JIS G7105 C25 Introduce
JIS G7105 C25 is a Japanese industrial standard steel with excellent thermal properties. It has a low coefficient of thermal expansion, low heat capacity, low thermal conductivity, and a high melting point. The thermal performance of JIS G7105 C25 can be affected by its chemical composition and microstructure, making it important to choose the right steel for the intended application. With its excellent thermal properties, It is a popular choice for engineering and production applications that require high temperature performance.
Smelting temperature:1364°C - 1994°C
Application:Heat-treated steel, alloy steel, free-cutting steel - Part 18: Bright alloy steel and low alloy steel
JIS G7105 C25 Material Chemical Composition
The chemical composition of the JIS G7105 C25 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1000 | 0.4000 |
| Sulfur (S) | - | 0.0450 |
| PhOsphorus (P) | - | 0.0450 |
| Manganese (Mn) | 0.4000 | 0.7000 |
| Carbon (C) | 0.2200 | 0.2900 |
JIS G7105 C25 Material Mechanical Properties
The mechanical properties of the JIS G7105 C25 steel are as follows:
| YieldRp0.2 | ≤ 162 (MPa) |
| TeileRm | ≤ 115 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 443 |
JIS G7105 C25 Material Thermal Properties
The thermal performance parameters of the JIS G7105 C25 steel are as follows:
| Temperature (°C) | 32 | 672 | 131 |
| Modulus of elasticity (GPa) | - | 225 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 433 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 413 |
| Poisson’s coefficient, ν | - | - | 313 |