1、Designation: B199 12B199 17Standard Specification forMagnesium-Alloy Permanent Mold Castings1This standard is issued under the fixed designation B199; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber 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.1. Scope*1.1 This specification covers magnesium alloy permanent
3、 mold casting alloys designated as shown in Table 1.Table 1.1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are providedfor information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated w
4、ith its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on stand
5、ardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on date of order
6、acceptance form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B93/B93M Specification for Magnesium Alloys in Ingot Form for Sand Castings, Permanent Mold Castings, and Die CastingsB296 Practice for Temper Designations of Magnesium Alloys, Cast and WroughtB557 Test M
7、ethods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy ProductsB660 Practices for Packaging/Packing of Aluminum and Magnesium ProductsB661 Practice for Heat Treatment of Magnesium AlloysB951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and WroughtB95
8、3 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical AnalysisB954 Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission SpectrometryE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determi
9、ne Conformance with SpecificationsE88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE94 Guide for Radiographic ExaminationE155 Reference Radiographs for Inspection of Aluminum and Magnesium CastingsE165 Practice for Liquid Penetrant Examinat
10、ion 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 Shipment (Civil Agencies)32.4 Aerospace Materials Specification:4AMS 2768 Heat Treatment of Magnesium Alloy Castings1 This specification is u
11、nder the jurisdiction ofASTM Committee B07 on Light Metals andAlloys and is the direct responsibility of Subcommittee B07.04 on MagnesiumAlloy Cast and Wrought Products.Current edition approved Nov. 1, 2012May 1, 2017. Published November 2012May 2017. Originally approved in 1945. Last previous editi
12、on approved in 20072012 asB199 07.B199 12. DOI: 10.1520/B0199-12.10.1520/B0199-17.2 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
13、 on the ASTM website.3 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.4 Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale, PA 15096-0001, http:/www.sae.org.This document i
14、s 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 accurately, ASTM recommends that users consult prior editions as approp
15、riate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*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 State
16、s13. Terminology3.1 Definitions:3.1.1 permanent mold castingcasting, na metal object produced by introducing molten metal by gravity or low pressure intoa mold constructed of durable material, usually iron or steel, and allowing it to solidify.3.1.2 semipermanent mold castingcasting, na permanent mo
17、ld casting which is made using an expendable core such asbonded sand.4. Ordering Information4.1 Orders for castings under this specification shall include the following information:4.1.1 Quantity of each casting,4.1.2 Alloy (Section 7 and Table 1),4.1.3 Temper (Section 8 and Table 2),4.1.4 Minimum p
18、roperties of specimens cut from castings, if required (see section 9.3),4.1.5 Drawing showing dimensions of the castings (the amount of stock left for machine finish should be indicated),4.1.6 Surface treatment (see 10.1),4.1.7 Whether inspection is required at the manufacturers works (see section 1
19、1.1.1),4.1.8 Special inspection requirements (see 11.2),4.1.9 Whether certification is required (see 13.1), and4.1.10 Whether marking for identification is required (see 14.1).TABLE 1 Chemical Composition LimitsANOTE 1Analysis shall regularly be made only for the elements specifically mentioned in t
20、his table. If, however, the presence of other elements issuspected or indicated in amounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excessof the specified limits.NOTE 2The following applies to all specified limits in this t
21、able: For purposes of acceptance and rejection, an observed value or a calculated valueobtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit.Alloy NumberB Composition, %ASTM UNS Iron Magne-sium Aluminum Manga-nese Z
22、inc RareEarths Zirconium Silicon Copper NickelTotalCOtherImpuri-tiesOthersEachASTM UNS Magne-sium Aluminum Copper Iron Manga-nese Nickel RareEarths Silicon Zinc Zirco-nium OthersEachTotalCOtherImpuritiesAM100A M10100 . remainder 9.3 to10.70.100.35 0.30 . . 0.30 0.10 0.01 0.30 .AM100A M10100 remainde
23、r 9.310.7 0.10 . . . 0.100.35 0.01 . . . 0.30 0.30 . . . . . . 0.30AZ81A M11810 . remainder 7.0 to8.10.130.35 0.40 to1.0. . 0.30 0.10 0.01 0.30 .AZ81A M11810 remainder 7.08.1 0.10 . . . 0.130.35 0.01 . . . 0.30 0.401.0 . . . . . . 0.30AZ91C M11914 . remainder 8.1 to9.30.130.35 0.40 to1.0. . 0.30 0.1
24、0 0.01 0.30 .AZ91C M11914 remainder 8.19.3 0.10 . . . 0.130.35 0.01 . . . 0.30 0.401.0 . . . . . . 0.30AZ91E M11919 0.005D remainder 8.1 to9.30.170.35 0.40 to1.0. . 0.20 0.015 0.0010 0.30 0.01AZ91E M11919 remainder 8.19.3 0.015 0.005D 0.170.35 0.0010 . . . 0.20 0.401.0 . . . 0.01 0.30AZ92A M11920 .
25、remainder 8.3 to9.70.100.35 1.6 to 2.4 . . 0.30 0.25 0.01 0.30 .AZ92A M11920 remainder 8.39.7 0.25 . . . 0.100.35 0.01 . . . 0.30 1.62.4 . . . . . . 0.30EQ21AE M18330 . remainder . . . 1.5 to3.0F0.40 to1.0. 0.050.10 0.01 0.30 .EQ21AE M18330 remainder . . . 0.050.10 . . . . . . 0.01 1.53.0F . . . . .
26、 . 0.401.0 . . . 0.30EZ33A M12330 . remainder . . 2.0 to 3.1 2.5 to 4.0 0.50 to1.0. 0.10 0.01 0.30 .EZ33A M12330 remainder . . . 0.10 . . . . . . 0.01 2.54.0 . . . 2.03.1 0.501.0 . . . 0.30QE22AG M18220E . remainder . . . 1.8 to2.5F0.40 to1.0. 0.10 0.01 0.30 .QE22AG M18220E remainder . . . 0.10 . .
27、. . . . 0.01 1.82.5F . . . . . . 0.401.0 . . . 0.30A Limits Limits are in weight percent max unless shown as a range or stated otherwise.B ASTM ASTM alloy designations were established in accordance with Practice B951. UNS designations were established in accordance with Practice E527.C IncludesIncl
28、udes listed elements for which no specific limit is shown.D If iron exceeds 0.005 %, the iron to manganese ratio shall not exceed 0.032.E Silver Silver content for Alloy EQ21A (M18330) shall be 1.3 to 1.7 %.F Rare earth elements are in the form of didymium.G Silver Silver content for Alloy QE22A (M1
29、8220) shall be 2.0 to 3.0, inclusive.B199 1725. Manufacture5.1 The responsibility of furnishing castings that can be laid out and machined to the finished dimensions within the permissiblevariations specified, as shown on the blueprints or drawings, shall rest with the supplier, except when molds ar
30、e furnished by thepurchaser. Sufficient stock shall be allowed for shrinkage, and where requested, for finishing; castings of excessive weight shallnot be furnished.5.2 The castings may be subjected to the heat treatment necessary to produce material that will conform to the requirementsspecified. H
31、eat treatment shall be performed on the whole of a casting, never on a part only, and shall be applied in a manner thatwill produce the utmost uniformity.6. General Quality6.1 The castings shall be of uniform quality and condition, free of cracks or other injurious defects, and shall be well cleaned
32、by sand blasting or any other approved process before inspection.7. Chemical Composition7.1 LimitsThe material shall conform to the chemical composition limits prescribed in Table 1. Conformance shall bedetermined by analyzing samples taken when the castings are poured, or by analyzing samples taken
33、 from the finished product.If the chemical composition has been determined during the course of manufacture, sampling and analysis of the finished productis not necessary.7.2 Number of SamplesThe number of samples taken for determination of chemical composition shall be as follows:7.2.1 When samples
34、 are taken at the time the castings are poured, at least one sample shall be taken from each melt of 2000lb (907 kg) or fraction thereof.7.2.2 When samples are taken from the castings or test bars, a sample shall be taken to represent each 2000 lb (907 kg) orfraction thereof in the shipment except t
35、hat not more than one sample shall be required per casting.7.3 Methods of SamplingSamples for determination of chemical composition shall be taken in accordance with one of thefollowing methods:7.3.1 Samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning
36、, or clipping arepresentative piece or pieces to obtain a weight of prepared sample not less than 75 g. Sampling shall be in accordance withPractice E88.7.3.2 Samples for spectrochemical analysis shall be in accordance with Practice B953, or other methods of analysis shall betaken by methods suitabl
37、e for the form of material being analyzed and the type of analytical method used.7.4 Methods of Chemical AnalysisAny suitable method of chemical analysis may be used. In case of dispute, the analysis shallbe made by methods given in Test Method B954 or any other standard methods of analysis approved
38、 byASTM unless some othermethod is agreed upon.TABLE 2 Tensile RequirementsNOTE 1For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to thenearest 0.1 ksi and each value for elongation shall be rounded to the nearest 0.
39、5 % both in accordance with the rounding method of Practice E29.Alloy NumberTemperA Tensile Strength, min.ksi (MPa) Yield StrengthB (0.2 %offset) min. ksi (MPa)Elongation in2 in., (50.8 mm)min., %ASTM UNSAM100A M10100 F 20.0 (138) 10.0 (69) CT4 34.0 (234) 10.0 (69) 6T6 34.0 (234) 15.0 (103) 2T61 34.
40、0 (234) 17.0 (117) CAZ81A M11810 T4 34.0 (234) 11.0 (76) 7AZ91C M11914 F 23.0 (158) 11.0 (76) CT4 34.0 (234) 11.0 (76) 7T5 23.0 (158) 12.0 (83) 2T6 34.0 (234) 16.0 (110) 3AZ91E M11919 T6 34.0 (234) 16.0 (110) .AZ92A M11920 F 23.0 (158) 11.0 (76) CT4 34.0 (234) 11.0 (76) 6T5 23.0 (158) 12.0 (83) CT6
41、34.0 (234) 18.0 (124) CEQ21A M18330 T6 34.0 (234) 25.0 (172) .EZ33A M12330 T5 20.0 (138) 14.0 (96) 2QE22A M18220 T6 35.0 (241) 25.0 (172) 2A These temper designations were established in accordance with Practice B296.B See X1.3.C Not required.B199 1738. Heat Treatment8.1 Unless otherwise specified,
42、heat treatment for the applicable tempers designated in Table 2 shall be in accordance withPractice B661 or with AMS 2768.9. Tensile Requirements9.1 LimitsThe tension test specimens representing the castings shall conform to the requirements of Table 2.9.2 Number of TestsAt least one tension test sp
43、ecimen shall be cast from each melt of 2000 lb (907 kg) or fraction thereofto represent the castings poured from the same melt. If the castings are to be heat treated, the specimens shall be heat treated withproduction castings of the same alloy and in the same temper as the specimens. The specimens
44、 shall then be tested to judge theresponse of their corresponding melts to the type of heat treatment to which the specimens were subjected.9.2.1 Each heat-treating furnace charge shall include at least one tension test specimen poured from a production melt. Suchspecimens shall be of the same alloy
45、 and in the same temper as the castings, and shall be tested to judge the quality of theheat-treating operation given the furnace charge.9.3 If test bars are cut from castings, the number and location shall be as agreed upon between the supplier and the purchaser.Depending on the radiographic qualit
46、y specified (see 11.4), test bars cut from casting may not meet the requirements of Table 2.Mechanical property limits from cut bars shall be agreed to by the supplier and purchaser.9.4 Test SpecimensThe tension test specimens shall be separately cast in a permanent mold and shall be cast to size in
47、accordance with the dimensions shown in Fig. 89 of Test Method B557. They shall not be machined prior to testing except to adaptthe grip ends to the holders of the testing machine in such a manner as to ensure an axial load.9.4.1 If any tension test specimen is improperly machined or shows flaws upo
48、n testing, it may be discarded and anotherspecimen from the same heat or melt used instead. If no additional specimen is available, the supplier and the purchaser shall agreeon an alternative procedure.9.5 Test MethodsThe tension tests shall be made in accordance with Test Method B557.10. Finish10.1
49、 Depending on casting processing and end use requirements, castings should be protected by the use of chrome pickling,anodizing, resin sealing, or other approved methods prior to shipment (see X1.4).11. Inspection11.1 If the purchaser desires that inspection be made at the suppliers works where the material is made, it shall be so statedin the contract or purchase order.11.1.1 If the purchaser elects to have the inspection made at the suppliers works, the supplier shall afford the inspectorrepresenting the purchaser all reasonabl
