ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
| Specification | ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| Standard | ASTM A789, ASME SA789 |
| Equivalents | DIN 17458, GOST 9941-81, GOST 9940-81, EN 10216-5, ASTM A790, ASME SA790, DIN 17456 |
| Materials | S31803 |
Chemistry Composition of ASTM A789, ASME SA789 S31803
| C, % | Si, % | Mn, % | P, % | S, % | Cr, % | Ni, % | Mo | N, % |
| 0.03 max | 1.0 max | 2.0 max | 0.03 max | 0.02 max | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
Mechanical Properties of ASTM A789, ASME SA789 S31803
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 620 min | 450 min | 25 min | 290 max |