USA AMS SA-790/SA-790M, SA-790 S32550 Specialsteel Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | SA-790 S32550 | Duplex steel | AMS | USA | Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe |
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) |
---|---|---|---|---|---|---|
527 (≥) | 213 (≥) | 31 | 23 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 141 |
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 |
---|---|---|---|---|---|---|---|
32 | - | - | 0.43 | - | |||
967 | 976 | - | 21.3 | 323 | - | ||
958 | - | 31 | 14.2 | 233 | 431 |
Heat treated : 1352°C - 1284°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-790/SA-790M | Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe | SA-790-SA-790M.pdf |
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