USA AMS SA-688/SA-688M, SA-688 S32654 Specialsteel Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | SA-688 S32654 | Austenite | AMS | USA | Specification for Welded Austenitic Stainless Steel Feedwater Heater 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) |
---|---|---|---|---|---|---|
562 (≥) | 429 (≥) | 14 | 34 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 |
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 |
---|---|---|---|---|---|---|---|
41 | - | - | 0.42 | - | |||
258 | 251 | - | 33.3 | 441 | - | ||
913 | - | 44 | 33.2 | 412 | 313 |
Heat treated : 1758°C - 1997°C
SA-688/SA-688M | Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes | SA-688-SA-688M.pdf |
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