ASTM A213/A213M Type 347H Introduce
ASTM A213/A213M Type 347H steel is a ferritic and austenitic stainless steel that is widely used in many industrial applications including power generation, chemical, desalination and petrochemical plants. ASTM A213/A213M Type 347H steel is characterised by high strength, excellent corrosion resistance and watertight weldability.
Smelting temperature:1828°C - 1966°C
Application:Seamless ferritic and austenitic alloy steel boilers, superheaters and heat exchanger tubes
ASTM A213/A213M Type 347H Material Chemical Composition
The chemical composition of the ASTM A213/A213M Type 347H steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | 9.0000 | 13.0000 |
| Chromium (Cr) | 17.0000 | 20.0000 |
| PhOsphorus (P) | - | 0.0400 |
| Sulfur (S) | - | 0.0300 |
| Manganese (Mn) | - | 2.0000 |
| Silicon (Si) | - | 0.7500 |
| Carbon (C) | 0.0400 | 0.1000 |
| Silicon (Si) | - | 1.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Niobium (Nb) | - | 1.1000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
ASTM A213/A213M Type 347H Material Mechanical Properties
The mechanical properties of the ASTM A213/A213M Type 347H steel are as follows:
| YieldRp0.2 | ≤ 673 (MPa) |
| TeileRm | ≤ 313 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 243 |
ASTM A213/A213M Type 347H Material Thermal Properties
The thermal performance parameters of the ASTM A213/A213M Type 347H steel are as follows:
| Temperature (°C) | 43 | 251 | 844 |
| Modulus of elasticity (GPa) | - | 169 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 142 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 443 |
| Poisson’s coefficient, ν | - | - | 112 |