Hydrogen Sulphide (H₂S - Sour Gas) service
Material Compatibility
Inconel 625 (UNS N06625) for Hydrogen Sulphide (H₂S - Sour Gas)
Is Inconel 625 (UNS N06625) the right valve material for Hydrogen Sulphide (H₂S - Sour Gas)? The engineering rating, the conditions that limit it, and the better alternatives.
Excellent
Is Inconel 625 (UNS N06625) compatible with Hydrogen Sulphide (H₂S - Sour Gas)?
For Hydrogen Sulphide (H₂S - Sour Gas) (H₂S) valve service, Inconel 625 (UNS N06625) is excellent — an excellent choice. Excellent SSC resistance; used for valve trim and high-alloy applications.
Better materials for Hydrogen Sulphide (H₂S - Sour Gas)
Higher-rated options for this service, from the compatibility data.
All rated materials for Hydrogen Sulphide (H₂S - Sour Gas)
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026
Connected Engineering
Standards
Failure Modes
Services
Need Inconel 625 (UNS N06625) valves for Hydrogen Sulphide (H₂S - Sour Gas)?
Send your concentration, temperature and pressure — we confirm Inconel 625 (UNS N06625) suitability for Hydrogen Sulphide (H₂S - Sour Gas) (or recommend an upgrade) and supply with full certification.
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