USA SAE A 249/A 249M (2010), A 249 S30815 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 S30815 | Austenite | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | 
| C | Si | Mn | P | S | Cr | Ni | N | Ce | 
|---|---|---|---|---|---|---|---|---|
| 0.05 -0.10 | 1.40 -2.00 | ≤0.80 | ≤0.04 | ≤0.03 | 20.0 -22.0 | 10.00 -12.0 | 0.14 -0.20 | 0.03 -0.08 | 
| 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) | 
|---|---|---|---|---|---|---|
| 295 (≥) | 966 (≥) | 34 | 14 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 312 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.11 | - | |||
| 286 | 297 | - | 22.3 | 412 | - | ||
| 424 | - | 33 | 23.2 | 242 | 233 | 
Heat treated : 1283°C - 1484°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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