ASTM A479/A479M 347 Introduce
{stadard} is a standard specification for stainless steel bars and shapes used in the manufacturing of boilers. The ASTM A479/A479M 347 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:1417°C - 1189°C
Application:Stainless steel and heat-resistant steel bars and profiles for boilers and pressure vessels
ASTM A479/A479M 347 Material Chemical Composition
The chemical composition of the ASTM A479/A479M 347 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | - | 0.0800 |
| Manganese (Mn) | - | 2.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Sulfur (S) | - | 0.0300 |
| Silicon (Si) | - | 1.0000 |
| Nickel (Ni) | 9.0000 | 12.0000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
| (Cb) | - | 1.1000 |
ASTM A479/A479M 347 Material Mechanical Properties
The mechanical properties of the ASTM A479/A479M 347 steel are as follows:
| YieldRp0.2 | ≤ 678 (MPa) |
| TeileRm | ≤ 749 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 432 |
ASTM A479/A479M 347 Material Thermal Properties
The thermal performance parameters of the ASTM A479/A479M 347 steel are as follows:
| Temperature (°C) | 44 | 955 | 667 |
| Modulus of elasticity (GPa) | - | 613 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 424 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 422 |
| Poisson’s coefficient, ν | - | - | 324 |