JIS G7701 7CrMoNi2 Introduce
JIS G7701 7CrMoNi2 is a type of steel that has been developed for use in many industries. This type of steel is known for its high strength, excellent structural stability, corrosion resistance and toughness. It is produced using a combination of metallurgy and heat treatment processes. The result is a steel that is highly sought after for a variety of different applications.
Smelting temperature:1995°C - 1167°C
Application:Tool steel
JIS G7701 7CrMoNi2 Material Chemical Composition
The chemical composition of the JIS G7701 7CrMoNi2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1000 | 0.4000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | 0.4000 | 0.6000 |
| Molybdenum (Mo) | 0.1000 | 0.3000 |
| Manganese (Mn) | 0.2000 | 0.5000 |
| Chromium (Cr) | 1.8000 | 2.1000 |
| Carbon (C) | - | 0.1000 |
JIS G7701 7CrMoNi2 Material Mechanical Properties
The mechanical properties of the JIS G7701 7CrMoNi2 steel are as follows:
| YieldRp0.2 | ≤ 824 (MPa) |
| TeileRm | ≤ 197 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 233 |
JIS G7701 7CrMoNi2 Material Thermal Properties
The thermal performance parameters of the JIS G7701 7CrMoNi2 steel are as follows:
| Temperature (°C) | 41 | 326 | 284 |
| Modulus of elasticity (GPa) | - | 897 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 11 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 224 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 424 |
| Poisson’s coefficient, ν | - | - | 234 |