SS butt-weld fittings
ASTM A403 WP304 — chemistry & properties
ASTM A403 WP304 (SS butt-weld fittings, UNS S30400): chemical composition and mechanical properties. General corrosion-resistant piping
Chemical composition (wt %)
| C | ≤ 0.08 |
| Mn | ≤ 2 |
| P | ≤ 0.045 |
| S | ≤ 0.03 |
| Si | ≤ 1 |
| Cr | 18 – 20 |
| Ni | 8 – 11 |
Mechanical properties
| Tensile strength, min | 515 MPa |
| Yield strength, min | 205 MPa |
| Elongation, min | 28 % |