E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.44E-5 1/K |
- |
| Max service temperature, long |
- |
Max service temperature, long of -40 - 0 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Nickel 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 33.7 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 36.2 - 50.3 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 37.8 - 49 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 37.2 - 47.8 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 35.7 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 34 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 32 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 9.4 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 9.4 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 9.2 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 8.5 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 7.6 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 6.6 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.4 mm²/s |
- |
EN 10269 Grade 34CrNiMo6 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.3 - 0.38 % |
| Chromium |
Chromium of 1.3 - 1.7 % |
| Manganese |
Manganese of 0.5 - 0.8 % |
| Molybdenum |
Molybdenum of 0.15 - 0.3 % |
| Nickel |
Nickel of 1.3 - 1.7 % |
| Phosphorus |
Phosphorus of 0.03 - 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.035 % |
EN 10269 Grade 34CrNiMo6 quenched and tempered (+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 3.09E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 3.54E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 4.18E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 5.05E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 6.09E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 7.27E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.67E-7 Ω·m |
EN 10269 Grade 34CrNiMo6 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 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 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 14 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Nickel Chromium Molybdenum Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 40 - 52 % |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 800 - 1200 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 640 - 940 MPa |
- |
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