USA SAE A 249/A 249M (2010), A 249 S31726 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 S31726 | Austenite | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.03 | 17.00 -20.00 | 13.50 -17.50 | 4.00 -5.00 | ≤0.75 | 0.10 -0.20 |
| 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) |
|---|---|---|---|---|---|---|
| 734 (≥) | 457 (≥) | 41 | 22 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 432 |
| 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 |
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.34 | - | |||
| 295 | 768 | - | 23.3 | 211 | - | ||
| 988 | - | 23 | 32.2 | 144 | 422 |
Heat treated : 1516°C - 1294°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| S31726 | |||
| S31726 | |||
| S31726 | |||
| S31726 | |||
| S31726 | |||
| S31726 | |||
| S31726 | |||
| 17-14-4LN(S31726) |
| 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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