1、Designation: B 275 05Standard Practice forCodification of Certain Nonferrous Metals and Alloys, Castand Wrought1This standard is issued under the fixed designation B 275; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This practice covers a system origi
3、nally adopted fordesignating light metals and alloys, cast and wrought, and laterextended to certain heavier, base-metal die-casting alloys.Those designations, which are currently being used in specifi-cations under the jurisdiction of Committees B02 on Nonfer-rous Metals and Alloys and B07 on Light
4、 Metals and Alloys,are listed in Table X2.1.1.1.1 The alloy designations now being used in CommitteeB07 specifications for aluminum and 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
5、 X3.1 and X3.2.1.2 This practice also provides a system for designatingmagnesium alloys that have been used commercially since1952, and thus is intended to be the registration source for newmagnesium alloys. A record of designations along with theestablished compositions is given in Table X4.1.1.3 T
6、he equivalent Unified Numbering System (UNS) alloydesignations shown in the appendixes are in accordance withPractice E 527.2. Referenced Documents2.1 The following documents form a part of this practice tothe extent referenced herein:2.2 ASTM Standards:2B37 Specification for Aluminum for Use in Iro
7、n and SteelManufactureB80 Specification for Magnesium-Alloy Sand CastingsB86 Specification for Zinc and Zinc-Aluminum (ZA)AlloyFoundry and Die CastingsB 93/B93M Specification for Magnesium Alloys in IngotForm for Sand Castings, Permanent Mold Castings, andDie CastingsB94 Specification for Magnesium-
8、Alloy Die CastingsB 102 Specification for Lead- and Tin-Alloy Die CastingsB 240 Specification for Zinc and Zinc-Aliminum (ZA) Al-loys in Ingot Form for Foundry and Die CastingsB 327 Specification for Master Alloys Used in Making ZincDie Casting AlloysE 527 Practice for Numbering Metals and Alloys (U
9、NS)2.3 ANSI Standard:3H35.1 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.NOTE 1For aluminum and magnesium alloys, cast and wrought,standard limits for alloying elements and
10、 impurities are expressed to thefollowing places:Less than 0.0001 % (used only for magnesium alloys) 0.0000X0.0001 to 0.001 % 0.000X0.001 to 0.01 % 0.00X0.01 to 0.10 %Unalloyed aluminum made by a refining process 0.0XXAlloys and unalloyed aluminum or magnesium not made bya refining process0.0X0.10 t
11、hrough 0.55 % 0.XXOver 0.55 % 0.X,X.X,XX.X3.2 Designations shall be assigned, revised, and cancelledby Subcommittee B07.07 of ASTM Committee B07 on LightMetals and Alloys on written requests to its chairman. Com-plete chemical composition limits shall be submitted withrequest for assignment or revis
12、ion of designations. Arbitraryassignments by other subcommittees or committees will not berecognized.3.3 The temper designation, which is used for all metalforms, except ingot, follows the alloy designation and isseparated with a dash.1This practice is under the jurisdiction of ASTM Committee B07 on
13、 LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current edition approved July 1, 2005. Published July 2005. Originally approvedin 1962. Last previous edition approved in 2004 as B 275 04.2For referenced ASTM standards, visit the ASTM
14、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.3Available in the Related Materials section (gray pages) of the Annual Book ofASTM Standards, Vol 02.02.1*A
15、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.4. Alloys4.1 Designation for alloys shall consist of not more than twoletters representing the alloying elements (Note 2) s
16、pecified inthe greatest amount, arranged in order of decreasing percent-ages, or in alphabetical order if of equal percentages, followedby the respective percentages rounded off to whole numbersand a serial letter (Notes 3 and 4). The full name of the basemetal precedes the designation, but it is om
17、itted for brevitywhen the base metal being referred to is obvious.NOTE 2For codification, an alloying element is defined as an element(other than the base metal) having a minimum content greater than zeroeither directly specified or computed in accordance with the percentagesspecified.NOTE 3The seri
18、al 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 completeeach designation.NOTE 4The designation of a casting alloy in ingot form is derivedfrom the composi
19、tion specified for the corresponding alloy in the form ofcastings. Thus, a casting ingot designation may consist of an alloydesignation 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 e
20、lements 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 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 elemen
21、t, therounded mean shall be used in the designation.4.5 When only a minimum percentage is specified for thealloying element, the rounded minimum percentage shall beused in the designation.5. Unalloyed Metals5.1 Designations for unalloyed metals consist of the speci-fied minimum purity, all digits re
22、tained but dropping thedecimal point, followed by a serial letter (Note 3). The fullname of the base metal precedes the designation, but it isomitted for brevity when the base metal being referred to isobvious.6. Keywords6.1 aluminum; lead; magnesium; tin; UNS designations;zincAPPENDIXES(Nonmandator
23、y Information)X1. EXAMPLES OF CODIFICATIONX1.1 Example 1For Alloy CG181A in SpecificationB 327, “C” represents copper, the alloying element specified inthe greatest amount; “G” represents magnesium, the alloyingelement specified in the second greatest amount; 18 indicatesthat the rounded mean copper
24、 percentage lies between 17 and19; 1 signifies the nearest whole number for magnesiumpercentage; and “A” as the final letter indicates that this is thefirst alloy qualified and assigned under the designation CG181.X1.2 Example 2For Alloys AZ91A, B, and C, in Speci-fication B 93/B 93M, “A” represents
25、 aluminum, the alloyingelement specified in the greatest amount; “Z” represents zinc,the alloying element specified in the second greatest amount;“9” indicates that the rounded mean aluminum percentage liesbetween 8.6 and 9.4; “1” signifies that the rounded mean of thezinc lies between 0.6 and 1.4;
26、and “A” as the final letterindicates that this is the first alloy whose composition qualifiedassignment of the designation AZ91. The final serial letters Band C signify alloys subsequently developed whose specifiedcompositions differ slightly from the first and from one anotherbut do not differ suff
27、iciently to effect a change in the basicdesignation.X2. DESIGNATIONS FOR METALS AND ALLOYS ASSIGNED IN CONFORMANCE WITH PRACTICE B 275, FORCODIFICATION OF CERTAIN NONFERROUS METALS AND ALLOYSX2.1 Designations for metals and alloys assigned in con-formance with Practice B 275, and the ASTM specificat
28、ions 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 ZZincMManganeseB2750
29、52X3. DESIGNATIONS FOR METALS AND ALLOYS FORMERLY ASSIGNED IN CONFORMANCE WITH PRACTICE B 275X3.1 Designations assigned in conformance with thispractice were used for wrought aluminum and wrought alumi-num alloys in ASTM specifications prior to 1960 and for castaluminum and aluminum alloys and ingot
30、 prior to 1974 butnow designations conforming to the American National Stan-dard Alloys and Temper Designation Systems for Aluminum(ANSI H35.1) are standard with the UNS, Practice E 527 forinformation only. The former ASTM designations and thecorresponding ANSI and UNS designations for wrought alloy
31、sare as shown in Table X3.1. Cast alloys and ingot are as shownin Table X3.2.TABLE X2.1 Designations Assigned for Nonferrous Metals andAlloys in Conformance with Practice B 275Designation ASTM SpecificationsPractice B 275 UNS B37 B 102 B86 B 240 B 327Aluminum alloy850A * . . . .900A * . . . .920A *
32、. . . .950A * . . . .980A * . . . .990A * . . . .CG181A . . . . *G1C . . . . *ZG71A . . . . *Lead alloyY10AYT155A.*.Tin alloyCY44APY1815AYC135A.*.Zinc alloyAC41A Z35531 . . * . .AG40A Z35520 . . * . .AC41A Z35530 . . . * .AG40A Z33521 . . . * .AC43A Z35541 . . * . .AG40B Z33523 . . * . .AC43A Z35540
33、 . . . * .AG40B Z33522 . . . * .* Alloys appear in applicable specifications which are found in the Annual Bookof ASTM Standards, Vol 02.02.TABLE X3.1 Wrought Aluminum AlloysDesignations DesignationsANSI H35.1FormerB27563UNS ANSI H35.1FormerB27563UNS1060 996A A91060 5056 GM50A A950561100 990A A91100
34、 5083 GM41A 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
35、 SG121A A94032 6063 GS10A A960635005 G1B A95005 6101 GS10B A961015050 G1A A95050 7075 ZG62A A970755052 GR20A A95052B275053X4. MAGNESIUM-ALLOY REGISTRATIONX4.1 A registration record of magnesium alloys withestablished designations and chemical composition is shown inTable X4.1.TABLE X3.2 Cast Aluminu
36、m Alloys and Aluminum Alloys in Ingot FormADesignations DesignationsANSI H35.1FormerB27563UNS ANSI H35.1FormerB27563UNS201.0 CQ51A A02010 380.0 SC84B A03800201.2 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
37、. 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 A04130238.1FCS104A A02381 413.2 S12C A04132242.0 CN42A A02420 A413.0 S12A A14130242.1 CN42A A02421 A413.1 S12A-B A14131295.
38、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 A03191 C443.0 S5C A34430328.0 SC82A A03280 C443.1 S5C A34431328.1 SC82A A03281 A444.0 S7A A14440332.0 SC103A A
39、03320 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 A05132336.1 SN122A A03361 514.0 G4A A05140354.0 SC92A A03540 514.1 G4A A05141354.1 SC92A A03541 518.0 G8A A051803
40、55.0 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 SC70A A03560 705.0 ZG32A A07050356.1 SC70A A03561 705.1 ZG32A A07051356.2 SC70C A03562 707.0 ZG42A A07070A356.0
41、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 SG100B A03600 712.0 ZG61A A07120360.2 SG100C A03602 712.2 ZG61A A07122A360.0 SG100A A13600 713.0 ZC81A A07130A360
42、.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 B 179 63.CLast appeared in Specification B 179 72.DLast appeared in Specification B 179 64.ELast appeared in Spe
43、cification B 108 80.FLast appeared in Specification B 179 78.GLast appeared in Specification B 179 58.HLast appeared in Specification B 179 65.B275054TABLEX4.1Magnesium-AlloyRegistrationRecordNOTE1Thesearecastorwroughtproductcompositions(exceptM19XXX)castingingotcompositionsmaybedifferent.Designatio
44、nChemicalComposition,%maxunlessshownasarangeorasaminPrac-ticeB275UNSMagne-siumAlumi-numCal-ciumCop-perGado- liniumIronLithiumMan-ganeseNeod- ymiumNickelRareEarthsSili- conSilverStron-tiumYt-triumZincZirco-niumOtherElementsSpecificEachTo-tal9980AM1998099.80min0.020.100.0010.01Sn,0.01Pb0.059980BM19981
45、99.80min0.020.100.0050.01Sn,0.01Pb0.059990AM1999099.90min0.0030.040.0040.0010.0050.00007B,0.0001Cd0.019995AM1999599.95min0.0100.0030.0040.0010.0050.00003B0.0059998AM1999899.98min0.0040.00050.0020.0020.00050.0030.01Ti,0.00005Cd,0.00003B,0.001Pb0.005AJ52AAM17520remainder4.55.50.0100.004B0.240.6B0.0010
46、.101.72.30.220.01AJ62AAM177620remiander5.56.60.0100.04B0.240.6B0.0010.102.02.80.220.01AM50AM10500remainder4.45.40.0100.004B0.260.6B0.0020.100.220.02AM60AM10600remainder5.56.50.350.130.60.030.500.220.30AM60BM10602remainder5.56.50.0100.005B0.240.6B0.0020.100.220.02.AM100AM10100remainder9.310.70.100.10
47、0.350.010.300.300.30AM100BM10102remainder9.410.60.080.130.350.011.00.30AS21AM10210remainder1.82.50.010.0050.180.70.0010.72.10.200.01AS21BAM10212remainder1.82.50.0080.00350.050.150.0010.060.250.71.20.250.01AS41AM10410remainder3.55.00.060.200.500.030.501.50.120.30AS41BM10412remainder3.55.00.020.00350.
48、350.70.0020.501.50.120.02AZ21AM11210remainder1.62.50.100.250.050.0050.150.0020.050.81.60.30AZ31AM11310remainder2.53.50.300.050.0050.201.00.0050.300.61.40.30AZ31BM11311remainder2.53.50.040.050.0050.201.00.0050.100.61.40.30AZ31CM11312remainder2.43.60.100.151.00.030.100.501.50.30AZ61AM11610remainder5.8
49、7.20.050.0050.150.50.0050.100.401.50.30AZ63AM11630remainder5.36.70.250.150.350.010.302.53.50.30AZ63BM11632remainder5.36.70.020.0030.150.70.0020.102.53.50.30AZ63CM11634remainder5.36.70.050.0030.150.70.0030.302.53.50.30AZ63DM11636remainder5.07.00.100.0030.150.70.0030.302.04.00.30AZ80AM11800remainder7.89.20.050.0050.120.50.0050.100.200.80.30AZ81AM11810remainder7.08.10.100.130.350.010.300.401.00.30AZ91AM11910remainder8.39.70.100.130.500.030.500.351.00.30AZ
