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ASTM International - ASTM B391-03

Standard Specification for Niobium and Niobium Alloy Ingots

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Organization: ASTM International
Publication Date: 10 May 2003
Status: inactive
Page Count: 3
ICS Code (Other products of non-ferrous metals): 77.150.99
scope:

1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill shapes.

Note 1-Committee B10 has adopted "niobium" as the designation for Element No. 41, formerly named "columbium."

1.2 The materials covered by this specification are:

1.2.1 R04200-Type 1-Reactor grade unalloyed niobium,

1.2.2 R04210-Type 2-Commercial grade unalloyed niobium,

1.2.3 R04251-Type 3-Reactor grade niobium alloy containing 1 % zirconium, and

1.2.4 R04261-Type 4-Commercial grade niobium alloy containing 1 % zirconium.

1.3 Unless a single unit is used, for example force for hardness testing in kN, the values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 The following precautionary caveat pertains only to the test method portions 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.

abstract:

This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill... View More

Document History

April 1, 2018
Standard Specification for Niobium and Niobium Alloy Ingots
1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill...
October 1, 2009
Standard Specification for Niobium and Niobium Alloy Ingots (Withdrawn 2018)
1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill...
October 1, 2009
Standard Specification for Niobium and Niobium Alloy Ingots
1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill...
ASTM B391-03
May 10, 2003
Standard Specification for Niobium and Niobium Alloy Ingots
1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill...
November 10, 1999
Standard Specification for Niobium and Niobium Alloy Ingots
1.1 This specification covers unalloyed and alloyed niobium ingots prepared by vacuum- or plasma-arc melting or electron-beam melting to produce consolidated metal for processing to various mill...
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