ASTM A249/ASME SA249 Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Chemical Composition of ASTM A249 TP321 Stainless Steel Pipes
| C % | Si % | Mn % | P % | S % | Cr % | Ni % | Ti % |
| 0.08 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 17.0-19.0 | 9.0-12.0 | 5*(C+N)-0.7 |
Mechanical Properties of ASTM A249 TP321 Stainless Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 515 min | 205 min | 35 min | 90 max |