TECHNICAL LIBRARY · ISO PROCUREMENT REFERENCE
ISO 17781:2017 — Duplex Stainless Microstructure Quality Control
Procurement reference for destructive quality-control testing of duplex stainless components and fabrication welds.
Edition control: Published; Edition 1, last reviewed and confirmed in 2023. This original MNK-G.S.A summary does not reproduce or replace the protected ISO publication. Confirm the current authorised edition and governing order documents before use.
Scope in Procurement
ISO 17781:2017 addresses quality-control methods and test conditions used to characterize the microstructure of ferritic/austenitic duplex stainless components in solution-annealed condition and fabrication welds in as-welded condition.
It supplements the relevant product and fabrication standards for destructive testing intended to detect harmful intermetallic phases or precipitates and to document laboratory results.
The standard is not a product specification, grade-equivalence document or universal acceptance route. The component, weld, sampling plan, applicable test method and acceptance criteria must be established by the governing project documents.
| Material context | Ferritic/austenitic duplex stainless steels |
| Items addressed | Solution-annealed components and as-welded fabrication welds |
| Procurement role | Supplementary destructive microstructure quality control |
| Scope boundary | Does not replace product, fabrication or project acceptance standards |
Where This Standard Fits
- Duplex and super-duplex project inquiries
- Microstructure-control planning for components or welds
- Laboratory documentation and traceability requirements
- Coordinating product, fabrication and project-specific acceptance routes
Ordering and Document Controls
- Exact ISO edition and governing project specification
- Grade, product form, component or weld identification
- Delivery and heat-treatment condition
- Sampling location, test route and acceptance criteria
- Qualified laboratory, reporting and traceability requirements
- Fabrication history, destination and inspection schedule
Related MNK Technical Pages
Official Publication and Access Policy
Official record: ISO 17781:2017 at ISO. Obtain authorised content through ISO or an authorised national standards body. Protected clauses, tables and acceptance values are not reproduced here.
Send Your Standards-Based Inquiry
Send the required grade, product form, dimensions, quantity, governing standard, inspection-document requirements and delivery destination. MNK-G.S.A will review the specification and coordinate a sourcing response.
MNK-G.S.A | Industrial Procurement & Sourcing | mnkmetals.com | sales@mnkmetals.com
Technical Sources & Revision
Source: ISO. ISO 17781:2017
Document / edition: ISO 17781:2017
Source used for: The public ISO catalogue record supports the document identity, publication status and scope summary on this page. It is used for the stated material or product coverage and the named classification, inspection or test method, where applicable. It does not establish numerical acceptance limits or certify a supplied product.
Technical source review:
Review scope: the public publisher record and this procurement summary, not a clause-by-clause audit of the full standard. Use the governing publication, purchase specification and product or test documentation for acceptance.