EN 1780-3:2002
(Main)Aluminium and aluminium alloys - Designation of alloyed aluminium ingots for remelting, master alloys and castings - Part 3: Writing rules for chemical composition
Aluminium and aluminium alloys - Designation of alloyed aluminium ingots for remelting, master alloys and castings - Part 3: Writing rules for chemical composition
This part of prEN 1780 specifies the writing rules for chemical composition of unalloyed aluminium, aluminium alloys and master alloys. Writing rules for unalloyed aluminium are specified in prEN 576. It applies to lingots for remelting and to castings. The five-figure numerical and the chemical symbol based designation systems of materials are specified in prEN 1780-1 and prEN 1780-2, respectively.
Aluminium und Aluminiumlegierungen - Bezeichnung von legiertem Aluminium in Masseln, Vorlegierungen und Gussstücken - Teil 3: Schreibregeln für die chemische Zusammensetzung
Dieser Teil von prEN 1780 legt die Schreibregeln für die chemische Zusammensetzung von Aluminiumlegierungen und Vorlegierungen fest. Schreibregeln für unlegiertes Aluminium sind in prEN 576 festgelegt. Er gilt für Masseln und Gußstücke. Die Bezeichnungssysteme für Werkstoffe auf numerischer Basis, bestehend aus 5 Ziffern bzw. auf Basis der chemischen Symbole sind in prEN 1780-1 bzw. prEN 1780-2 festgelegt.
Aluminium et alliages d'aluminium - Système de désignation applicable aux lingots pour refusion en aluminium allié, aux alliages-mères et aux produits moulés - Partie 3: Règles d'écriture pour la composition chimique
La présente Norme européenne spécifie les règles d'écriture de la composition des lingots pour refusion en aluminium allié, des alliages-mères et des produits moulés. Les règles d'écriture pour les aluminiums non alliés sont spécifiés dans l'EN 576.
Les systèmes de désignation numérique à cinq chiffres et de désignation basée sur les symboles chimiques sont décrits respectivement dans l'EN 1780-1 et l'EN 1780-2.
Aluminij in aluminijeve zlitine – Označevanje legiranih ingotov za pretaljevanje, za predzlitine in ulitke – 3. del: Pravila za zapisovanje kemične sestave
General Information
- Status
- Published
- Publication Date
- 22-Oct-2002
- Withdrawal Date
- 29-Apr-2003
- Technical Committee
- CEN/TC 132 - Aluminium and aluminium alloys
- Drafting Committee
- WG 34 - Casting and recycling
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 19-Jun-2024
- Completion Date
- 23-Sep-2025
Relations
- Effective Date
- 22-Dec-2008
Overview
EN 1780-3:2002 is a CEN (European) standard that sets the writing rules for the chemical composition of alloyed aluminium ingots for remelting, master alloys and castings. It defines how chemical composition limits and analysis results should be recorded and presented, and clarifies sequence and rounding rules to ensure consistent, unambiguous documentation across production, testing and procurement. Note: writing rules for unalloyed aluminium are handled separately in EN 576.
Key topics and requirements
- Scope
- Applies to alloyed aluminium ingots for remelting, master alloys and castings (not unalloyed aluminium).
- Source of composition limits
- Chemical limits referenced from EN 575, EN 1676 and EN 1706.
- Numeric presentation rules
- Standard formats for percentage by mass depending on magnitude (examples given for <0.001 %, 0.001–0.01 %, 0.01–0.10 %, 0.10–0.55 %, >0.55 %).
- Sequence for listing elements
- For alloyed ingots and castings: Silicon, Iron, Copper, Manganese, Magnesium, Chromium, Nickel, Zinc, Lead, Tin, Titanium, other elements each, other elements total, Aluminium.
- For master alloys: Silicon, Iron, Copper, Manganese, Magnesium, Chromium, Nickel, Zinc, …, Titanium, other elements each, other elements total, Aluminium. Additional elements are inserted alphabetically by chemical symbol between Zinc and Titanium or specified in footnotes.
- Aluminium as remainder
- Aluminium content is to be specified as the remainder for aluminium alloys.
- Rounding and compliance
- Specific rounding rules are defined for expressing analytical results to the same decimal places as reference limits:
- If the next digit is <5 → leave unchanged.
- If >5, or =5 followed by non-zero digits → round up.
- If =5 followed by zeros → round to make last digit even (even/odd rule).
- Specific rounding rules are defined for expressing analytical results to the same decimal places as reference limits:
Applications and users
This standard is practical for:
- Aluminium producers and foundries issuing or buying alloyed ingots for remelting, master alloys, and castings
- Metallurgical and quality control laboratories preparing chemical analysis reports
- Procurement/specification authors and compliance officers who need consistent composition notation
- Engineers and metallurgists comparing alloys across suppliers or standards
- Certification bodies and standards committees ensuring uniform documentation
Keywords: EN 1780-3:2002, aluminium alloys, chemical composition writing rules, aluminium ingots for remelting, master alloys, castings, CEN, designation systems.
Related standards
- EN 1780-1 - Numerical designation system
- EN 1780-2 - Chemical symbol based designation system
- EN 575 - Master alloys produced by melting (specifications)
- EN 1676 - Alloyed ingots for remelting (specifications)
- EN 1706 - Castings: chemical composition and mechanical properties
- EN 576 - Unalloyed aluminium ingots writing rules
Frequently Asked Questions
EN 1780-3:2002 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aluminium and aluminium alloys - Designation of alloyed aluminium ingots for remelting, master alloys and castings - Part 3: Writing rules for chemical composition". This standard covers: This part of prEN 1780 specifies the writing rules for chemical composition of unalloyed aluminium, aluminium alloys and master alloys. Writing rules for unalloyed aluminium are specified in prEN 576. It applies to lingots for remelting and to castings. The five-figure numerical and the chemical symbol based designation systems of materials are specified in prEN 1780-1 and prEN 1780-2, respectively.
This part of prEN 1780 specifies the writing rules for chemical composition of unalloyed aluminium, aluminium alloys and master alloys. Writing rules for unalloyed aluminium are specified in prEN 576. It applies to lingots for remelting and to castings. The five-figure numerical and the chemical symbol based designation systems of materials are specified in prEN 1780-1 and prEN 1780-2, respectively.
EN 1780-3:2002 is classified under the following ICS (International Classification for Standards) categories: 77.150.10 - Aluminium products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1780-3:2002 has the following relationships with other standards: It is inter standard links to EN 1780-3:1996. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1780-3:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VWDYHAluminium und Aluminiumlegierungen - Bezeichnung von legiertem Aluminium in Masseln, Vorlegierungen und Gussstücken - Teil 3: Schreibregeln für die chemische ZusammensetzungAluminium et alliages d'aluminium - Systeme de désignation applicable aux lingots pour refusion en aluminium allié, aux alliages-meres et aux produits moulés - Partie 3: Regles d'écriture pour la composition chimiqueAluminium and aluminium alloys - Designation of alloyed aluminium ingots for remelting, master alloys and castings - Part 3: Writing rules for chemical composition77.150.10Aluminijski izdelkiAluminium productsICS:Ta slovenski standard je istoveten z:EN 1780-3:2002SIST EN 1780-3:2004en01-januar-2004SIST EN 1780-3:2004SLOVENSKI
STANDARDSIST EN 1780-3:19981DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1780-3October 2002ICS 77.150.10Supersedes EN 1780-3:2002English versionAluminium and aluminium alloys - Designation of alloyedaluminium ingots for remelting, master alloys and castings - Part3: Writing rules for chemical compositionAluminium et alliages d'aluminium - Système dedésignation applicable aux lingots pour refusion enaluminium allié, aux alliages-mères et aux produits moulés- Partie 3: Règles d'écriture pour la composition chimiqueAluminium und Aluminiumlegierungen - Bezeichnung vonlegiertem Aluminium in Masseln, Vorlegierungen undGussstücken - Teil 3: Schreibregeln für 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 national 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 other 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,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1780-3:2002 ESIST EN 1780-3:2004
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