Forged flanges & fittings
ASTM A182 F321H — chemistry & properties
ASTM A182 F321H (Forged flanges & fittings, UNS S32109): chemical composition and mechanical properties. Stabilised stainless for high-temperature refinery and power piping
Chemical composition (wt %)
| C | 0.04 – 0.1 |
| Mn | ≤ 2 |
| P | ≤ 0.045 |
| S | ≤ 0.03 |
| Si | ≤ 1 |
| Cr | 17 – 19 |
| Ni | 9 – 12 |
Mechanical properties
| Tensile strength, min | 515 MPa |
| Yield strength, min | 205 MPa |
| Elongation, min | 30 % |
| Hardness | Not specified |