JIS G4805 17MnCr5 Introduce
One of the most popular materials that is used in the machining process today is JIS G4805 17MnCr5, a type of steel that is highly desirable and has numerous benefits when used in the machining process. It has excellent wear and fatigue resistance, good strength, and great ductility.
Smelting temperature:1791°C - 1944°C
Application:High carbon chromium bearing steel
JIS G4805 17MnCr5 Material Chemical Composition
The chemical composition of the JIS G4805 17MnCr5 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Oxygen (O) | - | 0.0020 |
| Manganese (Mn) | 1.0000 | 1.3000 |
| Chromium (Cr) | 0.8000 | 1.1000 |
| Carbon (C) | 0.1400 | 0.1900 |
JIS G4805 17MnCr5 Material Mechanical Properties
The mechanical properties of the JIS G4805 17MnCr5 steel are as follows:
| YieldRp0.2 | ≤ 893 (MPa) |
| TeileRm | ≤ 426 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 421 |
JIS G4805 17MnCr5 Material Thermal Properties
The thermal performance parameters of the JIS G4805 17MnCr5 steel are as follows:
| Temperature (°C) | 22 | 266 | 952 |
| Modulus of elasticity (GPa) | - | 415 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 132 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 323 |
| Poisson’s coefficient, ν | - | - | 211 |