USA SAE A 249/A 249M (2010), A 249 S32654 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 S32654 | Austenite | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | 
| C | Mn | Si | P | S | Cr | Ni | Cu | N | 
|---|---|---|---|---|---|---|---|---|
| ≤0.02 | 2.00 -4.00 | ≤0.50 | ≤0.03 | ≤0.005 | 24.00 -25.00 | 7.00 -8.00 | 0.30 -0.60 | 0.45 -0.55 | 
| 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) | 
|---|---|---|---|---|---|---|
| 956 (≥) | 817 (≥) | 23 | 14 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 124 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.14 | - | |||
| 372 | 697 | - | 41.3 | 224 | - | ||
| 917 | - | 31 | 21.2 | 441 | 322 | 
Heat treated : 1892°C - 1221°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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