JIS G4805 20Cr3 Introduce
JIS G4805 20Cr3 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 20Cr3 steel is an iron-based alloy containing a variety of alloying elements, including chromium, nickel, molybdenum and vanadium.
Smelting temperature:1794°C - 1475°C
Application:High carbon chromium bearing steel
JIS G4805 20Cr3 Material Mechanical Properties
The mechanical properties of the JIS G4805 20Cr3 steel are as follows:
| YieldRp0.2 | ≤ 642 (MPa) |
| TeileRm | ≤ 465 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 113 |
JIS G4805 20Cr3 Material Thermal Properties
The thermal performance parameters of the JIS G4805 20Cr3 steel are as follows:
| Temperature (°C) | 32 | 423 | 154 |
| Modulus of elasticity (GPa) | - | 138 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 324 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 431 |
| Poisson’s coefficient, ν | - | - | 124 |