ASTM A829/A829M 4118 Introduce
ASTM A829/A829M 4118 is a specialized grade of alloy steel designed for high-strength applications. It contains a variety of alloying elements including chromium, molybdenum, and nickel, which give it a combination of strength, toughness, and corrosion resistance. It is often used in automotive and aircraft components as well as for forging and machining operations.
Smelting temperature:1271°C - 1842°C
Application:Structural alloy steel plate
ASTM A829/A829M 4118 Material Mechanical Properties
The mechanical properties of the ASTM A829/A829M 4118 steel are as follows:
| YieldRp0.2 | ≤ 243 (MPa) |
| TeileRm | ≤ 368 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 211 |
ASTM A829/A829M 4118 Material Thermal Properties
The thermal performance parameters of the ASTM A829/A829M 4118 steel are as follows:
| Temperature (°C) | 13 | 332 | 895 |
| Modulus of elasticity (GPa) | - | 811 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 221 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 312 |
| Poisson’s coefficient, ν | - | - | 413 |