TECHNICAL LIBRARY · ASTM WELDED CORROSION-RESISTANT TUBE
ASTM B674-21 — Welded Nickel-Alloy Tube
Procurement reference for welded UNS N08925, N08354 and N08926 nickel-alloy tube under ASTM B674.
Edition control: ASTM B674-21 is the active edition identified in the official ASTM catalogue checked on 1 September 2026. Confirm the authorised publication and purchase-order requirements before use.
Scope in Procurement
ASTM B674 covers welded tube in UNS N08925, N08354 and N08926 for general corrosion applications. The exact UNS designation and final condition must be maintained throughout the inquiry and order.
RFQ and Product Controls
- Exact UNS N08925, N08354 or N08926 and ASTM B674-21 edition
- Process medium, equipment duty and governing design specification
- Outside diameter, wall thickness, length and dimensional tolerances
- Automatic welding without filler, post-weld cold work and final heat treatment
- Chemical and mechanical requirements for the selected alloy and condition
- Flattening, flanging and required leak or electric examination route
- ASTM B751 requirements, inspection document, traceability, marking and destination
The material identity must remain traceable from the producing heat and lot through manufacture, welding or seamless processing, heat treatment, testing, inspection documentation, marking and final release.
Scope Boundary
ASTM B674 does not cover every high-alloy tube and does not make N08925, N08354 and N08926 interchangeable. Historical N08904 coverage is not presented as current; the product route must follow the current governing specification.
Related MNK Technical Pages
Official Publication and Access Policy
Check the official record for ASTM B674-21. This page is an original procurement-oriented summary. Protected grade tables, property values, tolerances, dimensions and test clauses are not reproduced on this website.
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