DIN EN 1753-1997 Magnesium and magnesium alloys - Magnesium alloy ingots and castings German version EN 1753 1997《镁和镁合金 镁合金锭和铸件》.pdf

1、Auaust 1997 DEUTSCHE NORM Magnesium alloy ingots and castings English version of DIN EN 1753 DIN EN 1753 ICs 77.150.20 Descriptors: Magnesium, ingots, castings. Magnesium und Magnesiumlegierungen - Blockmetalle und Gustcke aus Magnesiumlegierungen Supersedes DIN 1729-2, July 1973 edition. European S

2、tandard EN 1753: 1997 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 190. The responsible German body involved in its preparation was the Normenausschu Gieereiwesen (Foundry Practice Standards Committee), Technical

3、 Committee Magnesium-Gulegierungen. Amendments DIN 1729-2, July 1973 edition, has been superseded by the specifications of EN 1753. Previous editions DIN 1717: 1938-05, 1941-12; DIN 1729-2: 1943-11, 1960-04, 1973-07; DIN 1740: 1940-03. EN comprises 12 pages. Q No pari of this standard may be reprodu

4、ced without the prior permission of DIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN EN 1753: 1997-08 Sales No. 11 10 02.98 English price group 10 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.

5、V.- EnglishLicensed by Information Handling ServicesCOPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesEUROPEAN STANDARD NORME EUFIOPEENNE EUROPISCHE NORM EN 1753 June 1997 ICs 77.150.20 Descriptors: Magnesium, ingots, castings. English version Magnesi

6、um and magnesium alloys Magnesium alloy ingots and castings Magnsium et alliages de magnsium - Lingots et pices moules en alliages de magnsium Magnesiumlegierungen Magnesium und Magnesiumlegierungen - Blockmetalle und Gustcke aus This European Standard was approved by CEN on 1997-05-01. CEN members

7、are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions 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

8、 the Central Secretariat or to any CEN member. The European Standards exist in three 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 st

9、atus as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Co

10、mmittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-IO50 Brussels O 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 COPYRIGHT DIN

11、DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 2 EN 1753:1997 Contents Page Page Foreword 2 9 Roundingof numbers 6 Introduction 3 Table 1 : Chemical composition of magnesium alloy ingots . 7 1 Scope . 3 Table 2: Chemical composition of magnesium 2 Normative

12、 references 3 alloy castings 8 3 Designation . 3 Table 3: Mechanical properties of sand 3.1 Material 3 cast magnesium alloys 9 . . 3.2 Temper designation . 4 3.3 Casting process designation 4 Table 4: Mechanical properties of 4 Requirements 4 alloys . 9 4.1 Chemical composition 4 4.2 Mechanical prop

13、erties of castings 4 Table 5: Mechanical properties of pressure 4.3 Frequency of testing . 5 die cast magnesium alloys . 1 o permanent mould cast magnesium 5 Sampling . 5 Annex A (informative) Bibliography . 1 O 6 Test pieces . 5 Annex B (informative) List of international, 6.1 Design 5 national and

14、 former national European 6.2 Test pieces obtained from separately cast samples . 5 European designations . 11 6.3 Test pieces cut from castings 6 7 Testmethods 6 regarding the manganese and iron 7.1 Tensile test . 6 7.2 Brinell hardness test . 6 designations corresponding to the Annex C (informativ

15、e) Additional information contents . 12 8 Retests 6 Foreword This European Standard has been prepared by Technical Committee CEN/TC 190 “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

16、identical text or by endorsement, at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 3.1 O “Cast magnesium“ to prepare the following standard: EN 17

17、53 Magnesium and magnesium alloys - Magnesium alloy ingots and castings According to the CENKENELEC 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

18、, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 3 EN 1753:1997 Introduction This European Standard classifies the c

19、ommercially 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 listing herein is not to be construed in any way as the granting

20、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 properties of separately cast samples of these alloys (see clau

21、se 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 publications. These normative references are cited at the ap

22、propriate 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. For undated references the latest edition of the publication

23、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 Metallic materials - Brinell hardness test - Part 1

24、: Test method IS0 31-0:1992 Quantities and units - Part O: 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. 3 Designation 3.1 Material The material shall

25、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 designations corresponding to the European design

26、ations is given in annex B. NOTE 3: The materials for aerospace applications referred to in European Standards prepared by AECMA (Association Europenne des Constructeurs de Matriel Arospatial) have different designations. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Informat

27、ion Handling ServicesPage 4 EN 1753:1997 3.2 Temper designation The 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 t

28、hese designations are given in EN 1559-5. 3.3 Casting process designation The 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 de

29、signations are given in EN 1559-5. 4 Requirements 4.1 Chemical composition The chemical composition of magnesium alloy ingots shall conform to the requirements for the appropriate material given in table I. The chemical composition of magnesium alloy castings shall conform to the requirements for th

30、e appropriate material given in table 2. NOTE: For additional information regarding 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 casti

31、ngs shall meet the requirements given in tables 3 and 4. As appropriate, the tests 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

32、 general rule they are similar to those for permanent mould castings. NOTE 2: The values obtained from test pieces cut from castings can differ from the minimum values specified in the tables because of variation in structure arising from differencesin section thickness and soundness. NOTE 3: The me

33、chanical properties obtained from test pieces prepared from separately cast samples 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 casti

34、ngs or on a test piece which has not been stressed. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 5 EN 1753:1997 4.3 Frequency of testing The frequency of testing shall be in accordance with EN 1559-5. 5 Sampling Conditions for sampling, form

35、ation 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 between the manufacturer and the purchaser. 6.2 Test pieces obtained from separately cast samples 6.2.1 Sand cast samples Test pieces

36、 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 diameter of the test piece shall be 12 mm; - the gauge length and the parallel length shall conform to EN 10002-1. 6.2.2 Perman

37、ent 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; - the gauge length and parallel length shall conform to EN 10002-1. 6.2.3 Pressure die cast samples The following conditio

38、n 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 shall apply: - the minimum diameter of the test piece shall be 5 mm; - the gauge length and parallel length shall confo

39、rm to EN 10002-1. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 6 EN 1753:1997 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 purch

40、aser. When 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

41、 carried out in accordance with EN 10003-1 . NOTE: A 5 mm ball diameter is recommended. By agreement between the manufacturer and the pur- chaser 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 Th

42、e number representing 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 IS0 31 -0:1992, annex 8, clause 8.3, rule A or B. The choice shall be

43、 left to the discretion of the manufacturer, unless the use of one of the rules is agreed by the time of acceptance of the order. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 7 EN 1753:1997 r o w rf m m r Y- E U C 0 lu S O Q C Q C O a o) C O

44、 v) - _- U - .- ci E ci .- u- U z COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 12 EN 1753:1997 Annex C (informative) Additional information regarding the manganese and iron contents Manganese is added to aluminium containing magnesium alloys

45、 in order to reduce the solubility of iron in the liquid condition to values below the specified maximum content of 0,004 % in the ingots. The necessary content of manganese needed for this purpose depends on the solubility of manganese in the liquid condition at the chosen casting temperature of th

46、e specific alloy. At higher casting temperatures, a higher amount of manganese is required. The minimum manganese limits specified for ingots of each alloy relate therefore to an anticipated minimum casting temperature for the ingots. It is recommended to keep the manganese content as low as possibl

47、e since excess additions will reduce the corrosion resistance of the castings. The magnesium alloys are normally processed in equipment made of iron and steel and the casting temperature of the ingots should therefore ideally be chosen to fit the temperature in the final casting process in order to

48、achieve the required composition. Use of higher temperatures in the final casting process can lead to enrichment of the iron content in the melt, whereas lower temperatures force precipitation of manganese containing particles. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling Services