EN 573-1:2004

Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation system

This document specifies a European designation system of wrought aluminium and aluminium alloys, based on an international designation system, and the procedure to obtain such international designation.
It is in accordance with the "Recommendation" dated December 15, 1970, as revised in March 2002, for an International Designation System for Wrought Aluminum and Wrought Aluminum Alloys issued by the Aluminum Association, Washington DC 20006, USA.
This standard applies to wrought products and to ingots intended to be wrought.

Aluminium und Aluminiumlegierungen - Chemische Zusammensetzung und Form von Halbzeug - Teil 1: Numerisches Bezeichnungssystem

Dieses Dokument legt ein Europäisches Bezeichnungssystem für Aluminium und Aluminium-Knetlegierungen
auf der Grundlage eines internationalen Bezeichnungssystems fest sowie die Verfahrensweise zur Erlangung
dieser internationalen Bezeichnung.
Es entspricht der von der Aluminum Association, Washington D.C. 20006, USA, herausgegebenen �Empfeh-
lungis vom 15. Dezember 1970, in der überarbeiteten Fassung von März 2002, für ein Internationales Be-
zeichnungssystem für Aluminium und Aluminium-Knetlegierungen.
Diese Norm gilt für Kneterzeugnisse und für das entsprechende Vormaterial (z. B. Walz- und Pressbarren
oder Knetvormaterial für Schmiedestücke).

Aluminium et alliages d'aluminium - Composition chimique et forme des produits corroyés - Partie 1 : Système de désignation numérique

Ce document décrit un système européen de désignation de l�aluminium et des alliages d�aluminium corroyés,
conforme au système de désignation international et à la procédure pour obtenir une telle désignation
internationale.
Elle est conforme à la « Recommandation » du 15 décembre 1970, révisée en mars 2002, pour un Système
international de désignation pour l´aluminium et les alliages d´aluminium Corroyés, émise par l´Aluminium
Association, Washington DC 20006, États-Unis.
Cette norme s´applique aux produits corroyés et aux billettes destinés à être corroyés.

Aluminij in aluminijeve zlitine - Kemična sestava in oblika gnetenih izdelkov - 1. del: Sistem številčnega označevanja

General Information

• Status: Published
• Publication Date: 02-Nov-2004
• Withdrawal Date: 30-May-2005
• ICS: 71.120.10 - Reaction vessels and their components
• ICS: 77.150.10 - Aluminium products
• Technical Committee: CEN/TC 132 - Aluminium and aluminium alloys
• Drafting Committee: WG 36 - Rolled products
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2025
• Completion Date: 02-Dec-2025
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 573-1:2005 - Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation system

Relations

• Replaces: EN 573-1:1994 - Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation system
• Effective Date: 22-Dec-2008

Overview

EN 573-1:2004 - "Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation system" (CEN) defines the European numerical designation system for wrought aluminium and aluminium alloys. It is aligned with the Aluminum Association’s international recommendation and applies to wrought products and ingots intended to be wrought. The standard prescribes the structure of designations (prefix, letters and a four‑digit international number), the classification of alloy groups, and the registration procedures for new alloys, modifications and national variations.

Key topics and requirements

• Designation format: European designations are formed as EN A W-xxxx, where:
  • EN = European standard prefix
  • A = aluminium
  • W = wrought products
  • xxxx = four‑digit international designation (example: EN AW-5052, EN AW-5154A)
• Four‑digit numerical system & alloy groups:
  • 1xxx: Commercially pure aluminium (≥ 99.00 % Al)
  • 2xxx: Copper alloys
  • 3xxx: Manganese alloys
  • 4xxx: Silicon alloys
  • 5xxx: Magnesium alloys
  • 6xxx: Magnesium–silicon alloys
  • 7xxx: Zinc alloys
  • 8xxx: Other elements
  • 9xxx: Unused series
• 1xxx group specifics: Last two digits indicate minimum aluminium percentage (to 0.01 %). Second digit signals impurity control or special variants.
• Registration procedure: Requests for international registration must be submitted to The Aluminum Association by a signatory of the Declaration of Accord (per the “Teal Sheets” procedure).
• Alloy modifications: Defined numeric limits specify how much the arithmetic mean of alloying element limits can change for a modification to be registered (e.g., up to 0.15 % change for means up to 1.0 %, increasing with higher mean values).
• National variations: Identified by a trailing letter (A, B, C…, omitting I, O, Q). Allowed differences and maximum variation thresholds mirror modification rules but are treated as national variants rather than new alloys.

Applications and users

EN 573-1:2004 is essential for:

• Material specifiers and procurement teams creating aluminium material call‑outs
• Aluminium producers and millers assigning or applying standard designations
• Product designers and mechanical engineers selecting alloys for wrought components
• Quality control and test laboratories verifying compliance with designation and composition
• National standards bodies and regulators harmonizing alloy naming with the international registry

Keywords: EN 573-1:2004, aluminium alloys designation, numerical designation system, wrought aluminium, CEN standard, Aluminum Association, alloy groups, registration rules.

Related standards

Part of the EN 573 series:

• EN 573-2: Chemical symbol based designation system
• EN 573-3: Chemical composition
• EN 573-4: Forms of products
• prEN 573-5: Codification of standardized wrought products

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2005
1DGRPHãþD
SIST EN 573-1:1998
$OXPLQLMLQDOXPLQLMHYH]OLWLQH.HPLþQDVHVWDYDLQREOLNDJQHWHQLKL]GHONRY
GHO6LVWHPãWHYLOþQHJDR]QDþHYDQMD
Aluminium and aluminium alloys - Chemical composition and form of wrought products -
Part 1: Numerical designation system
Aluminium und Aluminiumlegierungen - Chemische Zusammensetzung und Form von
Halbzeug - Teil 1: Numerisches Bezeichnungssystem
Aluminium et alliages d'aluminium - Composition chimique et forme des produits
corroyés - Partie 1 : Systeme de désignation numérique
Ta slovenski standard je istoveten z: EN 573-1:2004
ICS:
77.040.30 Kemijska analiza kovin Chemical analysis of metals
77.150.10 Aluminijski izdelki Aluminium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 573-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 71.120.10; 77.150.10 Supersedes EN 573-1:1994
English version
Aluminium and aluminium alloys - Chemical composition and
form of wrought products - Part 1: Numerical designation system
Aluminium et alliages d'aluminium - Composition chimique Aluminium und Aluminiumlegierungen - Chemische
et forme des produits corroyés - Partie 1 : Système de Zusammensetzung und Form von Halbzeug - Teil 1:
désignation numérique Numerisches Bezeichnungssystem
This European Standard was approved by CEN on 26 August 2004.

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 without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 573-1:2004: E
worldwide for CEN national Members.

Contents
page
Foreword.3
1 Scope .4
2 International registration procedure.4
3 Basis for European designation.4
4 Four-digit numerical system.5
4.1 Alloy groups .5
4.2 1xxx group.5
4.3 2xxx to 8xxx groups .5
5 Registration rules for alloy modifications.6
6 Registration rules for national variations .7
Bibliography .8

Foreword
This document (EN 573-1:2004) has been prepared by Technical Committee CEN/TC 132 “Aluminium and
aluminium alloys”, the 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 or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the
latest by May 2005.
This document supersedes EN 573-1:1994. It contains only minor modifications which clarify its technical
content without modifying it.
This standard is part of set of five standards. The other standards deal with:
EN 573-2, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 2: Chemical symbol based designation system.
EN 573-3, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 3: Chemical composition.
EN 573-4, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 4: Forms of products.
prEN 573-5, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 5: Codification of standardized wrought products.
The wording has been clarified in accordance with the "International Alloy Designations and Chemical
Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys".
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
1 Scope
This document specifies a European designation system of wrought aluminium and aluminium alloys, based
on an international designation system, and the procedure to obtain such international designation.
It is in accordance with the "Recommendation" dated December 15, 1970, as revised in March 2002, for an
International Designation System for Wrought Aluminum and Wrought Aluminum Alloys issued by the
Aluminum Association, Washington DC 20006, USA.
This standard applies to wrought products and to ingots intended to be wrought.
2 International registration procedure
All requests for international re
...