USA SAE A 988/A 988M (2011), A 988 S31803 Specialsteel Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | A 988 S31803 | Duplex steel | SAE | USA | Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service | 
| C | Mn | Si | P | S | Cr | Ni | Mo | N | 
|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤2.00 | ≤1.00 | ≤0.03 | ≤0.02 | 21.00 -23.00 | 4.50 -6.50 | 2.50 -3.50 | 0.08 -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) | 
|---|---|---|---|---|---|---|
| 725 (≥) | 292 (≥) | 11 | 43 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 | 
| 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 | - | - | 0.44 | - | |||
| 539 | 695 | - | 14.3 | 242 | - | ||
| 367 | - | 32 | 13.2 | 412 | 234 | 
Heat treated : 1723°C - 1319°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 2205 | |||
| S32205 | |||
| 2205(C) | |||
| S32205 | |||
| 2205 | |||
| 2205(S31803) | |||
| 2205 | |||
| S31803 | |||
| S31803 | |||
| S31803 | 
| A 988/A 988M (2011) | Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service | A-988-A-988M-(2011).pdf | 
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