ASTM B652/B652M-96(1999)

    Standard Specification for Niobium-Hafnium Alloy Ingots

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    1. Scope

    1.1 This specification covers hafnium alloyed niobium ingots prepared by vacuum-arc melting or electron-beam furnace melting, or both, to produce consolidated metal for processing to various mill shapes.

    1.2 The material covered by this specification is Grade R04295, niobium-base alloy containing approximately 10% hafnium and 1% titanium.

    1.3 The values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. SI values cannot be mixed with inch-pound values.


    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

    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 30266216(Non ferrous alloy extrusion ingot)


    DOI: 10.1520/B0652_B0652M-96R99

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