Hydrogen Sulphide (H₂S - Sour Gas) service
Material Compatibility
Duplex 2205 for Hydrogen Sulphide (H₂S - Sour Gas)
Is Duplex 2205 the right valve material for Hydrogen Sulphide (H₂S - Sour Gas)? The engineering rating, the conditions that limit it, and the better alternatives.
Good
Is Duplex 2205 compatible with Hydrogen Sulphide (H₂S - Sour Gas)?
For Hydrogen Sulphide (H₂S - Sour Gas) (H₂S) valve service, Duplex 2205 is good — a good choice. Restricted to solution-annealed condition, max hardness per NACE MR0175 Table D.1.
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
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Failure Modes
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Need Duplex 2205 valves for Hydrogen Sulphide (H₂S - Sour Gas)?
Send your concentration, temperature and pressure — we confirm Duplex 2205 suitability for Hydrogen Sulphide (H₂S - Sour Gas) (or recommend an upgrade) and supply with full certification.
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