JIS G7701 40CrMoV5 Introduce
Steel is an indispensable part of modern life and its uses are almost limitless. It serves many purposes in a wide variety of industries, including manufacturing, construction, energy, transportation, and biomedical. As a result, it is essential that steel makers produce steels of consistent, reliable quality. One of the most popular and widely-used steels is JIS G7701 40CrMoV5.
Smelting temperature:1159°C - 1169°C
Application:Tool steel
JIS G7701 40CrMoV5 Material Chemical Composition
The chemical composition of the JIS G7701 40CrMoV5 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.8500 | 1.1500 |
| Silicon (Si) | 0.9000 | 1.2000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Molybdenum (Mo) | 1.2000 | 1.7000 |
| Manganese (Mn) | 0.2500 | 0.5500 |
| Chromium (Cr) | 4.5000 | 5.5000 |
| Carbon (C) | 0.3500 | 0.4500 |
JIS G7701 40CrMoV5 Material Mechanical Properties
The mechanical properties of the JIS G7701 40CrMoV5 steel are as follows:
| YieldRp0.2 | ≤ 431 (MPa) |
| TeileRm | ≤ 913 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 321 |
JIS G7701 40CrMoV5 Material Thermal Properties
The thermal performance parameters of the JIS G7701 40CrMoV5 steel are as follows:
| Temperature (°C) | 11 | 594 | 844 |
| Modulus of elasticity (GPa) | - | 356 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 434 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 244 |
| Poisson’s coefficient, ν | - | - | 312 |