ASTM B275-13e1
(Practice)Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
ABSTRACT
This practice covers a system for designating cast and wrought nonferrous metals and alloys. It was originally adopted for light metals and alloys that are cast and wrought and later extended to heavier base-metal die-casting alloys. Chemical composition limits serve as the basis for the Unified Numbering System (UNS) designations. The temper designations used for all metal forms, except for ingots, follow the alloy designation.
SCOPE
1.1 This practice covers a system for designating die-casting alloys of zinc, tin and lead. Those designations currently being used in specifications under the jurisdiction of Committees B02 on Nonferrous Metals are listed in Appendix Table X2.1.Note 1—The alloy designations now being used in Committee B07 specifications for aluminum and aluminum-alloy wrought and cast products conform to ANSI H35.1. Alloys formerly codified by this practice and the corresponding ANSI designations are shown in Tables X3.1 and X3.2 of the Appendix for legacy purposes.Note 2—The alloy designations now being used in Committee B07 specifications for magnesium and magnesium-alloy wrought and cast products conform to Practice B951, as indicated in Appendix X4. Alloy designations formerly codified by this practice are no longer relevant.
1.2 The equivalent Unified Numbering System (UNS) alloy designations shown in the appendixes are in accordance with Practice E527.
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Standards Content (Sample)
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Designation:B275 −13
StandardPractice for
Codification of Certain Nonferrous Metals and Alloys, Cast
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and Wrought
This standard is issued under the fixed designation B275; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
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ε NOTE—Editorial changes were made throughout in April 2014.
1. Scope* Magnesium-Alloys, Cast and Wrought
E527 Practice for Numbering Metals and Alloys in the
1.1 Thispracticecoversasystemfordesignatingdie-casting
Unified Numbering System (UNS)
alloys of zinc, tin and lead. Those designations currently being
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2.3 ANSI Standard:
usedinspecificationsunderthejurisdictionofCommitteesB02
H35.1 Alloy and Temper Designation Systems for Alumi-
on Nonferrous Metals are listed in Appendix Table X2.1.
num
NOTE 1—The alloy designations now being used in Committee B07
specifications for aluminum and aluminum-alloy wrought and cast prod-
3. Basis of Codification
uctsconformtoANSIH35.1.Alloysformerlycodifiedbythispracticeand
the correspondingANSI designations are shown in Tables X3.1 and X3.2
3.1 The designations for alloys and unalloyed metals are
of the Appendix for legacy purposes.
based on their chemical composition limits.
NOTE 2—The alloy designations now being used in Committee B07
specifications for magnesium and magnesium-alloy wrought and cast
3.2 Designations shall be assigned, revised, and cancelled
products conform to Practice B951, as indicated in Appendix X4. Alloy
by Subcommittee B02.04 of ASTM Committee B02 on Non-
designations formerly codified by this practice are no longer relevant.
ferrous Metals and Alloys on written requests to its chairman.
1.2 The equivalent Unified Numbering System (UNS) alloy
Complete chemical composition limits shall be submitted with
designations shown in the appendixes are in accordance with
request for assignment or revision of designations. Arbitrary
Practice E527.
assignments by other subcommittees or committees will not be
recognized.
2. Referenced Documents
2.1 The following documents form a part of this practice to 4. Alloys
the extent referenced herein:
4.1 Designationforalloysshallconsistofnotmorethantwo
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2.2 ASTM Standards: letters representing the alloying elements (Note 3) specified in
B86 Specification for Zinc and Zinc-Aluminum (ZA) Alloy the greatest amount, arranged in order of decreasing
Foundry and Die Castings
percentages, or in alphabetical order if of equal percentages,
B102 Specification for Lead- and Tin-Alloy Die Castings followed by the respective percentages rounded off to whole
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(Withdrawn 2011)
numbers and a serial letter (Notes 4 and 5). The full name of
B240 Specification for Zinc and Zinc-Aluminum (ZA) Al- the base metal precedes the designation, but it is omitted for
loys in Ingot Form for Foundry and Die Castings
brevity when the base metal being referred to is obvious.
B951 PracticeforCodificationofUnalloyedMagnesiumand
NOTE 3—For codification, an alloying element is defined as an element
(other than the base metal) having a minimum content greater than zero
either directly specified or computed in accordance with the percentages
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This practice is under the jurisdiction ofASTM Committee B02 on Nonferrous
specified.
Metals andAlloys and is the direct responsibility of Subcommittee B02.04 on Zinc
NOTE 4—The serial letter is arbitrarily assigned in alphabetical se-
and Cadmium.
quencestartingwith“A”(omitting“I”and“O”)andservestodifferentiate
Current edition approved Dec. 1, 2013. Published January 2014. Originally
otherwise identical designations. A serial letter is necessary to complete
approved in 1962. Last previous edition approved in 2013 as B275 – 05 (2013).
each designation.
DOI: 10.1520/B0275-13E01.
NOTE 5—The designation of a casting alloy in ingot form is derived
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
from the composition specified for the corresponding alloy in the form of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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The last approved version of this historical standard is referenced on Available in the Related Materials section (gray pages) of the Annual Book of
www.astm.org. ASTM Standards, Vol 02.02.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B275−13
castings. Thus, a ca
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