SAE J404 Grade E4340
Equivalent material: DIN 1.7707, DIN 30CrMoV9, AFNOR 30CrMoV9, BS 30CrMoV9, AISI E4340, EN 30CrMoV9, EN 1.7707, GOST 30Ch3MF, UNS G43406, DIN 1.6562, DIN 40NiCrMo8-4, DIN 40 NiCrMo 8 4, BS 4333M4, AISI E4340H, AISI 4337, SAE E4340H, SAE 4337, JIS SNB23-1, JIS SNB23-2, JIS SNB23-3, JIS SNB23-4, JIS SNB23-5, EN 40NiCrMo8-4, EN 1.6562, ASTM E4340
SAE J404 Grade E4340 general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Chromium Molybdenum Steel |
SAE J404 Grade E4340 thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.4E-5 1/K |
Typical for Chromium Molybdenum Steel |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 448 - 502 J/(kg·K) |
Typical for Chromium Molybdenum Steel |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 36 - 43 W/(m·K) |
Typical for Chromium Molybdenum Steel |
SAE J404 Grade E4340 electrical
| Property |
Value |
| Carbon |
Carbon of 0.38 - 0.43 % |
| Chromium |
Chromium of 0.7 - 0.9 % |
| Manganese |
Manganese of 0.65 - 0.85 % |
| 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 0.025 % |
SAE J404 Grade E4340 mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Chromium Molybdenum Steel |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Chromium Molybdenum Steel |
