1、Designation: B 403 07Standard Specification forMagnesium-Alloy Investment Castings1This standard is issued under the fixed designation B 403; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pa
2、rentheses 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 specification covers magnesium-alloy investmentcastings des
3、ignated as shown in Table 1.1.2 Alloy designations are in accordance with PracticeE 527; temper designations are in accordance with PracticeB 296.1.3 The values stated in inch-pound units are to be regardedas the standard. The SI values in parentheses are for informa-tion only.2. Referenced Document
4、s2.1 The following documents of the issue in effect on thedate of order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 296 Practice for Temper Designations of MagnesiumAlloys, Cast and WroughtB 557 Test Methods for Tension Testing Wrought and CastAl
5、uminum- and Magnesium-Alloy ProductsB 660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB 661 Practice for Heat Treatment of Magnesium AlloysB 666/B 666M Practice for Identification Marking of Alu-minum and Magnesium ProductsB 951 Practice for Codification of Unalloyed Magnesiuman
6、d Magnesium-Alloys, Cast and WroughtD 3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE35 Test Methods for Chemical Analysis of Magnesiumand Magnesium AlloysE88 Practice for Sampling Nonferrous Metals and Alloysi
7、n Cast Form for Determination of Chemical CompositionE94 Guide for Radiographic ExaminationE 155 Reference Radiographs for Inspection of Aluminumand Magnesium CastingsE 165 Test Method for Liquid Penetrant ExaminationE 527 Practice for Numbering Metals and Alloys (UNS)2.3 Federal Standards:Fed. Std.
8、 No. 123 Marking for Shipping (Civil Agencies)32.4 Military Standards:MIL-STD-129 Marking for Shipment and Storage (MilitaryAgencies)33. Ordering Information3.1 Orders for castings under this specification shall includethe following information:3.1.1 Quantity of each casting,3.1.2 Alloy (Section 6 a
9、nd Table 1),3.1.3 Temper (see 5.1 and Table 2),3.1.4 Casting drawing giving all necessary dimensions andshowing amount of finish left for machining,3.1.5 Surface treatment (see 10.1),3.1.6 Whether certification is required (see 11.1),3.1.7 Whether inspection is required at the manufacturersworks (se
10、e 12.1), and3.1.8 Special inspection requirements (see 12.3).4. Materials and Manufacture4.1 The responsibility for furnishing castings that can belaid out and machined to the finished dimensions within thepermissible variations specified, as shown on the drawings,shall rest with the manufacturer, e
11、xcept where mold equipmentis furnished by the purchaser. Sufficient stock shall be allowedfor shrinkage and, where required, for finishing; but castings ofexcessive weight shall not be furnished.5. Treatment5.1 The castings may be subjected to such heat treatment asthe manufacturer desires to produc
12、e material that will conform1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.04 onMagnesium Alloy Cast and Wrought Products.Current edition approved June 1, 2007. Published July 2007. Originally approve
13、din 1963. Last previous edition approved in 2002 as B 403 02.2For referenced 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.
14、3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho
15、cken, PA 19428-2959, United States.to the requirements specified. Heat treatment shall be per-formed on the whole of the casting, never on a part only, andshall be applied in a manner that will produce uniformity.Unless otherwise specified, treatment shall be in accordancewith Practice B 661.6. Chem
16、ical Composition6.1 The castings shall conform to the chemical compositionlimits in Table 1.6.2 The chemical analysis shall be made in accordance withTest Methods E35, or by any other approved methods agreedupon by the manufacturer and the purchaser. The analysis maybe made spectrochemically provide
17、d that, in case of disagree-ment, the results secured by Test Methods E35shall be thebasis for acceptance.6.3 The sampling shall be in accordance with Practice E88.7. Tensile Properties7.1 LimitsThe tension test specimens representing thecastings shall conform to the requirements for tensile proper-
18、ties prescribed in Table 2.7.2 Number of Tests:7.2.1 At least two tension test specimens shall be cast fromeach melt of 2000 lb (907 kg) or fraction thereof to representthe castings poured from the same melt. If the castings are tobe heat treated, the specimens shall be heat treated withproduction c
19、astings of the same alloy and in the same temperas the specimens.7.2.2 Each heat-treating furnace charge shall include at leasttwo tension test specimens poured from a production melt.Such specimens shall be of the same alloy and in the sametemper as the castings, and shall be tested to judge the qu
20、alityof the heat-treating operation given the furnace charge.7.3 Test Specimens:7.3.1 The tension test specimens shall be separately cast inthe same refractory material as the castings. The specimenshould be “cast to size” according to the dimensions of the0.250-in. (6.35-mm) diameter round specimen
21、 shown in Fig. 8of Test Methods B 557. They shall not be machined prior to testexcept to adapt the grip ends to the holders of the testingmachine to assure axial loading.7.3.2 If any tension test specimen is improperly machinedor shows flaws upon testing, it may be discarded and anotherspecimen from
22、 the same heat or melt used instead. If noadditional specimen is available, the manufacturer and thepurchaser shall agree on an alternative procedure.7.4 Test MethodsThe tension tests shall be made inaccordance with Test Methods B 557.8. Retests8.1 If any test specimen fails to conform to the prescr
23、ibedrequirements, two additional representative specimens shall beselected and tested. If either of these specimens fails toconform to the requirements, the lot may be rejected. If,however, the specimen failure is due to inadequate thermaltreatment, the material may be reheat-treated and resampled i
24、naccordance with 7.2. Castings may be reheat-treated no morethan twice.9. General Quality9.1 The castings shall be of uniform quality and condition,free from cracks and other injurious defects, and shall becleaned before inspection by blasting or other approved pro-cess.9.2 Castings shall not be rep
25、aired by welding, impregnation,peening, or other method without permission of the purchaser.TABLE 1 Chemical Composition LimitsANOTE 1Analysis shall regularly be made for the elements specifically mentioned in this table. If, however, the presence of other elements is suspectedor indicated in amount
26、s greater than the specified limits, further analysis shall be made to determine that these elements are not present in excess of thespecified limits.NOTE 2The following applied to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated valueob
27、tained from analysis should be rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit.Alloy NumberBComposition, percentOthersEachASTM UNS IronMagne-siumAlu-minumManga-neseZinc Zirconium RareEarthsThorium Copper Nickel SiliconTotalCOtherImpuriti
28、esAM100A M10100 . remainder 9.310.7 0.100.35 0.30 . . . 0.10 0.01 0.30 0.30 .AZ81A M11810 . remainder 7.08.1 0.130.35 0.401.0 . . . 0.10 0.01 0.30 0.30 .AZ91C M11914 . remainder 8.19.3 0.130.35 0.401.0 . . . 0.10 0.01 0.30 0.30 .AZ91E M11919 0.005DEremainder 8.19.3 0.170.35 0.401.0 . . . 0.015 0.001
29、0 0.20 0.30 0.01AZ92A M11920 . remainder 8.39.7 00.35 1.62.4 . . . 0.10 0.01 0.30 0.30 .EQ21A M18330 . remainder . . . 0.401.0 1.53.0F. 0.050.10 0.01 . 0.30 .EZ33A M12330 . remainder . . 2.03.1 0.501.0 2.54.0 . 0.10 0.01 . 0.30 .K1A M18010 . remainder . . . 0.401.0 . . . . . 0.30 .QE22AGM18220G. rem
30、ainder . . . 0.401.0 1.82.5F. 0.10 0.01 . 0.30 .ZE41A M16410 . remainder . 0.15 3.55.0 0.401.0 0.751.75 . 0.10 0.01 . 0.30 .ZK61A M16610 . remainder . . 5.56.5 0.61.0 . . 0.10 0.01 . 0.30 .ALimits are in weight percent maximum unless shown as a range or stated otherwise.BThese alloy designations wer
31、e established in accordance with Practice B 951.CIncludes listed elements for which no specific limit is shown.DIf iron content exceeds 0.005 %, the iron to manganese ratio shall not exceed 0.032.ESilver content for Alloy EQ21A shall be 1.3 to 1.7 %.FRare earth elements are in the form of didymium.G
32、Silver content for Alloy QE22A shall be 2.0 through 3.0 %.B40307210. Finish10.1 Unless otherwise specified, the castings should bechrome pickled or coated with a corrosion inhibitive oil priorto shipment.11. Certification11.1 The supplier shall, on request, furnish to the purchasera certificate stat
33、ing that the material has been sampled, tested,and inspected in accordance with this specification, and hasbeen found to meet the requirements.12. Inspection12.1 If the purchaser desires to make an inspection of thematerial at the manufacturers works where the castings aremade, it shall be so stated
34、 in the contract or purchase order.12.2 If the purchaser elects to have the inspection made atthe manufacturers works, the manufacturer shall afford theinspector representing the purchaser all reasonable facilities tosatisfy him that the material is being furnished in accordancewith this specificati
35、on. All tests and inspection shall be soconducted as not to interfere unnecessarily with the operationof the works.12.3 Special inspection requirements such as pressure test-ing, X-ray, or fluorescent penetrant must be stated on the order.Unless specific reference is made to the degree of discontinu
36、ityby reference to Reference Radiographs E 155, acceptancestandards shall be agreed upon by the purchaser and themanufacturer. When specified, radiography shall be in accor-dance with Guide E94and penetrant inspection shall be inaccordance with Practice E 165.13. Rejection13.1 Material failing to co
37、nform to the requirements of thisspecification, or in which defects are found during subsequentmanufacturing operations may be rejected. If rejected, themanufacturer shall be responsible only for replacement of thematerial to the purchaser. All of the rejected original materialshall be returned to t
38、he manufacturer.14. Packaging and Marking14.1 The material shall be packaged in such a manner as toprevent damage in ordinary handling and transportation. Thetype of packaging and gross weight of individual containersshall be left to the discretion of the manufacturer unlessotherwise agreed upon.14.
39、2 Packages or containers shall be such as to ensureacceptance by common or other carriers for safe transportationto the point of delivery.14.3 Each package or container shall be marked with thepurchase order number, drawing number, and quantity. Addi-tional information will be contained inside the p
40、ackage orcontainer to identify the shipment by drawing number, quan-tity, alloy, and condition.14.4 When specified in the contract or purchase order,castings shall be preserved, packaged, and packed in accor-dance with the requirements of Practices B 660. The applicablelevels shall be specified in t
41、he contract or order. Marking forshipment of such material shall be in accordance with one ofthe following selected standards for civil agencies: Fed. Std.No. 123, Practice B 666/B 666M, or Practice D 3951. MIL-STD-129 is to be cited for marking supplies for militaryagencies only.15. Keywords15.1 in
42、vestment castings; magnesium alloyTABLE 2 Tensile RequirementsNOTE 1For purposes of determining conformance with this specifi-cation, each value for tensile strength and yield strength shall be roundedoff to the nearest 0.1 ksi (0.07 MPa), and each value for elongation shallbe rounded off to the nea
43、rest 0.5 %, both in accordance with the roundingoff method of Practice E29.Alloy andTemperTensile Strength,min, ksi (MPa)Yield Strength(0.2 % Offset),min, ksiElongation in 1 in.(25 mm) or 43ia min, %AM100A-F 20.0 (138) 10.0 (69)AAM100A-T4 34.0 (234) 10.0 (69) 6AM100A-T6 34.0 (234) 15.0 (103) 2AM100A
44、-T7 34.0 (234) 17.0 (117)AAZ81A-T4 34.0 (234) 10.0 (69) 7AZ91C-F 18.0 (124) 10.0 (69)AAZ91C-T4 34.0 (234) 10.0 (69) 7AZ91C-T5 20.0 (138) 11.0 (76) 2AZ91C-T6 34.0 (234) 16.0 (110) 3AZ91E-T6 34.0 (234) 16.0 (110) 3AZ92A-F 20.0 (138) 10.0 (69)AAZ92A-T4 34.0 (234) 10.0 (69) 6AZ92A-T5 20.0 (138) 11.0 (76
45、)AAZ92A-T6 34.0 (234) 18.0 (124)AEQ21A-T6 34.0 (234) 25.0 (172) 2EZ33A-T5 20.0 (138) 14.0 (97) 2K1A-F 22.0 (152) 7.0 (48) 14QE22A-T6 35.0 (241) 25.0 (172) 2ZE41A-T5 29.0 (200) 19.5 (133) 2.5ZK61A-T6 40.0 (276) 25.0 (172) 5ANot required.B403073SUMMARY OF CHANGESCommittee B07 has identified the locati
46、on of selected changes to this standard since the last issue (B 403 02)that may impact the use of this standard. (Approved June 1, 2007.)(1) Replace the new B 951 for B 275 in 2.2 and in Table 1.ASTM International takes no position respecting the validity of any patent rights asserted in connection
47、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 time by the responsible te
48、chnical 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 will receive careful consider
49、ation 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 ASTM 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 servi
