USA SAE A 268/A 268M (2010), A 268 S44627 Specialsteel Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | A 268 S44627 | Ferrite | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
C | Mn | Si | P | S | Cr | Ni | Mo | N | Cu | Nb |
---|---|---|---|---|---|---|---|---|---|---|
≤0.01 | ≤0.40 | ≤0.40 | ≤0.02 | ≤0.02 | 25.00 -27.00 | ≤0.50 | 0.75 -1.50 | ≤0.015 | ≤0.020 | 0.05 -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) |
---|---|---|---|---|---|---|
539 (≥) | 459 (≥) | 13 | 23 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 433 |
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 |
---|---|---|---|---|---|---|---|
21 | - | - | 0.41 | - | |||
474 | 391 | - | 13.3 | 422 | - | ||
739 | - | 12 | 44.2 | 243 | 332 |
Heat treated : 1571°C - 1758°C
A 268/A 268M (2010) | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service | A-268-A-268M-(2010).pdf |
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