Forged flanges & fittings
ASTM A182 F317L — chemistry & properties
ASTM A182 F317L (Forged flanges & fittings, UNS S31703): chemical composition and mechanical properties. Flue-gas desulphurisation, pulp & paper and chemical service beyond 316L
Chemical composition (wt %)
| C | ≤ 0.03 |
| Mn | ≤ 2 |
| P | ≤ 0.045 |
| S | ≤ 0.03 |
| Si | ≤ 1 |
| Cr | 18 – 20 |
| Ni | 11 – 15 |
| Mo | 3 – 4 |
Mechanical properties
| Tensile strength, min | 485 MPa |
| Yield strength, min | 170 MPa |
| Elongation, min | 30 % |
| Hardness | Not specified |