1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 8287:2011 Magnesium and magnesium alloys Unalloyed magnesium Chemical compositionBS ISO 8287:2011 BRITISH STANDARD National foreword This British Standard is the UK imp
2、lementation of ISO 8287:2011. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the ne
3、cessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 70478 9 ICS 77.120.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Str
4、ategy Committee on 31 December 2011. Amendments issued since publication Date Text affectedBS ISO 8287:2011 Magnesium and magnesium alloys Unalloyed magnesium Chemical composition Magnsium et alliages de magnsium Magnsium non alli Composition chimique ISO 2011 Reference number ISO 8287:2011(E) Third
5、 edition 2011-12-01 ISO 8287 INTERNATIONAL STANDARDBS ISO 8287:2011 ISO 8287:2011(E)COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photoc
6、opying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switz
7、erland ii ISO 2011 All rights reservedBS ISO 8287:2011 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees.
8、 Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Interna
9、tional Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Stan
10、dards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subje
11、ct of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8287 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee SC 5, Magnesium and alloys of cast or wrought magnesium. This third edition cancels and replaces t
12、he second edition (ISO 8287:2000), which has been technically revised. ISO 8287:2011(E) ISO 2011 All rights reserved iiiBS ISO 8287:2011 Introduction This International Standard classifies commercially available cast unalloyed magnesium into a number of grades suitable for the applications for which
13、 they might be used. The grades listed in this International Standard are identical to those in EN 12421:1998. ISO 8287:2011(E)iv ISO 2011 All rights reservedBS ISO 8287:2011 INTERNATIONAL STANDARD ISO 8287:2011(E) Magnesium and magnesium alloys Unalloyed magnesium Chemical composition 1 Scope This
14、International Standard specifies the chemical composition of cast unalloyed magnesium. It specifies classification, designation, testing rules, marking, packing, transportation, storage, and information contained in the contract. This International Standard is for cast unalloyed magnesium produced b
15、y the silicon-thermo process or molten salt electrolysis process. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docum
16、ent (including any amendments) applies. ISO 80000-1:2009, Quantities and units Part 1: General EN 12421:1998, Magnesium and magnesium alloys Unalloyed magnesium 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 unalloyed magnesium magnesium wit
17、h a minimum purity of 99,0 % by mass 3.2 cast unalloyed magnesium unalloyed magnesium cast in a variety of shapes 4 Information to be supplied by the purchaser The enquiry and order shall define the product required and shall contain the following information: a) material designation; b) product sha
18、pe; c) quantity (for example number, mass, etc.); d) any requirements for declarations of conformity; e) any additional requirements agreed between the manufacturer and the purchaser. 5 Designation The material shall be designated by the appropriate symbols given in Table 1. ISO 2011 All rights rese
19、rved 1BS ISO 8287:2011 6 Manufacture The manufacturing process shall be left to the discretion of the manufacturer unless otherwise agreed at the time of ordering. NOTE The manufacturing process covers all operations up to the delivery of the product. 7 Chemical composition The chemical composition
20、of cast unalloyed magnesium shall conform to the requirements for the appropriate material given in Table 1. Unless otherwise specified in the enquiry and order, the chemical composition of the cast unalloyed magnesium shall relate to that of samples taken from the melt at the time of pouring. 8 Gen
21、eral condition of the product The product shall have a clean surface in accordance with the agreement between the manufacturer and the purchaser, and shall be free from visible and internal defects to a level also agreed between the manufacturer and the purchaser. 9 Testing conditions 9.1 Inspection
22、 and acceptance 9.1.1 The product quality certificate should be filled in by the supplier. 9.1.2 The purchaser should retest the products received. If the results of the retest do not conform to this International Standard or the purchase order, the purchaser should inform the supplier within 3 mont
23、hs from the date the products were received, and a solution should be reached between the supplier and the purchaser. 9.2 Batches Pure magnesium should be submitted to testing in batches; each consignment should be from the same issue of the melting furnace products. No limits exist on the weight of
24、 each single consignment. 10 Testing Analysis to ensure conformity with the chemical composition requirements given in Table 1 shall be carried out on samples taken by the manufacturer and representative of the material delivered. ISO 8287:2011(E)2 ISO 2011 All rights reservedBS ISO 8287:2011 Table
25、1 Chemical composition of cast unalloyed magnesium Material designation Chemical composition % by mass In accor- dance with ISO system In accor- dance with EN 12421 Min. or Al Mn Si Fe Cu Ni Pb Sn Na Ca Zn Others a (each) Mg b ISO Mg 99,5 EN- MB10010 Min. 0,1 0,1 0,1 0,1 0,1 0,1 0,01 0,01 0,05 99,5
26、ISO Mg 99,80A EN- MB10020 Min. 0,05 0,05 0,05 0,05 0,02 0,001 0,02 0,01 0,003 0,003 0,05 0,05 99,80 ISO Mg 99,80B EN- MB10021 Min. 0,05 0,05 0,05 0,05 0,02 0,002 0,02 0,01 0,05 0,05 99,80 ISO Mg 99,80CMin. 0,05 0,1 0,02 0,004 0,005 0,001 0,01 99,80 ISO Mg 99,90Min. 0,02 0,03 0,03 0,04 0,004 0,001 0,
27、01 99,90 ISO Mg 99,95A EN- MB10030 Min. 0,01 0,006 0,006 0,003 0,005 0,001 0,005 0,005 0,003 0,003 0,005 0,005 99,95 ISO Mg 99,95B EN- MB10031 Min. 0,015 0,015 0,015 0,005 0,005 0,001 0,005 0,005 0,01 0,005 99,95 ISO Mg 99,98Min. 0,004 0,002 0,003 0,002 0,0005 0,0005 0,001 0,004 0,004 0,005 99,98 IS
28、O Mg 99,99Min. 0,002 0,002 0,003 0,002 0,0003 0,0003 0,002 0,002 0,003 0,003 99,99 aThe sum of the mass percents of Cd, Hg, As and Cr should be less than 0,01 %. For products used in the food and medicine fields, these four elements must be inspected. bBy difference. 11 Rounding of results In record
29、ing the results of the chemical analysis, the result obtained for any property specified in this International Standard shall be expressed to the same number of decimal places as the corresponding value in this International Standard. Rounding shall be carried out as specified in ISO 80000-1:2009, A
30、nnex B, Clauses B.2 and B.3. In Clause B.3, it is left to the discretion of the manufacturer as to whether to use Rule A or B, unless the use of one of the rules has been agreed at the time of acceptance of the order. 12 Declaration of conformity and inspection documents If agreed between the manufa
31、cturer and the purchaser or when specified on the order, the manufacturer shall provide a declaration of product conformity or an inspection document listing the results of the analysis of the chemical elements given in Table 1, and of any other element which may have been previously agreed upon. 13
32、 Marking Unless otherwise agreed, each product, or bundle of products, shall be clearly marked with the following: a) manufacturer s identification, molten furnace number, and mark of test on each ingot; b) each bundle should have a bright colour, waterproofing, a label that does not fall off easily
33、 and on which is clearly marked the smelting number, bunch of numbers, net weight, number of ingots, designation, manufacturing date, place of origin, and manufacturer s logo. ISO 8287:2011(E) ISO 2011 All rights reserved 3BS ISO 8287:2011 The method of marking is left to the discretion of the manuf
34、acturer. Markings shall be indelible and shall not be a source of contamination. 14 Packing Unless otherwise agreed by the supplier and the purchaser, the pure magnesium ingot should a) be packed on a pure magnesium metal plate or a dry wooden plate, b) be covered and wrapped by a whole plastic film
35、, then enlaced by PVC belts, c) contain pure magnesium ingots from a maximum of 2 smelting numbers in each bunch, and d) contain 1 000 kg 50kg or 500 kg 20 kg of pure magnesium ingots in each bunch. 15 Transportation The pure magnesium ingots should use rainproof vehicles or vehicles equipped with r
36、ainproof applications or clean containers for the transportation. Special care should be taken when loading and unloading during rain and when the ingots are dripping wet. 16 Storage The pure magnesium ingots should be stored in a dry, clean, ventilated warehouse which contains no corrosive medium.
37、17 Quality certificate Each batch of products should have a quality certificate attached, indicating the following: a) suppliers name; b) designation; c) batch number; d) net weight and ingot number; e) the analysis and test results; f) the number of this International Standard. 18 Complaints In the
38、 event of any product complaints, the manufacturer shall examine the validity of the complaint within a reasonable time. Complaints may only be raised against defective products if the defect impairs their processing and use to a more than negligible extent. This shall apply unless otherwise agreed
39、at the time of acceptance of the order. The purchaser shall give the manufacturer the opportunity to judge whether the complaints are justified. ISO 8287:2011(E)4 ISO 2011 All rights reservedBS ISO 8287:2011BS ISO 8287:2011 ISO 8287:2011(E) ISO 2011 All rights reserved ICS 77.120.20 Price based on 4
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