ASTM A1031/A1031M Grade 8660 Introduce
The chemical composition of ASTM A1031/A1031M Grade 8660 affects its mechanical properties in a variety of ways. Carbon, manganese, and chromium all have a major influence on the strength and hardness characteristics of the alloy, while phosphorus and sulfur can affect its formability and weldability. As a result, it is important to use the correct chemical composition in order to achieve the desired mechanical properties for a particular application.
Smelting temperature:1942°C - 1254°C
Application:Hot rolled heavy-duty tin coil drawing and structural alloy steel sheet and strip specifications
ASTM A1031/A1031M Grade 8660 Material Chemical Composition
The chemical composition of the ASTM A1031/A1031M Grade 8660 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.3000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 0.4000 | 0.7000 |
| Molybdenum (Mo) | 0.2000 | 0.3000 |
| Manganese (Mn) | 0.7000 | 0.9000 |
| Chromium (Cr) | 0.4000 | 0.6000 |
| Carbon (C) | 0.1800 | 0.2300 |
ASTM A1031/A1031M Grade 8660 Material Mechanical Properties
The mechanical properties of the ASTM A1031/A1031M Grade 8660 steel are as follows:
| YieldRp0.2 | ≤ 161 (MPa) |
| TeileRm | ≤ 549 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 212 |
ASTM A1031/A1031M Grade 8660 Material Thermal Properties
The thermal performance parameters of the ASTM A1031/A1031M Grade 8660 steel are as follows:
| Temperature (°C) | 41 | 977 | 699 |
| Modulus of elasticity (GPa) | - | 637 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 34 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 331 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 222 |
| Poisson’s coefficient, ν | - | - | 131 |