ASTM A508/A508M Grade 3 Class 2 Introduce
ASTM A508/A508M Grade 3 Class 2 is a high-quality alloy steel with unique chemical properties that make it ideal for a variety of applications, such as pressure vessels, construction, bridges, and storage tanks. It has excellent weldability, ductility, machinability, heat treatability, corrosion resistance, and impact resistance. ASTM A508/A508M Grade 3 Class 2 can be easily welded with any type of welding method and is easy to heat treat for any specific mechanical requirements.
Smelting temperature:1631°C - 1646°C
Application:Carbon steel and alloy steel forgings for quenching and tempering vacuum treatment of pressure vessels
ASTM A508/A508M Grade 3 Class 2 Material Mechanical Properties
The mechanical properties of the ASTM A508/A508M Grade 3 Class 2 steel are as follows:
| YieldRp0.2 | ≤ 119 (MPa) |
| TeileRm | ≤ 269 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 314 |
ASTM A508/A508M Grade 3 Class 2 Material Thermal Properties
The thermal performance parameters of the ASTM A508/A508M Grade 3 Class 2 steel are as follows:
| Temperature (°C) | 12 | 377 | 218 |
| Modulus of elasticity (GPa) | - | 149 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 321 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 223 |
| Poisson’s coefficient, ν | - | - | 214 |