Vacuum Service service
Material Compatibility
A217 WC6/WC9 (Cr-Mo) for Vacuum Service
Is A217 WC6/WC9 (Cr-Mo) the right valve material for Vacuum Service? The engineering rating, the conditions that limit it, and the better alternatives.
Excellent
Is A217 WC6/WC9 (Cr-Mo) compatible with Vacuum Service?
For Vacuum Service (Sub-atmospheric pressure) valve service, A217 WC6/WC9 (Cr-Mo) is excellent — an excellent choice. For crude vacuum unit above 400°C.
Better materials for Vacuum Service
Higher-rated options for this service, from the compatibility data.
All rated materials for Vacuum Service
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026
Connected Engineering
Failure Modes
Need A217 WC6/WC9 (Cr-Mo) valves for Vacuum Service?
Send your concentration, temperature and pressure — we confirm A217 WC6/WC9 (Cr-Mo) suitability for Vacuum Service (or recommend an upgrade) and supply with full certification.
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