1、Designation: B275 13Standard 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 la
2、st 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.1. Scope*1.1 This practice covers a system for
3、 designating die-castingalloys of zinc, tin and lead. Those designations currently beingused in specifications under the jurisdiction of Committees B02on Nonferrous Metals and are listed in Appendix Table X2.1.1.1.1 The alloy designations now being used in CommitteeB07 specifications for aluminum an
4、d aluminum-alloy wroughtand cast products conform to ANSI H35.1. Alloys formerlycodified by this practice and the corresponding ANSI designa-tions are shown in Tables X3.1 and X3.2 of the Appendix forlegacy purposes.1.1.2 The alloy designations now being used in CommitteeB07 specifications for magne
5、sium and magnesium-alloywrought and cast products conform to Practice B951,asindicated in Appendix X4. Alloy designations formerly codi-fied by this practice are no longer relevant.1.2 The equivalent Unified Numbering System (UNS) alloydesignations shown in the appendixes are in accordance withPract
6、ice 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for Zinc and Zinc-Aluminum (ZA) AlloyFoundry and Die CastingsB102 Specification for Lead- and Tin-Alloy Die Castings(Withdrawn 2011)3B240 Spec
7、ification for Zinc and Zinc-Aluminum (ZA) Al-loys in Ingot Form for Foundry and Die CastingsB327 Specification for Master Alloys Used in Making ZincDie Casting AlloysB951 Practice for Codification of Unalloyed Magnesium andMagnesium-Alloys, Cast and WroughtE527 Practice for Numbering Metals and Allo
8、ys in theUnified Numbering 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 Su
9、bcommittee B02.04 of 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
10、.4. Alloys4.1 Designation for alloys shall consist of not more than twoletters representing the alloying elements (Note 1) specified inthe greatest amount, arranged in order of decreasingpercentages, or in alphabetical order if of equal percentages,followed by the respective percentages rounded off
11、to wholenumbers and a serial letter (Notes 2 and 3). The full name ofthe base metal precedes the designation, but it is omitted forbrevity when the base metal being referred to is obvious.NOTE 1For codification, an alloying element is defined as an element(other than the base metal) having a minimum
12、 content greater than zeroeither directly specified or computed in accordance with the percentagesspecified.NOTE 2The serial letter is arbitrarily assigned in alphabetical se-quence starting with “A” (omitting “I” and “O”) and serves to differentiate1This practice is under the jurisdiction of ASTM C
13、ommittee B02 on NonferrousMetals and Alloys and is the direct responsibility of Subcommittee 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/B0275-13.2For refere
14、nced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service 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 onw
15、ww.astm.org.4Available in the Related Materials section (gray pages) of the Annual Book 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 States1other
16、wise identical designations. A serial letter is necessary to completeeach designation.NOTE 3The designation of a casting alloy in ingot form is derivedfrom the composition specified for the corresponding alloy in the form ofcastings. Thus, a casting ingot designation may consist of an alloydesignati
17、on having one or 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 w
18、hen the decimal isfollowed 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 roun
19、ded minimum percentage 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 2). The fullname of the base metal precedes the designation,
20、but it isomitted 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 a
21、lloying elementspecified 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
22、indicates thatthis 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 P
23、ractice B275, and 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 Y
24、AntimonyLLithium ZZincMManganeseB275 132X3. 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 incon
25、formance with this 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 Alumi
26、num (ANSI H35.1) 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 M
27、etals andAlloys in Conformance with Practice B275Designation ASTM SpecificationsPractice B275 UNS B102 B86 B240 B327Lead alloyY10AYT155AAA.Tin alloyCY44APY1815AYC135AAAA.Zinc alloyAC41A Z35533 .A. .AG40A Z33525 .A. .AC41A Z35532 . .A.AG40A Z33524 . .A.AC43A Z35545 .A. .AG40B Z33527 .A. .AC43A Z35544
28、 . .A.AG40B Z33526 . .A.AAlloys appear 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 G
29、M41A A950832011 CB60A A92011 5086 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
30、 A94032 6063 GS10A A960635005 G1B A95005 6101 GS10B A961015050 G1A A95050 7075 ZG62A A970755052 GR20A A95052B275 133TABLE 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
31、.2 CQ51A A02012 380.2 SC84C A03802. 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
32、A02380 413.0 S12B A04130238.1FCS104A 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 A0319
33、0 B443.0 S5A A24430319.1 SC64D A03191 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.
34、0 SN122A A03360 513.2 GZ42A A05132336.1 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 A3
35、3552 535.2 GM70B A05352356.0 SC70A 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 A03
36、592 711.1 ZG60A A07111360.0 SG100B 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.BLa
37、st appeared in Specification B179 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 134X4. UNALLOYED M
38、AGNESIUM AND MAGNESIUM-ALLOYSX4.1 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
39、 changes to this standard since 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 al
40、l references to aluminum to nonmandatory 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
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