USA AMS SA-240/SA-240M, SA-240 S32550 Specialsteel Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | SA-240 S32550 | Duplex steel | AMS | USA | Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications | 
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.04 | ≤1.50 | ≤1.00 | ≤0.04 | ≤0.03 | 24.00 -27.00 | 4.50 -6.50 | 2.90 -3.90 | 1.50 -2.50 | 0.10 -0.25 | 
| 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) | 
|---|---|---|---|---|---|---|
| 155 (≥) | 173 (≥) | 11 | 11 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 344 | 
| 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 | - | - | 0.43 | - | |||
| 438 | 382 | - | 12.3 | 313 | - | ||
| 622 | - | 31 | 23.2 | 144 | 431 | 
Heat treated : 1189°C - 1384°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 1.2550 | |||
| 1.2552 | |||
| 1.3255 | |||
| StE 255 | |||
| S255N | |||
| WStE 255 | |||
| S255NH | |||
| TStE 255 | |||
| S255NL | |||
| EStE 255 | |||
| S255NL1 | |||
| E255 | |||
| 255 | |||
| S32550 | |||
| Ferralium alloy 255 | |||
| Ferralium alloy 255/SD40 | |||
| Ferralium alloy 255/SD50 | |||
| Ferralium alloy 255-3 SC | |||
| Ferralium alloy 255-3 SF | |||
| SM 2550 | 
| SA-240/SA-240M | Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications | SA-240-SA-240M.pdf | 
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