1、Designation: B 951 09Standard Practice forCodification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought1This standard is issued under the fixed designation B 951; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This practice provides a system for designating unal-loyed magnesium and magnesium-alloys that have been usedcom
3、mercially since 1952, and thus is intended to be theregistration source for unalloyed magnesium and magnesium-alloys. A record of designations along with the establishedcompositions is given in Table 2.1.2 The equivalent Unified Numbering System (UNS) alloydesignations shown in the appendixes are in
4、 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:2B80 Specification for Magnesium-Alloy Sand CastingsB 90/B 90M Specification for Magnesium-Alloy Sheet andPlateB91 Specification for Magnes
5、ium-Alloy ForgingsB 92/B 92M Specification for Unalloyed Magnesium Ingotand Stick For RemeltingB 93/B 93M Specification for Magnesium Alloys in IngotForm for Sand Castings, Permanent Mold Castings, andDie CastingsB94 Specification for Magnesium-Alloy Die CastingsB 107/B 107M Specification for Magnes
6、ium-Alloy Ex-truded Bars, Rods, Profiles, Tubes, and WireB 199 Specification for Magnesium-Alloy Permanent MoldCastingsB 403 Specification for Magnesium-Alloy Investment Cast-ingsB 843 Specification for Magnesium Alloy Anodes for Ca-thodic ProtectionE 527 Practice for Numbering Metals and Alloys in
7、theUnified Numbering System (UNS)3. Basis of Codification3.1 The designations for alloys and unalloyed metals arebased on their chemical composition limits.NOTE 1For unalloyed magnesium, magnesium-alloys, cast andwrought, standard limits for alloying elements and impurities are ex-pressed to the fol
8、lowing 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 magnesiumnot made by a refining process0.0X0.10 through 0.55 % 0.XXOver 0.55 % 0.X,X
9、.X,XX.X3.2 Designations shall be assigned, revised, and cancelledby Subcommittee B07.04 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 revision of designations. Arbitraryassig
10、nments by other subcommittees or committees will not berecognized.4. Alloys4.1 Designation for alloys shall consist of not more than twoletters representing the alloying elements (Note 2) specified inthe greatest amount, arranged in order of decreasing percent-ages, or in alphabetical order if of eq
11、ual percentages, followedby the respective percentages rounded off to whole numbersand a serial letter (Notes 3). The full name of the base metalprecedes the designation, but it is omitted for brevity when thebase metal being referred to is obvious.NOTE 2For codification, an alloying element is defi
12、ned as an element(other than the base metal) having a minimum content greater than zeroeither directly specified or computed in accordance with the percentagesspecified.1This practice is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcom
13、mittee B07.04 onMagnesium Alloy Cast and Wrought Products.Current edition approved June 1, 2009. Published July 2009. Originally approvedin 2007. Last previous edition approved in 2008 as B 951 08.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service a
14、t serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*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 19428-295
15、9, United States.NOTE 3The 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 completeeach designation.4.2 The letters used to represent the greater of t
16、he twoalloying elements shall be those 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 th
17、e 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 percentage shall beused in the designation.5. Unalloyed Metals5.1 Designations for unalloyed metals consist of the speci-fied minimum puri
18、ty, all digits retained 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 magnesium; UNS designationsTABLE 1 Letters Representing Al
19、loying ElementsAAluminum QSilverCCopper SSiliconERare earths TTin*HThorium* VGadoliniumJStrontium WYttriumKZirconium ZZincLLithium* *For historical referenceMManganeseB951092TABLE 2 Unalloyed Magnesium and Magnesium-Alloy Registration(A Registration Record of Magnesium Alloys with Established Design
20、ations and Chemical Composition)NOTECast or wrought product compositions may differ from casting ingot compositions.Designation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareE
21、arthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each Total9980A M19980 B 92/B 92M 99.80min0.02 0.10 0.001 0.01 Sn0.01 Pb0.006 Na0.059980B M19991 B 92/B 92M 99.80min0.02 0.10 0.005 0.01 Sn0.01 Pb0.059990AAM19990 B 92/B 92M 99.90min0.003 0.04 0.004 0.001 0.005 0.019995AAM199
22、95 B 92/B 92M 99.95min0.01 0.003 0.004 0.001 0.005 0.01 Ti 0.0059998AAM19998 B 92/B 92M 99.98min0.004 0.0005 0.002 0.002 0.0005 0.003 0.001 Ti0.00003 B0.001 Pb0.005AJ52ABM17520 B94C4.5-5.50.010 0.004D0.24-0.6D0.001 0.10 1.7-2.30.22 0.01AJ52ABEM17521 B 93/B 93MC4.6-5.50.008 0.004 0.25-0.50.001 0.08 1
23、.8-2.30.20 0.01AJ62ABM17620 B94C5.5-6.60.010 0.004D0.24-0.6D0.001 0.10 2.0-2.80.22 0.01AJ62ABEM17621 B 93/B 93MC5.6-6.60.008 0.004 0.26-0.050.001 0.08 2.1-2.80.20 0.01AM50A M10500 B94C4.4-5.40.010 0.004D0.26-0.6D0.002 0.10 0.22 0.02AM50AEM10501 B 93/B 93MC4.5-5.30.008 0.004 0.28-0.500.001 0.08 0.22
24、0.01AM60A M10600 B94C5.5-6.50.35 0.13-0.60.03 0.50 0.22AM60A M10601 B 93/B 93MC5.6-6.40.25 0.15-0.500.01 0.20 0.20 0.30AM60B M10602 B94C5.5-6.50.010 0.005D0.24-0.6D0.002 0.10 0.22 0.02AM60BEM10603 B 93/B 93MC5.6-6.40.008 0.004 0.26-0.500.001 0.10 0.20 0.01AM100A M10100 B80B 199B 403C9.3-10.70.10 0.1
25、0-0.350.01 0.30 0.30 0.30AM100A M10101 B 93/B 93MC9.4-10.60.08 0.13-0.350.010 0.20 0.2 0.30AS21A M10210 B94C1.8-2.50.01 0.005 0.18-0.70.001 0.7-1.2 0.20 0.01AS21AEM10211 B 93/B 93MC1.9-2.50.008 0.004 0.2-0.6 0.001 0.7-1.2 0.20 0.01AS21BBM10212 B94C1.8-2.50.008 0.0035 0.05-0.150.001 0.06-0.250.7-1.2
26、0.25 0.01AS21BBEM10213 B 93/B 93MC1.9-2.50.008 0.0035 0.05-0.150.001 0.06-0.250.7-1.2 0.25 0.01AS41A M10410 B94C3.5-5.00.06 0.20-0.500.03 0.50-1.50.12B951093TABLE 2 ContinuedDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Coppe
27、r Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalAS41A M10411 B 93/B 93MC3.7-4.80.04 0.22-0.480.01 0.60-1.40.10 0.30AS41B M10412 B94C3.5-0.7D0.02 0.0035D0.35-0.70.002 0.50-1.50.12 0.02AS41BEM10413 B 93/B 93
28、MC3.7-4.80.015 0.0035 0.35-0.60.001 0.60-1.40.10 0.01AZ31B M11311 B 90/B 90MB91B 107/B 107MB 843C2.5-3.50.04 0.05 0.005 0.20-1.00.005 0.10 0.6-1.4 0.30AZ31C M11312 B 107/B 107MC2.4-3.60.10 0.15-1.0F0.03 0.10 0.50-1.5 0.30AZ31D M11313 B 843C2.5-3.50.04 0.04 0.002 0.20-1.00.0010 0.05 0.6-1.4 0.01 0.30
29、AZ61A M11610 B91B 107/B 107MC5.8-7.20.05 0.005 0.15-0.50.005 0.10 0.40-1.5 0.30AZ63A M11630 B80C5.3-6.70.25 0.15-0.350.01 0.30 2.5-3.5 0.30AZ63A M11631 B 93/B 93MC5.5-6.50.20 0.15-0.350.010 0.20 2.7-3.3 0.30AZ63B M11632 B 843C5.3-6.70.02 0.003 0.15-0.70.002 0.10 2.5-3.5 0.30AZ63C M11634 B 843C5.3-6.
30、70.05 0.003 0.15-0.70.003 0.30 2.5-3.5 0.30AZ63D M11636 B 843C5.0-7.00.10 0.003 0.15-0.70.003 0.30 2.0-4.0 0.30AZ80A M11800 B91B 107/B 107MC7.8-9.20.05 0.005 0.12-0.50.005 0.10 0.20-0.8 0.30AZ81A M11810 B80B 199B 403C7.0-8.10.10 0.13-0.350.01 0.30 0.40-1.0 0.30AZ81A M11811 B 93/B 93MC7.2-8.00.08 0.1
31、5-0.350.010 0.20 0.5-0.9 0.30AZ91A M11910 B94C8.3-9.70.10 0.13-0.500.03 0.50 0.35-1.0AZ91A M11911 B 93/B 93MC8.5-9.50.08 0.15-0.400.01 0.20 0.45-0.9 0.30AZ91B M11912 B94C8.3-9.70.35 0.13-0.500.03 0.50 0.35-1.0AZ91B M11913 B 93/B 93MC8.5-9.50.25 0.15-0.400.01 0.20 0.45-0.9 0.30AZ91C M11914 B80B 199B
32、403C8.1-9.30.10 0.13-0.350.01 0.30 0.40-1.0 0.30AZ91C M11915 B 93/B 93MC8.3-9.20.08 0.15-0.350.010 0.20 0.45-0.9 0.30AZ91D M11916 B94C8.3-9.70.030 0.005D0.15-0.50D0.002 0.10 0.35-1.0 0.02B951094TABLE 2 ContinuedDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSe
33、eASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalAZ91DEM11917 B 93/B 93MC8.5-9.50.025 0.004 0.17-0.400.001 0.08 0.45-0.9 0.01AZ91E M11919 B80B 199B 403C8.1-9.30.015 0.00
34、5G0.17-0.350.0010 0.20 0.40-1.0 0.01 0.30AZ91E M11918 B 93/B 93MC8.3-9.20.015 0.005 0.17-0.500.0010 0.20 0.45-0.9 0.01 0.30AZ92A M11920 B80B 199C8.3-9.70.25 0.10-0.350.01 0.30 1.6-2.4 0.0AZ92A M11920 B 403C8.3-9.70.10 0-0.35 0.01 0.30 1.6-2.4 0.30AZ92A M11921 B 93/B 93MC8.5-9.50.20 0.13-0.350.010 0.
35、20 1.7-2.3 0.30AZ101AHM11101C9.5-10.50.05 0.005 0.13-0.050.005 0.05 0.75-1.250.30EQ21A M18330 B80B 199B 403C0.05-0.100.01 1.5-3.0I1.3-1.7 0.40-1.00.30EQ21A M18330 B 93/B 93MC0.05-0.100.01 1.5-3.0I0.01 1.3-1.7 0.30-1.00.0EV31AJM12310 B80C0.01 1.0-1.70.010 2.6-3.1 0.0020 0.4K0.05 0.20-0.500.40-1.00.01
36、EV31AJM12311 B 93/B 93MC0.01 1.0-1.70.010 2.6-3.1 0.0020 0.4K0.05 0.20-0.500.3-1.00.01EZ33A M12330 B80B 199B 403C0.10 0.01 2.5-4.0L2.0-3.1 0.50-1.00.30EZ33A M12331 B 93/B 93MC0.03 0.010 2.6-3.9L0.01 2.0-3.0 0.3-1.00.30K1A M18010 B80B 403C0.40-1.00.30K1A M18011 B 93/B 93MC0.03 0.010 0.01 0.30-1.00.30
37、M1A M15100 B 107/B 107MC0.30 0.05 1.2-2.0 0.01 0.10 0.30M1C M15102 B 843C0.01 0.02 0.03 0.50-1.30.001 0.05 0.05 0.30QE22A M18220 B80B 199B 403C0.10 0.01 1.8-2.5I2.0-3.0 0.40-1.00.30QE22A M18221 B 93/B 93MC0.03 0.15 0.010 1.9-2.4I0.01 2.0-3.0 0.2 0.30-1.00.0WE54A M18410 B80C0.03 0.2 0.03 1.5-2.0 0.00
38、5 2.0M0.01 4.75-5.5 0.20 0.3-1.00.20 0.30WE54A M18410 B 93/B 93MC0.03 .20 0.15 1.5-2.0 0.005 2.0M0.01 4.75-5.5 0.20 0.3-1.00.30WE54A M18410 B 107/B 107MC0.03 0.2 0.03 1.5-2.0 0.005 2.0M0.01 4.75-5.5 0.20 0.40-1.00.2WE43A M18430 B80C0.03 0.01 0.2 0.15 2.0-2.5 0.005 1.9M0.01 3.7-4.3 0.20 0.40-1.00.2WE
39、43A M18431 B 93/B 93MC0.03 0.18 0.15 2.0-2.5 0.005 1.9M0.01 3.7-4.3 0.20 0.3-1.00.30B951095TABLE 2 ContinuedDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSil
40、icon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalWE43B M18432 B80C0.02 0.010 0.2 0.03 2.0-2.5 0.005 1.9MN3.7-4.3 0.20N0.40-1.00.01WE43B M18432 B 107/B 107MC0.02 0.010 0.2 0.03 2.0-2.5 0.005 1.9 3.7-4.3N0.40-1.00.01WE43B M18433 B 93/B 93MC0.01 0.18 0.03 2.0-2.5 0.004 1.9MN
41、3.7-4.3N0.3-1.00.01ZC63A M16331 B80C2.4-3.00.25-0.750.01 0.20 5.5-6.5 0.30ZC63A M16331 B 93/B 93MC2.4-3.000.25-0.750.001 0.20 5.5-6.5 0.30ZE41A M16410 B80B 403C0.10 0.15 0.01 0.75-1.75L3.5-5.0 0.40-1.00.30ZE41A M16411 B 93/B 93MC0.03 0.15 0.01 1.0-1.75L0.01 3.7-4.8 0.30-1.00.30ZE63A M16631 B 93/B 93
42、MC0.03 0.010 2.0-3.00.01 5.5-6.0 0.3-1.00.30ZK40A M16400 B 107/B 107MC3.5-4.5 0.45min0.30ZK51A M16510 B80C0.10 0.01 3.6-5.5 0.50-1.00.30ZK51A M16511 B 93/B 93MC0.03 0.010 0.01 3.8-5.3 0.3-1.00.30ZK60A M16600 B91B 107/B 107MC4.8-6.2 0.45min0.30ZK61A M16610 B80B 403C0.10 0.01 5.5-6.5 0.6-1.00.30ZK61A
43、M16611 B 93/B 93MC0.03 0.010 0.01 5.7-6.3 0.3-1.00.30AFor nuclear applications the cadmium and boron (high-capture cross-section elements) shall be specified as follows:Cadmium, max, % 0.0001 or 0.00005Boron, max, % 0.00007 or 0.00003BAlloysAJ52A,AJ62A, andAS21B are patented compositions for elevate
44、d temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositionsto ASTM International. your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. ASTM I
45、nternational takes no position respecting the validity of anypatent rights asserted in connection with any item mentioned in this specification. Users of this specification are expressly advised that determination of the validity of any such patent rights, and the risk of infringementof such rights,
46、 are entirely their own responsibility.CRemainder.DFor alloys AS41B, AM50A, AJ52A, AM60B, AJ62A, and AZ91D, if either the minimum Manganese or maximum Iron content is not met, then the permissible Iron to Manganese ratio shall not exceed 0.010, 0.015,0.021, and 0.032, respectively.EBeryllium 0.0005
47、0.0015.FManganese minimum limit need not be met if Iron is 0.005 % or less.GIf the iron content exceeds 0.005 %, the Iron to Manganese ratio shall not exceed 0.032 for AZ91E alloy.HRod for welding AZ91 and AZ92 alloys.IRare earth elements are in the form of Didymium, with not less than 70 % Neodymiu
48、m and remainder substantially Praesodymium.JAlloy EV31A is a patented composition, suitable for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTMInternational. Comments will receive caref
49、ul consideration at a meeting of the responsible technical committee, which you may attend. ASTM International takes no position respecting the validity of any patent rightsasserted in connection with any item mentioned in this specification. Users of this specification are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights,are entirely their own responsibility.KOther Rare Earths may also be present to a total maximum of 0.4 %. These Rare Earths shall principally be Cerium, Lanthanum, and
