AISI 4340 Normalized
Equivalent material: DIN 1.6563, DIN 41NiCrMo7-3-2, BS S 149, SAE 4340, EN 41NiCrMo7-3-2, EN 1.6563, ASTM 4340, UNS G43400, DIN 1.6582, DIN 34CrNiMo6, DIN GS-34CrNiMo6, DIN 34CrNiMo6V, DIN 35CrNiMo6, AFNOR 35NCD6, AFNOR 34CrNiMo8, BS 817M40, BS 816M40, BS EN24, UNI 35NiCrMo6(KB), SS 2541, UNE F.127, JIS SNCM447, JIS SNCM431, EN 34CrNiMo6, EN 34CrNiMo6V, EN 1.6582, GOST 38Ch2N2MA, ASTM 4337, IS 40Ni2Cr1Mo28, DIN 1.6565, DIN 40NiCrMo6, AISI 4340H, AISI E4340H, SAE 4340H, SAE E4340H, JIS SNB24, JIS SNCM439, JIS SNB24-1, JIS SNB24-2, JIS SNB24-3, JIS SNB24-4, JIS SNB24-5, EN 1.6565, ISO G35CrNiMo6-6, GOST 40Ch2N2MA, GB/T 40CrNiMoA, GB/T A50403, ASTM 4340H, UNS H43400, UNS H43406
AISI 4340 Normalized general
| Property |
Temperature |
Value |
| Density |
23.0 °C |
Density of 7.8 g/cm³ |
AISI 4340 Normalized thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.2E-5 1/K |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Nickel Chromium Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 450 J/(kg·K) |
- |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 34 - 54 W/(m·K) |
Typical for Nickel Chromium Molybdenum Steel |
AISI 4340 Normalized chemical
| Property |
Value |
| Carbon |
Carbon of 0.38 - 0.43 % |
| Chromium |
Chromium of 0.7 - 0.9 % |
| Iron |
Iron of 95.1 - 96.3 % |
| Manganese |
Manganese of 0.6 - 0.8 % |
| Molybdenum |
Molybdenum of 0.2 - 0.3 % |
| Nickel |
Nickel of 1.7 - 2 % |
| Phosphorus |
Phosphorus of 0 - 0.04 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0 - 0.04 % |
AISI 4340 Normalized mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 210 GPa |
- |
| Elongation |
23.0 °C |
Elongation of 12 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Nickel Chromium Molybdenum Steel |
| Tensile strength |
23.0 °C |
Tensile strength of 1280 MPa |
- |
| Yield strength |
23.0 °C |
Yield strength of 860 MPa |
- |
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