SAE J404 Grade 8720
Equivalent material: DIN 1.6526, DIN 21NiCrMoS2, AFNOR 20NiCrMoS2-2, BS 20NiCrMoS2-2, UNI 20NiCrMoS2-2, AISI 8620H, AISI 8720, SAE 8620H, EN 21NiCrMoS2, EN 20NiCrMoS2-2, EN 1.6526, ISO 20NiCrMoS2-2, ASTM 8720, UNS H86200, UNS G87200, DIN 1.6543, DIN 21NiCrMo2-2, AISI 8622H, AISI 8720H, AISI 8822H, AISI H88220, AISI 8622, AISI 8822, SAE 8622H, SAE 8720H, SAE 8822H, SAE H88220, SAE 8622, SAE 8822, EN 1.6543, GB/T A50204, GB/T ML20CrNiMo, GB/T G20CrNiMo, GB/T A50202, ASTM 8822, ASTM 8822H, ASTM 8622, UNS H86220, UNS H87200, UNS G86220, UNS G88220
SAE J404 Grade 8720 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 8720 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 8720 electrical
| Property |
Value |
| Carbon |
Carbon of 0.18 - 0.23 % |
| Chromium |
Chromium of 0.4 - 0.6 % |
| Manganese |
Manganese of 0.7 - 0.9 % |
| Molybdenum |
Molybdenum of 0.2 - 0.3 % |
| Nickel |
Nickel of 0.4 - 0.7 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
SAE J404 Grade 8720 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 |
