JIS G4805 100CrMnSi6-4 Introduce
JIS G4805 100CrMnSi6-4 steel is a type of Japanese Industrial Standard (JIS) steel with excellent mechanical properties. Its yield strength, and ductility make it an ideal material for use in the manufacture of automotive components and parts. Yield strength is the point at which a material stops deforming and starts to show permanent deformation. JIS G4805 100CrMnSi6-4 steels have excellent yield strength properties and are able to resist permanent deformation under heavy loading. Ductility is the property of a material that determines its ability to be stretched or bent without breaking. JIS G4805 100CrMnSi6-4 steels possess excellent ductility and are able to withstand considerable deformation without breaking. This makes them ideal for application in heavy-load bearing automotive components and parts.
Smelting temperature:1677°C - 1492°C
Application:High carbon chromium bearing steel
JIS G4805 100CrMnSi6-4 Material Chemical Composition
The chemical composition of the JIS G4805 100CrMnSi6-4 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.4500 | 0.7500 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | 1.0000 | 1.2000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | 1.4000 | 1.6500 |
| Carbon (C) | 0.9300 | 1.0500 |
JIS G4805 100CrMnSi6-4 Material Mechanical Properties
The mechanical properties of the JIS G4805 100CrMnSi6-4 steel are as follows:
| YieldRp0.2 | ≤ 149 (MPa) |
| TeileRm | ≤ 169 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 44% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 141 |
JIS G4805 100CrMnSi6-4 Material Thermal Properties
The thermal performance parameters of the JIS G4805 100CrMnSi6-4 steel are as follows:
| Temperature (°C) | 33 | 375 | 648 |
| Modulus of elasticity (GPa) | - | 784 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 144 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 331 |
| Poisson’s coefficient, ν | - | - | 343 |