ASTM B884-11(2019)

Standard Specification for Niobium-Titanium Alloy Billets, Bar, and Rod for Superconducting Applications

ABSTRACT
This specification covers three grades of zirconium and zirconium alloy forgings. The forgings shall be formed with conventional forging equipment normally found in primary ferrous and nonferrous metal plants. The forgings are furnished in three grades as Grade R60702, Grade R60702, and Grade R60705. Forgings shall be furnished in the annealed conditions. The material shall conform to the requirements as to chemical composition and tensile properties prescribed. Two tension tests shall be made from each lot. Two chemistry tests for hydrogen and nitrogen content shall be made from each lot of finished product. If the results of any tests of any lot do not conform to the requirements specified, retests shall be made on additional forgings of double the original number of the same lot, each of which shall conform to the requirements specified.
SCOPE
1.1 This specification covers niobium-titanium alloy billets, bars, and rods, at 46 to 48 % titanium. This material is used in the manufacture of wire for superconducting applications.  
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 The following precautionary caveat pertains only to the test methods portion, Section 14, 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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: Published
• Publication Date: 31-Mar-2019
• ICS: 77.120.50 - Titanium and titanium alloys
• Technical Committee: B10 - Reactive and Refractory Metals and Alloys
• Drafting Committee: B10.03 - Niobium, Tantalum, and Vanadium

Standards Content (Sample)

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.
Designation: B884 −11 (Reapproved 2019)
Standard Specification for
Niobium-Titanium Alloy Billets, Bar, and Rod for
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Superconducting Applications
This standard is issued under the fixed designation B884; 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 flection Method Using Pulsed Longitudinal Waves (With-
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drawn 2007)
1.1 This specification covers niobium-titanium alloy billets,
E384 Test Method for Microindentation Hardness of Mate-
bars, and rods, at 46 to 48 % titanium. This material is used in
rials
the manufacture of wire for superconducting applications.
E2626 Guide for Spectrometric Analysis of Reactive and
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1.2 The values stated in inch-pound units are to be regarded
Refractory Metals (Withdrawn 2017)
as standard. The values given in parentheses are mathematical
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2.2 ANSI Standard:
conversions to SI units that are provided for information only
ANSI B46-1 Surface Texture
and are not considered standard.
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2.3 ASNT Standard:
1.3 The following precautionary caveat pertains only to the
ASNT SNT-TC-1A Personnel Qualification and Certifica-
test methods portion, Section 14, of this specification: This
tion in Nondestructive Testing
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user
3. Terminology
of this standard to establish appropriate safety, health, and
3.1 Definitions of Terms Specific to This Standard:
environmental practices and determine the applicability of
3.1.1 rod, n—material greater than 0.5 in. (13 mm) and less
regulatory limitations prior to use.
than 2.5 in. (60 mm) in diameter.
1.4 This international standard was developed in accor-
3.1.2 bar, n—material greater than or equal to 2.5 in (60
dance with internationally recognized principles on standard-
mm) and less than 6 in. (150 mm) in diameter.
ization established in the Decision on Principles for the
3.1.3 billet, n—material greater than or equal to 6 in. (150
Development of International Standards, Guides and Recom-
mm) in diameter.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.1.4 lot, n—a lot shall consist of material of the same size,
shape, condition, and finish produced from the same ingot or
2. Referenced Documents
powder blend by the same reduction schedule and the same
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2.1 ASTM Standards: heat treatment parameters. Unless otherwise agreed between
E29 Practice for Using Significant Digits in Test Data to
manufacturer and purchaser, a lot shall be limited to the
Determine Conformance with Specifications product of an 8th period for final continuous anneal, or to a
E92 Test Methods for Vickers Hardness and Knoop Hard-
single furnace load for final batch anneal.
ness of Metallic Materials
4. Ordering Information
E112 Test Methods for Determining Average Grain Size
E165/E165M Practice for Liquid Penetrant Testing for Gen-
4.1 Purchase orders for material under this specification
eral Industry
should include:
E214 Practice for Immersed Ultrasonic Testing by the Re-
4.1.1 ASTM designation and year of issue,
4.1.2 Quantityinweight,numberofpieces,anddimensions,
4.1.3 Grainsizelimitfordiametersgreaterthan7.75in.(see
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This specification is under the jurisdiction of ASTM Committee B10 on
7.2 and Table 1),
Reactive and Refractory Metals and Alloys and is the direct responsibility of
Subcommittee B10.03 on Niobium and Tantalum.
Current edition approved April 1, 2019. Published May 2019. Originally
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approved in 1997. Last previous edition approved in 2011 as B884 – 11. DOI: The last approved version of this historical standard is referenced on
10.1520/B0884-11R19. www.astm.org.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
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Standards volume information, refer to the standard’s Document Summary page on AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
the ASTM website. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B884 − 11 (2019)
TABLE 1 Grain Size Requirements TABLE 3 Permissible Variations in Diame
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