JIS G7401 42CrMo4E Introduce
JIS G7401 42CrMo4E steel is an attractive and highly desirable material due to its superior mechanical properties. Its machinability is good, and it is capable of being both cold worked and heat treated to obtain desired characteristics. To ensure optimal performance when machining JIS G7401 42CrMo4E steel, a carefully selected process, appropriate cutting materials and efficient cooling and lubrication systems should be employed. When implemented properly, JIS G7401 42CrMo4E steel can be machined to excellent results.
Smelting temperature:1229°C - 1783°C
Application:Cold heading and cold extrusion steel
JIS G7401 42CrMo4E Material Mechanical Properties
The mechanical properties of the JIS G7401 42CrMo4E steel are as follows:
| YieldRp0.2 | ≤ 165 (MPa) |
| TeileRm | ≤ 745 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 132 |
JIS G7401 42CrMo4E Material Thermal Properties
The thermal performance parameters of the JIS G7401 42CrMo4E steel are as follows:
| Temperature (°C) | 44 | 694 | 135 |
| Modulus of elasticity (GPa) | - | 449 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 422 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 343 |
| Poisson’s coefficient, ν | - | - | 223 |