SIST EN 1753:2019

Magnesium and magnesium alloys - Magnesium alloy ingots and castings

This document defines the grades and the corresponding requirements for cast alloyed magnesium materials.
This document specifies 2 groups of magnesium alloy grades by a classification based on the chemical composition. The first group deals with grades for magnesium alloy ingots. The second group deals with grades for magnesium alloy castings.
This document also specifies mechanical properties measured on test pieces machined from cast samples.
This document does not cover technical delivery conditions for magnesium alloy castings (see EN 1559-1 [7] and EN 1559-5 [8]).

Magnesium und Magnesiumlegierungen - Blockmetalle und Gussstücke aus Magnesiumlegierungen

Dieses Dokument legt die Sorten und die entsprechenden Anforderungen an Gussstücke aus Magnesium-legierungen fest.
Dieses Dokument legt zwei Gruppen von Magnesiumgusslegierungssorten nach der Einordnung anhand der chemischen Zusammensetzung fest. Die erste Gruppe behandelt Sorten für Blockmetalle aus Magnesium¬legierungen. Die zweite Gruppe behandelt Sorten für Gussstücke aus Magnesiumlegierungen.
Dieses Dokument legt außerdem die mechanischen Eigenschaften fest, die an Proben, die aus Probestücken hergestellt wurden, ermittelt wurden.
Dieses Dokument deckt nicht die technischen Lieferbedingungen für Gussstücke aus Magnesium-legierungen (siehe EN 1559 1 [7] und EN 1559 5 [8]) ab.

Magnésium et alliages de magnésium - Lingots et pièces moulées en alliages de magnésium

Le présent document spécifie les nuances et les exigences correspondantes pour les matériaux moulés en alliages de magnésium.
Le présent document spécifie deux groupes de nuances d’alliages de magnésium moulé, en utilisant une classification basée sur la composition chimique. Le premier groupe concerne les nuances pour lingots en alliages de magnésium. Le second groupe concerne les nuances pour les pièces moulées en alliages de magnésium.
Le présent document spécifie aussi les propriétés mécaniques déterminées sur des éprouvettes usinées, préparées à partir d’échantillons coulés.
Le présent document ne couvre pas les conditions techniques de fourniture des pièces moulées en alliages de magnésium (voir l’EN 1559-1 [7] et l’EN 1559-5 [8]).

Magnezij in magnezijeve zlitine - Ingoti in ulitki iz magnezijevih zlitin

Ta dokument določa razrede in ustrezne zahteve za materiale iz litij magnezijevih zlitin. Ta dokument določa 2 skupini razredov magnezijevih zlitin z razvrstitvijo, ki temelji na kemijski sestavi. Prva skupina obravnava razrede za ingote iz magnezijevih zlitin. Druga skupina obravnava razrede za ulitke iz magnezijevih zlitin. Ta dokument določa tudi mehanske lastnosti, izmerjene na strojno obdelanih preskusnih primerkih iz litih vzorcev. Ta dokument ne zajema tehničnih dobavnih pogojev za ulitke iz magnezijevih zlitin (glej standarda EN 1559-1 [7] in EN 1559-5 [8]).

General Information

• Status: Published
• Public Enquiry End Date: 19-Sep-2018
• Publication Date: 06-Oct-2019
• ICS: 77.150.20 - Magnesium products
• Technical Committee: IFEK - Ferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Oct-2019
• Due Date: 09-Dec-2019
• Completion Date: 07-Oct-2019
• Ref Project: EN 1753:2019 - Magnesium and magnesium alloys - Magnesium alloy ingots and castings

Relations

• Replaces: SIST EN 1753:1998 - Magnesium and magnesium alloys - Magnesium alloy ingots and castings
• Effective Date: 02-Oct-2019
• Replaces: SIST EN 1753:1998/AC:2004 - Magnesium and magnesium alloys - Magnesium alloy ingots and castings
• Effective Date: 02-Oct-2019
• Revised: SIST EN 1753:1998 - Magnesium and magnesium alloys - Magnesium alloy ingots and castings
• Effective Date: 20-Sep-2017

Overview

EN 1753:2019 - published by CEN - is the European standard that defines grades and requirements for magnesium alloy ingots and castings. It classifies cast magnesium alloys into two groups (ingots and castings) based on chemical composition, gives material designation rules (symbol or number), and specifies mechanical properties measured on test pieces machined from cast samples. EN 1753:2019 replaces EN 1753:1997 and aligns designation practices with EN 1754 and EN 10027‑2.

Key topics and technical requirements

• Scope and classification
  • Two groups of grades: magnesium alloy ingots and magnesium alloy castings, defined by chemical composition tables (Tables 1 and 2).
• Material designation
  • Materials may be designated by symbol or number consistent with EN 1754; Annex A compares EN and ISO designations (ISO 16220).
• Chemical composition
  • Composition limits for alloying and trace elements are given per grade; Annex B and C provide additional guidance on Mn/Fe and maximum trace contents.
• Mechanical properties
  • Tensile properties and guidance Brinell hardness values are specified for castings; properties are measured on test pieces machined from cast samples (see Tables 3–5).
  • Special notes on variability: pressure die cast properties depend on injection parameters; investment casting data are limited.
• Sampling and test methods
  • Sampling rules, test procedures and standards referenced include EN ISO 6892‑1 (tensile testing) and EN ISO 6506‑1 (Brinell hardness).
• Designation of casting process and temper
  • Process symbols: S (sand), K (permanent mould), D (pressure die), L (investment).
  • Tempers: F (as cast), T4, T5, T6 for solution/ageing conditions.
• Ordering and manufacture
  • Purchaser must supply the document number, material designation and any special requirements; manufacturer chooses production method but must meet standard requirements.
• Exclusions
  • EN 1753 does not cover technical delivery conditions for castings - see EN 1559‑1 and EN 1559‑5.

Applications and users

• Who uses EN 1753:2019:
  • Foundry engineers, materials engineers and metallurgists specifying magnesium alloy ingots and castings.
  • Quality and inspection teams performing chemical, tensile and hardness testing.
  • Procurement/specification authors and OEMs in automotive, electronics, consumer goods and light‑weight structural components where magnesium castings are used.
• Practical use:
  • Selecting appropriate alloy grade for casting process and intended mechanical performance.
  • Defining contract requirements and inspection criteria between purchaser and manufacturer.
  • Supporting material traceability and conformity documentation (e.g., EN 10204 inspection certificates).

Related standards

• EN 1559‑1, EN 1559‑5 (technical delivery conditions for magnesium castings)
• EN 1754 (designation system)
• ISO 16220 (magnesium alloy designations)
• EN ISO 6892‑1 (tensile test), EN ISO 6506‑1 (Brinell hardness)
• EN 10204 (inspection documents)

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN 1753:1998
SIST EN 1753:1998/AC:2004
Magnezij in magnezijeve zlitine - Ingoti in ulitki iz magnezijevih zlitin
Magnesium and magnesium alloys - Magnesium alloy ingots and castings
Magnesium und Magnesiumlegierungen - Blockmetalle und Gussstücke aus
Magnesiumlegierungen
Magnésium et alliages de magnésium - Lingots et pièces moulées en alliages de
magnésium
Ta slovenski standard je istoveten z: EN 1753:2019
ICS:
77.150.20 Magnezijevi izdelki Magnesium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1753
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 77.150.20 Supersedes EN 1753:1997
English Version
Magnesium and magnesium alloys - Magnesium alloy
ingots and castings
Magnésium et alliages de magnésium - Lingots et Magnesium und Magnesiumlegierungen - Blockmetalle
pièces moulées en alliages de magnésium und Gussstücke aus Magnesiumlegierungen
This European Standard was approved by CEN on 5 August 2019.

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 CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1753:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Designation. 6
5 Order information . 7
6 Manufacture . 7
7 Requirements . 7
8 Sampling . 20
9 Test methods . 22
10 Retests . 24
11 Inspection documentation . 24
Annex A (informative) Comparison of material designations for magnesium alloy ingots
and castings according to EN 1754 [5] and ISO 16220 [4]. 25
Annex B (informative) Additional information regarding the manganese and iron content. 28
Annex C (informative) Additional information regarding maximum content of alloying and
trace elements in ingots and castings . 29
Annex D (informative) Significant technical changes between this European Standard and
the previous edition . 30
Bibliography . 31

European foreword
This document (EN 1753:2019) 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 2020, and conflicting national standards shall
be withdrawn at the latest by March 2020.
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 1753:1997.
Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 9 “Cast
magnesium” to revise:
EN 1753:1997, Magnesium and magnesium alloys — Magnesium alloy ingots and castings
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Introduction
This document classifies cast magnesium alloys into a number of grades suitable for the applications for
which they might be used.
Sixteen new grades as specified in National [1] [2] [3] or International Standards [4] have been added.
In this standard a new designation system by number, as established in EN 1754 [5], is given.
NOTE This designation system by number is based on the structure and rules of EN 10027-2 [6] and so
corresponds with the European numbering system for steel and other materials.
1 Scope
This document specifies the grades and the corresponding requirements for cast alloyed magnesium
materials.
This document specifies two groups of cast magnesium alloy grades by a classification based on the
chemical composition. The first group deals with grades for magnesium alloy ingots. The second group
deals with grades for magnesium alloy castings.
This document also specifies mechanical properties measured on test pieces machined from cast
samples.
This document does not cover technical delivery conditions for magnesium alloy castings (see
EN 1559-1 [7] and EN 1559-5 [8]).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1)
EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO
6892-1)
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.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
cast sample
quantity of material cast to represent the cast material
Note 1 to entry: This includes separately cast samples, side by side cast samples and cast-on samples.
[SOURCE: EN 1563:2018, definition 3.5]
3.2
separately cast sample
sample cast in a separate mould under representative manufacturing conditions and material grade
[SOURCE: EN 1563:2018, definition 3.6]
3.3
side-by-side cast sample
sample cast in the mould alongside the casting, with a joint running system
[SOURCE: EN 1563:2018, definition 3.7]
3.4
cast-on sample
sample attached directly to the casting
[SOURCE: EN 1563:2018, definition 3.8]
3.5
test piece
part of the sample, with specified dimensions, machined or unmachined, brought to a required
condition for submission to a given test
[SOURCE: EN 1559-1:2011, definition 3.15]
4 Designation
4.1 Material
The material shall be designated either by symbol or by number as given in Tables 1, 2, 3, 4 or 5.
NOTE 1 The material symbol and number designations are in accordance with EN 1754 [5].
NOTE 2 The comparison of EN 1753 grade designations with the designations from the ISO standard for
magnesium alloy ingots and castings, ISO 16220 [4], is given in Annex A, Table A.1 and Table A.2.
NOTE 3 The materials for aerospace applications referred to in European Standards prepared by ASD-STAN
(AeroSpace and Defence Industries Association of Europe - Standardization) have different designations.
4.2 Casting process
The following symbols shall be used for the designation of the different casting processes:
— S sand casting;
— K permanent mould casting;
— D pressure die casting;
— L investment casting.
NOTE Examples of the use of these designations are given in EN 1559-5 [8].
4.3 Temper
The following symbols for temper designation shall be used:
— F as cast;
— T4 solution heat-treated and naturally aged;
— T5 as cast and artificially aged;
— T6 solution heat-treated and artificially aged.
NOTE Examples of the use of these designations are given in EN 1559-5 [8].
5 Order information
The following information shall be supplied by the purchaser:
a) the number of this document;
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 [7] and
EN 1559-5 [8].
6 Manufacture
The method of producing magnesium alloy ingots and castings shall be left to the discretion of the
manufacturer who shall ensure that the requirements of this document are met for the material grade
specified in the order.
All agreements between the manufacturer and the purchaser shall be made by the time of the
acceptance of the order.
7 Requirements
7.1 Chemical composition
The chemical composition of magnesium alloy ingots shall conform to the requirements for the
appropriate material grade given in Table 1.
The chemical composition of magnesium alloy castings shall conform to the requirements for the
appropriate material grade given in Table 2.
If not otherwise specified in the enquiry and order, the chemical composition of the ingot or casting
shall relate to that of the cast samples taken from the melt at the time of pouring.
NOTE 1 For additional information regarding the manganese and iron contents, see Annex B.
NOTE 2 For additional information regarding the maximum content of alloying and trace elements in ingots
and castings, see Annex C.
7.2 Tensile properties of castings
7.2.1 Test pieces machined from cast samples or as cast test pieces
The mechanical properties obtained from test pieces prepared from cast samples for sand castings and
permanent mould castings shall meet the requirements given in Tables 3 and 4. As appropriate, the
tests shall be carried out in accordance with Clause 9.
NOTE 1 Mechanical properties obtained from test pieces prepared from cast samples for investment castings
are not specified as experience is limited. As a general rule they are similar to those for permanent mould castings.
NOTE 2 The mechanical properties obtained from test pieces prepared from separately cast samples for
pressure die castings are very dependent upon injection parameters. Therefore, the properties given in Table 5
are for guidance only.
NOTE 3 Tensile testing requires sound test pieces in order to guarantee pure uni-axial stress during the test.
7.2.2 Test pieces machined from samples cut from a casting
If applicable, the manufacturer and the purchaser shall agree on:
— the location(s) on a casting where the sample(s) shall be taken;
— the mechanical properties that shall be determined;
— the minimum values, or allowable range of values, for these mechanical properties (for information,
see Table 3 and 4, NOTE 1).
NOTE 1 The properties of castings may not be uniform, depending on the complexity of the castings and
variation in their section thickness.
NOTE 2 Mechanical properties for test pieces cut from a casting are affected not only by material properties
(subject of this standard) but also by the local casting soundness (not subject of this standard).
7.3 Hardness of castings
Guidance values for Brinell hardness of castings are given in Tables 3, 4 and 5.
The Brinell hardness test shall be carried out on porosity free areas of castings or on a test piece which
has not been stressed.
7.4 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 (see EN 1559-5 [8]).

Table 1 — Chemical composition of magnesium alloy ingots
Material designation Composition in % (mass fraction)
Alloy
Min. or Others
group
a b
Symbol Number Mg Al Zn Mn RE Zr Ag Y Gd Li Th Si Fe Cu Ni
max each
min. Rem. 5,5 - 0,1 - - - - - - - - - - - -
MgAl EN-MBMgAl6 3.5210
max. - 6,5 0,20 0,4 - - - - - - - 0,20 0,05 0,20 0,01 0,05
min. Rem. 2,0 0,2 0,1 - - - - - - - - - - - -
EN-MBMgAl2Zn 3.5211
max. - 2,5 0,8 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 2,6 0,7 0,1 - - - - - - - - - - - -
EN-MBMgAl3Zn1 3.5212
max. - 3,5 1,4 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 5,5 0,7 0,1 - - - - - - - - - - - -
EN-MBMgAl6Zn1 3.5213
max. - 6,5 1,4 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 5,0 2,0 0,1 - - - - - - - - - - - -
MgAlZn EN-MBMgAl6Zn3 3.5214
max. - 7,0 3,5 - - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 7,2 0,45 0,17 - - - - - - - - - - - -
EN-MBMgAl8Zn1 3.5215
max. - 8,5 0,9 - - - - - - - - 0,05 0,004 0,025 0,001 0,01
min. Rem. 8,5 0,45 0,17 - - - - - - - - - - - -
EN-MBMgAl9Zn1(A) 3.5216
max. - 9,5 0,9 - - - - - - - - 0,05 0,004 0,025 0,001 0,01
min. Rem. 8,0 0,3 - - - - - - - - - - - - -
EN-MBMgAl9Zn1(B) 3.5217
max. - 10,0 1,0 - - - - - - - - 0,3 0,03 0,20 0,01 0,05
min. Rem. 1,7 - 0,35 - - - - - - - - - - - -
EN-MBMgAl2Mn 3.5220
max. - 2,5 0,2 - - - - - - - - 0,05 0,004 0,008 0,001 0,01
min. Rem. 4,5 - 0,27 - - - - - - - - - - - -
EN-MBMgAl5Mn 3.5221
max. - 5,3 0,2 - - - - - - - - 0,05 0,004 0,008 0,001 0,01
MgAlMn
min. Rem. 5,6 - 0,23 - - - - - - - - - - - -
EN-MBMgAl6Mn 3.5222
max. - 6,4 0,2 - - - - - - - - 0,05 0,004 0,008 0,001 0,01
min. Rem. 6,6 - 0,20 - - - - - - - - - - - -
EN-MBMgAl7Mn 3.5223
max. - 7,4 0,2 - - - - - - - - 0,05 0,004 0,008 0,001 0,01
Material designation Composition in % (mass fraction)
Alloy
Min. or Others
group
a b
Symbol Number Mg Al Zn Mn RE Zr Ag Y Gd Li Th Si Fe Cu Ni
max each
min. Rem. 1,9 - 0,20 - - - - - - - 0,7 - - - -
EN-MBMgAl2Si 3.5225
max. - 2,5 0,2 - - - - - - - - 1,2 0,004 0,0008 0,001 0,01
MgAlSi
min. Rem. 3,7 - 0,20 - - - - - - - 0,7 - - - -
EN-MBMgAl4Si 3.5226
max. - 4,8 0,2 - - - - - - - - 1,2 0,004 0,008 0,001 0,01
min. Rem. 3,6 - 0,15 3,6 - - - - - - - - - - -
e,h
MgAlRE EN-MBMgAl4RE4 3.5228
max. - 4,4 0,20 0,50 4,6 - - - - - - 0,08 0,004 0,008 0,001 0,01
min. Rem. - - 0,50 - - - - - - - - - - - -
EN-MBMgMn1 3.5230
max. - 0,01 0,05 1,3 - - - - - - - 0,05 0,02 0,02 0,001 0,05
MgMn
min. Rem. - - 1,20 - - - - - - - - - - - -
EN-MBMgMn2 3.5231
max. - 0,01 0,05 2,5 - - - - - - - 0,05 0,02 0,02 0,001 0,05
min. Rem. - 5,5 0,25 - - - - - - - - - 2,4 - -
MgZnCu EN-MBMgZn6Cu3Mn 3.5232
max. - - 6,5 0,75 - - - - - - - 0,20 0,05 3,0 0,01 0,01
min. Rem. - - - - 0,3 - - - - - - - - - -
MgZr EN-MBMgZr 3.5240
max. - - 0,10 0,15 - 0,8 - - - - - 0,01 0,01 0,03 0,005 0,01
Material designation Composition in % (mass fraction)
Alloy
Min. or Others
group
a b
Symbol Number Mg Al Zn Mn RE Zr Ag Y Gd Li Th Si Fe Cu Ni
max each
min. Rem. - 2,5 - - 0,4 - - - - - - - - - -
EN-MBMgZn3Zr 3.5241
max. - - 4,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 3,5 - - 0,4 - - - - - - - - - -
MgZnZr EN-MBMgZn5Zr 3.5242
max. - - 5,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 5,5 - - 0,4 - - - - - - - - - -
EN-MBMgZn6Zr 3.5243
max. - - 6,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 3,5 - 1, 0 0,1 - - - - - - - - - -
EN-MBMgZn4RE1Zr 3.5246
max. - - 5,0 0,15 1,75 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
c
MgZnREZr
min. Rem. - 2,0 - 2,4 0,1 - - - - - - - - - -
EN-MBMgRE3Zn2Zr 3.5247
max. - - 3,0 0,15 4,0 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - - - 1,5 0,1 1,3 - - - - - - 0,05 - -
EN-MBMgRE2Ag1Zr 3.5250
max. - - 0,2 0,15 3,0 1,0 1,7 - - - - 0,01 0,01 0,10 0,005 0,01
min. Rem. - - - 2,0 0,1 2,0 - - - - - - - - -
d
MgREAgZr EN-MBMgRE2Ag2Zr 3.5251
max. - - 0,2 0,15 3,0 1,0 3,0 - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - - - 1,7 0,1 - - - - - - - - - -
EN-MBMgAg3RE2Zr 3.5252
max. - - 0,10 0,15 2,5 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 0,20 - 2,6 0,4 - - 1,0 - - - - - - -
e
MgREGdZr EN-MBMgRE3Gd1Zr 3.5256
max. - - 0,50 0,03 3,1 1,0 0,05 - 1,7 - - 0,010 0,01 0,0020 0,01 0,01
min. Rem. - - - 2,4 0,1 - 3,7 - - - - - - - -
EN-MBMgY4RE3Zr 3.5260
max. - - 0,2 0,15 4,4 1,0 - 4,3 - 0,2 - 0,01 0,01 0,03 0,005 0,01
f,g
MgYREZr
min. Rem. - - - 1,5 0,1 - 4,75 - - - - - - - -
EN-MBMgY5RE4Zr 3.5261
max. - - 0,2 0,15 4,0 1,0 - 5,5 - 0,2 - 0,01 0,01 0,03 0,005 0,01
Material designation Composition in % (mass fraction)
Alloy
Min. or Others
group
a b
Symbol Number Mg Al Zn Mn RE Zr Ag Y Gd Li Th Si Fe Cu Ni
max each
min. Rem. - 1,7 - - 0,4 - - - - 2,5 - - - - -
EN-MBMgTh3Zn2Zr 3.5270
max. - - 2,5 0,15 0,1 1,0 - - - - 3,5 0,01 0,01 0,03 0,005 0,01
MgZnThZr
min. Rem. - 5,0 - - 0,4 - - - - 1,5 - - - - -
EN-MBMgZn6Th2Zr 3.5271
max. - - 6,0 0,15 0,1 1,0 - - - - 2,3 0,01 0,01 0,03 0,005 0,01
a
For maximum manganese content, see Annex B.
b
RE: rare earth.
c
Cerium rich.
d
Neodymium rich.
e
Neodymium is 2,6 % to 3,1 %; other rare earth elements may also be present to a total maximum of 0,4 %. These RE shall principally be cerium, lanthanum and praseodymium.
f
Neodymium and heavy RE rich.
g
Improved corrosion resistance may be obtained by reducing the maximum manganese content to 0,3 %, the maximum iron content to 0,01 %, the maximum copper content to
0,02 % and the maximum zinc + silver content to 0,2 %.
h
RE/Al ratio > 0,9.
Table 2 — Chemical composition of magnesium alloy castings
Material designation Casting Composition in % (mass fraction)
Fe/Mn
j
Alloy group process
Min. or Others
h
a b ratio
Symbol Number Mg Al Zn Zr Ag Y Gd Li Th Si Fe Cu Ni
Mn RE
max. each
min. Rem. 5,5 - 0,1 - - - - - - - - - - - -
MgAl EN-MCMgAl6 3.5310 D -
max. - 6,5 0,20 0,4 - - - - - - - 0,20 0,05 0,20 0,01 0,05
min. Rem. 2,0 0,2 0,1 - - - - - - - - - - - -
EN-MCMgAl2Zn 3.5311 D -
max. - 2,5 0,8 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 2,6 0,7 0,1 - - - - - - - - - - - -
EN-MCMgAl3Zn1 3.5312 D -
max. - 3,5 1,4 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 5,5 0,7 0,1 - - - - - - - - - - - -
EN-MCMgAl6Zn1 3.5313 D -
max. - 6,5 1,4 0,4 - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 5,0 2,0 0,1 - - - - - - - - - - - -
EN-MCMgAl6Zn3 3.5314 S, K, L -
max. - 7,0 3,5 - - - - - - - - 0,30 0,05 0,20 0,01 0,05
min. Rem. 7,0 0,35 0,1 - - - - - - - - - - - -
MgAlZn EN-MCMgAl8Zn1 3.5315 D -
max. - 8,7 1,0 - - - - - - - - 0,10 0,005 0,030 0,002 0,01
min. Rem. 7,0 0,40 0,1 - - - - - - - - - - - -
EN-MCMgAl8Zn1 3.5315 S, K, L -
max. - 8,7 1,0 - - - - - - - - 0,20 0,005 0,030 0,001 0,01
min. Rem. 8,3 0,35 0,1 - - - - - - - - - - - -
EN-MCMgAl9Zn1(A) 3.5316 D 0,032
max. - 9,7 1,0 - - - - - - - - 0,10 0,005 0,030 0,002 0,01
min. Rem. 8,3 0,40 0,1 - - - - - - - - - - - -
EN-MCMgAl9Zn1(A) 3.5316 S, K, L 0,032
max. - 9,7 1,0 - - - - - - - - 0,20 0,005 0,030 0,001 0,01
min. Rem. 8,0 0,3 - - - - - - - - - - - - -
EN-MCMgAl9Zn1(B) 3.5317 D, S, K, L -
max. - 10,0 1,0 - - - - - - - - 0,3 0,03 0,20 0,01 0,05
Material designation Casting Composition in % (mass fraction)
Fe/Mn
j
Alloy group process
Min. or Others h
a b ratio
Symbol Number Mg Al Zn Zr Ag Y Gd Li Th Si Fe Cu Ni
Mn RE
max. each
min. Rem. 1,6 - 0,1 - - - - - - - - - - - -
EN-MCMgAl2Mn 3.5320 D 0,012
max. - 2,6 0,2 - - - - - - - - 0,10 0,005 0,010 0,002 0,01
min. Rem. 4,4 - 0,1 - - - - - - - - - - - -
EN-MCMgAl5Mn 3.5321 D 0,015
max. - 5,5 0,2 - - - - - - - - 0,10 0,005 0,010 0,002 0,01
MgAlMn
min. Rem. 5,5 - 0,1 - - - - - - - - - - - -
EN-MCMgAl6Mn 3.5322 D 0,021
max. - 6,5 0,2 - - - - - - - - 0,10 0,005 0,010 0,002 0,01
min. Rem. 6,5 - 0,1 - - - - - - - - - - - -
EN-MCMgAl7Mn 3.5323 D -
max. - 7,5 0,2 - - - - - - - - 0,10 0,005 0,010 0,002 0,01
min. Rem. 1,8 - 0,1 - - - - - - - 0,7 - - - -
EN-MCMgAl2Si 3.5325 D 0,022
max. - 2,6 0,2 - - - - - - - - 1,2 0,005 0,010 0,002 0,01
MgAlSi
min. Rem. 3,5 - 0,1 - - - - - - - 0,7 - - - -
EN-MCMgAl4Si 3.5326 D 0,022
max. - 5,0 0,2 - - - - - - - - 1,2 0,005 0,010 0,002 0,01
min. Rem. 3,5 - 0,15 3,5 - - - - - - - - - - -
c,i
EN-MCMgAl4RE4 3.5328 D -
MgAlRE
max. - 4,5 0,20 0,50 4,5 - - - - - - 0,08 0,005 0,008 0,001 0,01
min. Rem. - - 0,50 - - - - - - - - - - - -
EN-MCMgMn1 3.5330 S, K, L -
max. - 0,01 0,05 1,3 - - - - - - - 0,05 0,02 0,02 0,001 0,05
MgMn
min. Rem. - - 1,20 - - - - - - - - - - - -
EN-MCMgMn2 3.5331 S, K, L -
max. - 0,01 0,05 2,5 - - - - - - - 0,05 0,02 0,02 0,001 0,05
min. Rem. - 5,5 0,25 - - - - - - - - - 2,4 - -
MgZnCu EN-MCMgZn6Cu3Mn 3.5332 S, K, L -
max. - - 6,5 0,75 - - - - - - - 0,20 0,05 3,0 0,01 0,01
min. Rem. - - - - 0,3 - - - - - - - - - -
MgZr EN-MCMgZr 3.5340 S, K, L -
max. - - 0,10 0,15 - 0,8 - - - - - 0,01 0,01 0,03 0,005 0,01
Material designation Casting Composition in % (mass fraction)
Fe/Mn
j
Alloy group process
Min. or Others h
a b ratio
Symbol Number Mg Al Zn Zr Ag Y Gd Li Th Si Fe Cu Ni
Mn RE
max. each
min. Rem. - 2,5 - - 0,4 - - - - - - - - - -
EN-MCMgZn3Zr 3.5341 S, K, L -
max. - - 4,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 3,5 - - 0,4 - - - - - - - - - -
MgZnZr EN-MCMgZn5Zr 3.5342 S, K, L -
max. - - 5,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 5,5 - - 0,4 - - - - - - - - - -
EN-MCMgZn6Zr 3.5343 S, K, L -
max. - - 6,5 0,15 - 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - 3,5 - 0,75 0,4 - - - - - - - - - -
EN-MCMgZn4RE1Zr 3.5346 S, K, L -
max. - - 5,0 0,15 1,75 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
c
MgZnREZr
min. Rem. - 2,0 - 2,5 0,4 - - - - - - - - - -
EN-MCMgRE3Zn2Zr 3.5347 S, K, L -
max. - - 3,0 0,15 4,0 1,0 - - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - - - 1,5 0,4 1,3 - - - - - - 0,05 - -
EN-MCMgRE2Ag1Zr 3.5350 S, K, L -
max. - - 0,2 0,15 3,0 1,0 1,7 - - - - 0,01 0,01 0,10 0,005 0,01
min. Rem. - - - 2,0 0,4 2,0 - - - - - - - - -
d
EN-MCMgRE2Ag2Zr 3.5351 S, K, L -
MgREAgZr
max. - - 0,2 0,15 3,0 1,0 3,0 - - - - 0,01 0,01 0,03 0,005 0,01
min. Rem. - - - 1
...