Standard Active Last Updated: Nov 15, 2018
ASTM B739-03(2018)

Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Welded Tube


This specification covers the standard for welded tube UNS N08330 and UNS N08332 alloys intended for use in heat resisting applications and general corrosive service. The tubes shall be manufactured from flat-rolled alloy by an automatic welding process with no addition of filler metal. The tubes shall also undergo cold-working subsequent to welding and prior to final heat treatment. Material properties such as yield strength, tensile strength, elongation, and hardness and other requirements such as grain size and annealing temperature shall all be evaluated.


1.1 This specification covers alloys UNS N08330 and UNS N08332 in the form of welded tube intended for heat resisting applications and general corrosive service.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Book of Standards Volume: 02.04
Developed by Subcommittee: B02.07
Pages: 2
DOI: 10.1520/B0739-03R18
ICS Code: 77.150.40