1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21500-2 SANS 51780-3:2008Edition 2EN 1780-3:2002Edition 2SOUTH AFRICAN NATIONAL STANDARD Aluminium and aluminium alloys Designation of all
4、oyed aluminium ingots for remelting, master alloys and castings Part 3: Writing rules for chemical composition This national standard is the identical implementation of EN 1780-3:2002 and is adopted with the permission of CEN, rue de Stassart 36, B-1050 Brussels. Published by Standards South Africa
5、1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 51780-3:2008 Edition 2 EN 1780-3:2002 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard
6、 was approved by National Committee SABS TC 1078, Engineering materials Non-ferrous metals, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2008. This SANS document supersedes SABS EN 178
7、0-3:1996 (edition 1). EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1780-3October 2002ICS 77.150.10 Supersedes EN 1780-3:1996English versionAluminium and aluminium alloys - Designation of alloyedaluminium ingots for remelting, master alloys and castings - Part3: Writing rules for chemical compos
8、itionAluminium et alliages daluminium - Systme dedsignation applicable aux lingots pour refusion enaluminium alli, aux alliages-mres et aux produits mouls- Partie 3: Rgles dcriture pour la composition chimiqueAluminium und Aluminiumlegierungen - Bezeichnung vonlegiertem Aluminium in Masseln, Vorlegi
9、erungen undGussstcken - Teil 3: Schreibregeln fr die chemischeZusammensetzungThis European Standard was approved by CEN on 2 September 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a nation
10、al standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any othe
11、r language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
12、Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2002 CEN All rights of exp
13、loitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1780-3:2002 EEN 1780-3:2002 (E)2Contentspage1 Scope 42 Normative references 43 Chemical composition limits 44 Writing rules .45 Alloy designations .46 Sequence of elements for the indication of the chemical
14、 composition.56.1 Alloyed aluminium ingots for remelting and castings.56.2 Master alloys 57 Rounding rules for determination of compliance.5Bibliography 6EN 1780-3:2002 (E)3ForewordThis document (EN 1780-3:2002) has been prepared by Technical Committee CEN /TC 132, “Aluminium andaluminium alloys“, t
15、he secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by April 2003, and conflicting national standards shall be withdrawn at the latest byApril 2003.Within its prog
16、ramme of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 1 “Liquid metal,unalloyed and alloyed ingots“ to prepare the following standard :EN 1780-3, Aluminium and aluminium alloys Designation of alloyed aluminium ingots for remelting, master alloysand castings Part 3 : Writing rules for
17、 chemical compositionThis document supersedes EN 1780-3:1996 “Aluminium and aluminium alloys Designation of alloyed aluminiumingots for remelting, master alloys and castings Part 3 : Writing rules for chemical compositionThe difference to the former version is that unalloyed aluminium is removed fro
18、m the scope and provisions dealingwith unalloyed aluminium are deleted.The provisions about the writing rules of unalloyed aluminium have been transferred into the revised version ofEN 576.This European Standard EN 1780, “Aluminium and aluminium alloys Designation of alloyed aluminium ingots forreme
19、lting, master alloys and castings”, comprises of the following parts:Part 1 : Numerical designation systemPart 2 : Chemical symbol based designation systemPart 3 : Writing rules for chemical compositionAccording to the CEN/CENELEC Internal Regulations, the national standards organizations of the fol
20、lowingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.EN 1780-3:2002 (E)41 ScopeThis Europe
21、an Standard specifies the writing rules for chemical composition of alloyed aluminium ingots forremelting, master alloys and castings.Writing rules for unalloyed aluminium are specified in EN 576.The five-figure numerical and the chemical symbol based designation systems of materials are specified i
22、nEN 1780-1 and EN 1780-2, respectively.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references
23、, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 575, Aluminium and aluminium alloys Mas
24、ter alloys produced by melting Specifications.EN 1676, Aluminium and aluminium alloys Alloyed ingots for remelting Specifications.EN 1706, Aluminium and aluminium alloys Castings Chemical composition and mechanical properties.3 Chemical composition limitsThe chemical composition limits are specified
25、 in EN 575, EN 1676 and EN 1706.4 Writing rulesStandard limits for alloying elements and impurities are generally expressed in percentage by mass to the followingplaces (except in certain cases as specified in the standards listed in clause 3) :a) less than 0,001 %. 0,000X ;b) 0,001 % through less t
26、han 0,01 % . 0,00X ;c) 0,01 % through less than 0,10 % . 0,0X ;d) 0,10 % through 0,55 %. 0,XX ;e) over 0,55% . 0,X ; X,X ; XX,X.5 Alloy designationsBoth the five figure based designations and the chemical symbol based designations are used in the tablesappended to the specific European Standards (se
27、e clause 3).EN 1780-3:2002 (E)56 Sequence of elements for the indication of the chemical composition6.1 Alloyed aluminium ingots for remelting and castingsThe limits for the alloying elements and impurities for alloyed aluminium ingots for remelting and castings shall beexpressed in the following se
28、quence: Silicon, Iron, Copper, Manganese, Magnesium, Chromium, Nickel, Zinc,Lead, Tin, Titanium, other elements each, other elements total, Aluminium.6.2 Master alloysThe limits for the alloying elements and impurities for master alloys shall be expressed in the following sequence:Silicon, Iron, Cop
29、per, Manganese, Magnesium, Chromium, Nickel, Zinc, ., Titanium, other elements each, otherelements total, Aluminium. The limits for additional alloying elements and impurities shall be inserted inalphabetical order of their chemical symbols between zinc and titanium, or specified in footnotes.Alumin
30、ium shall be specified as a remainder for aluminium alloys.7 Rounding rules for determination of complianceIn recording chemical analysis test results, the number representing the result for any element specified in thisstandard shall be expressed to the same number of decimal places as the correspo
31、nding number in the referencestandard.The following rounding rules shall be used for determination of compliance with this standard :a) when the figure immediately after the last figure to be retained is less than 5, the last figure to be retainedremains unchanged ;b) when the figure immediately aft
32、er the last figure to be retained is greater than 5, or equal to 5 and followed byat least one figure other than zero, the last figure to be retained is increased by one ;c) when the figure immediately after the last figure to be retained is equal to 5 and followed by zeros only, the lastfigure to b
33、e retained remains unchanged if even and is increased by one if odd.EN 1780-3:2002 (E)6Bibliography1 EN 576, Aluminium and aluminium alloys Unalloyed aluminium ingots for remelting Specifications.2 EN 1780-1, Aluminium and aluminium alloys Designation of alloyed aluminium ingots for remelting,master
34、 alloys and castings Part 1 : Numerical designation system.3 EN 1780-2, Aluminium and aluminium alloys Designation of alloyed aluminium ingots for remelting,master alloys and castings Part 2 : Chemical symbol based designation system. SABSThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
