Work Item
ASTM WK88609

Revision of A358/A358M-19 Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications


The definition of “ferrous” as opposed to “non-ferrous" was revised many years ago to read “metals and alloys that contain iron as the principal component” as opposed to alloys containing 51% iron. A group of austenitic alloys know as the N08xxx alloys had originally been given Nickel Alloy UNS numbers and covered by various B02.07 Specifications. These alloys are to be moved into the corresponding A01 specifications. This process was started with priority given to alloys that were referenced in the ASME Boiler and Pressure Vessel Code. With that done, this item is one of a group of items to relocate the rest of the N08xxx grades into A01 specifications. Once this activity is completed, attention will be given to eliminating duplication by correcting the B02.07 specifications to remove the alloys, or delete the specifications as warranted.

This item is to add UNS Grades N08330 and N08332 to A358


Developed by Subcommittee: A01.10

Committee: A01

Staff Manager: W Scott Orthey

Work Item Status

Date Initiated: 11-15-2023

Technical Contact: Annemarie Appleton

Item: 000