USA AMS SA-249/SA-249M, SA-249 S31726 Specialsteel Specification for 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 | SA-249 S31726 | Austenite | AMS | USA | Specification for 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) |
---|---|---|---|---|---|---|
838 (≥) | 873 (≥) | 41 | 43 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
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 |
---|---|---|---|---|---|---|---|
23 | - | - | 0.12 | - | |||
457 | 385 | - | 33.3 | 331 | - | ||
239 | - | 44 | 13.2 | 321 | 442 |
Heat treated : 1894°C - 1464°C
Grade | Standard | Country | Application |
---|---|---|---|
S31726 | |||
S31726 | |||
S31726 | |||
S31726 | |||
S31726 | |||
S31726 | |||
S31726 | |||
17-14-4LN(S31726) |
SA-249/SA-249M | Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | SA-249-SA-249M.pdf |
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