ASTM A213/A213M Grade T9 Introduce
ASTM A213/A213M Grade T9 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 Grade T9 steel is characterised by high strength, excellent corrosion resistance and watertight weldability.
Smelting temperature:1777°C - 1115°C
Application:Seamless ferritic and austenitic alloy steel boilers, superheaters and heat exchanger tubes
ASTM A213/A213M Grade T9 Material Chemical Composition
The chemical composition of the ASTM A213/A213M Grade T9 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.2500 | 1.0000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Molybdenum (Mo) | 0.9000 | 1.1000 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Chromium (Cr) | 8.0000 | 10.0000 |
| Carbon (C) | - | 0.1500 |
ASTM A213/A213M Grade T9 Material Mechanical Properties
The mechanical properties of the ASTM A213/A213M Grade T9 steel are as follows:
| YieldRp0.2 | ≤ 373 (MPa) |
| TeileRm | ≤ 473 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 341 |
ASTM A213/A213M Grade T9 Material Thermal Properties
The thermal performance parameters of the ASTM A213/A213M Grade T9 steel are as follows:
| Temperature (°C) | 34 | 219 | 465 |
| Modulus of elasticity (GPa) | - | 917 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 324 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 234 |
| Poisson’s coefficient, ν | - | - | 432 |