ASTM A268/ASME SA268 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
Chemical Composition of ASTM A268 UNS S44660 Stainless Steel Pipes
| C % | Mn % | P % | S % | Si % | Cr % | Ni % | Mo % | N % | Ti+Nb % |
| 0.03 max | 1.00 max | 0.040 max | 0.030 max | 1.00 max | 25.0-28.0 | 1.00-3.50 | 3.00-4.00 | 0.04 | 0.20-1.00, & 6(C+N) min |
Mechanical Properties of ASTM A268 UNS S44660 Stainless Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 585 min | 450 min | 20 min | 265 max |