1、BSI Standards PublicationBS EN 1754:2015Magnesium and magnesiumalloys Designation systemfor anodes, ingots and castings Material symbols andmaterial numbersBS EN 1754:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1754:2015. Itsupersedes BS EN 1754:1997 wh
2、ich is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/111, Steel Castings and Forgings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions
3、of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 84746 2ICS 77.150.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、the authority of theStandards Policy and Strategy Committee on 31 August 2015.Amendments issued since publicationDate Text affectedBS EN 1754:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1754 August 2015 ICS 77.150.20 Supersedes EN 1754:1997English Version Magnesium and magnesium alloys
5、- Designation system for anodes, ingots and castings - Material symbols and material numbers Magnsium et alliages de magnsium - Systme de dsignation pour les anodes, lingots et pices moules - Dsignation symbolique et numrique Magnesium und Magnesiumlegierungen - Bezeichnungssystem fr Anoden, Blockme
6、talle und Gussstcke - Werkstoffkurzzeichen und WerkstoffnummernThis European Standard was approved by CEN on 27 June 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard with
7、out any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
8、language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, De
9、nmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITT
10、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1754:2015 EBS EN 1754:2015EN
11、 1754:2015 (E) 2 Contents Page European foreword .3 Introduction .4 1 Scope 5 2 Terms and definitions .5 3 Designation by numbers .5 3.1 General 5 3.2 Structure of the designation .5 4 Designation by symbols .6 4.1 General 6 4.2 Structure of the designation .7 Annex A (normative) Overall structure f
12、or designation by numbers 9 Annex B (normative) Overall structure for designation by symbols 10 Annex C (informative) Significant technical changes between this European Standard and the previous edition 11 Bibliography . 12 BS EN 1754:2015EN 1754:2015 (E) 3 European foreword This document (EN 1754:
13、2015) 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 identical text or by endorsement, at the latest by February 2016 and conflicti
14、ng national standards shall be withdrawn at the latest by February 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document
15、 supersedes EN 1754:1997. Annex C provides details of significant technical changes between this European Standard and the previous edition. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 1 “Technical conditions of delivery and cast material designation” to revi
16、se EN 1754:1997, Magnesium and magnesium alloys - Magnesium and magnesium alloy anodes, ingots and castings - Designation system. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
17、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
18、witzerland, Turkey and the United Kingdom. BS EN 1754:2015EN 1754:2015 (E) 4 Introduction Magnesium and magnesium alloy anodes, ingots and castings can be designated either by numbers or by symbols for all grades. In this revised standard, a designation system by number, similar to that described in
19、 EN 10027-2 1, is specified. BS EN 1754:2015EN 1754:2015 (E) 5 1 Scope This European Standard specifies a material designation system for magnesium and magnesium alloys either by numbers or by symbols for castings including anodes and ingots intended for remelting. The designation system by numbers
20、is only applicable to standardized magnesium and magnesium alloys (see 2.1). The designation system by symbols is applicable to a) standardized magnesium and magnesium alloys (see 2.1); b) non-standardized magnesium and magnesium alloys (see 2.2). NOTE 1 The standardized designation by symbols does
21、not necessarily imply that the material is standardized. NOTE 2 Magnesium and magnesium alloys for aerospace applications referred to in European Standards prepared by AECMA (fr: Association Europenne des Constructeurs de Matriel Arospatial) have different designations. 2 Terms and definitions For t
22、he purposes of this document, the following terms and definitions apply. 2.1 standardized magnesium and magnesium alloy magnesium and magnesium alloy specified in a European Standard 2.2 non-standardized magnesium and magnesium alloy magnesium and magnesium alloy not specified in a European Standard
23、 3 Designation by numbers 3.1 General There shall be only one designation by number for each magnesium grade or each magnesium alloy. The designation system by numbers is based on the principles and the structure as set out in EN 10027-2 1. 3.2 Structure of the designation 3.2.1 Overall structure Th
24、e designation shall comprise six characters. The positions shall be in accordance with Table 1: Table 1 Number structure Position 1 2 3 4 5 6 Character n . n n n n n: Arabic number The whole structure of the designation by numbers is shown in Table A.1. BS EN 1754:2015EN 1754:2015 (E) 6 3.2.2 Positi
25、ons 1, 2 and 3 Position 1 is the main group number, which is “3” for non-ferrous light metals, followed by a “dot” in position 2. Position 3 is the material group number, which is “5” for magnesium. 3.2.3 Position 4 To specify the product form, the appropriate number given in Table 2 shall be used.
26、Table 2 Product form Product form Number Anode 1 Ingot 2 Casting 3 3.2.4 Position 5 To specify the alloy group the appropriate number given in Table 3 shall be used. Table 3 Alloy group Alloy group Number Mg 0 MgAl, MgAlZn 1 MgAlMn, MgAlSi, MgAlRE a2 MgMn, MgZnCu 3 MgZr, MgZnZr, MgZnREZr a4 MgREAgZr
27、 a, MgREGdZr a5 MgYREZr a6 MgZnThZr 7 Vacant 8 Vacant 9 aRE: Rare earth elements. 3.2.5 Position 6 A 1-digit character from “0” to “9” representing an individual material shall be used. These numbers will be allocated by CEN/TC 190. 4 Designation by symbols 4.1 General There shall be only one design
28、ation by symbols for each magnesium grade or each magnesium alloy. BS EN 1754:2015EN 1754:2015 (E) 7 4.2 Structure of the designation 4.2.1 Overall structure The designation by symbols is based on chemical symbols, usually followed by numbers indicating the minimum or nominal content of each conside
29、red element. There shall be no spaces between any of the used positions. Position 1: Prefix “EN-” (see 4.2.2); Position 2: Symbol “M” for magnesium; Position 3: Symbol for “product form” (see 4.2.3); Position 4: Symbol “Mg”; A coded designation for classification by chemical composition (see 4.2.4).
30、 The whole structure of the designation system by symbols is shown in Table B.1. 4.2.2 Position 1 The prefix “EN-“ shall only be used for standardized materials. NOTE If the European material standard (e.g. EN 1753 2) is presented in association with the material symbol (e.g. EN-MCMgAl2Mn), then the
31、 prefix “EN” of the symbol designation can be omitted (e.g. EN 1753-MCMgAl2Mn). 4.2.3 Position 3 To specify the product form, the appropriate symbol given in Table 4 shall be used. Table 4 Product form Product form Symbol Anode A Ingot B Casting C 4.2.4 Coded designation 4.2.4.1 Unalloyed magnesium
32、The coded designation for unalloyed magnesium consists of the chemical symbol “Mg” for magnesium (position 4) followed by its minimum mass fraction in percent expressed to one or two decimal places, as applicable. EXAMPLE EN-MBMg99,75 BS EN 1754:2015EN 1754:2015 (E) 8 4.2.4.2 Magnesium alloys Magnes
33、ium alloys shall be code designated by Mg (position 4) followed by the chemical symbols of the main element or elements. These symbols are usually followed by figures which express the mass fraction of the element concerned in percent. When several alloying elements are required in the designation,
34、they shall be arranged in decreasing order of mass fraction in percent. The number of alloying elements in the designation shall not be greater than 4. EXAMPLE 1 EN-MCMgAl8Zn1 EXAMPLE 2 EN-MBMgAl5Mn BS EN 1754:2015EN 1754:2015 (E) 9 Annex A (normative) Overall structure for designation by numbers Th
35、is annex shows the overall structure of the material numbers designation in accordance with Clause 3. All of the positions are mandatory. Table A.1 Overall structure for the designation by numbers Position 1 and 2 Position 3 Position 4 Position 5 Position 6 Main group Material group Product form All
36、oy group Individual material name number name number name number symbol number numbering number Non-ferrouslightmetals3. Magnesium5 Anode Ingot Casting 1 2 3 Mg 0 numbersto be allocated byCEN/TC1900 to 9 MgAl, MgAlZn 1 MgAlMn, MgAlSi, MgAlRE a2 MgMn, MgZnCu 3 MgZr, MgZnZr, MgZnREZr a4 MgREAgZr a, Mg
37、REGdZr a5 MgYREZr a6 MgZnThZr 7 Vacant 8 Vacant 9 aRE: Rare earth elements. BS EN 1754:2015EN 1754:2015 (E) 10 Annex B (normative) Overall structure for designation by symbols This annex shows the overall structure of the material symbols designation according to Clause 4. Table B.1 Overall structur
38、e for the designation by symbols Position 1 mandatory except for 4.2.2 Position 2 mandatory Position 3 mandatory Position 4 mandatory Position 5 etc. Prefix Type of material Product form Main element Chemical composition name symbol designation symbol name symbol material symbol/ number EN- Magnesiu
39、m M Anode Ingot Casting A B C Magnesium Mg Unalloyed magnesium: Minimum mass fraction in percent expressed to one or two decimal places. e.g. 99,75 Mg-alloys: Symbols of the main element or elements, maximum 4, usually followed by figures which express the mass fraction of the element concerned in p
40、ercent. e.g. MgAl8Zn1 MgRE3Zn2Zr BS EN 1754:2015EN 1754:2015 (E) 11 Annex C (informative) Significant technical changes between this European Standard and the previous edition Table C.1 Significant technical changes between this European Standard and the previous edition Clause/Paragraph/ Table/Figu
41、re Change Title of the standard Changed to: “Magnesium and magnesium alloys Designation system for anodes, ingots and castings Material symbols and material numbers” Clause 3 New system, based on the principles and the structure set out in EN 10027-2, for the designation of magnesium and magnesium a
42、lloys by numbers introduced. Table 3 and Table A.1 Seven new alloy groups added: MgAl, MgAlRE, MgMn, MgZr, MgZnZr, MgREGdZr and MgZnThZr. NOTE The technical changes referred to include the significant technical changes from the revised EN but are not an exhaustive list of all modifications from the
43、previous version. BS EN 1754:2015EN 1754:2015 (E) 12 Bibliography 1 EN 10027-2, Designation systems for steels - Part 2: Numerical system 2 EN 1753, Magnesium and magnesium alloys - Magnesium alloy ingots and castings This page deliberately left blankBSI is the national body responsible for preparin
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