ASTM B884-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: B884 – 05
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.
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1. Scope ANSI B46-1 Surface Texture
2.3 ASNT Standard:
1.1 This specification covers niobium-titanium alloy billets,
ASNT SNT-TC-1A Personnel Qualification and Certifica-
bars, and rods, at 46 to 48 % titanium. This material is used in
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tion in Nondestructive Testing
the manufacture of wire for superconducting applications.
1.2 The values stated in either inch-pound or SI units are to
3. Terminology
be regarded separately as standard. The values stated in each
3.1 Definitions of Terms Specific to This Standard:
system are not exact equivalents; therefore each system must
3.1.1 rod, n—material greater than 0.5 in. (13 mm) and less
be used independent of the other; SI values cannot be mixed
than 2.5 in (60 mm) in. diameter.
with inch-pound values. SI units are stated in parentheses.
3.1.2 bar, n—material greater than or equal to 2.5 in (60
1.3 The following precautionary caveat pertains only to the
mm) and less than 6 in. (150 mm) in diameter.
test methods portion, Section 14, of this specification: This
3.1.3 billet, n—material greater than or equal to 6 in. (150
standard does not purport to address all of the safety concerns,
mm) in diameter.
if any, associated with its use. It is the responsibility of the user
3.1.4 lot, n—alotshallconsistofallmaterialproducedfrom
of this standard to establish appropriate safety and health
the same ingot at one time, with the same cross section and
practices and determine the applicability of regulatory limita-
with the same nominal metallurgical parameters.
tions prior to use.
4. Ordering Information
2. Referenced Documents
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4.1 Purchase orders for material under this specification
2.1 ASTM Standards:
should include:
E29 Practice for Using Significant Digits in Test Data to
4.1.1 ASTM designation and year of issue,
Determine Conformance with Specifications
4.1.2 Quantityinweight,numberofpieces,anddimensions,
E92 Test Method for Vickers Hardness of Metallic Materi-
4.1.3 Grainsizelimitfordiametersgreaterthan7.75in.(see
als
7.2 and Table 1),
E112 Test Methods for Determining Average Grain Size
4.1.4 Surface texture, if required (see 10.3),
E165 PracticeforLiquidPenetrantExaminationforGeneral
4.1.5 Annealing condition, if different from 7.1,
Industry
4.1.6 Permissible variations in diameter and length (see 9.1
E214 Practice for Immersed Ultrasonic Testing by the
3 and 9.2),
Reflection Method Using Pulsed Longitudinal Waves
4.1.7 Sampling and analytical methods, if required (see
E384 Test Method for Microindentation Hardness of Mate-
11.3),
rials
4.1.8 Inspection requirements (see Section 15),
2.2 ANSI Standard:
4.1.9 Certification and report needs (see Section 17), and
4.1.10 Additions to the specification and supplementary
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This specification is under the jurisdiction of ASTM Committee B10 on requirements, as required.
Reactive and Refractory Metals and Alloys and is the direct responsibility of
Subcommittee B10.03 on Niobium and Tantalum.
5. Materials and Manufacture
Current edition approved May 1, 2005. Published June 2005. Originally
5.1 Materials covered by this specification shall be made
approved in 1997. Last previous edition approved in 2001 as B884 - 01. DOI:
10.1520/B0884-05. from ingots which are produced by vacuum or plasma-arc
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
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Withdrawn. The last approved version of this historical standard is referenced AvailablefromTheAmericanSocietyforNondestructiveTesting(ASNT),P.O.
on www.astm.org. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B884 – 05
TABLE 1 Grain Size Requirements
9. Permissible Variations in Dimensions
Rod, Bar, and Billet Grain Size Number
9.1 Permissible variations in diameters for finished product
Diameter in. (mm) (weighted average)
shall be as specified in Table 3, unless otherwise agreed to
0.5 to 2 incl (13 to 50 incl) 4.5 or finer
between manufacturer and purchaser.
2 excl to 4.5
...