ASTM B392-99
Standard Specification for Niobium and Niobium Alloy Bar, Rod, and Wire
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1. Scope
1.1 This specification covers four grades of wrought niobium and niobium alloy bar, rod, and wire as follows:
Note-Committee B-10 has adopted "niobium" as the designation for Element No. 41, formerly named "columbium."1.1.1 R04200-Type 1 -Reactor grade unalloyed niobium,
1.1.2 R04210-Type 2 -Commercial grade unalloyed niobium,
1.1.3 R04251-Type 3 -Reactor grade niobium alloy containing 1% zirconium, and
1.1.4 R04261-Type 4 -Commercial grade niobium alloy containing 1% zirconium.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following precautionary caveat pertains only to the test methods portion of this specification. 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
B391 Specification for Niobium and Niobium Alloy Ingots
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E2626 Guide for Spectrometric Analysis of Reactive and Refractory Metals
ICS Code
ICS Number Code 77.150.99 (Other products of non-ferrous metals)
UNSPSC Code
UNSPSC Code 30266002(Non ferrous alloy bar); 30102402(Non ferrous alloy rods); 12141730(Niobium Nb)
Referencing This Standard
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DOI: 10.1520/B0392-99
Citation Format
ASTM B392-99, Standard Specification for Niobium and Niobium Alloy Bar, Rod, and Wire, ASTM International, West Conshohocken, PA, 1999, www.astm.org
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