USA SAE A 268/A 268M (2010), A 268 S40800 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 S40800 | Ferrite | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
C | Mn | Si | P | S | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|
≤0.08 | ≤1.00 | ≤1.00 | ≤0.045 | ≤0.045 | 11.50 -13.00 | ≤0.08 | ≤ ≥ |
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) |
---|---|---|---|---|---|---|
945 (≥) | 757 (≥) | 21 | 22 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 |
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 |
---|---|---|---|---|---|---|---|
24 | - | - | 0.24 | - | |||
874 | 196 | - | 23.3 | 314 | - | ||
271 | - | 43 | 12.2 | 111 | 313 |
Heat treated : 1556°C - 1819°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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