SAE J775 Grade NV-7
Equivalent material: DIN 1.7225, DIN 42CrMo4, AFNOR 42CD4, BS 708M40, BS 709M40, BS EN19, UNI 42CrMo4, SS 2244, UNE 42CrMo4, UNE F.125, AISI 4140, AISI 4140H, AISI 4142H, AISI 4142, AISI 4145, AISI NV-7, SAE 4140, SAE 4140H, SAE 4142H, SAE 4142, SAE 4145, SAE NV-7, JIS SCM440, JIS SCM440M, JIS SCM440H, JIS SNB7, EN 42CrMo4, EN 1.7225, GOST 38ChM, GB/T 42CrMo, GB/T A30425, ASTM 4140H, ASTM 4142H, ASTM 4145, ASTM Grade B7, ASTM Grade B7M, ASTM Grade 12, ASTM Grade 7M, UNS G41400, UNS H41400, UNS H41420, UNS G41420, UNS G41450, IS 40Cr1Mo28
SAE J775 Grade NV-7 general
| Property |
Temperature |
Value |
Comment |
| Density |
20.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Chromium Molybdenum Steel |
SAE J775 Grade NV-7 thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
20.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.4E-5 1/K |
Typical for Chromium Molybdenum Steel |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.1E-5 1/K |
Typical for Chromium Molybdenum Steel |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.17E-5 1/K |
Typical for Chromium Molybdenum Steel |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.23E-5 1/K |
Typical for Chromium Molybdenum Steel |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.26E-5 1/K |
Typical for Chromium Molybdenum Steel |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum Steel |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 448 - 502 J/(kg·K) |
Typical for Chromium Molybdenum Steel |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 36 - 43 W/(m·K) |
Typical for Chromium Molybdenum Steel |
SAE J775 Grade NV-7 chemical
| Property |
Value |
| Carbon |
Carbon of 0.37 - 0.44 % |
| Chromium |
Chromium of 0.75 - 1.2 % |
| Iron |
Balance |
| Manganese |
Manganese of 0.75 - 1.1 % |
| Molybdenum |
Molybdenum of 0.15 - 0.25 % |
| Phosphorus |
Phosphorus of 0.35 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
SAE J775 Grade NV-7 mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Chromium Molybdenum Steel |
| Elongation A5 |
20.0 °C |
Elongation A5 of 18 % |
- |
| Hardness, Rockwell C |
20.0 °C |
Hardness, Rockwell C of 35 [-] |
- |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Chromium Molybdenum Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 58 % |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 1100 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 1000 MPa |
- |
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