ASTM B521-12

Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes

STANDARD published on 1.12.2012

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The information about the standard:

Designation standards: ASTM B521-12
Note: WITHDRAWN
Publication date standards: 1.12.2012
SKU: NS-7016
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Other products of non-ferrous metals

Annotation of standard text ASTM B521-12 :

Keywords:

seamless tubing, tantalum, tantalum alloy, tantalum tubes, welded tubing, ICS Number Code 77.150.99 (Other products of non-ferrous metals)

Additional information

Significance and Use

12.1 For the purpose of determining compliance with the specified limits of property requirements, an observed value or a calculated value shall be rounded in accordance with the rounding method of Practice E29.

1. Scope

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 % niobium, electron-beam furnace or vacuum arc melt, or both.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

2. Referenced Documents

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications