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ASTM B521-98

Historical Revision

Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes

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1.1 This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades:

1.1.1 UNS Grade R05400 -Unalloyed tantalum, powder-metallurgy consolidation,

1.1.2 UNS Grade R05200 -Unalloyed tantalum, vacuum melted,

1.1.3 UNS Grade R05252 -Tantalum + 2.5% tungsten alloy, vacuum melted.

1.1.4 UNS Grade R05255 -Tantalum + 10% tungsten alloy, vacuum melted.

1.1.5 UNS Grade R05240 -Tantalum alloy, 60% tantalum, 40% columbium, electron-beam furnace or vacuum arc melt, or both.

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.


SDO ASTM: ASTM International
Document Number B521
Publication Date April 10, 1998
Language en - English
Page Count 3
Revision Level 98
Supercedes
Committee B10.03
Publish Date Document Id Type View
April 1, 2022 B0521-22 Revision
Nov. 1, 2019 B0521-19 Revision
Dec. 1, 2012 B0521-12 Revision
April 10, 1998 B0521-98 Revision
May 1, 2004 B0521-98R04 Reaffirmation