ASTM A213/ASME SA213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
| Specification | ASTM A213/ASME SA213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| Standard | ASTM A213, ASME SA213 |
| Equivalents | EN 10216-2, ASTM A335, GOST 550-75 |
| Materials | T91, K90901 |
Chemistry Composition of ASTM A213/ASME SA213 T91, K90901
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % | V, % | N, % | Ni, % | Al, % | Nb, % |
| 0.08-0.12 | 0.3-0.6 | 0.02 max | 0.01 max | 0.2-0.5 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.03-0.07 | 0.4 max | 0.04 max | 0.06-0.10 |
Mechanical Properties of ASTM A213/ASME SA213 T91, K90901
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 585 min | 415 min | 20 min | 250 max |