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ASTM B652/B652M-10

Current Revision

Standard Specification for Niobium-Hafnium Alloy Ingots

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1.1 This specification covers hafnium alloyed niobium ingots prepared by vacuum- or plasma- arc melting or electron-beam furnace melting, or a combination of these methods, 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 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.


This specification covers hafnium alloyed niobium ingots prepared by vacuum- or plasma- arc melting or electron-beam furnace melting, or a combination of these methods, to produce consolidated metal for processing to various mill shapes. The material shall conform to the required chemical composition prescribed. Each ingot should be tested for soundness by non-destructive test methods, such as dye penetrant and ultrasonic testing. Each ingot shall be tested for chemical composition in at least three positions along the length of the ingot.


The following applies to all specified limits in this standard for purposes of determining conformance with this specification: The observed value or a calculated value shall be rounded off to the nearest unit in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.

SDO ASTM: ASTM International
Document Number B652
Publication Date May 1, 2010
Language en - English
Page Count 2
Revision Level 10
Supercedes
Committee B10.03
Publish Date Document Id Type View
May 1, 2010 B0652_B0652M-10 Revision
May 1, 2004 B0652_B0652M-04 Revision
Oct. 1, 2018 B0652_B0652M-10R18 Reaffirmation
May 10, 1999 B0652_B0652M-96R99 Reaffirmation