SAE J404 Grade 4340
Equivalent material: DIN 1.6563, DIN 41NiCrMo7-3-2, BS S 149, AISI 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
SAE J404 Grade 4340 general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Nickel Chromium Molybdenum Steel |
SAE J404 Grade 4340 thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1E-5 - 1.3E-5 1/K |
Typical for Nickel Chromium Molybdenum Steel |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Nickel Chromium Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 448 - 670 J/(kg·K) |
Typical for Nickel Chromium Molybdenum Steel |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 34 - 54 W/(m·K) |
Typical for Nickel Chromium Molybdenum Steel |
SAE J404 Grade 4340 electrical
| Property |
Value |
| Carbon |
Carbon of 0.38 - 0.43 % |
| Chromium |
Chromium of 0.7 - 0.9 % |
| Manganese |
Manganese of 0.6 - 0.8 % |
| Molybdenum |
Molybdenum of 0.2 - 0.3 % |
| Nickel |
Nickel of 1.65 - 2 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
SAE J404 Grade 4340 mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Nickel Chromium Molybdenum Steel |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Nickel Chromium Molybdenum Steel |
