ASTM A304 Grade 4340H
Equivalent material: DIN 1.6565, DIN 40NiCrMo6, BS 817M40, AISI 4340H, AISI E4340H, AISI 4340, SAE 4340H, SAE E4340H, SAE 4340, 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, UNS H43400, UNS H43406, UNS G43400
ASTM A304 Grade 4340H general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Nickel Chromium Molybdenum Steel |
ASTM A304 Grade 4340H 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 |
ASTM A304 Grade 4340H electrical
| Property |
Value |
| Carbon |
Carbon of 0.37 - 0.44 % |
| Chromium |
Chromium of 0.65 - 0.95 % |
| Copper |
Copper of 0.35 % |
| Manganese |
Manganese of 0.55 - 0.9 % |
| Molybdenum |
Molybdenum of 0.2 - 0.3 % |
| Nickel |
Nickel of 1.55 - 2 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
ASTM A304 Grade 4340H 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 |
