JIS G4805 100CrMnMoSi8-4-6 Introduce
JIS G4805 100CrMnMoSi8-4-6 is a type of Japanese Industrial Standard (JIS) steel which is most commonly used in the manufacture of automotive components and parts. JIS G4805 100CrMnMoSi8-4-6 steels possess excellent hardenability. Hardenability is the ability of a metal to be hardened by heat treatment. The higher the steel's hardenability, the greater its ability to withstand heavy loads and wear properties. JIS G4805 100CrMnMoSi8-4-6 steels are known for their superior wear resistance, which is important for automotive components that move at high velocities. JIS G4805 100CrMnMoSi8-4-6 steels have excellent tensile strength properties. Tensile strength determines the resistance of a material to stretching, tension, and external pressure. It is one of the most important mechanical properties of JIS G4805 100CrMnMoSi8-4-6 steel, and is largely responsible for its superior wear resistance.
Smelting temperature:1429°C - 1454°C
Application:High carbon chromium bearing steel
JIS G4805 100CrMnMoSi8-4-6 Material Mechanical Properties
The mechanical properties of the JIS G4805 100CrMnMoSi8-4-6 steel are as follows:
| YieldRp0.2 | ≤ 234 (MPa) |
| TeileRm | ≤ 856 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 124 |
JIS G4805 100CrMnMoSi8-4-6 Material Thermal Properties
The thermal performance parameters of the JIS G4805 100CrMnMoSi8-4-6 steel are as follows:
| Temperature (°C) | 11 | 688 | 286 |
| Modulus of elasticity (GPa) | - | 921 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 123 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 112 |