ASTM B521-19

Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes

ABSTRACT
This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades: UNS Grade R05400 which is unalloyed tantalum, powder-metallurgy consolidation, UNS Grade R05200 which is unalloyed tantalum, vacuum melted, UNS Grade R05252 which is tantalum with 2.5% tungsten alloy, vacuum melted, UNS Grade R05255 which is tantalum with 10% tungsten alloy, vacuum melted, and UNS Grade R05240 which is tantalum alloy with 60% tantalum, 40% columbium, electron-beam furnace or vacuum arc melted, or both. Seamless tube shall be made by any seamless method and the welded tube shall be made from flat-rolled product by an automatic or semiautomatic fusion welding process with no addition of filler metal. Mechanical properties such as ultimate tensile strength, yield strength, and elongation shall be determined by tensile, flare, and reverse flattening tests. Nondestructive tests such as hydrostatic test, pneumatic test, helium leak test, and ultrasonic test shall be done as well.
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.
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.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Oct-2019
• ICS: 77.150.99 - Other products of non-ferrous metals
• Technical Committee: B10 - Reactive and Refractory Metals and Alloys
• Drafting Committee: B10.03 - Niobium, Tantalum, and Vanadium

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B521 −19
Standard Specification for
1
Tantalum and Tantalum Alloy Seamless and Welded Tubes
This standard is issued under the fixed designation B521; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Austenitic Stainless Steel and Similar Alloys
E499Practice for Leaks Using the Mass Spectrometer Leak
1.1 This specification covers tantalum and tantalum alloy
Detector in the Detector Probe Mode
seamless and welded tubes of the following grades:
1.1.1 UNS Grade R05400—Unalloyed tantalum, powder-
3. Terminology
metallurgy consolidation,
3.1 Definitions of Terms Specific to This Standard:
1.1.2 UNS Grade R05200—Unalloyed tantalum, vacuum
3.1.1 lot—all material produced from the same ingot or
melted,
single powder blend, of the same size and last annealed in the
1.1.3 UNS Grade R05252—Tantalum + 2.5 % tungsten
same furnace charge.
alloy, vacuum melted.
3.1.2 process length—the one-piece length of each tube that
1.1.4 UNS Grade R05255—Tantalum + 10 % tungsten
results from the production operation that first yields the
alloy, vacuum melted.
tubular form. Sampling and testing should in general be based
1.1.5 UNS Grade R05240—Tantalum alloy, 60% tantalum,
on process lengths unless specifically stated otherwise.
40% niobium, electron-beam furnace or vacuum arc melt, or
both.
4. Ordering Information
1.2 The values stated in inch-pound units are to be regarded
4.1 Ordersformaterialunderthisspecificationshallinclude
as standard. The values given in parentheses are mathematical
the following information:
conversions to SI units that are provided for information only
4.1.1 Quantity,
and are not considered standard.
4.1.2 UNS grade,
1.3 This international standard was developed in accor-
4.1.3 Type (welded or seamless),
dance with internationally recognized principles on standard-
4.1.4 Dimensions,
ization established in the Decision on Principles for the
4.1.5 Nondestructive test requirements, designation of in-
Development of International Standards, Guides and Recom-
spection and testing options if the purchaser has a preference,
mendations issued by the World Trade Organization Technical
and
Barriers to Trade (TBT) Committee.
4.1.6 Additions to the specification and supplementary
requirements, if any.
2. Referenced Documents
5. Materials and Manufacture
2
2.1 ASTM Standards:
5.1 Seamless tube shall be made by any seamless method
E29Practice for Using Significant Digits in Test Data to
that will yield a product meeting the requirements of this
Determine Conformance with Specifications
specification. Intermediate and/or final annealing (if required)
E213Practice for Ultrasonic Testing of Metal Pipe and
shall be accomplished in a manner to prevent contamination
Tubing
and absorption of hydrogen, nitrogen, oxygen, or carbon
E426PracticeforElectromagnetic(EddyCurrent)Examina-
during the annealing process.
tion of Seamless and Welded Tubular Products, Titanium,
5.2 Welded tube shall be made from flat-rolled product by
an automatic or semiautomatic fusion welding process with no
1
This specification is under the jurisdiction of ASTM Committee B10 on
addition of filler metal.
Reactive and Refractory Metals and Alloys and is the direct responsibility of
Subcommittee B10.03 on Niobium and Tantalum.
6. Chemical Composition
Current edition approved Nov. 1, 2019. Published December 2019. Originally
6.1 The material shall conform to the requirements of
approved in 1970. Last previous edition approved in 2012 as B521–12. DOI:
10.1520/B0521-19.
chemical composition prescribed in Table 1.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1.1 Analysis for elements not listed in Table 1 and not
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
normally expected in tantalum shall not be required unless
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specified at time of purchase.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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B521−19
TABLE 1 Ingot Chemical Requirements
(Composition, max weight %)
Element
R05200 R05400 R05252 R05255 R05240
O 0.015 0.030 0.015 0.015 0.020
N 0.010 0.010 0.010 0.010 0.010
C 0.010 0.010 0.010 0.010 0.010
H 0.0015 0.0015 0.0015 0.0015 0.0015
Nb 0.10 0.10 0.50 0.10 35.0–42.0
Mo 0.020 0.020 0.020 0.020 0.020
W 0.050 0.050 2.0–3.5 9.0–11.0 0.050
Ti 0.010 0.010 0.010 0.010 0.010
Si 0.005 0.005 0.005 0.005 0.005
Fe 0.010 0.010 0.010 0.010 0.010
Ni 0.010 0.010 0.010 0.010 0.010
Ta rem
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B521 − 12 B521 − 19
Standard Specification for
1
Tantalum and Tantalum Alloy Seamless and Welded Tubes
This standard is issued under the fixed designation B521; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing
E426 Practice for Electromagnetic (Eddy Current) Examination of Seamless and Welded Tubular Products, Titanium, Austenitic
Stainless Steel and Similar Alloys
E499 Practice for Leaks Using the Mass Spectrometer Leak Detector in the Detector Probe Mode
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 lot—all material produced from the same ingot or single powder blend, of the same size and last annealed in the same
furnace charge.
3.1.2 process length—the one-piece length of each tube that results from the production operation that first yields the tubular
form. Sampling and testing should in general be based on process lengths unless specifically stated otherwise.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Quantity,
4.1.2 UNS grade,
4.1.3 Type (welded or seamless),
4.1.4 Dimensions,
4.1.5 Nondestructive test requirements, if any, designation of inspection and testing options if the purchaser has a preference,
and
4.1.6 Additions to the specification and supplementary requirements, if any.
1
This specification is under the jurisdiction of ASTM Committee B10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee
B10.03 on Niobium and Tantalum.
Current edition approved Dec. 1, 2012Nov. 1, 2019. Published January 2013December 2019. Originally approved in 1970. Last previous edition approved in 20042012
as B521 – 98 (2004).B521 – 12. DOI: 10.1520/B0521-12.10.1520/B0521-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B521 − 19
5. Materials and Manufacture
5.1 Seamless tube shall be made by any seamless method that will yield a product meeting the requirements of this specification.
Intermediate and/or final annealing (if required) shall be accomplished in a manner to prevent contamination and absorption of
hydrogen, nitrogen, oxygen, or carbon during the annealing process.
5.2 Welded tube shall be made from flat-rolled product by an automatic or semiautomatic fusion welding process with no
addition of filler metal.
6. Chemical Composition
6.1 The material shall conform to the requirements of chemical composition prescribed in Table 1.
6.1.1 Analysis for elements not listed in Table 1 and not normally expected in tantalum shall not be required unless specified
at time of purchase.
6.2 The manufacturer’s ingot analysis shall be considered the chemical analysis for products supplied unde
...