USA AISI S32550 Specialsteel Duplex (Austenitic-Ferritic) Chromium Nickel Molybdenum Copper Nitrogen Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | S32550 | Duplex steel | AISI | USA | Duplex (Austenitic-Ferritic) Chromium Nickel Molybdenum Copper Nitrogen Stainless Steel | 
| 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) | 
|---|---|---|---|---|---|---|
| 123 (≥) | 219 (≥) | 44 | 11 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.43 | - | |||
| 381 | 675 | - | 42.3 | 343 | - | ||
| 149 | - | 33 | 24.2 | 134 | 121 | 
Heat treated : 1933°C - 1338°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 | 
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