ISO/PRF 3116

• Abstract:

  This document specifies the chemical composition and mechanical properties of magnesium and magnesium alloys for wrought products in the form of bars and solid sections, tubes and hollow sections, forgings, and plate and sheet.

• Status: Not Published
• ICS: 77.120.20 - Magnesium and magnesium alloys
• Technical Committee: ISO/TC 79/SC 5 - Magnesium and alloys of cast or wrought magnesium
• Drafting Committee: ISO/TC 79/SC 5 - Magnesium and alloys of cast or wrought magnesium
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 24-Aug-2026
• Completion Date: 29-Aug-2026

• Revises: ISO 3116:2019 - Magnesium and magnesium alloys — Wrought magnesium and magnesium alloys
• Effective Date: 19-Oct-2024

Overview

ISO/PRF 3116 is the International Standard that specifies the chemical composition and mechanical properties of wrought magnesium and magnesium alloys. Developed by ISO Technical Committee 79/SC 5, this document applies to wrought products in various forms, including:

• Bars and solid sections
• Tubes and hollow sections
• Forgings
• Plate and sheet

The standard provides a unified approach for material designation, temper types, product forms, and conformity requirements regarding magnesium and its alloys. It is an essential reference for manufacturers, engineers, suppliers, and end-users who require reliable and standardized quality for magnesium alloy products.

Key Topics

Material Designation and Alloying Elements

• Alloys are designated using symbols to specify magnesium (Mg) and principal alloying elements such as Al (Aluminium), Zn (Zinc), Ca (Calcium), Mn (Manganese), and others.
• The alloy designation follows a systematic nomenclature reflecting chemical composition and uses codes for alloying elements in decreasing order of their presence.

Temper Designation

• Specifies the thermal and mechanical treatment state of the alloy, using codes like:
  • O (annealed)
  • F (as fabricated)
  • H112, H×2, H×4, H×8 (various levels of strain hardening)
  • T5, T6 (heat-treated conditions)
• These designations help identify the mechanical properties and performance characteristics relevant for specific applications.

Product Forms

• Symbols such as B (bars), T (tubes), F (forgings), and P (plate and sheet) indicate the form in which the magnesium alloy is supplied.

Chemical Composition and Mechanical Properties

• The standard specifies chemical composition ranges and minimum mechanical properties, including:
  • Tensile strength
  • Proof stress (0.2% offset)
  • Elongation

Testing and Sampling

• Outlines the requirements for testing, sampling, and retests, referencing international standards for testing procedures.
• The frequency and conditions of verification are determined by agreement between manufacturer and purchaser.

Applications

Wrought magnesium and magnesium alloys standardized by ISO/PRF 3116 are widely used in industries that value lightweight materials with good strength-to-weight ratios, such as:

• Automotive: Body panels, structural components, and steering wheels that benefit from weight reduction for improved fuel efficiency.
• Aerospace: Aerospace structures, seat frames, and interior parts where high performance and reduced mass are critical.
• Electronics: Casings, frames, and heat sinks for consumer electronics, exploiting magnesium’s lightweight and ease of fabrication.
• Defense and Transportation: Components in military vehicles, railway applications, and ships that require both strength and corrosion resistance.

The standard’s clear definitions help ensure consistency, reliability, and interchangeability of magnesium alloy products globally, supporting product development and international trade.

Related Standards

ISO/PRF 3116 refers to several related international standards for testing, terminology, and temper designations, ensuring comprehensive integration into existing quality systems:

• ISO 80000-1: Quantities and units - General principles
• ISO 6892-1: Metallic materials - Tensile testing at room temperature
• EN 515: Aluminium and aluminium alloys - Temper designations

These related standards help organizations implement ISO/PRF 3116 effectively and maintain process consistency.

---

Adopting ISO/PRF 3116 ensures magnesium and magnesium alloy wrought products meet global benchmarks for quality, safety, and performance, benefiting manufacturers, suppliers, and users across critical industries.

International
Standard
ISO 3116
Sixth edition
Magnesium and magnesium
alloys — Wrought magnesium and
magnesium alloys
Magnésium et alliages de magnésium — Magnésium et alliages
de magnésium corroyés
PROOF/ÉPREUVE
Reference number
ISO 3116:2026(en) © ISO 2026
ISO 3116:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
ISO 3116:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation . 1
4.1 Material .1
4.2 Temper designation .2
4.3 Designations of product form .3
4.4 Designation of ordering .3
5 Requirements . 3
5.1 Chemical composition .3
5.2 Mechanical properties .3
5.3 Frequency of testing .3
6 Sampling . 3
7 Test pieces . 3
8 Test methods . 3
8.1 Chemical composition .3
8.2 Tensile test .4
9 Retests . 4
10 Rounding of results . 4
Annex A (informative) List of national designations corresponding to the ISO designation .24
Annex B (informative) Physical properties of wrought magnesium alloys .26
Annex C (informative) Heat-treatment schedules for wrought magnesium alloys .28
Bibliography .30
PROOF/ÉPREUVE
iii
ISO 3116:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,, Subcommittee
SC 5, Magnesium and alloys of cast or wrought magnesium.
This sixth edition cancels and replaces the fifth edition (ISO 3116:2019), which has been technically revised.
The main change is as follows:
— ISO-MgAl4Ca1 has been added to the text.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
PROOF/ÉPREUVE
iv
ISO 3116:2026(en)
Introduction
This document classifies the commercially available magnesium alloys into a number of grades suitable for
the application to which they can be put.
PROOF/ÉPREUVE
v
International Standard ISO 3116:2026(en)
Magnesium and magnesium alloys — Wrought magnesium
and magnesium alloys
1 Scope
This document specifies the chemical composition and mechanical properties of magnesium and magnesium
alloys for wrought products in the form of bars and solid sections, tubes and hollow sections, forgings and
plate and sheet.
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.
ISO 80000-1:2009, Quantities and units — Part 1: General
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Designation
4.1 Material
The material shall be designated by symbols as given in Table 1 to Table 47.
The designation for alloys shall consist of a prefix character “M”, which represents magnesium, and not more
than three capital letters representing the alloying elements specified in the greatest amount. It shall be
arranged in order of decreasing percentages, or in alphabetical order if of equal percentages, followed by the
respective percentages rounded off to whole numbers and a serial letter in lower case.
The letters used to represent the alloying elements shall be those in Table 1. The third letter is used when
the third largest amount of element is above or equal to 1 wt.%. If the third and fourth largest amount of
elements are above or equal to 1 wt.%, the higher amount of elements is taken; if of equal percentage, the
third letter is decided by the producer who developed the alloy.
PROOF/ÉPREUVE
ISO 3116:2026(en)
Table 1 — Letters representing alloying elements
Letters Element Name of element Letters Element Name of element
A Al Aluminium N Ni Nickel
B Bi Bismuth P Pb Lead
C Cu Copper Q Ag Silver
D Cd Cadmium R Cr Chromium
E RE Rare earth S Si Silicon
F Fe Iron T Sn Tin
H Th Thorium V Gd Gadolinium
J Sr Strontium W Y Yttrium
K Zr Zirconium X Ca Calcium
L Li Lithium Y Sb Antimony
M Mn Manganese Z Zn Zinc
In rounding percentages, the nearest whole number shall be used. If two choices are possible, for example
when the decimal is followed by a 5 only or a 5 followed only by zeros, the nearest even whole number
shall be used. When a range is specified for the alloying element, the rounded mean shall be used in the
designation. When only a minimum percentage is specified for the alloying element, the rounded minimum
percentage shall be used in the designation. For example:
— an aluminium content of 1,2 wt.% is written as A1;
— an aluminium content of 1,5 wt.% is written as A2;
— an aluminium content of 2,5 wt.% to 3,6 wt.% is written as A3;
— an aluminium content of 2,5 wt.% is written as A2.
The serial letter is defined as “a” or “b” when the two compositions have only minor difference.
For example, ISO-MgAl3Zn1(A) is designated as MAZ31a and ISO-MgAl9Ca1Zn1 is designated as MAXZ911.
A list of national designations corresponding to this document is given in Annex A. A table of physical
properties of the listed alloys is given in Annex B.
4.2 Temper designation
The following symbols shall be used for temper designation:
— O: annealed;
— F: as fabricated;
— H × 8: fully hardened (stain hardened to give maximum ultimate tensile strength);
— H × 4: half hardened (stain hardened to give an ultimate tensile strength approximately midway between
that of annealed and H × 8 temper);
— H × 2: quarter hardened (stain hardened to give an ultimate tensile strength approximately midway
between that of annealed and H × 4 temper);
— H112: strain hardened from working at elevated temperature or from a limited amount of cold work, and
for which there are mechanical properties limits;
— T5: cooled from an elevated temperature shaping process and then artificially aged;
— T6: solution heat treated and then artificially aged.
The temper designations shall be in accordance with EN 515.
PROOF/ÉPREUVE
ISO 3116:2026(en)
Details of heat treatments are given in Annex C.
4.3 Designations of product form
The following symbols shall be used for product form:
— B: bars and solid sections;
— T: tubes and hollow sections;
— F: forgings;
— P: plate and sheet.
4.4 Designation of ordering
Designation of ordering shall be specified by symbol or designation, temper and product form. Example is as
follows. In addition, the weight and dimensions shall be specified.
EXAMPLE An order for magnesium bars, conforming to this document, of magnesium alloy MAZ31a, delivered in
the as-fabricated condition (F) is as follows:
ISO 3116 - ISO-MgAl3Zn1 (A) (or MAZ31a) - F - B
5 Requirements
5.1 Chemical composition
The chemical composition of wrought magnesium alloys, taken as cast analysis at the time the material is
cast, shall conform to the requirements for the appropriate material given in Table 2.
5.2 Mechanical properties
The minimum values of the mechanical properties of wrought products in magnesium alloys in the defined
temper conditions shall be as given in Table 3 to Table 48.
5.3 Frequency of testing
The frequency of testing shall be subject to an agreement between the manufacturer and the purchaser.
6 Sampling
Conditions for sampling, formation of batches and frequency of verification shall be subject to an agreement
between the manufacturer and the purchaser.
7 Test pieces
Test pieces shall be taken in the longitudinal direction. For rolled flat products of thickness > 0,6 mm, test
pieces may be taken in the long transverse direction.
8 Test methods
8.1 Chemical composition
Test methods for the determination of chemical composition given in Table 2 shall be performed as agreed
between the supplier and the customer.
PROOF/ÉPREUVE
ISO 3116:2026(en)
8.2 Tensile test
Tensile tests shall be carried out in accordance with ISO 6892-1.
9 Retests
Conditions for retests shall be subject to an agreement between the manufacturer and the purchaser.
10 Rounding of results
The number representing the result for any value specified in this document shall be expressed to the same
number of decimal places as the corresponding number in this document. The rounding of numbers shall
meet the requirements of ISO 80000-1:2009, B.3, rule A or B. The choice shall be left to the discretion of the
manufacturer, unless the use of one of the rules is agreed by the time of acceptance of the order.
PROOF/ÉPREUVE
ISO 3116:2026(en)
PROOF/ÉPREUVE
Table 2 — Chemical composition of wrought magnesium and magnesium alloys
Composition
Material designation
% (mass fraction)
Alloy Product
Oth-
group form
Others
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca Si Fe Cu Ni ers
each
total
min.
ISO- 0,00 0,00
Mg ISO-Mg99.99 MG9999 B 99,99 0,002 0,003 0,002 — — — — — — — 0,002 0,002 0,002 0,01
WD11000 03 03
max.
min. 7,5 0,35 0,15 — 0,01 — — — 0,001 0,02 — — — — — —
a
MgAlAg ISO-MgAl8Ag ISO-WD25110 MAQ80 F,P Rem.
max. 8,5 0,55 0,35 — 0,10 — — — 0,02 0,8Ag 0,05 0,02 0,02 0,001 0,01 0,30
min. 3,5 ― 0,15 ― ― ― ― ― 0,7 ― ― ― ― ― ― ―
a
ISO-MgAl4Ca1 — MAX41 B,T Rem.
max. 4,4 0,30 0,7 ― ― ― ― ― 1,5 ― 0,10 0,005 0,05 0,005 0,05 0,30
min. 4,5 — 0,15 — — — — — 0,7 — — — — — — —
ISO-
a
ISO-MgAl5Ca1 MAX51 B,T Rem.
WD25120
max. 5,4 0,30 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlCa
min. 5,5 — 0,15 — — — — — 0,7 — — — — — — —
ISO-
a
ISO-MgAl6Ca1 MAX61 B,T,P Rem.
WD25130
max. 6,5 0,30 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 — 0,15 — — — — — 1,6 — — — — — — —
a
ISO-MgAl6Ca2 ISO-WD25140 MAX62 B,T,P Rem.
max. 6,5 0,30 0,40 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,5 0,50 0,20 — — 1,0 — — — — — — — — — —
a
MgAlLi ISO-MgAl3Li2 ISO-WD26110 MAL32 P Rem.
max. 3,5 0,8 0,40 — — 3,0 — — — — 0,01 0,005 0,001 5 0,000 5 0,02 0,15
min. 5,5 — 0,15 — — — — — — — — — — — — —
ISO-
a
MgAlMn ISO-MgAl6Mn MAM60 B,T,P Rem.
WD21240
max. 6,5 0,30 0,40 — — — — — — — 0,10 0,005 0,01 0,005 0,05 0,30
min. 0,50 — 0,10 — — — — — — 0,6 — — — — —
ISO-
a
ISO-MgAl1Sn1 MAT11 B,P Rem. 0,004
WD25150
max. 1,2 — 0,30 — — — — — — 1,2Sn 0,01 — — 0,01 0,15
MgAlSn
min. 6,0 — 0,2 — — — — — — 0,7 — — — — — —
ISO-
a
ISO-MgAl6Sn1 MAT61 B,P Rem.
WD25160
max. 6,8 — 0,4 — — — — — — 1,3Sn 0,025 0,005 — — 0,05 0,15
min. 2,5 0 0,6 — — — — — — 0,9 — — — — — —
a
MgAlSr ISO-MgAl3Sr1 ISO-WD21450 MAJ31 B Rem.
max. 3,5 0,25 0,8 — — — — — — 1,5Sr 0,10 0,02 0,05 0,005 0,05 0,15
Key
B = bars and solid sections
T = tubes and hollow sections
F = forgings
P = plates and sheets
RE = neodymium and other heavy rare earth metals
a
Remainder.
b
Zn+Ag.
ISO 3116:2026(en)
PROOF/ÉPREUVE
Table 2 (continued)
Composition
Material designation
% (mass fraction)
Alloy Product
Oth-
group form
Others
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca Si Fe Cu Ni ers
each
total
min. 2,4 0,50 0,15 — — — — — — — — — — — — —
ISO-
a
ISO-MgAl3Zn1(A) MAZ31a B,T,F,P Rem.
WD21150
max. 3,6 1,5 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlZn
min. 2,4 0,5 0,05 — — — — — — — — — — — — —
a
ISO-MgAl3Zn1(B) ISO-WD21151 MAZ31b B,T,F,P Rem.
max. 3,6 1,5 0,4 — — — — — — — 0,10 0,05 0,05 0,005 0,05 0,30
min. 2,5 0,50 0,20 — — — — — — — — — — — — —
ISO-
a
ISO-MgAl3Zn1(C) MAZ31c B, P Rem.
WD21153
max. 3,5 1,5 0,40 — — — — — — — 0,05 0,000 8 — — 0,02 0,15
min. 5,5 0,50 0,15 — — — — — — — — — — — — —
ISO-
a
ISO-MgAl6Zn1 MAZ61 B,T,F, P Rem.
WD21160
max. 6,5 1,5 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlZn
min. 7,8 0,20 0,12 — — — — — — — — — — — — —
a
ISO-MgAl8Zn ISO-WD21170 MAZ80 B,T,F Rem.
max. 9,2 0,8 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 8,6 0,35 0,15 — — — — — — — — — — — — —
ISO-
a
ISO-MgAl9Zn1 MAZ91 B,T Rem.
WD21180
max. 9,5 1,0 0,50 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,4 0,5 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl3Ca1Zn1 ISO-WD22110 MAXZ311 B,T Rem.
max. 3,6 1,0 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 0,5 0,15 — — — — — 0,7 — — — — — — —
ISO-
a
ISO-MgAl6Ca1Zn1 MAXZ611 B,T,P Rem.
WD22120
max. 6,5 1,0 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 0,5 0,15 — — — — — 1,6 — — — — — — —
ISO-
a
ISO-MgAl6Ca2Zn1 MAXZ621 B,T,P Rem.
WD22130
max. 6,5 1,0 0,40 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlCaZn
min. 7,5 0,5 0,15 — — — — — 0,7 — — — — — — —
ISO-
a
ISO-MgAl8Ca1Zn1 MAXZ811 B, P Rem.
WD22140
max. 8,5 1,5 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 8,6 0,35 0,15 — — — — — 0,7 — — — — — — —
ISO-
a
ISO-MgAl9Ca1Zn1 MAXZ911 B,T Rem.
WD22150
max. 9,5 1,0 0,50 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 8,6 0,35 0,15 — — — — — 1,6 — — — — — — —
ISO-
a
ISO-MgAl9Ca2Zn1 MAXZ921 B,T Rem.
WD22160
max. 9,5 1,0 0,50 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
Key
B = bars and solid sections
T = tubes and hollow sections
F = forgings
P = plates and sheets
RE = neodymium and other heavy rare earth metals
a
Remainder.
b
Zn+Ag.
ISO 3116:2026(en)
PROOF/ÉPREUVE
Table 2 (continued)
Composition
Material designation
% (mass fraction)
Alloy Product
Oth-
group form
Others
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca Si Fe Cu Ni ers
each
total
min. — 0,3 — 5,5 — — 0,3 3,0 0,002 0,2 — — — — — —
ISO-
a
ISO-MgGd6Y4Zn1 MVWZ641 F,P Rem.
WD69120
max. — 1,0 — 6,5 — — 0,7 4,5 0,020 1,0Ag 0,05 0,02 0,02 0,001 0,01 0,30
min. — — — 6,5 0,9 — 0,4 4,6 — — — — — — — —
ISO-
a
ISO-MgGd7Y5RE1 MVWE751 B Rem.
WD69130
max. — — — 7,5 1,5 — 1,0 5,7 — — 0,01 — 0,10 0,004 — 0,30
MgGdY
min. — — — 6,5 — — 0,2 5,5 — — — — — — — —
ISO-
a
ISO-MgGd7Y6 MVW76 B Rem.
WD69140
max. — — 0,03 7,5 — 0,2 0,5 6,5 — — 0,01 0,010 0,02 0,005 0,01 0,30
min. — — — 8,0 — — 0,4 2,8 — — — — — — — —
ISO-
a
ISO-MgGd8Y3 MVW83 B,F,P Rem.
WD69150
max. 0,02 0,10 0,05 9,0 — — 0,6 3,5 — — 0,05 0,01 0,02 0,005 0,01 0,15
min. — 1,0 0,6 7,5 — — — 3,5 — — — — — — — —
ISO-
a
MgGdY ISO-MgGd8Y4Zn2 MVWZ842 B,F,P Rem.
WD69160
max. — 2,0 1,0 9,0 — — — 5,0 — — 0,05 0,01 0,02 0,005 0,01 0,15
min. — — — 3,8 — — 0,8 — — — — — — — — —
ISO-
a
MgGdZr ISO-MgGd4Zr1 MVK41 B Rem.
WD69170
max. — — 0,01 4,2 — — 1,2 — — — 0,02 0,01 0,05 0,01 0,03 0,30
min. — 0,5 — — — 8,5 — — — — — — — — — —
ISO-
a
MgLiZn ISO-MgLi9Zn1 MLZ91 B,T,P Rem.
WD96110
max. 0,05 1,5 0,05 — — 9,5 — — 0,05 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,5 2,5 — — — 3,5 — — — — — — — — — —
ISO-
a
ISO-MgLi4Al3Zn3 MLAZ433 P Rem.
WD96120
max. 3,5 3,5 — — — 4,5 — — — — 0,5 0,05 0,05 — 0,05 0,30
MgLiAl
Zn
min. 2,5 2,5 — — — 9,5 — — — — — — — — — —
ISO-
a
ISO-MgLi10Al3Zn3 MLAZ1033 P Rem.
WD96130
max. 3,5 3,5 — — — 10,5 — — — — 0,5 0,05 0,05 — 0,05 0,30
min. — — 1,2 — — — — — — — — — — — — —
ISO-
a
MgMn ISO-MgMn2 MM2 B,T Rem.
WD43150
max. — — 2,0 — — — — — — — 0,10 — 0,05 0,01 0,05 0,30
Key
B = bars and solid sections
T = tubes and hollow sections
F = forgings
P = plates and sheets
RE = neodymium and other heavy rare earth metals
a
Remainder.
b
Zn+Ag.
ISO 3116:2026(en)
PROOF/ÉPREUVE
Table 2 (continued)
Composition
Material designation
% (mass fraction)
Alloy Product
Oth-
group form
Others
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca Si Fe Cu Ni ers
each
total
min. — — — — 2,4 — 0,4 3,7 — — — — — — — —
ISO-
a
ISO-MgY4RE3Zr1(B) MWEK431b B,F Rem.
WD95360 b
max. — 0,20 0,03 — 4,4 0,2 1,0 4,3 — — 0,01 0,01 0,02 0,005 0,01 0,30
min. — — — — 2,4 — 0,4 3,7 — — — — — — — —
ISO-
a
ISO-MgY4RE3Zr(C) MWEK431c B,P Rem.
0,00
WD95370
max. — 0,06 0,03 — 4,4 — 1,0 4,3 — — — 0,005 0,02 0,01 0,30
MgYRE
min. — — — — 1,5 — 0,4 4,75 — — — — — — — —
ISO-
a
ISO-MgY5RE4Zr1 MWEK541 B,F Rem.
Zr
WD95350
a
max. — 0,20 0,03 — 4,0 0,2 1,0 5,5 — — 0,01 0,01 0,02 0,005 0,01 0,30
min. — — — — 0,7 — 0,4 6,7 — — — — — — — —
ISO-
a
ISO-MgY7RE1Zr1 MWEK711 B Rem.
WD95380
max. — — — — 2,0 — 1,0 8,5 — — 0,01 0,05 — 0,004 — 0,30
min. — — — — 0,7 — 0,4 8,2 — — — — — — — —
ISO-
a
ISO-MgY9RE1Zr1 MWEK911 B Rem.
WD95390
max. — — — — 1,9 — 1,0 9,5 — — 0,01 — — 0,004 — 0,30
min. — 2,0 — — — — — 6,2 — — — — — — — —
ISO-
a
ISO-MgY7Zn3 MWZ73 B,T,P Rem.
WD96110
max. — 3,0 — — — — — 7,4 — — 0,10 0,005 0,05 0,005 0,05 0,30
MgYZn
min. — 4,5 — — — — — 6,2 — — — — — — — —
ISO-
a
ISO-MgY7Zn5 MWZ75 B,T,P Rem.
WD96120
max. — 5,5 — — — — — 7,4 — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 0,5 6,0 0,30 — — — — — — — — — 0,5 — — —
a
MgZnAl ISO-MgZn8Al1Cu1 ISO-WD32110 MZAC811 B Rem.
max. 1,5 8,0 0,70 — — — — — — — 0,01 0,01 1,0 0,01 — —
min. — 1,5 — — 0,2 — — — — — — 0,30 — — —
ISO-
a
MgZnCu ISO-MgZn2Cu MZC20 P Rem.
WD32120
max. — 2,5 — — 0,6Ce — — — — — 0,05 0,02 0,6 — 0,01 0,05
min. — 6,0 0,5 — — — — — — — — — 1,0 — — —
MgZn- ISO-
a
ISO-MgZn7Cu1Mn1 MZCM711 B Rem.
CuMn WD32150
max. 0,2 7,0 1,0 — — — — — — — 0,01 0,05 1,5 0,01 0,05 0,30
Key
B = bars and solid sections
T = tubes and hollow sections
F = forgings
P = plates and sheets
RE = neodymium and other heavy rare earth metals
a
Remainder.
b
Zn+Ag.
ISO 3116:2026(en)
PROOF/ÉPREUVE
Table 2 (continued)
Composition
Material designation
% (mass fraction)
Alloy Product
O
...

ISO/DISPRF 3116:2025(en)
ISO/TC 79/SC 5
Secretariat: SAC
Date: 2025-07-102026-08-22
Magnesium and magnesium alloys — Wrought magnesium and
magnesium alloys
Magnésium et alliages de magnésium — Magnésium et alliages de magnésium corroyés
PROOF
ISO /PRF 3116:####(X:2026(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO #### 2026 – All rights reserved
ii
ISO/DISPRF 3116:20252026(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation . 1
4.1 Material . 1
4.2 Temper designation . 2
4.3 Designations of product form . 3
4.4 Designation of ordering . 3
5 Requirements . 3
5.1 Chemical composition . 3
5.2 Mechanical properties . 3
5.3 Frequency of testing . 3
6 Sampling . 3
7 Test pieces . 4
8 Test methods . 4
8.1 Chemical composition . 4
8.2 Tensile test . 4
9 Retests . 4
10 Rounding of results . 4
Annex A (informative) List of national designations corresponding to the ISO designation . 26
Annex B (informative) Physical properties of wrought magnesium alloys . 29
Annex C (informative) Heat-treatment schedules for wrought magnesium alloys . 31
Bibliography . 34

iii
ISO /PRF 3116:####(X:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,, Subcommittee
SC 5, Magnesium and alloys of cast or wrought magnesium.
This sixth edition cancels and replaces the fifth edition (ISO 3116:2019), which has been technically revised.
The main changes arechange is as follows:
— — ISO-MgAl4Ca1 has been added to the text.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO #### 2026 – All rights reserved
iv
ISO/DISPRF 3116:20252026(en)
Introduction
This document classifies the commercially available magnesium alloys into a number of grades suitable for
the application to which they can be put.
v
DRAFT International Standard ISO/DIS 3116:2025(en)

Magnesium and magnesium alloys — Wrought magnesium and
magnesium alloys
1 Scope
This document specifies the chemical composition and mechanical properties of magnesium and magnesium
alloys for wrought products in the form of bars and solid sections, tubes and hollow sections, forgings and
plate and sheet.
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.
ISO 80000--1:2009, Quantities and units — Part 1: General
ISO 6892--1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
4 Designation
4.1 Material
The material shall be designated by symbols as given in Table 1Table 1 to Table 47Table 47.
The designation for alloys shall consist of a prefix character “M”, which represents magnesium, and not more
than three capital letters representing the alloying elements specified in the greatest amount. It shall be
arranged in order of decreasing percentages, or in alphabetical order if of equal percentages, followed by the
respective percentages rounded off to whole numbers and a serial letter in lower case.
The letters used to represent the alloying elements shall be those in Table 1Table 1. The third letter is used
when the third largest amount of element is above or equal to 1 wt.%. If the third and fourth largest amount
of elements are above or equal to 1 wt.%, the higher amount of elements is taken; if of equal percentage, the
third letter is decided by the producer who developed the alloy.
ISO /PRF 3116:####(X:2026(en)
Table 1 — Letters representing alloying elements
Letters Element Name of Letters Element Name of
element element
A Al Aluminium N Ni Nickel
B Bi Bismuth P Pb Lead
C Cu Copper Q Ag Silver
D Cd Cadmium R Cr Chromium
E RE Rare earth S Si Silicon
F Fe Iron T Sn Tin
H Th Thorium V Gd Gadolinium
J Sr Strontium W Y Yttrium
K Zr Zirconium X Ca Calcium
L Li Lithium Y Sb Antimony
M Mn Manganese Z Zn Zinc
In rounding percentages, the nearest whole number shall be used. If two choices are possible, for example
when the decimal is followed by a 5 only or a 5 followed only by zeros, the nearest even whole number shall
be used. When a range is specified for the alloying element, the rounded mean shall be used in the designation.
When only a minimum percentage is specified for the alloying element, the rounded minimum percentage
shall be used in the designation. For example:
— — an aluminium content of 1,2 wt.% is written as A1;
— — an aluminium content of 1,5 wt.% is written as A2;
— — an aluminium content of 2,5 wt.% to 3,6 wt.% is written as A3;
— — an aluminium content of 2,5 wt.% is written as A2.
The serial letter is defined as “a” or “b” when the two compositions have only minor difference.
For example, ISO-MgAl3Zn1(A) is designated as MAZ31a and ISO-MgAl9Ca1Zn1 is designated as MAXZ911.
A list of national designations corresponding to this document is given in Annex AAnnex A. A table of physical
properties of the listed alloys is given in Annex BAnnex B.
4.2 Temper designation
The following symbols shall be used for temper designation:
— — O: annealed;
— — F: as fabricated;
— — H × 8: fully hardened (stain hardened to give maximum ultimate tensile strength);
— — H × 4: half hardened (stain hardened to give an ultimate tensile strength approximately midway
between that of annealed and H × 8 temper);
© ISO #### 2026 – All rights reserved
ISO/DISPRF 3116:20252026(en)
— — H × 2: quarter hardened (stain hardened to give an ultimate tensile strength approximately midway
between that of annealed and H × 4 temper);
— — H112: strain hardened from working at elevated temperature or from a limited amount of cold work,
and for which there are mechanical properties limits.;
— — T5: cooled from an elevated temperature shaping process and then artificially aged;
— — T6: solution heat treated and then artificially aged.
The temper designations shall be in accordance with EN 515.
Details of heat treatments are given in Annex CAnnex C.
4.3 Designations of product form
The following symbols shall be used for product form:
— — B: bars and solid sections;
— — T: tubes and hollow sections;
— — F: forgings;
— — P: plate and sheet.
4.4 Designation of ordering
Designation of ordering shall be specified by symbol or designation, temper and product form. Example is as
follows. In addition, the weight and dimensions shall be specified.
EXAMPLE An order for magnesium bars, conforming to this document, of magnesium alloy MAZ31a, delivered in
the as-fabricated condition (F) is as follows:
EXAMPLE         ISO 3116 - ISO-MgAl3Zn1 (A) (or MAZ31a) - F - B
5 Requirements
5.1 Chemical composition
The chemical composition of wrought magnesium alloys, taken as cast analysis at the time the material is cast,
shall conform to the requirements for the appropriate material given in Table 2Table 2.
5.2 Mechanical properties
The minimum values of the mechanical properties of wrought products in magnesium alloys in the defined
temper conditions shall be as given in Table 3Table 3 to Table 48Table 48.
5.3 Frequency of testing
The frequency of testing shall be subject to an agreement between the manufacturer and the purchaser.
6 Sampling
Conditions for sampling, formation of batches and frequency of verification shall be subject to an agreement
between the manufacturer and the purchaser.
ISO /PRF 3116:####(X:2026(en)
7 Test pieces
Test pieces shall be taken in the longitudinal direction. For rolled flat products of thickness > 0,6 mm, test
pieces may be taken in the long transverse direction.
8 Test methods
8.1 Chemical composition
Test methods for the determination of chemical composition given in Table 2Table 2 shall be performed as
agreed between the supplier and the customer.
8.2 Tensile test
Tensile tests shall be carried out in accordance with ISO 6892-1.
9 Retests
Conditions for retests shall be subject to an agreement between the manufacturer and the purchaser.
10 Rounding of results
The number representing the result for any value specified in this document shall be expressed to the same
number of decimal places as the corresponding number in this document. The rounding of numbers shall meet
the requirements of ISO 80000-1:2009, B.3, rule A or B. The choice shall be left to the discretion of the
manufacturer, unless the use of one of the rules is agreed by the time of acceptance of the order.

© ISO #### 2026 – All rights reserved
ISO/DISPRF 3116:20252026(en)
Table 2 — Chemical composition of wrought magnesium and magnesium alloys
Composition
Material designation
Produ
Alloy % (mass fraction)
ct
group
Others Others
form
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca  Si Fe Cu Ni
each total
min.
0,00 0,00
Mg ISO-Mg99.99 ISO-WD11000 MG9999 B 99,99 0,002 0,003 0,002 — — — — — — — 0,002 0,002 0,002 0,01
03 03
max.
min. 7,5 0,35 0,15 — 0,01 — — — 0,001 0,02 — — — — — —
a
MgAlAg ISO-MgAl8Ag ISO-WD25110 MAQ80 F,P Rem.
max. 8,5 0,55 0,35 — 0,10 — — — 0,02 0,8Ag 0,05 0,02 0,02 0,001 0,01 0,30
min. 3,5 ― 0,15 ― ― ― ― ― 0,7 ― ― ― ― ― ― ―
a
ISO-MgAl4Ca1 — MAX41 B,T Rem.
max. 4,4 0,30 0,7 ― ― ― ― ― 1,5 ― 0,10 0,005 0,05 0,005 0,05 0,30
min. 4,5 — 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl5Ca1 ISO-WD25120 MAX51 B,T Rem.
max. 5,4 0,30 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlCa
min. 5,5 — 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl6Ca1 ISO-WD25130 MAX61 B,T,P Rem.
max. 6,5 0,30 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 — 0,15 — — — — — 1,6 — — — — — — —
a
ISO-MgAl6Ca2 ISO-WD25140 MAX62 B,T,P Rem.
max. 6,5 0,30 0,40 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,5 0,50 0,20 — — 1,0 — — — — — — — — — —
a
MgAlLi ISO-MgAl3Li2 ISO-WD26110 MAL32 P Rem.
max. 3,5 0,8 0,40 — — 3,0 — — — — 0,01 0,005 0,001 5 0,000 5 0,02 0,15
min. 5,5 — 0,15 — — — — — — — — — — — — —
a
MgAlMn ISO-MgAl6Mn ISO-WD21240 MAM60 B,T,P Rem.
max. 6,5 0,30 0,40 — — — — — — — 0,10 0,005 0,01 0,005 0,05 0,30
min. 0,50 — 0,10 — — — — — — 0,6 — — — — —
a
ISO-MgAl1Sn1 ISO-WD25150 MAT11 B,P Rem. 0,004
max. 1,2 — 0,30 — — — — — — 1,2Sn 0,01 — — 0,01 0,15
MgAlSn
min. 6,0 — 0,2 — — — — — — 0,7 — — — — — —
a
ISO-MgAl6Sn1 ISO-WD25160 MAT61 B,P Rem.
max. 6,8 — 0,4 — — — — — — 1,3Sn 0,025 0,005 — — 0,05 0,15
min. 2,5 0 0,6 — — — — — — 0,9 — — — — — —
a
MgAlSr ISO-MgAl3Sr1 ISO-WD21450 MAJ31 B Rem.
max. 3,5 0,25 0,8 — — — — — — 1,5Sr 0,10 0,02 0,05 0,005 0,05 0,15
ISO /PRF 3116:####(X:2026(en)
Composition
Material designation
Produ
% (mass fraction)
Alloy
ct
group
Others Others
form
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca  Si Fe Cu Ni
each total
min. 2,4 0,50 0,15 — — — — — — — — — — — — —
a
ISO-MgAl3Zn1(A) ISO-WD21150 MAZ31a B,T,F,P Rem.
max. 3,6 1,5 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlZn
min. 2,4 0,5 0,05 — — — — — — — — — — — — —
a
ISO-MgAl3Zn1(B) ISO-WD21151 MAZ31b B,T,F,P Rem.
max. 3,6 1,5 0,4 — — — — — — — 0,10 0,05 0,05 0,005 0,05 0,30
min. 2,5 0,50 0,20 — — — — — — — — — — — — —
a
ISO-MgAl3Zn1(C) ISO-WD21153 MAZ31c B, P Rem.
max. 3,5 1,5 0,40 — — — — — — — 0,05 0,000 8 — — 0,02 0,15
min. 5,5 0,50 0,15 — — — — — — — — — — — — —
a
ISO-MgAl6Zn1 ISO-WD21160 MAZ61 B,T,F, P Rem.
max. 6,5 1,5 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
MgAlZn
min. 7,8 0,20 0,12 — — — — — — — — — — — — —
a
ISO-MgAl8Zn ISO-WD21170 MAZ80 B,T,F Rem.
max. 9,2 0,8 0,40 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 8,6 0,35 0,15 — — — — — — — — — — — — —
a
ISO-MgAl9Zn1 ISO-WD21180 MAZ91 B,T Rem.
max. 9,5 1,0 0,50 — — — — — — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,4 0,5 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl3Ca1Zn1 ISO-WD22110 MAXZ311 B,T Rem.
max. 3,6 1,0 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 0,5 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl6Ca1Zn1 ISO-WD22120 MAXZ611 B,T,P Rem.
max. 6,5 1,0 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 5,5 0,5 0,15 — — — — — 1,6 — — — — — — —
a
ISO-MgAl6Ca2Zn1 ISO-WD22130 MAXZ621 B,T,P Rem.
MgAlCaZn max. 6,5 1,0 0,40 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 7,5 0,5 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl8Ca1Zn1 ISO-WD22140 MAXZ811 B, P Rem.
max. 8,5 1,5 0,40 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 8,6 0,35 0,15 — — — — — 0,7 — — — — — — —
a
ISO-MgAl9Ca1Zn1 ISO-WD22150 MAXZ911 B,T Rem.
max. 9,5 1,0 0,50 — — — — — 1,5 — 0,10 0,005 0,05 0,005 0,05 0,30
a
ISO-MgAl9Ca2Zn1 ISO-WD22160 MAXZ921 B,T min. Rem. 8,6 0,35 0,15 — — — — — 1,6 — — — — — — —
© ISO #### 2026 – All rights reserved
ISO/DISPRF 3116:20252026(en)
Composition
Material designation
Produ
% (mass fraction)
Alloy
ct
group
Others Others
form
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca  Si Fe Cu Ni
each total
max. 9,5 1,0 0,50 — — — — — 2,5 — 0,10 0,005 0,05 0,005 0,05 0,30
min. — 0,3 — 5,5 — — 0,3 3,0 0,002 0,2 — — — — — —
a
ISO-MgGd6Y4Zn1 ISO-WD69120 MVWZ641 F,P Rem.
max. — 1,0 — 6,5 — — 0,7 4,5 0,020 1,0Ag 0,05 0,02 0,02 0,001 0,01 0,30
min. — — — 6,5 0,9 — 0,4 4,6 — — — — — — — —
a
ISO-MgGd7Y5RE1 ISO-WD69130 MVWE751 B Rem.
max. — — — 7,5 1,5 — 1,0 5,7 — — 0,01 — 0,10 0,004 — 0,30
MgGdY
min. — — — 6,5 — — 0,2 5,5 — — — — — — — —
a
ISO-MgGd7Y6 ISO-WD69140 MVW76 B Rem.
max. — — 0,03 7,5 — 0,2 0,5 6,5 — — 0,01 0,010 0,02 0,005 0,01 0,30
min. — — — 8,0 — — 0,4 2,8 — — — — — — — —
a
ISO-MgGd8Y3 ISO-WD69150 MVW83 B,F,P Rem.
max. 0,02 0,10 0,05 9,0 — — 0,6 3,5 — — 0,05 0,01 0,02 0,005 0,01 0,15
min. — 1,0 0,6 7,5 — — — 3,5 — — — — — — — —
a
MgGdY ISO-MgGd8Y4Zn2 ISO-WD69160 MVWZ842 B,F,P Rem.
max. — 2,0 1,0 9,0 — — — 5,0 — — 0,05 0,01 0,02 0,005 0,01 0,15
min. — — — 3,8 — — 0,8 — — — — — — — — —
a
MgGdZr ISO-MgGd4Zr1 ISO-WD69170 MVK41 B Rem.
max. — — 0,01 4,2 — — 1,2 — — — 0,02 0,01 0,05 0,01 0,03 0,30
min. — 0,5 — — — 8,5 — — — — — — — — — —
a
MgLiZn ISO-MgLi9Zn1 ISO-WD96110 MLZ91 B,T,P Rem.
max. 0,05 1,5 0,05 — — 9,5 — — 0,05 — 0,10 0,005 0,05 0,005 0,05 0,30
min. 2,5 2,5 — — — 3,5 — — — — — — — — — —
a
ISO-MgLi4Al3Zn3 ISO-WD96120 MLAZ433 P Rem.
max. 3,5 3,5 — — — 4,5 — — — — 0,5 0,05 0,05 — 0,05 0,30
MgLiAl
Zn
min. 2,5 2,5 — — — 9,5 — — — — — — — — — —
a
ISO-MgLi10Al3Zn3 ISO-WD96130 MLAZ1033 P Rem.
max. 3,5 3,5 — — — 10,5 — — — — 0,5 0,05 0,05 — 0,05 0,30
min. — — 1,2 — — — — — — — — — — — — —
a
MgMn ISO-MgMn2 ISO-WD43150 MM2 B,T Rem.
max. — — 2,0 — — — — — — — 0,10 — 0,05 0,01 0,05 0,30
min. — — — — 2,4 — 0,4 3,7 — — — — — — — —
MgYRE
a
ISO-MgY4RE3Zr1(B) ISO-WD95360 MWEK431b B,F Rem.
Zr b
max. — 0,20 0,03 — 4,4 0,2 1,0 4,3 — — 0,01 0,01 0,02 0,005 0,01 0,30
ISO /PRF 3116:####(X:2026(en)
Composition
Material designation
Produ
% (mass fraction)
Alloy
ct
group
Others Others
form
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca  Si Fe Cu Ni
each total
min. — — — — 2,4 — 0,4 3,7 — — — — — — — —
a
ISO-MgY4RE3Zr(C) ISO-WD95370 MWEK431c B,P Rem.
0,00
max. — 0,06 0,03 — 4,4 — 1,0 4,3 — — — 0,005 0,02 0,01 0,30
min. — — — — 1,5 — 0,4 4,75 — — — — — — — —
a
ISO-MgY5RE4Zr1 ISO-WD95350 MWEK541 B,F Rem.
a
max. — 0,20 0,03 — 4,0 0,2 1,0 5,5 — — 0,01 0,01 0,02 0,005 0,01 0,30
min. — — — — 0,7 — 0,4 6,7 — — — — — — — —
a
ISO-MgY7RE1Zr1 ISO-WD95380 MWEK711 B Rem.
max. — — — — 2,0 — 1,0 8,5 — — 0,01 0,05 — 0,004 — 0,30
min. — — — — 0,7 — 0,4 8,2 — — — — — — — —
a
ISO-MgY9RE1Zr1 ISO-WD95390 MWEK911 B Rem.
max. — — — — 1,9 — 1,0 9,5 — — 0,01 — — 0,004 — 0,30
min. — 2,0 — — — — — 6,2 — — — — — — — —
a
ISO-MgY7Zn3 ISO-WD96110 MWZ73 B,T,P Rem.
max. — 3,0 — — — — — 7,4 — — 0,10 0,005 0,05 0,005 0,05 0,30
MgYZn
min. — 4,5 — — — — — 6,2 — — — — — — — —
a
ISO-MgY7Zn5 ISO-WD96120 MWZ75 B,T,P Rem.
max. — 5,5 — — — — — 7,4 — — 0,10 0,005 0,05 0,005 0,05 0,30
min. 0,5 6,0 0,30 — — — — — — — — — 0,5 — — —
a
MgZnAl ISO-MgZn8Al1Cu1 ISO-WD32110 MZAC811 B Rem.
max. 1,5 8,0 0,70 — — — — — — — 0,01 0,01 1,0 0,01 — —
min. — 1,5 — — 0,2 — — — — —  — 0,30 — — —
a
MgZnCu ISO-MgZn2Cu ISO-WD32120 MZC20 P Rem.
max. — 2,5 — — 0,6Ce — — — — — 0,05 0,02 0,6 — 0,01 0,05
min. — 6,0 0,5 — — — — — — — — — 1,0 — — —
a
MgZnCuMn ISO-MgZn7Cu1Mn1 ISO-WD32150 MZCM711 B Rem.
max. 0,2 7,0 1,0 — — — — — — — 0,01 0,05 1,5 0,01 0,05 0,30
min. — 1,75 0,6 — — — — — — — — — — — — —
a
ISO-MgZn2Mn1 ISO-WD32350 MZM21 B,T,F,P Rem.
max. 0,1 2,3 1,3 — — — — — — — 0,1 0,06 0,1 0,005 0,05 0,30
MgZnMn
min. — 1,8 0,50 — 0,10 — — — — — — — — — — —
a
ISO-MgZn2Mn1RE ISO-WD32351 MZME210 B,T,P Rem.
max. 0,02 2,4 0,9 — 0,6Ce — — — — — 0,01 0,008 0,006 0,004 0,01 0,20
© ISO #### 2026 – All rights reserved
ISO/DISPRF 3116:20252026(en)
Composition
Material designation
Produ
% (mass fraction)
Alloy
ct
group
Others Others
form
Symbol Number Designation Element Mg Al Zn Mn Gd RE Li Zr Y Ca  Si Fe Cu Ni
each total
min. — 4,5 0,5 — — — — — — — — — — — — —
a
ISO-MgZn5Mn1 ISO-WD32360 MZM51 B Rem.
max. — 6,0 2,0 — — — — — — — 0,01 0,005 0,01 0,004 — 0,30
min — 2,5 — — — — 0,45 — — — — — — — — —
a
ISO-MgZn3Zr ISO-WD32250 MZK30 B,T,F Rem.
max. — 4,0 — — — — 0,8 — — — — — — — 0,05 0,30
MgZnZr
min. — 4,8 — — — — 0,45 — — — — — — — — —
a
ISO-MgZn6Zr ISO-WD32260 MZK60 B,T,F Rem.
max. — 6,2 — — — — 0,8 — — — — — — — 0,05 0,30
Key
B = bars and solid sections
T = tubes and hollow sections
F = forgings
P = plates and sheets
RE = neodymium and other heavy rare earth metals
a Remainder.
b Zn+Ag.
ISO /PRF 3116:####(X:2026(en)
Table 3 — ISO-Mg 99.99 (MG9999)
Tensile strength 0,2 % proof stress Elongation
Rm Rp0,2 A
Thickness
Temper
2 2
mm
N/mm N/mm %
min. min. min.
Bars and solid sections t = D for solid round bars
1 ≤ t ≤ 10 185 95 22
F
10 < t ≤ 40 180 90 21
Table 4 — Alloy ISO-MgAl8Ag (MAQ80)
Tensile strength 0,2 % proof stress Elongation
Rm Rp0,2 A
Thickness
Temper
2 2
mm
N/mm N/mm %
min. min. min.
Forgings
F All 320 210 4
Plate and sheet
F 10 < t ≤ 30 370 250 6
Values for separately forged test pieces shall be agreed between the manufacturer and the customer.
Table 5 — Alloy ISO-MgAl4Ca1 (MAX41)
Tensile strength 0,2 % proof stress Elongation
Rm Rp0,2 A
Thickness
Temper
2 2
mm
N/mm N/mm %
min. min. min.
Bars and solid sections t = D for solid
...