1、Designation: B275 131Standard Practice forCodification of Certain Nonferrous Metals and Alloys, Castand Wrought1This standard is issued under the fixed designation B275; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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.1NOTEEditorial changes were made throughout i
3、n April 2014.1. Scope*1.1 This practice covers a system for designating die-castingalloys of zinc, tin and lead. Those designations currently beingused in specifications under the jurisdiction of Committees B02on Nonferrous Metals are listed in Appendix Table X2.1.NOTE 1The alloy designations now be
4、ing used in Committee B07specifications for aluminum and aluminum-alloy wrought and cast prod-ucts conform toANSI H35.1.Alloys formerly codified by this practice andthe corresponding ANSI designations are shown in Tables X3.1 and X3.2of the Appendix for legacy purposes.NOTE 2The alloy designations n
5、ow being used in Committee B07specifications for magnesium and magnesium-alloy wrought and castproducts conform to Practice B951, as indicated in Appendix X4. Alloydesignations formerly codified by this practice are no longer relevant.1.2 The equivalent Unified Numbering System (UNS) alloydesignatio
6、ns shown in the appendixes are in accordance withPractice E527.2. Referenced Documents2.1 The following documents form a part of this practice tothe extent referenced herein:2.2 ASTM Standards:2B86 Specification for Zinc and Zinc-Aluminum (ZA) AlloyFoundry and Die CastingsB102 Specification for Lead
7、- and Tin-Alloy Die Castings(Withdrawn 2011)3B240 Specification for Zinc and Zinc-Aluminum (ZA) Al-loys in Ingot Form for Foundry and Die CastingsB951 Practice for Codification of Unalloyed Magnesium andMagnesium-Alloys, Cast and WroughtE527 Practice for Numbering Metals and Alloys in theUnified Num
8、bering System (UNS)2.3 ANSI Standard:4H35.1 Alloy and Temper Designation Systems for Alumi-num3. Basis of Codification3.1 The designations for alloys and unalloyed metals arebased on their chemical composition limits.3.2 Designations shall be assigned, revised, and cancelledby Subcommittee B02.04 of
9、 ASTM Committee B02 on Non-ferrous Metals and Alloys on written requests to its chairman.Complete chemical composition limits shall be submitted withrequest for assignment or revision of designations. Arbitraryassignments by other subcommittees or committees will not berecognized.4. Alloys4.1 Design
10、ation for alloys shall consist of not more than twoletters representing the alloying elements (Note 3) specified inthe greatest amount, arranged in order of decreasingpercentages, or in alphabetical order if of equal percentages,followed by the respective percentages rounded off to wholenumbers and
11、a serial letter (Notes 4 and 5). The full name ofthe base metal precedes the designation, but it is omitted forbrevity when the base metal being referred to is obvious.NOTE 3For codification, an alloying element is defined as an element(other than the base metal) having a minimum content greater tha
12、n zeroeither directly specified or computed in accordance with the percentagesspecified.NOTE 4The serial letter is arbitrarily assigned in alphabetical se-quence starting with “A” (omitting “I” and “O”) and serves to differentiateotherwise identical designations. A serial letter is necessary to comp
13、leteeach designation.NOTE 5The designation of a casting alloy in ingot form is derivedfrom the composition specified for the corresponding alloy in the form of1This practice is under the jurisdiction of ASTM Committee B02 on NonferrousMetals and Alloys and is the direct responsibility of Subcommitte
14、e B02.04 on Zincand Cadmium.Current edition approved Dec. 1, 2013. Published January 2014. Originallyapproved in 1962. Last previous edition approved in 2013 as B275 05 (2013).DOI: 10.1520/B0275-13E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servi
15、ce at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available in the Related Materials section (gray pages) of the Annual Book
16、ofASTM Standards, Vol 02.02.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1castings. Thus, a casting ingot designation may consist of an alloydesignation having one or
17、more serial letters, one for each productcomposition, or it may consist of one or more alloy designations.4.2 The letters used to represent alloying elements shall bethose in Table 1.4.3 In rounding percentages, the nearest whole number shallbe used. If two choices are possible as when the decimal i
18、sfollowed by a 5 only, or a 5 followed only by zeros, the nearesteven whole number shall be used.4.4 When a range is specified for the alloying element, therounded mean shall be used in the designation.4.5 When only a minimum percentage is specified for thealloying element, the rounded minimum perce
19、ntage shall beused in the designation.5. Unalloyed Metals5.1 Designations for unalloyed metals consist of the speci-fied minimum purity, all digits retained but dropping thedecimal point, followed by a serial letter (Note 4). The fullname of the base metal precedes the designation, but it isomitted
20、for brevity when the base metal being referred to isobvious.6. Keywords6.1 aluminum; lead; magnesium; tin; UNS designations;zincAPPENDIXES(Nonmandatory Information)X1. EXAMPLES OF CODIFICATIONX1.1 Example 1For Alloy AG40A in Specifications B86and B240, “A” represents aluminum, the alloying elementsp
21、ecified in the greatest amount; “G” represents magnesium,the alloying element specified in the second greatest amount; 4indicates that the rounded mean aluminum percentage liesbetween 3 and 5; 0 signifies the nearest whole number formagnesium percentage; and “A” as the final letter indicates thatthi
22、s is the first alloy qualified and assigned under the designa-tion AG40.X2. DESIGNATIONS FOR METALS AND ALLOYS ASSIGNED IN CONFORMANCE WITH PRACTICE B275, FOR CODIFI-CATION OF CERTAIN NONFERROUS METALS AND ALLOYSX2.1 Designations for metals and alloys assigned in confor-mance with Practice B275, and
23、 the ASTM specifications inwhich they are used, are shown in Table X2.1.TABLE 1 Letters Representing Alloying ElementsAAluminum NNickelBBismuth PLeadCCopper QSilverDCadmium RChromiumERare earths SSiliconFIron TTinGMagnesium VGadoliniumHThorium WYttriumJStrontium XCalciumKZirconium YAntimonyLLithium
24、ZZincMManganeseB275 1312X3. DESIGNATIONS FOR METALS AND ALLOYS FORMERLY ASSIGNED IN CONFORMANCE WITH PRACTICE B275X3.1 Aluminum alloys no longer use the designationsformerly found in Specification B275. Designations givenbelow are for legacy purposes only. Designations assigned inconformance with th
25、is practice were used for wrought alumi-num and wrought aluminum alloys in ASTM specificationsprior to 1960 and for cast aluminum and aluminum alloys andingot prior to 1974 but now designations conforming to theAmerican National Standard Alloys and Temper DesignationSystems for Aluminum (ANSI H35.1)
26、 are standard with theUNS, Practice E527 for information only. The former ASTMdesignations and the corresponding ANSI and UNS designa-tions for wrought alloys are as shown in Table X3.1. Castalloys and ingot are as shown in Table X3.2.TABLE X2.1 Designations Assigned for Nonferrous Metals andAlloys
27、in Conformance with Practice B275Designation ASTM SpecificationsPractice B275 UNS B102 B86 B240Lead alloyY10AYT155AAA.Tin alloyCY44APY1815AYC135AAAA.Zinc alloyAC41A Z35533 .A.AG40A Z33525 .A.AC41A Z35532 . .AAG40A Z33524 . .AAC43A Z35545 .A.AG40B Z33527 .A.AC43A Z35544 . .AAG40B Z33526 . .AAAlloys a
28、ppear in applicable specifications which are found in the Annual Book ofASTM Standards, Vol. 02.04TABLE X3.1 Wrought Aluminum AlloysDesignations DesignationsANSI H35.1FormerB275 63UNS ANSI H35.1FormerB275 63UNS1060 996A A91060 5056 GM50A A950561100 990A A91100 5083 GM41A A950832011 CB60A A92011 5086
29、 GM40A A950862014 CS41A A92014 5154 GR40A A951542017 CM41A A92017 5254 GR40B A952542018 CN42C A92018 5454 GM31A A954542024 CG42A A92024 5456 GM51A A954562117 CG30A A92117 5652 GR20B A956523003 M1A A93003 6053 GS11B A960533004 MG11A A93004 6061 GS11A A960614032 SG121A A94032 6063 GS10A A960635005 G1B
30、 A95005 6101 GS10B A961015050 G1A A95050 7075 ZG62A A970755052 GR20A A95052B275 1313TABLE X3.2 Cast Aluminum Alloys and Aluminum Alloys in Ingot FormADesignations DesignationsANSI H35.1FormerB275 63UNS ANSI H35.1FormerB275 63UNS201.0 CQ51A A02010 380.0 SC84B A03800201.2 CQ51A A02012 380.2 SC84C A038
31、02. CS42AB. A380.0 SC84A A13800208.0 CS43A A02080 A380.1 SC84A-B A13801208.1 CS43A A02081 383.0 SC102A A03830. CS66AC. 383.1 SC102A A03831222.0 CG100A A02220 384.0 SC114A A03840222.1 CG100A A02221 384.1 SC114A A03841. CS72AD. . SC122AC. CS74AC. . SF101AD.238.0ECS104A A02380 413.0 S12B A04130238.1FCS
32、104A A02381 413.2 S12C A04132242.0 CN42A A02420 A413.0 S12A A14130242.1 CN42A A02421 A413.1 S12A-B A14131295.0 C4A A02950 443.0 S5B A04430295.1 C4A A02951 443.1 S5B A04431. SC64AG. 443.2 S5A A04432. SC64BG. A443.0ES5B A14430. SC64CC. A443.1FS5B A14431319.0 SC64D A03190 B443.0 S5A A24430319.1 SC64D A
33、03191 C443.0 S5C A34430328.0 SC82A A03280 C443.1 S5C A34431328.1 SC82A A03281 A444.0 S7A A14440332.0 SC103A A03320 A444.2 S7A A14442332.1 SC103A A03321 512.0EGS42A A05120. SC104AH. 512.2FGS42A A05122333.0 SC94A A03330 . GS31AD.333.1 SC94A A03331 513.0 GZ42A A05130336.0 SN122A A03360 513.2 GZ42A A051
34、32336.1 SN122A A03361 514.0 G4A A05140354.0 SC92A A03540 514.1 G4A A05141354.1 SC92A A03541 518.0 G8A A05180355.0 SC51A A03550 518.1 G8A A05181355.1 SC51A A03551 520.0 G10A A05200355.2 SC51C A03552 520.2 G10A A05202C355.0 SC51B A33550 535.0 GM70B A05350C355.2 SC51B A33552 535.2 GM70B A05352356.0 SC7
35、0A A03560 705.0 ZG32A A07050356.1 SC70A A03561 705.1 ZG32A A07051356.2 SC70C A03562 707.0 ZG42A A07070A356.0 SC70B A13560 707.1 ZG42A A07071A356.2 SC70B A13562 710.0 ZG61B A07100A357.0 SG71A A03570 710.1 ZG61B A07101359.0 SC91A A03590 711.0 ZG60A A07110359.2 SG91A A03592 711.1 ZG60A A07111360.0 SG10
36、0B A03600 712.0 ZG61A A07120360.2 SG100C A03602 712.2 ZG61A A07122A360.0 SG100A A13600 713.0 ZC81A A07130A360.1 SG100A-B A13601 713.1 ZC81B A07131AAlloys appear in applicable specifications in the Annual Book of ASTM Standards, Vol 02.02, except as otherwise noted.BLast appeared in Specification B17
37、9 63.CLast appeared in Specification B179 72.DLast appeared in Specification B179 64.ELast appeared in Specification B108 80.FLast appeared in Specification B179 78.GLast appeared in Specification B179 58.HLast appeared in Specification B179 65.B275 1314X4. UNALLOYED MAGNESIUM AND MAGNESIUM-ALLOYSX4
38、.1 Magnesium alloys no longer use the designationsformerly found in Specification B275. Current designations forunalloyed magnesium and magnesium alloys, cast andwrought, are found in Practice B951.SUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since
39、 the last issue(B275-05(2013) that may impact the use of this standard. (Approved December 1, 2013.)(1) Jurisdiction of Practice B275 was transferred to Subcom-mittee B02.04 from Subcommittee B07.03.(2) Change Scope to only include zinc, tin and lead alloys.(3) Move all references to aluminum to non
40、mandatory Appen-dix.(4) Remove all references to magnesium designations andreference Specification B951 instead.(5) Update UNS numbers in Table X21.1(6) Change example in Appendix X1.1 to an ally remaining inthe standard.ASTM International takes no position respecting the validity of any patent righ
41、ts asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any
42、time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments wil
43、l receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by AST
44、M International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B275 1315
