SIST EN 12438:2017
(Main)Magnesium and magnesium alloys - Magnesium alloys for cast anodes
Magnesium and magnesium alloys - Magnesium alloys for cast anodes
This European Standard specifies the grades and the corresponding requirements for magnesium alloys for cast anodes.
This European Standard specifies 2 groups of cast magnesium alloy grades by a classification based on chemical composition. The first group deals with magnesium alloy ingots for anodes. The second group deals with magnesium alloy anode castings.
This European Standard specifies chemical composition, designation, testing and inspection documentation.
This European Standard does not cover technical delivery conditions for magnesium alloy anode castings (see EN 1559-1 [3] and EN 1559-5 [4]).
Magnesium und Magnesiumlegierungen - Magnesiumlegierungen für Gussanoden
Diese Europäische Norm legt die Sorten und die zugehörigen Anforderungen der Magnesium-legierungen für Gussanoden fest.
Diese Europäische Norm legt 2 Gruppen von Magnesiumguss-Legierungssorten, nach der Einordnung anhand der chemischen Zusammensetzung, fest. Die erste Gruppe behandelt Blockmetalle aus Magnesium¬legierungen für Anoden. Die zweite Gruppe behandelt Gussanoden aus Magnesiumlegierungen.
Diese Europäische Norm legt die chemische Zusammensetzung, Bezeichnung, Prüfung und Prüfbe-scheinigung fest.
Diese Europäische Norm legt nicht die Technischen Lieferbedingungen für Gussanoden aus Magnesium¬legierungen fest (siehe EN 1559 1 [3] und EN 1559 5 [4]).
Magnésium et alliages de magnésium - Alliages de magnésium pour anodes coulées
La présente Norme européenne spécifie les nuances et les exigences correspondantes des alliages de magnésium pour anodes coulées.
La présente Norme européenne spécifie 2 groupes de nuances d’alliages de magnésium moulé en utilisant une classification basée sur la composition chimique. Le premier groupe concerne les lingots en alliage de magnésium pour anodes. Le second groupe concerne les anodes coulées en alliage de magnésium.
La présente Norme européenne spécifie la composition chimique, la désignation, les essais et la documentation de contrôle.
La présente Norme européenne ne couvre pas les conditions techniques de fourniture des anodes coulées en alliage de magnésium (voir l'EN 1559-1 [3] et l'EN 1559-5 [4]).
Magnezij in magnezijeve zlitine - Magnezijeve zlitine za lite anode
Ta evropski standard določa razrede in ustrezne zahteve za magnezijeve zlitine za lite anode.
Ta evropski standard določa 2 skupini razredov litih magnezijevih zlitin z razvrstitvijo, ki temelji na kemijski sestavi. Prva skupina opisuje ingote magnezijevih zlitin za anode. Druga skupina opisuje ulitke anod iz magnezijevih zlitin.
Ta evropski standard določa kemijsko sestavo, poimenovanje, preskušanje in pregled dokumentacije.
Ta evropski standard ne zajema tehničnih dobavnih pogojev za ulitke anod iz magnezijevih zlitin (glej standarda EN 1559-1 [3] in EN 1559-5 [4]).
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Magnezij in magnezijeve zlitine - Magnezijeve zlitine za lite anodeMagnesium und Magnesiumlegierungen - Magnesiumlegierungen für GussanodenMagnésium et alliages de magnésium - Alliages de magnésium pour anodes couléesMagnesium and magnesium alloys - Magnesium alloys for cast anodes77.120.20Magnezij in magnezijeve zlitineMagnesium and magnesium alloysICS:Ta slovenski standard je istoveten z:EN 12438:2017SIST EN 12438:2017en01-november-2017SIST EN 12438:2017SLOVENSKI
STANDARDSIST EN 12438:20001DGRPHãþD
SIST EN 12438:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12438
September
t r s y ICS
y yä s t rä t râ
y yä s w rä t r Supersedes EN
s t v u zã s { { zEnglish Version
Magnesium and magnesium alloys æ Magnesium alloys for cast anodes Magnésium et alliages de magnésium æ Alliages de magnésium pour anodes coulées
Magnesium und Magnesiumlegierungen æ Magnesiumlegierungen für Gussanoden This European Standard was approved by CEN on
t July
t r s yä
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 u zã t r s y ESIST EN 12438:2017
EN 12438:2017 (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 . 6 6 Manufacture . 6 7 Requirements . 6 8 Sampling . 9 9 Testing . 9 10 Inspection documentation . 9 11 Packaging and surface protection . 9 Annex A (normative)
Test method for the determination of the electrode potential of galvanic anodes . 10 Annex B (normative)
Test method for the determination of the rate of mass loss of galvanic anodes . 12 Annex C (informative)
Comparison of the designations of magnesium alloy ingots for cast anodes and magnesium alloy cast anodes according to this standard and its previous version . 16 Annex D (informative)
Significant technical changes between this European Standard and the previous edition . 17 Bibliography . 18 SIST EN 12438:2017
EN 12438:2017 (E) 3 European foreword This document (EN 12438:2017) 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 March 2018, and conflicting national standards shall be withdrawn at the latest by March 2018. 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 supersedes EN 12438:1998. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 9 “Cast magnesium” to revise: EN 12438:1998, Magnesium and magnesium alloys — Magnesium alloys for cast anodes Annex D 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 12438:2017
EN 12438:2017 (E) 4 Introduction This European Standard classifies magnesium alloys for cast anodes into a number of grades suitable for the applications for which they might be used. 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 12438:2017
EN 12438:2017 (E) 5 1 Scope This European Standard specifies the grades and the corresponding requirements for magnesium alloys for cast anodes. This European Standard specifies 2 groups of cast magnesium alloy grades by a classification based on chemical composition. The first group deals with magnesium alloy ingots for anodes. The second group deals with magnesium alloy anode castings. This European Standard specifies chemical composition, designation, testing and inspection documentation. This European Standard does not cover technical delivery conditions for magnesium alloy anode castings (see EN 1559-1 [3] and EN 1559-5 [4]). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10204, Metallic products - Types of inspection documents EN ISO 80000-1:2013, Quantities and units - Part 1: General (ISO 80000-1:2009 + Cor 1:2011) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 anode electrode where oxidation reactions take place 3.2 galvanic anode anode attached to a metal object to inhibit the corrosion of the object 4 Designations 4.1 Material The material shall be designated either by symbol or by number as given in Table 1 and Table 2. NOTE The comparison of EN 12438 grade designations with the designations from the previous version of this European Standard is given in Annex C. 4.2 Casting process The following symbols shall be used to indicate the different casting processes: — S Sand casting; — K Permanent mould casting (gravity); — C Continuous casting. NOTE Examples of the use of these designations are given in EN 1559–5 [4]. SIST EN 12438:2017
EN 12438:2017 (E) 6 5 Order information The following information shall be supplied by the purchaser: a) the number of this European Standard; b) the designation of the material; c) any special requirements. All requirements shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order (e.g. technical delivery conditions according to EN 1559-1 [3] and EN 1559-5 [4]). 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 Requirements 7.1 Chemical composition The chemical composition of magnesium alloy ingots for anode castings shall be in accordance with the requirements given in Table 1. The chemical composition of magnesium alloy cast anodes shall be in accordance with the requirements given in Table 2. If not otherwise specified in the enquiry and order, the chemical composition of the ingots or the cast anodes shall relate to that of the samples taken from the melt at the time of pouring. 7.2 General condition of the product The product shall have a clean surface, in accordance with an agreement between the manufacturer and the purchaser, and shall be free from visible and internal imperfections to a level also agreed between the manufacturer and the purchaser. SIST EN 12438:2017
EN 12438:2017 (E) 7 Table 1 — Chemical composition of magnesium alloy ingots for cast anodes Alloy group Material designation Composition % (mass fraction)
Element Mg Al Zn Mn Si Fe Cu Ni Others (each)
Symbol Number
MgAlZn EN-MBMgAl3Zn1 3.5212 min. Rem. 2,6 0,7 0,20 – – – – – max. – 3,5 1,4 1,0 0,30 0,01 0,05 0,001 0,05 EN-MBMgAl6Zn1 3.5213 min. Rem. 5,6 0,7 0,20 – – – – – max. – 6,5 1,4 1,0 0,30 0,01 0,05 0,001 0,05 EN-MBMgAl6Zn3 3.5214 min. Rem. 5,1 2,1 0,20 – – – – – max. – 7,0 4,0 1,0 0,30 0,01 0,05 0,001 0,05 MgMn EN-MBMgMn1 3.5230 min. Rem. – – 0,50 – – – – – max. – 0,01 0,05 1,3 0,05 0,02 0,02 0,001 0,05 EN-MBMgMn2 3.5231 min. Rem. – – 1,20 – – – – – max. – 0,01 0,05 2,5 0,05 0,02 0,02 0,001 0,05 NOTE The material designation is in accordance with EN 1754 [1]. SIST EN 12438:2017
EN 12438:2017 (E) 8 Table 2 — Chemical composition of magnesium alloy cast anodes Alloy group Material designation Casting proces
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.