1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1753 : 1997 The Eur
2、opean Standard EN 1753 : 1997 has the status of a British Standard ICS 77.150.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Magnesium and magnesium alloys Magnesium alloy ingots and castingsThis British Standard, having been prepared under the direction of the Engineering
3、 Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997 BSI 1997 ISBN 0 580 28622 3 BS EN 1753 : 1997 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is the English language version of E
4、N 1753 : 1997. It supersedes BS 2970 : 1989. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Magnesium and magnesium alloys, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the
5、interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standard
6、s which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a Britis
7、h Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Eu
8、ropa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1753 : 1997 E EUROPEAN STANDARD EN 1753 NORME EUROPE ENNE EUROPA ISCHE NORM June 1997 IC
9、S 77.150.20 Descriptors: Magnesium, magnesium alloys, ingots, castings, designation, chemical composition, mechanical properties, test specimen, tests, correspondance of designations English version Magnesium and magnesium alloys Magnesium alloy ingots and castings Magne sium et alliages de magne si
10、um Lingots et pie ces moule es en alliages de magne sium Magnesium und Magnesiumlegierungen Blockmetalle und Gustu cke aus Magnesiumlegierungen This European Standard was approved by CEN on 1997-05-01. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
11、itions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three
12、 official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Aust
13、ria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1753 : 1997 BSI 1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 19
14、0, Foundry technology, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest b
15、y December 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherl
16、ands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Designation 3 3.1 Material 3 3.2 Temper designation 3 3.3 Casting process designation 3 4 Requirements 3 4.1 Chemical composition 3 4.2 Mechanical p
17、roperties of castings 3 4.3 Frequency of testing 3 5 Sampling 4 6 Test pieces 4 6.1 Design 4 6.2 Test pieces obtained from separately cast samples 4 6.3 Test pieces cut from castings 4 7 Test methods 4 7.1 Tensile test 4 7.2 Brinell hardness test 4 8 Retests 4 9 Rounding of numbers 4 Table 1. Chemic
18、al composition of magnesium alloy ingots 5 Table 2. Chemical composition of magnesium alloy castings 6 Table 3. Mechanical properties of sand cast magnesium alloys 7 Table 4. Mechanical properties of permanent mould cast magnesium alloys 7 Table 5. Mechanical properties of pressure die cast magnesiu
19、m alloys 8 Annex A (informative) Bibliography 8 Annex B (informative) List of international, national and former national European designations corresponding to the European designations 9 Annex C (informative) Additional information regarding the manganese and iron contents 10Page 3 EN 1753 : 1997
20、BSI 1997 Introduction This European Standard classifies the commercially available magnesium alloys into a number of grades suitable for the applications to which they might be put. Some of the alloys referenced in this standard can be the subject of a patent or of patent applications and their list
21、ing herein is not to be construed in any way as the granting of a licence under such patent rights. 1 Scope This European Standard specifies the chemical composition of magnesium alloy ingots. It also specifies the chemical composition of magnesium alloy castings. It also specifies the mechanical pr
22、operties of separately cast samples of these alloys (see clause 6). By agreement, it also specifies the mechanical properties of magnesium alloy castings determined from samples cut from a casting. 2 Normative references This standard incorporates by dated or undated reference, provisions from other
23、 publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision.
24、For undated references the latest edition of the publication referred to applies. EN 1559-5 Founding Technical conditions of delivery Part 5: Additional requirements for magnesium alloy castings EN 10002-1 Metallic materials Tensile testing Part 1: Method of test (at ambient temperature) EN 10003-1
25、Metallic materials Brinell hardness test Part 1: Test method ISO 31-0 : 1992 Quantities and units Part 0: General principles NOTE. Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex A.
26、 3 Designation 3.1 Material The material shall be designated either by symbol or by number as given in tables 1 to 5. NOTE 1. The material number designation and the material symbol designation are in accordance with EN 1754. NOTE 2. A list of international, national and former national European des
27、ignations corresponding to the European designations is given in annex B. NOTE 3. The materials for aerospace applications referred to in European Standards prepared by AECMA (Association Europe enne des Constructeurs de Mate riel Ae rospatial) have different designations. 3.2 Temper designation The
28、 following symbols for temper designation shall be used: F as cast; T4 solution heat-treated and naturally aged; T5 as cast and artificially aged; T6 solution heat-treated and artificially aged. NOTE. Examples of the use of these designations are given in EN 1559-5. 3.3 Casting process designation T
29、he following symbols shall be used for the designation of the different casting processes: S sand casting; K permanent mould casting; D pressure die casting; L investment casting. NOTE. Examples of the use of these designations are given in EN 1559-5. 4 Requirements 4.1 Chemical composition The chem
30、ical composition of magnesium alloy ingots shall conform to the requirements for the appropriate material given in table 1. The chemical composition of magnesium alloy castings shall conform to the requirements for the appropriate material given in table 2. NOTE. For additional information regarding
31、 the manganese and iron contents see annex C. 4.2 Mechanical properties of castings The mechanical properties obtained from test pieces prepared from separately cast samples for sand castings and permanent mould castings shall meet the requirements given in tables 3 and 4. As appropriate, the tests
32、shall be carried out in accordance with clause 7. NOTE 1. Mechanical properties obtained from test pieces prepared from separately cast samples for investment castings are not specified as experience is limited. As a general rule they are similar to those for permanent mould castings. NOTE 2. The va
33、lues obtained from test pieces cut from castings can differ from the minimum values specified in the tables because of variation in structure arising from differences in section thickness and soundness. NOTE 3. The mechanical properties obtained from test pieces prepared from separately cast samples
34、 for pressure die castings are very dependent upon injection parameters. Therefore, the properties given in table 5 are for guidance only. The Brinell hardness test shall be carried out on porosity free areas of castings or on a test piece which has not been stressed. 4.3 Frequency of testing The fr
35、equency of testing shall be in accordance with EN 1559-5.Page 4 EN 1753 : 1997 BSI 1997 5 Sampling Conditions for sampling, formation of batches and frequency of verification shall be as specified in EN 1559-5. 6 Test pieces 6.1 Design The design of test pieces shall be subject to an agreement betwe
36、en the manufacturer and the purchaser. 6.2 Test pieces obtained from separately cast samples 6.2.1 Sand cast samples Test pieces may be in the machined or unmachined condition. The following conditions shall apply: samples shall be cast in sand moulds and without artificial chilling; the minimum dia
37、meter of the test piece shall be 12 mm; the gauge length and the parallel length shall conform to EN 10002-1. 6.2.2 Permanent mould cast samples Test pieces may be in the machined or unmachined condition. The following conditions shall apply: the minimum diameter of the test piece shall be 12 mm; th
38、e gauge length and parallel length shall conform to EN 10002-1. 6.2.3 Pressure die cast samples The following condition shall apply: the surface of the test pieces shall be as cast. 6.2.4 Investment cast samples Test pieces may be in the machined or unmachined condition. The following conditions sha
39、ll apply: the minimum diameter of the test piece shall be 5 mm; the gauge length and parallel length shall conform to EN 10002-1. 6.3 Test pieces cut from castings The geometry and location of test pieces cut from castings shall be specified by agreement between the manufacturer and the purchaser. W
40、hen it is agreed between the manufacturer and the purchaser to use circular cross-section test pieces, the minimum diameter shall be 4 mm. 7 Test methods 7.1 Tensile test Tensile tests shall be carried out in accordance with EN 10002-1. 7.2 Brinell hardness test Brinell hardness tests shall be carri
41、ed out in accordance with EN 10003-1. NOTE. A 5 mm ball diameter is recommended. By agreement between the manufacturer and the purchaser a smaller ball diameter may be used for thin wall castings. 8 Retests Retests shall be carried out in accordance with EN 1559-5. 9 Rounding of numbers The number r
42、epresenting the result for any value specified in this standard shall be expressed to the same number of decimal places as the corresponding number in this standard. The rounding of numbers shall meet the requirements of B.3, rule A or B, of ISO 31-0 : 1992. The choice shall be left to the discretio
43、n of the manufacturer, unless the use of one of the rules is agreed by the time of acceptance of the order.Page 5 EN 1753 : 1997 BSI 1997 Table 1. Chemical composition of magnesium alloy ingots Alloy group Material designation Composition in % (mass fraction) Symbol Number Element Mg Al Zn Mn RE 1)
44、Zr Ag Y Li Si Fe Cu Ni Others each MgAlZn ENMBMgAl8Zn1 ENMB21110 min. Rem. 7,2 0,45 0,17 max. 8,5 0,9 0,05 0,004 0,025 0,001 0,01 ENMBMgAl9Zn1(A) ENMB21120 min. Rem. 8,5 0,45 0,17 max. 9,5 0,9 0,05 0,004 0,025 0,001 0,01 ENMBMgAl9Zn1(B) ENMB21121 min. Rem. 8,0 0,3 max. 10,0 1,0 0 , 3 0,03 0,20 0,01
45、0,05 MgAlMn ENMBMgAl2Mn ENMB21210 min. Rem 1,7 0,35 max. 2,5 0,20 0,05 0,004 0,008 0,001 0,01 ENMBMgAl5Mn ENMB21220 min. Rem. 4,5 0,27 max. 5,3 0,20 0,05 0,004 0,008 0,001 0,01 ENMBMgAl6Mn ENMB21230 min. Rem. 5,6 0,23 max. 6,4 0,20 0,05 0,004 0,008 0,001 0,01 MgAlSi ENMBMgAl2Si ENMB21310 min. Rem. 1
46、,9 0,20 0 , 7 max. 2,5 0,20 1 , 2 0,004 0,008 0,001 0,01 ENMBMgAl4Si ENMB21320 min. Rem. 3,7 0,20 0 , 7 max. 4,8 0,20 1 , 2 0,004 0,008 0,001 0,01 MgZnCu ENMBMgZn6Cu3Mn ENMB32110 min. Rem. 5,5 0,25 2 , 4 max. 6,5 0,75 0,20 0,05 3,0 0,01 0,01 MgZnREZr 2) ENMBMgZn4RE1Zr ENMB35110 min. Rem. 3,5 1,0 0,1
47、 max. 5,0 0,15 1,75 1,0 0,01 0,01 0,03 0,005 0,01 ENMBMgRE3Zn2Zr ENMB65120 min. Rem. 2,0 2,4 0,1 max. 3,0 0,15 4,0 1,0 0,01 0,01 0,03 0,005 0,01 MgREAgZr 3) ENMBMgRE2Ag2Zr ENMB65210 min. Rem. 2,0 0,1 2,0 max. 0,2 0,15 3,0 1,0 3,0 0,01 0,01 0,03 0,005 0,01 ENMBMgRE2Ag1Zr ENMB65220 min. Rem. 1,5 0,1 1
48、,3 0,05 max. 0,2 0,15 3,0 1,0 1,7 0,01 0,01 0,10 0,005 0,01 MgYREZr 4) ENMBMgY5RE4Zr ENMB95310 min. Rem. 1,5 0,1 4,75 max. 0,20 0,15 4,0 1,0 5,5 0,20 0,01 0,01 0,03 0,005 0,01 ENMBMgY4RE3Zr ENMB95320 min. Rem. 2,4 0,1 3,7 max. 0,20 0,15 4,4 1,0 4,3 0,20 0,01 0,01 0,03 0,005 0,01 1) RE = Rare earth metals 2) Cerium rich 3) Neodymium rich 4) Neodymium and heavy RE rich BSI 1997 Page 6 EN 1753 : 1997 Table 2. Chemical composition of magnesium alloy casti
