SIST EN 12421:2017

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Magnezij in magnezijeve zlitine - Nelegirani magnezijMagnesium und Magnesiumlegierungen - ReinmagnesiumMagnésium et alliages de magnésium - Magnésium non alliéMagnesium and magnesium alloys - Unalloyed magnesium77.120.20Magnezij in magnezijeve zlitineMagnesium and magnesium alloysICS:Ta slovenski standard je istoveten z:EN 12421:2017SIST EN 12421:2017en,fr,de01-maj-2017SIST EN 12421:2017SLOVENSKI
STANDARDSIST EN 12421:20001DGRPHãþD



SIST EN 12421:2017



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12421
March
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y yä s t rä t r Supersedes EN
s t v t sã s { { zEnglish Version
Magnesium and magnesium alloys æ Unalloyed magnesiumMagnésium et alliages de magnésium æ Magnésium non allié
Magnesium und Magnesiumlegierungen æ Reinmagnesium This European Standard was approved by CEN on
x January
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egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t v t sã t r s y ESIST EN 12421:2017



EN 12421:2017 (E) 2 Contents Page
European foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Designations. 5 5 Order information . 5 6 Manufacture . 6 7 Requirements . 6 7.1 Chemical composition . 6 7.2 General condition of the product . 6 8 Sampling . 6 8.1 General . 6 8.2 Frequency and number of tests . 6 9 Testing . 6 9.1 Determination of the chemical composition . 6 9.2 Rounding of results of chemical analysis . 6 10 Inspection documentation . 8 11 Marking . 8 12 Packaging and surface protection . 8 13 Complaints . 8 Annex A (informative)
Comparison of cast unalloyed magnesium material designations according to EN 12421 and ISO 8287 [3] . 9 Annex B (informative)
Significant technical changes between this European Standard and the previous edition . 10 Bibliography . 11
SIST EN 12421:2017



EN 12421:2017 (E) 3 European foreword This document (EN 12421:2017) 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 September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12421:1998. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 9 “Cast magnesium” to revise: EN 12421:1998, Magnesium and magnesium alloys — Unalloyed magnesium Annex B provides details of significant technical changes between this European Standard and the previous edition. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12421:2017



EN 12421:2017 (E) 4 Introduction This European Standard classifies cast unalloyed magnesium into a number of grades suitable for the applications for which they might be used. Four new grades of cast unalloyed magnesium, as specified in ISO 8287:2011 [3], has been added. In this European Standard a new designation system by number, as established in EN 1754 [1], is given. NOTE This designation system by number is based on the structure and rules of EN 10027–2 [2] and so corresponds with the European numbering system for steel and other materials. SIST EN 12421:2017



EN 12421:2017 (E) 5 1 Scope This European Standard specifies the grades and corresponding requirements for cast unalloyed magnesium. This European Standard specifies the chemical composition, designation, testing, marking and inspection documentation. 2 Normative references The following documents, in whole o
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