JIS G4805 100CrMo7-4 Introduce
JIS G4805 100CrMo7-4 is one of the most commonly used steels in the world. It is widely used in a variety of applications ranging from consumer goods to large-scale construction projects. This steel is known for its exceptional strength, durability, and chemical properties. JIS G4805 100CrMo7-4 steel is an iron-based alloy containing a variety of alloying elements, including chromium, nickel, molybdenum and vanadium.
Smelting temperature:1632°C - 1649°C
Application:High carbon chromium bearing steel
JIS G4805 100CrMo7-4 Material Chemical Composition
The chemical composition of the JIS G4805 100CrMo7-4 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.3500 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Oxygen (O) | - | 0.0015 |
| Molybdenum (Mo) | 0.4000 | 0.5000 |
| Manganese (Mn) | 0.6000 | 0.8000 |
| Chromium (Cr) | 1.6500 | 1.9500 |
| Carbon (C) | 0.9300 | 1.0500 |
JIS G4805 100CrMo7-4 Material Mechanical Properties
The mechanical properties of the JIS G4805 100CrMo7-4 steel are as follows:
| YieldRp0.2 | ≤ 236 (MPa) |
| TeileRm | ≤ 183 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 243 |
JIS G4805 100CrMo7-4 Material Thermal Properties
The thermal performance parameters of the JIS G4805 100CrMo7-4 steel are as follows:
| Temperature (°C) | 43 | 875 | 565 |
| Modulus of elasticity (GPa) | - | 466 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 422 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 221 |
| Poisson’s coefficient, ν | - | - | 241 |