Hydrochloric Acid (HCl) service
Material Compatibility

Duplex 2205 for Hydrochloric Acid (HCl)

Is Duplex 2205 the right valve material for Hydrochloric Acid (HCl)? The engineering rating, the conditions that limit it, and the better alternatives.

Not Recommended

Is Duplex 2205 compatible with Hydrochloric Acid (HCl)?

For Hydrochloric Acid (HCl) (HCl) valve service, Duplex 2205 is not recommended — not recommended. Chloride SCC risk.

Better materials for Hydrochloric Acid (HCl)

Higher-rated options for this service, from the compatibility data.

Hastelloy C-276ExcellentHastelloy B-3ExcellentPTFE-linedExcellentRubber-lined (natural rubber)GoodPVDF-linedGood

All rated materials for Hydrochloric Acid (HCl)

Hastelloy C-276ExcellentHastelloy B-3ExcellentPTFE-linedExcellentRubber-lined (natural rubber)GoodPVDF-linedGoodCarbon SteelNot RecommendedSS 316LNot Recommended
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Materials
Super Duplex 2507Hastelloy C-276
Tools
Material Compatibility

Need Duplex 2205 valves for Hydrochloric Acid (HCl)?

Send your concentration, temperature and pressure — we confirm Duplex 2205 suitability for Hydrochloric Acid (HCl) (or recommend an upgrade) and supply with full certification.

Request a Quote WhatsApp Call
Products
Browse All Valve Products

Engineering references

Hydrochloric Acid (HCl) service guideFull compatibility, valves & standardsDuplex 2205 compatibilityEvery fluid this material handlesCompatibility AtlasThe full material x fluid matrix