1、Designation: B92/B92M 11B92/B92M 17Standard Specification forUnalloyed Magnesium Ingot and Stick For Remelting1This standard is issued under the fixed designation B92/B92M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year o
2、f 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.1. Scope*1.1 This specification covers mag
3、nesium in the form of ingot and stick for remelting: 9980Ais available in ingot and stick form,and 9980B, 9990A, 9995A, and 9998A are generally available only in ingot form.1.2 The values stated in SI units are to be regarded as a separate standard. The values stated in each system are not exactequi
4、valents, therefore each system must be used independently of the other.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recomme
5、ndations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2B951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and WroughtB953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemi
6、cal AnalysisB954 Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission SpectrometryE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys (Withdrawn 2008)3E88
7、Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition3. Terminology3.1 Definitions:3.1.1 ingota cast form suitable for remelting.3.1.2 stickan extruded form substantially uniform in cross section cut to desired length or weight.4. Ordering Informat
8、ion4.1 Orders for ingot and stick under this specification shall include the following information:4.1.1 Grade Grade, in accordance with the requirements of Practice B951 (Section 6 and Table 1),4.1.2 Quantity, in pieces or pounds kilograms, and4.1.3 Form; by agreement between the purchaser and the
9、manufacturer the approximate form and weight of each piece or ingotmay be specified.4.1.4 For inch-pound orders specify B92, for metric orders specify B92M. Do not mix units.5. Materials and Manufacture5.1 No scrap shall be used in the production of magnesium ingot and stick, except such as shall ac
10、cumulate at themanufacturers plants from material of similar composition and of his own manufacture.1 This specification is under the jurisdiction of the ASTM Committee B07 on Light Metals and Alloys and is the direct responsibility of Subcommittee B07.04 onMagnesium Alloy Cast and Wrought Products.
11、Current edition approved May 1, 2011May 1, 2017. Published June 2011May 2017. Originally approved in 1933. Last previous edition approved in 20072011 asB92/B92MB92/B92M 11.07. DOI: 10.1520/B0092_B0092M-11.10.1520/B0092_B0092M-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or
12、 contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes hav
13、e 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 appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official doc
14、ument.*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 States16. Chemical Composition6.1 LimitsThe material shall conform to the requirements as to chemical composition prescrib
15、ed in Table 1.6.2 Sampling:6.2.1 Sufficient samples shall be taken by the manufacturer to assure conformance to the chemical composition requirementsof the alloy. Samples mayshall be taken from the molten metal in accordance with the requirements of Practice B953 when theingot is poured or from the
16、ingot. Samples shall be representative of the material.6.2.2 In case of dispute, the sampling for chemical analysis shall be according to the requirements of Practice E88. If the ingotsare shipped in carload lots of the same alloy, not less than four ingots shall be taken at random from the carload
17、for sampling. Ifthe shipment is in less than carload lots, one ingot shall be taken for sampling for each 10 000 lb 4500 kg or fraction thereof.6.3 Methods of AnalysisAny suitable method of chemical analysis may be used. In case of dispute, the analysis shall be madeby methods given in Test MethodsM
18、ethod E35B954, or any other standard methods of analysis approved by ASTM unless someother method is agreed upon by the purchaser and vendor.7. General Quality7.1 Magnesium ingot and stick shall have a clean surface and shall be commercially free from dirt, slag, or other foreignmaterial.8. Rejectio
19、n8.1 Material that does not conform to the requirements of this specification may be rejected, and if rejected the conditions ofreplacement shall be as agreed upon between the purchaser and the seller. The sellers responsibility shall be limited to a periodof six months from shipping date unless oth
20、er agreement is made by the purchaser and seller.TABLE 1 Chemical RequirementsNOTE 1Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements issuspected or indicated in the course of routine analysis, further analysis sh
21、all be made to determine that the total of these other elements is not in excessof the limits specified in the last column of the table.NOTE 2The following applies to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated valueobtained from an
22、alysis should be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit (see PracticeE29.Designa-tion Chemical Composition, % max unless shown as a range or as a minPractice UNS MagnesiumAluminum Copper Iron Lead Manganese Nickel Silicon Sodium Tin
23、 TitaniumOtherElementsEeachA,B9980A M19980 99.80 min . 0.02 . 0.01 0.10 0.001 . 0.006 0.01 . 0.059980B M19991 99.80 min . 0.02 . 0.01 0.10 0.005 . . 0.01 . 0.059990AC M19990 99.90 min 0.003 . 0.04 . 0.004 0.001 0.005 . . . 0.019995AC M19995 99.95 min 0.01 . 0.003 . 0.004 0.001 0.005 . . 0.01 0.00599
24、98AC M19998 99.98 min 0.004 0.0005 0.002 0.001 0.002 0.0005 0.003 . . 0.001 0.005TABLE 1 Chemical RequirementsNOTE 1Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements issuspected or indicated in the course of routi
25、ne analysis, further analysis shall be made to determine that the total of these other elements is not in excessof the limits specified in the last column of the table.NOTE 2The following applies to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a
26、calculated valueobtained from analysis should be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit (see PracticeE29.Designa-tion Chemical Composition, % max unless shown as a range or as a minPractice UNS Mag-nesium Alumi-num Copper Iron Lead
27、Manga-nese Nickel Silicon Sodium Tin TitaniumOtherElementsEachA,B9980A M19980 99.80 min . . . 0.02 . . . 0.01 0.10 0.001 . . . 0.006 0.01 . . . 0.059980B M19991 99.80 min . . . 0.02 . . . 0.01 0.10 0.005 . . . . . . 0.01 . . . 0.059990AC M19990 99.90 min 0.003 . . . 0.04 . . . 0.004 0.001 0.005 . .
28、. . . . . . . 0.019995AC M19995 99.95 min 0.01 . . . 0.003 . . . 0.004 0.001 0.005 . . . . . . 0.01 0.0059998AC M19998 99.98 min 0.004 0.0005 0.002 0.001 0.002 0.0005 0.003 . . . . . . 0.001 0.005A For specific applications, other minor impurities may be required to be controlled to limiting maxima
29、by agreement between the purchaser and the seller.B Includes elements for which no specific limit is shown.C For 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 0.00003B92/B92M 1
30、729. Packaging, Marking, and Shipping9.1 The material shall be packaged in such a manner as to prevent damage in ordinary handling and transportation. The typeof packaging and gross weight of individual containers shall be left to the discretion of the seller unless otherwise agreed upon.Packaging m
31、ethods and containers shall be so selected as to permit maximum utility of mechanical equipment in unloading andsubsequent handling. Each package or container shall contain only one size and form of material when packed for shipment unlessotherwise agreed upon.9.2 Packages or containers shall be suc
32、h as to ensure acceptance by common or other carriers for safe transportation at thelowest rate to the point of delivery.9.3 Each package or container shall be marked with the purchase order number, form, quantity, specification number, gross andnet weights, and the name of the manufacturer.10. Keyw
33、ords10.1 chemical specifications; compositional limits; contaminants; contents; grades; magnesium; pure; unalloyedSUMMARY OF CHANGESB07Committee B07 has identified the location of selected changes to this standard since the last issue(June(B92/B92M 11 2007) ) that may impact the use of this standard
34、. (Approved May 1, 2011May 1, 2017).)(1) RevisedAdded Table 1Practice B953 (“Practice for Sampling Magnesium and Magnesium Alloys for SpectrochemicalAnalysi”) to 6.2.1.(2) Added Test Method B954 (“Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic EmissionSpectrometry”) to 6.3.(3)
35、Deleted withdrawn Test Method E35 (“Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys”).B07 has identified the location of selected changes to this standard since the last issue (April 2001) that mayimpact the use of this standard. (Approved June 1, 2007)(1) Replaced B275 with new
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40、the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ The last approved version of this historical standard is referenced on www.astm.org.B92/B92M 174
