ASTM B 521 : 1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes
English
10-04-1998
11-11-2014
| Committee |
B 10
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
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.
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