1、Designation: B403 07 B403 12Standard Specification forMagnesium-Alloy Investment Castings1This standard is issued under the fixed designation B403; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 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 Department of Defense.1. Scope*1.1 This specification covers magnesium-alloy investment castin
3、gs designated as shown in Table 1.1.2 Alloy designations are in accordance with Practice E527; temper designations are in accordance with Practice B296.1.3 The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are for informationonly.2. Referenced Doc
4、uments2.1 The following documents of the issue in effect on the date of order acceptance form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B296 Practice for Temper Designations of Magnesium Alloys, Cast and WroughtB557 Test Methods for Tension Testing Wrought and C
5、ast Aluminum- and Magnesium-Alloy ProductsB660 Practices for Packaging/Packing of Aluminum and Magnesium ProductsB661 Practice for Heat Treatment of Magnesium AlloysB666/B666M Practice for Identification Marking of Aluminum and Magnesium ProductsB951 Practice for Codification of Unalloyed Magnesium
6、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 SpectrometryD3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits
7、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to Determine Conformance with SpecificationsE35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys (Withdrawn 2008)3E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE94 Guide for Radiographic ExaminationE155 R
8、eference Radiographs for Inspection of Aluminum and Magnesium CastingsE165 Practice for Liquid Penetrant Examination for General IndustryE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)2.3 Federal Standards:Fed. Std. No. 123 Marking for Shipping (Civil Agencies)32.
9、4 Military Standards:MIL-STD-129 Marking for Shipment and Storage (Military Agencies)33. Ordering Information3.1 Orders for castings under this specification shall include the following information:3.1.1 Quantity of each casting,3.1.2 Alloy (Section 6 and Table 1),3.1.3 Temper (see 5.1 and Table 2),
10、3.1.4 Casting drawing giving all necessary dimensions and showing 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 manufacturers works (see 12.1), and3.1.8 Special inspection requirem
11、ents (see 12.3).*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 States14. Materials and Manufacture4.1 The responsibility for furnishing castings that can be laid out and machi
12、ned to the finished dimensions within the permissiblevariations specified, as shown on the drawings, shall rest with the manufacturer, except where mold equipment is furnished by thepurchaser. Sufficient stock shall be allowed for shrinkage and, where required, for finishing; but castings of excessi
13、ve weight shallnot be furnished.5. Treatment5.1 The castings may be subjected to such heat treatment as the manufacturer desires to produce material that will conform tothe requirements specified. Heat treatment shall be performed on the whole of the casting, never on a part only, and shall be appli
14、edin a manner that will produce uniformity. Unless otherwise specified, treatment shall be in accordance with Practice B661.6. Chemical Composition6.1 The castings shall conform to the chemical composition limits in Table 1.6.2 The chemical analysis shall be made in accordance with Test MethodsMetho
15、d E35B954, or by any other approved methodsagreed upon by the manufacturer and the purchaser. The analysis may be made spectrochemically provided that, in case ofdisagreement, the results secured by Test MethodsMethod E35B954 shall be the basis for acceptance.6.3 The sampling shall be in accordance
16、with Practice E88B953.7. Tensile Properties7.1 LimitsThe tension test specimens representing the castings shall conform to the requirements for tensile propertiesprescribed in Table 2.7.2 Number of Tests:1 This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys
17、and is the direct responsibility of Subcommittee B07.04 on MagnesiumAlloy Cast and Wrought Products.Current edition approved June 1, 2007Nov. 1, 2012. Published July 2007November 2012. Originally approved in 1963. Last previous edition approved in 20022007 asB403 02.B403 07. DOI: 10.1520/B0403-07.10
18、.1520/B0403-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Standardization Documents
19、Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.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 suspectedo
20、r indicated in amounts 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
21、 a calculated valueobtained 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 Number B Composition, percentOthersEachASTM UNS Iron Magne-sium Alu-minum Manga-nese Zinc Zirconium RareEarthsThorium Copper Nickel
22、 SiliconTotalCOtherImpuritiesAM100A 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 0.005DE remainder 8.19.3 0.170.
23、35 0.401.0 . . . 0.015 0.0010 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 . . .
24、 . . 0.30 .QE22AG M18220G . remainder . . . 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 .A Limits are in weight percent maximum unless shown as a range or stated otherw
25、ise.B These alloy designations were established in accordance with Practice B951.C Includes listed elements for which no specific limit is shown.D If iron content exceeds 0.005 %, the iron to manganese ratio shall not exceed 0.032.E Silver content for Alloy EQ21A shall be 1.3 to 1.7 %.F Rare earth e
26、lements are in the form of didymium.G Silver content for Alloy QE22A shall be 2.0 through 3.0 %.B403 1227.2.1 At least two tension test specimens shall be cast from each melt of 2000 lb (907 kg) or fraction thereof to represent thecastings poured from the same melt. If the castings are to be heat tr
27、eated, the specimens shall be heat treated with productioncastings of the same alloy and in the same temper as the specimens.7.2.2 Each heat-treating furnace charge shall include at least two tension test specimens poured from a production melt. Suchspecimens shall be of the same alloy and in the sa
28、me temper as the castings, and shall be tested to judge the quality of theheat-treating operation given the furnace charge.7.3 Test Specimens:7.3.1 The tension test specimens shall be separately cast in the same refractory material as the castings. The specimen shouldbe “cast to size” according to t
29、he dimensions of the 0.250-in. (6.35-mm) diameter round specimen shown in Fig. 8 of Test MethodsB557. They shall not be machined prior to test except to adapt the grip ends to the holders of the testing machine to assure axialloading.7.3.2 If any tension test specimen is improperly machined or shows
30、 flaws upon testing, it may be discarded and anotherspecimen from the same heat or melt used instead. If no additional specimen is available, the manufacturer and the purchaser shallagree on an alternative procedure.7.4 Test MethodsThe tension tests shall be made in accordance with Test Methods B557
31、.8. Retests8.1 If any test specimen fails to conform to the prescribed requirements, two additional representative specimens shall beselected and tested. If either of these specimens fails to conform to the requirements, the lot may be rejected. If, however, thespecimen failure is due to inadequate
32、thermal treatment, the material may be reheat-treated and resampled in accordance with 7.2.Castings may be reheat-treated no more than twice.9. General Quality9.1 The castings shall be of uniform quality and condition, free from cracks and other injurious defects, and shall be cleanedbefore inspecti
33、on by blasting or other approved process.9.2 Castings shall not be repaired by welding, impregnation, peening, or other method without permission of the purchaser.10. Finish10.1 Unless otherwise specified, the castings should be chrome pickled or coated with a corrosion inhibitive oil prior toshipme
34、nt.11. Certification11.1 The supplier shall, on request, furnish to the purchaser a certificate stating that the material has been sampled, tested, andinspected in accordance with this specification, and has been found to meet the requirements.12. Inspection12.1 If the purchaser desires to make an i
35、nspection of the material at the manufacturers works where the castings are made,it shall be so stated in the contract or purchase order.12.2 If the purchaser elects to have the inspection made at the manufacturers works, the manufacturer shall afford the inspectorrepresenting the purchaser all reas
36、onable facilities to satisfy him that the material is being furnished in accordance with thisspecification. All tests and inspection shall be so conducted as not to interfere unnecessarily with the operation of the works.12.3 Special inspection requirements such as pressure testing, X-ray, or fluore
37、scent penetrant must be stated on the order. Unlessspecific reference is made to the degree of discontinuity by reference to Reference Radiographs E155, acceptance standards shallbe agreed upon by the purchaser and the manufacturer. When specified, radiography shall be in accordance with Guide E94 a
38、ndpenetrant inspection shall be in accordance with Practice E165.13. Rejection13.1 Material failing to conform to the requirements of this specification, or in which defects are found during subsequentmanufacturing operations may be rejected. If rejected, the manufacturer shall be responsible only f
39、or replacement of the materialto the purchaser. All of the rejected original material shall be returned to the manufacturer.14. Packaging and Marking14.1 The material shall be packaged in such a manner as to prevent damage in ordinary handling and transportation. The typeof packaging and gross weigh
40、t of individual containers shall be left to the discretion of the manufacturer unless otherwise agreedupon.B403 12314.2 Packages or containers shall be such as to ensure acceptance by common or other carriers for safe transportation to thepoint of delivery.14.3 Each package or container shall be mar
41、ked with the purchase order number, drawing number, and quantity. Additionalinformation will be contained inside the package or container to identify the shipment by drawing number, quantity, alloy, andcondition.14.4 When specified in the contract or purchase order, castings shall be preserved, pack
42、aged, and packed in accordance withthe requirements of Practices B660. The applicable levels shall be specified in the contract or order. Marking for shipment of suchmaterial shall be in accordance with one of the following selected standards for civil agencies: Fed. Std. No. 123, PracticeB666/B666M
43、, or Practice D3951. MIL-STD-129 is to be cited for marking supplies for military agencies only.15. Keywords15.1 investment castings; magnesium alloyTABLE 2 Tensile RequirementsNOTE 1For purposes of determining conformance with thisspecification, each value for tensile strength and yield strength sh
44、all berounded off to the nearest 0.1 ksi (0.07 MPa), and each value forelongation shall be rounded off to the nearest 0.5 %, both in accordancewith the rounding off method of Practice E29.Alloy andTemperTensile Strength,min, ksi (MPa)Yield Strength(0.2 % Offset),min, ksiElongation in 1 in.(25 mm) or
45、 4ia 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-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
46、-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) 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 (
47、133) 2.5ZK61A-T6 40.0 (276) 25.0 (172) 5A Not required.B403 124SUMMARY OF CHANGESCommittee B07 has identified the location of selected changes to this standard since the last issue(B403 02B403 07) that may impact the use of this standard. (Approved Nov. 1, 2012June 1, 2007.)(1) Replace the new Repla
48、ced withdrawn Test Methods E35 with Practice B951B953 for and Test Method B275B954 in 2.26.2and 6.3in Table 1ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised
49、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 technical 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 consideration at a meeting of th
