1、Designation: B93/B93M 09B93/B93M 15Standard Specification forMagnesium Alloys in Ingot Form for Sand Castings,Permanent Mold Castings, and Die Castings1This standard is issued under the fixed designation B93/B93M; the number immediately following the designation indicates the year oforiginal adoptio
2、n or, in the case of revision, the year 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.This standard has been approved for use by agencies of the U.S. Department of Defense.N
3、oteTable 1 was corrected editorially and the year date changed on Dec. 7, 2009.1. Scope1.1 This specification covers magnesium alloys in ingot form for remelting for the manufacture of sand castings, permanentmold castings, investment castings, and die castings.NOTE 1Supplementary information pertai
4、ning to the alloys covered by this specification when used in the form of castings is given in SpecificationsB80, B94, B199 and B403.1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in eachsystem are not exact equivalents; ther
5、efore, each system shall be used independently of the other.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicabi
6、lity of regulatorylimitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on date of order acceptance form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B80 Specification for Magnesium-Alloy Sand CastingsB94 Specification f
7、or Magnesium-Alloy Die CastingsB199 Specification for Magnesium-Alloy Permanent Mold CastingsB403 Specification for Magnesium-Alloy Investment CastingsB660 Practices for Packaging/Packing of Aluminum and Magnesium ProductsB666 Practice for Identification Marking of Aluminum and Magnesium ProductsB95
8、1 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and WroughtB953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical AnalysisB954 Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission SpectrometryE29 Practice for Using Signifi
9、cant Digits in Test Data to Determine Conformance with SpecificationsE35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys (Withdrawn 2008)3E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE527 Practice for Numbering Meta
10、ls and Alloys in the Unified Numbering System (UNS)3. Ordering Information3.1 Orders for ingot to this specification shall include the following information:3.1.1 Quantity in pounds (kilograms)1 This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys and is the
11、direct responsibility of Subcommittee B07.04 on MagnesiumAlloy Cast and Wrought Products.Current edition approved Dec. 7, 2009May 1, 2015. Published February 2010May 2015. Originally approved in 1934. Last previous edition approved in 20072009 asB93/B93M 07.B93/B93M 09. DOI: 10.1520/B0093_B0093M-09.
12、 10.1520/B0093_B0093M-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this
13、historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accura
14、tely, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United State
15、s13.1.2 Alloy (Section 4 and Table 1 or Table 2), and3.1.3 Form: as agreed upon between the purchaser and seller. Some forms in commercial use are:Form Approximate Size Length by Widthby Height, in. (mm)ApproximateWeight,lb (kg)Five-segment 23 by 234 by 134 (583 by 70 by 44) 5 (2.3)Four-segment 28 b
16、y 412 by 4 (711 by 114 by 102) 20 (9.1)Self-Palletizing 2612 by 658 by 258 (672 by 168 by 67) 25 (11.3)3.1.4 Inspection required at the manufacturers works (see 8.1).3.1.5 For inch-pound orders specify B93; for metric orders specify B93M. Do not mix units.4. Chemical Composition4.1 The ingots shall
17、conform to the chemical composition limits prescribed in Table 1 for sand cast alloys and permanentmold-cast alloys and in Table 2 for die-cast alloys. Conformance shall be determined by the manufacturer by analyzing samplestaken at the time the ingots are poured or samples taken from the ingots. If
18、 the manufacturer has determined the chemicalcomposition of the material during manufacture, he shall not be required to sample and analyze the ingots.4.2 The alloys shall conform to the chemical composition requirements prescribed in Table 1Tables 1 and 2 and (Notes 2 and3Table 2 (Note 2 and Note 3
19、).NOTE 2Analysis shall regularly be made only for the elements specifically mentioned in the tables. If, however, the presence of other elements issuspected or indicated in the course of routine analysis, further analysis shall be made to determine that the total of these other elements is not in ex
20、cessof the limits specified in the last column of the table.NOTE 3The following applies to all specified limits in the tables: For purposes of acceptance and rejection, an observed value or a calculated valueobtained from analysis shall be rounded off in accordance with the rounding off method of Pr
21、actice E29 to the nearest unit in the last right-hand placeof figures used in expressing the specified limit.5. Workmanship, Finish, and Appearance5.1 The ingots shall be uniform in quality and shall be commercially free of slag or other foreign material.6. Sampling for Chemical Analysis6.1 Sufficie
22、nt samples shall be taken by the manufacturer to ensure conformance to the chemical composition requirement ofthe alloy.6.1.1 Samples may be taken from the molten metal when the ingot is poured or from the ingots. Samples shall be representativeof the material.6.2 In case of dispute, the sampling fo
23、r chemical analysis shall be according to the requirements of Standard Practice E88B953.6.2.1 If the shipment is in less than carload lots and also in the case of magnesium-zirconium alloys, one ingot section shall betaken for sampling for each 2200 lb (1000 kg) or fraction thereof.7. Methods of Che
24、mical Analysis7.1 Any suitable method of chemical analysis may be used. In case of dispute, the analysis shall be made by methods given inTest MethodsASTM Standard Test Method E35B954 or any other standard methods of analysis approved by ASTM unless someother method is agreed upon between the purcha
25、ser and vendor.8. Inspection8.1 If the purchaser desires that inspection be made at the manufacturers works where the material is made, it shall be so statedin the contract or purchase order.8.1.1 If the purchaser elects to have the inspection made at the manufacturers works, the manufacturer shall
26、afford the inspectorrepresenting the purchaser all reasonable facilities to satisfy him that the material is being furnished in accordance with thisspecification.8.1.2 All tests and inspection shall be so conducted as not to interfere unnecessarily with the operation of the works.9. Rejection9.1 Mat
27、erial that does not conform to the requirements of this specification may be rejected and, if rejected, the sellersresponsibility shall be limited to replacing the rejected material. The full weight of the rejected material shall be returned to themanufacturer.10. Product Marking10.1 Identification
28、shall be by stamping with or other suitable marking method, to show the alloy designation as defined in Table1Tables 1 and 2 and Table 2.B93/B93M 152TABLE 1 Chemical Requirements for Alloy Ingot for Remelt to Sand, Permanent Mold and Investment CastingsComposition %AlloyAASTM UNSMag-nesiumAlumi-numC
29、opper,maxGadol-iniumIron,maxLithium,maxManga-neseNeody-miumNickel,maxRareEarthsSilicon,max Silver Yttrium ZincZir-coniumOtherseach,maxBTotalOthers,maxBAM100A M10101 remainder 9.410.6 0.08 . . . 0.130.35 . 0.010 . 0.20 . . 0.2 max . . 0.30AZ63A M11631 remainder 5.56.5 0.20 . . . 0.150.35 . 0.010 . 0.
30、20 . . 2.73.3 . . 0.30AZ81A M11811 remainder 7.28.0 0.08 . . . 0.150.35 . 0.010 . 0.20 . . 0.50.9 . . 0.30AZ91C M11915 remainder 8.39.2 0.08 . . . 0.150.35 . 0.010 . 0.20 . . 0.450.9 . . 0.30AZ91E M11918 remainder 8.39.2 0.015 . 0.005 . 0.170.50 . 0.0010 . 0.20 . . 0.450.9 . 0.01 0.30AZ92A M11921 re
31、mainder 8.59.5 0.20 . . . 0.130.35 . 0.010 . 0.20 . . 1.72.3 . . 0.30EQ21A M18330 remainder . 0.050.10 . . . . . 0.01 1.53.0C 0.01 1.31.7 . . 0.31.0 . 0.30EV31AD M12311 remainder . 0.01 1.01.7 0.010 . . 2.63.1 0.0020 0.4E . 0.05 max . 0.200.50 0.31.0 0.01 .EZ33A M12331 remainder . 0.03 . . . . . 0.0
32、10 2.63.9F 0.01 . . 2.03.0 0.31.0 . 0.30K1A M18011 remainder . 0.03 . . . . . 0.010 . 0.01 . . . 0.31.0 . 0.30QE22A M18221 remainder . 0.03 . . . 0.15 max . 0.010 1.92.4C 0.01 2.03.0 . 0.2 max 0.31.0 . 0.30WE43A M18431 remainder . 0.03 . 0.18 0.15 max 2.02.5 0.005 1.9G 0.01 . 3.74.3 0.20 max 0.31.0
33、. 0.30WE43A M18431 remainder . 0.03 . 0.18 0.15 max 2.02.5 0.005 1.9G 0.01 . 3.74.3 0.20 max 0.31.0 . 0.30WE43B M18433 remainder . 0.01 . . 0.18 0.03 max 2.02.5 0.004 1.9G . .H 3.74.3 .H 0.31.0 0.01 .WE43B M18433 remainder . 0.01 . . 0.18 0.03 max 2.02.5 0.004 1.9G . .H 3.74.3 .H 0.31.0 0.01 .WE54A
34、M18410 remainder . 0.03 . . 0.20 0.15 max 1.52.0 0.005 2.0G 0.01 . 4.755.5 0.20 max 0.31.0 . 0.30WE54A M18410 remainder . 0.03 . . 0.20 0.15 max 1.52.0 0.005 2.0G 0.01 . 4.755.5 0.20 max 0.31.0 . 0.30ZC63A M16331 remainder . 2.43.00 . . . 0.250.75 . 0.001 . 0.20 . . 5.56.5 . . 0.30ZE41A M16411 remai
35、nder . 0.03 . . . 0.15 max . 0.010 1.01.75F 0.01 . . 3.74.8 0.31.0 . 0.30ZK51A M16511 remainder . 0.03 . . . . . 0.010 . 0.01 . . 3.85.3 0.31.0 . 0.30ZK61A M16611 remainder . 0.03 . . . . . 0.010 . 0.01 . . 5.76.3 0.31.0 . 0.30A These alloy designations were established in accordance with Practice B
36、951. UNS designations were established in accordance with Practice E527.B Includes listed elements for which no specific limit is shown.C Rare earth elements are in the form of Didymium, not less than 70 % Neodymium balance substantially Praseodymium.D Alloy EV31A is a patented composition, suitable
37、 for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTMInternational. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may at
38、tend.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
39、such rights,are entirely their own responsibility.E Other Rare Earths may also be present to a total maximum of 0.4 %. These Rare Earths shall principally be Cerium, Lanthanum, and Praseodymium.FTotal Rare Earths (TRE) are principally a mixture of Cerium, Lanthanum, Neodymium, and Praseodymium. The
40、Cerium content should not be less than 45%45 % of TRE.GOther Rare Earths shall be principally heavy rare earths, such as, Gadolinium, Dysprosium, Erbium, and Ytterbium. Other Rare Earths are derived from the Yttrium, typically 80 %, and 20 % heavy rare earths.H Zinc + Silver shall be 0.15 % max.Edit
41、orially corrected.B93/B93M15311. Packaging and Package Marking11.1 Ingots shall be packaged in such a manner as to prevent damage in ordinary handling and transportation. The type ofpacking and gross weight of individual containers or bundles shall be left to the discretion of the supplier unless ot
42、herwise agreedupon. Packaging methods shall be so selected as to permit maximum utility of equipment in unloading and subsequent handling.Each container or bundle shall contain only one size and alloy when packaged for shipment unless otherwise agreed upon.11.2 Each package shall be marked with the
43、purchase order number, quantity, specification number, alloy, gross or net weights,and the name of the manufacturer.11.2.1 Each package shall be color-coded on two opposite corners, visible from four sides, with the colors listed in Table 3 whenstated as a purchase order requirement.11.3 Packages sh
44、all be such as to ensure acceptance by common or other carriers for safe transportation at the lowest rate tothe point of delivery.TABLE 2 Chemical Requirements for Alloys Used for Die CastingsAAlloy Composition, %Designa-tionB UNSMagnesiumAlumi-num BerylliumCopper,maxIron,maxManga-neseNickel,maxRar
45、eEarth Silicon Strontium ZincOtherMetallicimpuri-ties, maxeachCOtherImpuri-ties,maxAS41A M10411remainder 3.74.8 . 0.04 . 0.220.48 0.01 . 0.601.4 . 0.10 max . 0.30AS41B M10413remainder 3.74.8 0.0005-0.00150.015 0.0035 0.350.6 0.001 . 0.601.4 . 0.10 max 0.01 .AM50A M10501remainder 4.55.3 0.0005-0.0015
46、0.008 0.004 0.280.50 0.001 . 0.08 max . 0.20 max 0.01 .AM60A M10601remainder 5.66.4 . 0.25 . 0.150.50 0.01 . 0.20 max . 0.20 max . 0.30AM60B M10603remainder 5.66.4 0.0005-0.00150.008 0.004 0.260.50 0.001 . 0.08 max . 0.20 max 0.01 .AZ91A M11911remainder 8.59.5 . 0.08 . 0.150.40 0.01 . 0.20 max . 0.4
47、50.9 . 0.30AZ91B M11913remainder 8.59.5 . 0.25 . 0.150.40 0.01 . 0.20 max . 0.450.9 . 0.30AZ91D M11917remainder 8.59.5 0.0005-0.00150.025 0.004 0.170.40 0.001 . 0.08 max . 0.450.9 0.01 .AJ52AD M17521remainder 4.65.5 0.0005-0.00150.008 0.004 0.260.5 0.001 . 0.08 max 1.82.3 0.20 max 0.01 .AJ62AD M1762
48、1remainder 5.66.6 0.0005-0.00150.008 0.004 0.260.5 0.001 . 0.08 2.12.8 0.20 max 0.01 .AS21A M10211remainder 1.92.5 0.0005-0.00150.008 0.004 0.20.6 0.001 . 0.71.2 . 0.20 max 0.01 .AS21BD M10213remainder 1.92.5 0.0005-0.00150.008 0.0035 0.050.15 0.001 0.060.25 0.71.2 . 0.25 max 0.01 .A The following a
49、pplies to all specified limits in this table; for purposes of acceptance and rejection, an observed value or a calculated value obtained from analysis shouldbe rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit in accordance with the rounding-off procedure prescribedin Practice E29.B ASTM alloy designations were established in accordance with Practice B951. UNS Numbers were established in accordance with Pra
