USA SAE A 249/A 249M (2010) , A 249 S31254 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 S31254 | Austenite | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
---|---|---|---|---|---|---|---|---|---|
≤0.020 | ≤0.80 | ≤1.00 | ≤0.03 | ≤0.01 | 19.5 -20.5 | 17.5 -18.5 | 6.00 -6.50 | 0.50 -1.00 | 0.18 -0.22 |
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) |
---|---|---|---|---|---|---|
469 (≥) | 447 (≥) | 44 | 32 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 |
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 |
---|---|---|---|---|---|---|---|
12 | - | - | 0.22 | - | |||
636 | 855 | - | 12.3 | 433 | - | ||
943 | - | 13 | 24.2 | 222 | 333 |
Heat treated : 1586°C - 1913°C
Grade | Standard | Country | Application |
---|---|---|---|
S31254 | |||
S31254 | |||
S31254 | |||
S31254 | |||
S31254 | |||
S31254 | |||
S31254 | |||
S31254 | |||
254SMO(S31254) |
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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