ASTM A479/A479M 444 Introduce
ASTM A479/A479M 444 pressure vessel steel is a highly reliable and durable material used in demanding industrial applications. Its combination of strength, corrosion resistance, and quality control make it an excellent choice for manufacturing pressure vessels that can withstand high-pressure environments.
Smelting temperature:1617°C - 1226°C
Application:Stainless steel and heat-resistant steel bars and profiles for boilers and pressure vessels
ASTM A479/A479M 444 Material Mechanical Properties
The mechanical properties of the ASTM A479/A479M 444 steel are as follows:
| YieldRp0.2 | ≤ 147 (MPa) |
| TeileRm | ≤ 148 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 114 |
ASTM A479/A479M 444 Material Thermal Properties
The thermal performance parameters of the ASTM A479/A479M 444 steel are as follows:
| Temperature (°C) | 31 | 262 | 752 |
| Modulus of elasticity (GPa) | - | 533 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 132 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 344 |
| Poisson’s coefficient, ν | - | - | 234 |