USA SAE A 249/A 249M (2010), A 249 S31040 Specialsteel Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | A 249 S31040 | Austenite | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| C | Mn | Si | P | S | Cr | Ni | Mo | Nb+Ta |
|---|---|---|---|---|---|---|---|---|
| ≤0.08 | ≤2.00 | ≤1.50 | ≤0.045 | ≤0.03 | 24.00 -26.00 | 19.00 -22.00 | ≤ ≥ | 10×C% -1.10 |
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 222 (≥) | 964 (≥) | 34 | 41 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.11 | - | |||
| 725 | 725 | - | 22.3 | 432 | - | ||
| 724 | - | 43 | 11.2 | 312 | 311 |
Heat treated : 1233°C - 1582°C
| A 249/A 249M (2010) | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | A-249-A-249M-(2010).pdf |
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