Low-temp CS fittings
ASTM A420 WPL6 — chemistry & properties
ASTM A420 WPL6 (Low-temp CS fittings): chemical composition and mechanical properties. Low-temperature carbon steel piping to -46 °C
Chemical composition (wt %)
| C | ≤ 0.3 |
| Mn | 0.6 – 1.35 |
| P | ≤ 0.035 |
| S | ≤ 0.04 |
| Si | 0.15 – 0.4 |
| Cr | ≤ 0.3 |
| Ni | ≤ 0.4 |
| Mo | ≤ 0.12 |
| Cu | ≤ 0.4 |
| V | ≤ 0.08 |
| Nb | ≤ 0.02 |
Mechanical properties
| Tensile strength, min | 415–585 MPa |
| Yield strength, min | 240 MPa |
| Elongation, min | 22 % |
| Impact test | Charpy at −46 °C |