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ISO 15156-3 Annex A, Table A.3 — ASTM Equivalent

Holding a datasheet that specifies ISO 15156-3 Annex A, Table A.3 (ISO)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of ISO 15156-3 Annex A, Table A.3?

ISO 15156-3 Annex A, Table A.3 is a ISO designation corresponding to ASTM A182 F53 / UNS S32750 (Super Duplex 2507) (Super Duplex 2507) for industrial valve service. The full grade data is below - equivalence is by nominal chemistry and mechanical class, so confirm composition and heat-treat condition against the governing standard before substituting in critical service.

Super Duplex 2507 - both form.

Service temperature-50°C to +300°C
Nominal compositionCr 25%, Ni 7%, Mo 4%, N 0.27%. PREN > 40. UNS S32750.

Typical service: Seawater injection and produced water treatment (offshore); Subsea control valve bodies and wellhead isolation; Desalination plant high-pressure piping valves

Also designated:S32750 [UNS]X2CrNiMoN25-7-4 [EN]1.4410 [EN]ISO 15156-3 Annex A, Table A.3 [ISO]
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

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Need valves in ISO 15156-3 Annex A, Table A.3 / its ASTM equivalent?

We supply A182 F53 / UNS S32750 (Super Duplex 2507) valves - the ISO 15156-3 Annex A, Table A.3 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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