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) |
|---|---|---|---|---|---|---|
| 233 (≥) | 932 (≥) | 43 | 11 | 14 | 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 |
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.12 | - | |||
| 199 | 122 | - | 34.3 | 132 | - | ||
| 625 | - | 14 | 21.2 | 142 | 243 |
Heat treated : 1632°C - 1121°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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