ASTM A213/A213M 18Cr-2Mo Introduce
ASTM A213/A213M 18Cr-2Mo steel is a ferritic and austenitic stainless steel alloy that is produced and regulated to meet ASTM A213/A213M standard specification for seamless ferritic and austenitic stainless steel tubes for boilers, superheaters, and heat exchangers. This steel offers a combination of corrosion resistance, toughness and strength, making it well-suited for a wide range of industrial applications.
Smelting temperature:1231°C - 1512°C
Application:Seamless ferritic and austenitic alloy steel boilers, superheaters and heat exchanger tubes
ASTM A213/A213M 18Cr-2Mo Material Chemical Composition
The chemical composition of the ASTM A213/A213M 18Cr-2Mo steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | - | 0.0350 |
| Molybdenum (Mo) | 1.7500 | 2.5000 |
| Chromium (Cr) | 17.5000 | 19.5000 |
| PhOsphorus (P) | - | 0.0400 |
| Sulfur (S) | - | 0.0300 |
| Manganese (Mn) | - | 1.0000 |
| Silicon (Si) | - | 1.0000 |
| Carbon (C) | - | 0.0250 |
ASTM A213/A213M 18Cr-2Mo Material Mechanical Properties
The mechanical properties of the ASTM A213/A213M 18Cr-2Mo steel are as follows:
| YieldRp0.2 | ≤ 389 (MPa) |
| TeileRm | ≤ 933 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 311 |
ASTM A213/A213M 18Cr-2Mo Material Thermal Properties
The thermal performance parameters of the ASTM A213/A213M 18Cr-2Mo steel are as follows:
| Temperature (°C) | 24 | 968 | 969 |
| Modulus of elasticity (GPa) | - | 973 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 332 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 141 |
| Poisson’s coefficient, ν | - | - | 123 |