ASTM A479/A479M S39277 Introduce
{stadard} is a standard specification for stainless steel bars and shapes used in the manufacturing of boilers. The ASTM A479/A479M S39277 boiler steel is a type of high-strength, corrosion-resistant steel that is designed to withstand high temperatures and pressures while retaining its structural integrity.
Smelting temperature:1636°C - 1391°C
Application:Stainless steel and heat-resistant steel bars and profiles for boilers and pressure vessels
ASTM A479/A479M S39277 Material Chemical Composition
The chemical composition of the ASTM A479/A479M S39277 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Tungsten (W) | 0.8000 | 1.2000 |
| Silicon (Si) | - | 0.8000 |
| Sulfur (S) | - | 0.0020 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 6.5000 | 8.0000 |
| Nitrogen (N) | 0.2300 | 0.3300 |
| Molybdenum (Mo) | 3.0000 | 4.0000 |
| Manganese (Mn) | - | 0.8000 |
| Copper (Cu) | 1.2000 | 2.0000 |
| Chromium (Cr) | 24.0000 | 26.0000 |
| Carbon (C) | - | 0.0250 |
ASTM A479/A479M S39277 Material Mechanical Properties
The mechanical properties of the ASTM A479/A479M S39277 steel are as follows:
| YieldRp0.2 | ≤ 375 (MPa) |
| TeileRm | ≤ 141 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 44% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 141 |
ASTM A479/A479M S39277 Material Thermal Properties
The thermal performance parameters of the ASTM A479/A479M S39277 steel are as follows:
| Temperature (°C) | 31 | 961 | 972 |
| Modulus of elasticity (GPa) | - | 598 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 224 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 141 |
| Poisson’s coefficient, ν | - | - | 241 |