This specification covers foils, sheets, strips, and plates made from UNS R04295 hafnium alloyed niobium ingots and billets. The materials should be in the annealed condition unless otherwise specified. The materials may also be in a forged, rolled, extruded, swaged, or drawn finish in a cleaned, machined, or ground condition. All the products should be formed with conventional extrusion, forging, and rolling equipment normally used in metal working plants.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers hafnium alloyed niobium foil, sheet, strip, and plate.
1.2 The material covered by this specification is R04295, niobium-base alloy containing approximately 10 % hafnium and 1 % titanium.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 14, of this specification: This standard does not purport to address all of the safety problems, 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.
B652/B652M Specification for Niobium-Hafnium Alloy Ingots
E8 Test Methods for Tension Testing of Metallic Materials
E21 Test Methods for Elevated Temperature Tension Tests 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
niobium-hafnium alloy foil; niobium-hafnium alloy plate; niobium-hafnium alloy sheet; niobium-hafnium alloy strip; Niobium-hafnium alloys; UNS R04295 (Nb-Cb alloy);
ICS Number Code 77.150.99 (Other products of non-ferrous metals)
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