ASTM A216 WCB Chemical Composition & Mechanical Properties
ASTM A216 WCB Chemical Composition & Mechanical Properties
A216 WCB is carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.
A216 WCB Temperature Range: -29~425°C
A216 WCB Equivalent material: ASTM A105
A216 WCB Suitable Fluid: Oil, Gas, Water, Petrochemical, non Corrosion Fluid
ASTM A216 WCB Chemical Composition
| Element | Composition, % , All Value are maximum | |
| WCB | WCC | |
| UNS J0302 | UNS J02503 | |
| Carbon | 0.30 (Note B) | 0.25 (Note C) |
| Mangaese | 1 | 1.20 (Note C) |
| Phosphorus | 0.035 | 0.035 |
| Sulfur | 0.035 (Note D) | 0.035 (Note D) |
| Silicon | 0.6 | 0.6 |
| Specified residual elements | ||
| Copper | 0.3 | 0.3 |
| Nickel | 0.5 | 0.5 |
| Chromium | 0.5 | 0.5 |
| Molybdenum, max | 0.3 | 0.2 |
| Vanadium | 0.03 | 0.03 |
| Total of these specified residual elements (Note E) | 1 | 1 |
Note:
- For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % Mn above the specified maximum will be permitted up to a maximum of 1.28 %.
- For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted to a maximum of 1.40 %.
- For lower maximum sulfur content, see Supplementary Requirement S52.
- Not applicable when Supplementary Requirement S11 is specified.
ASTM A216 WCB Mechanical Properties
| WCB | WCC | |
| UNS J0302 | UNS J02503 | |
| Tensile strength, ksi [MPa] | 70 to 95 [485 to 655] | 70 to 95 [485 to 655] |
| Yield strength,A min, ksi [MPa] (Note A) | 36 [250] | 40 [275] |
| Elongation in 2 in. [50 mm], min, % (Note B) | 22 | 22 |
| Reduction of area, min, % | 35 | 35 |
Note:
- Determine by either 0.2 % offset method or 0.5 % extension-under-load method. When ICI test bars are used in tensile testing as provided for in Specification
- A703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.