WCB vs SS316 Valve Material
When to specify WCB carbon steel versus SS316/CF8M valves for process, steam, and corrosive duty. Selection guide from Supreme Valves India.
Quick take
No. WCB is standard for non-corrosive hydrocarbons and steam. SS316 is preferred for chlorides, acids, and hygienic or marine splash where carbon steel corrodes. Compare package RFQs on the WCB valve RFQ and stainless steel valve RFQ landings.
When to choose each option
Use the RFQ checklist on linked landing pages to lock MOC, class, ends, and listing requirements before commercial evaluation. Wrong material or stem type is a common cause of rework on site.
- Match medium, temperature, and chloride level first.
- Confirm flange standard (ASME Class vs PN) and face type.
- State fire-safe, cryogenic, or listing needs explicitly.
- Send the full BOQ line — size mix drives price and lead time.