TECHNICAL LIBRARY · ASTM HEAT-RESISTANT WELDED TUBE
ASTM B739-03(2023) — Nickel-Iron-Chromium-Silicon Welded Tube
Procurement reference for UNS N08330 and N08332 welded tube under ASTM B739.
Edition control: ASTM B739-03(2023) 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 B739 covers welded tube in UNS N08330 and N08332 for heat-resisting applications and general corrosive service. The exact alloy, cold-work sequence and final heat-treatment condition are part of the ordered material identity.
RFQ and Product Controls
- Exact UNS N08330 or N08332 and ASTM B739-03(2023) edition
- Heat-resisting or corrosive-service duty and governing equipment specification
- Outside diameter, wall thickness, length and dimensional tolerances
- Automatic no-filler welding, post-weld cold work and final heat treatment
- Chemical, mechanical, hardness and grain-size requirements
- Flattening, flange 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 B739 is a welded-tube route and does not make N08330 and N08332 interchangeable. It does not cover welded pipe or seamless tube, and service limits require project-specific engineering verification.
Related MNK Technical Pages
Official Publication and Access Policy
Check the official record for ASTM B739-03(2023). 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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