ASTM A268/ASME SA268 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
Chemical Composition of ASTM A268 TP446-1/TP446-2 Stainless Steel Pipes
| C % | Mn % | P % | S % | Si % | Cr % | Ni % | N % | |
| 0.20 max | 1.50 max | 0.040 max | 0.030 max | 1.00 max | 23.0-27.0 | 0.75 max | 0.25 | 1 |
| 0.12 max | 1.50 max | 0.040 max | 0.030 max | 1.00 max | 23.0-27.0 | 0.50 max | 0.25 | 2 |
Mechanical Properties of ASTM A268 TP446-1/TP446-2 Stainless Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Hardness, HB | |
| 415 min | 275 min | 20 min | 217 max | 1 |
| 450 min | 275 min | 20 min | 207 max | 2 |