TECHNICAL LIBRARY · ASTM DUPLEX PHASE CONTROL
ASTM A923-25 — Detrimental Intermetallic Phase in Duplex Stainless Steels
Procurement reference for tests used to detect detrimental intermetallic phase in specified duplex stainless steels.
Edition control: ASTM A923-25 is the active edition identified in the official ASTM record checked on 31 August 2026. Confirm the authorised publication and order requirements before use.
Scope in Procurement
ASTM A923 provides etch, impact and ferric-chloride test routes for detecting detrimental intermetallic phase in specified duplex austenitic/ferritic stainless steels where toughness or corrosion resistance is significantly affected.
RFQ and Test Controls
- Exact duplex UNS designation and governing product specification
- Applicable ASTM A923 test method or combination of methods
- Product form, section size, heat treatment and cooling history
- Sampling from the location most representative of the critical thermal history
- Sample orientation, preparation and traceability
- Required classification or acceptance criteria from governing documents
- Relationship to mechanical, corrosion and microstructure reporting
The inquiry and purchase order should link the test result to the exact material, product condition, sample identity and governing acceptance requirement.
Scope Boundary
The tests indicate detrimental phase effects within the stated grade and method scope. They do not identify every phase precisely, cover every duplex grade or replace product-specification acceptance requirements.
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Official Publication and Access Policy
Check the official record for ASTM A923-25. Protected procedures, solution recipes, specimen drawings and acceptance tables are not reproduced on this website.
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