EN 4500-001:2026

• Abstract:

  The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.; This Part 001 specifies the "General rules" framework valid for all parts.

• Status: Not Published
• Publication Date: 06-Oct-2026
• ICS: 01.120 - Standardization. General rules
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4/S 3 - Steels & Heat Resisting Alloys
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 26-Jul-2026
• Completion Date: 26-Jul-2026
• Ref Project: kSIST FprEN 4500-001:2026 - Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 001: General rules

• Revises: EN 4500-001:2024 - Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 001: General rules
• Effective Date: 11-Jun-2025

EN 4500-001:2026 is a CEN European Standard in the Aerospace series. It sets the general rules for drafting and presenting metallic material standards for aerospace applications, so it is mainly a document for people who write, review, or apply those material standards.

The standard tells you how to build a material specification so that the title, scope, test requirements, qualification and related references are presented in a consistent way. In practice, it matters because the same drafting structure is used across the EN 4500 series and the result is meant to be unambiguous for manufacturers, purchasers, and test laboratories.

What does EN 4500-001:2026 specify?

EN 4500-001:2026 specifies the rules for drafting and presenting metallic material standards for aerospace applications. This Part 001 provides the general rules framework that applies across the EN 4500 series.

The document is organized into:

• Clause 1 Scope
• Clause 2 Normative references
• Clause 3 Terms and definitions
• Clause 4 Rules for drafting a European standard for aerospace metallic materials
• Annex A and Annex B

Annex	What it covers
Annex A	Normative template for Table 1
Annex B	Normative allocation of numbers to optional lines

What are the key requirements of EN 4500-001:2026?

EN 4500-001:2026 is mainly a drafting standard. Its key requirements tell authors how to structure a material standard, which information is mandatory in the main table, and how to present test and qualification data so that users can apply it consistently.

How the standard must be structured

Clause 4.1 sets the document structure: title, introduction, Scope, Normative references, Terms and definitions, Requirements, Bibliography if appropriate, and Annexes if appropriate. This matters because the standard is not just about content, but also about where that content appears.

Clause 4.2 requires the title to identify the semi-finished product unambiguously in the use condition. It also says the same title shall not be used for different material standards, and overlapping mechanical property limits are normally not permitted for otherwise identical material standards.

Clause 4.4 requires the Scope to repeat the title information in the same format and add “for aerospace applications”. That gives readers a fast check that the document covers the material family and product form they are looking for.

How Table 1 is to be used

Clause 4.7 makes Table 1 the core normative element. The text says Table 1 shall be applied, and the documents listed in it shall be applied. Mandatory lines are 1 to 26 and 95, 96, 98, 99 and 100; lines 27 to 94 are optional.

This is important in practice because a drafter knows exactly which data must always be completed and which characteristics are added only when relevant. If space is tight, the standard allows notes or repeated lines, and it requires an em dash on lines that are not needed.

Clause 4.7.1 also fixes general drafting rules: requirements already covered by the technical specification or test method are not repeated, values must use the correct minimum or maximum signs, and symbols and units follow the ISO 80000 series. That keeps the material standard concise and avoids conflicting instructions.

What the main data lines cover

Clause 4.7.2 to 4.7.18 cover the identification and basic definition of the material. These lines include:

• material designation
• chemical composition, including min/max values and “others”
• method of melting
• form, production method, and further intended processing
• technical specification and dimensional standard
• delivery condition and heat treatment
• use condition and heat treatment
• test sample, test piece, and test heat treatment
• dimensions concerned
• direction of test piece

For the reader, this means the standard can define not only the material itself but also how it is made, delivered, and tested.

Clause 4.7.11 and 4.7.12 use delivery condition wording and delivery condition codes from EN 2032-2. Clause 4.7.13 defines how use condition is stated, including the case where it is identical to the delivery condition. Clause 4.7.16 allows a reference heat treatment on line 29 when that is needed for testing.

Which properties and tests are controlled

Clauses 4.7.20 to 4.7.25 cover tensile properties, hardness, shear strength, bending, impact strength, and creep. These lines specify the test temperature, the property symbol, and how the result is to be presented.

This is useful because a material standard can say exactly what has to be measured and under what conditions. For example, tensile lines cover proof stress, tensile strength, elongation and reduction of area; impact lines cover KU or KV and the notch direction; creep lines cover temperature, time, stress, elongation and rupture values.

Optional lines and qualification

Clause 4.7.29 allows optional lines 30 to 94 when a material standard needs extra characteristics. Annex B lists the available optional line titles, including topics such as microstructure, grain size, corrosion, fatigue, density, weldability, porosity, and formability.

Clause 4.7.30 to 4.7.36 cover marking inspection, dimensional inspection, notes, typical use, and product qualification. Line 100 is especially important because it sets out how semi-finished product qualification is handled, including cases where a qualification programme is agreed between manufacturer and purchaser or referred to EN 2043.

What terms does EN 4500-001:2026 define?

EN 4500-001:2026 uses the terms and definitions from EN 4258 and EN 4259, and it also relies on several working terms in the drafting rules and tables.

• Delivery condition - the thermo-mechanical and heat treatment state applied to the semi-finished product before delivery.
• Use condition - the heat treatment condition that applies when the semi-finished product is intended for use, either before further working or in the final component.
• Test sample - the material taken from stock or made separately for testing, such as cut from, forged from, separately cast, or appended test bars.
• Test piece - the specimen prepared from the test sample for the actual test, either machined before heat treatment or heat treated before machining.
• Reference heat treatment - the heat treatment stated on line 29 when line 8.3 refers to it for testing.
• Proof stress (Rp0,2) - the tensile property reported on line 13 at the test temperature.
• Tensile strength (Rm) - the tensile property reported on line 14 at the test temperature.
• Reduction of area (Z) - the tensile ductility result reported as a percentage on line 16.

Who uses EN 4500-001:2026?

EN 4500-001:2026 is used by the people who draft aerospace metallic material standards and by the people who apply them. That includes ASD-STAN and CEN committee members, material specifiers, manufacturers, purchasers, and test laboratories.

In practice, it supports:

• authors of EN 4500 series parts for aluminium, magnesium, heat resisting alloys, titanium alloys, steels, and filler metals
• manufacturers of aerospace semi-finished products
• purchasers who need a consistent material specification
• laboratories performing tensile, hardness, shear, bending, impact, and creep tests
• qualification planners working with line 100 and related technical specifications

What changed in EN 4500-001:2026 from the previous edition?

The foreword states that prEN 4500-001:2025 will supersede EN 4500-001:2024 and lists these changes:

• Table 1 was made monolingual by removing the French and German columns
• lines 4.3 “Further intended processing” and 5.2 “Dimensional standard” were added
• introductory sentences were added to Table 1 in Subclause 4.7.1 to show that it is a normative element and that all listed documents shall be applied
• titles were added to Table 1, Table 2 and Figure 1
• the document was restructured and the template simplified into a single continuous table

Which standards are used with EN 4500-001:2026?

EN 4500-001:2026 cites these documents in Clause 2 and related text:

Standard	What it contributes
EN 2002-001	Tensile testing at ambient temperature
EN 2032-2	Coding of metallurgical condition in delivery condition
EN 4258	General organization of standardization and links between types of European standards
EN 4259	Definition of general terms
EN 4500-002 to EN 4500-006	Specific rules for the different material families in the EN 4500 series
ISO 80000-1, -2, -3, -4, -5, -10	Quantities, units and symbols used for drafting and presentation
EN 2043	General requirements for semi-finished product qualification
ASTM E399	Additional reference for Charpy impact test directions

What does the EN 4500-001:2026 document contain?

EN 4500-001:2026 contains the drafting template and the rules needed to complete a material standard for aerospace metallic materials. Annex A gives the full template for Table 1, including the mandatory lines for identification, composition, delivery condition, tests, notes and product qualification.

Annex B assigns the numbers used for optional lines such as microstructure, fatigue, corrosion, density, weldability, and other special characteristics. The main text also includes Table 2 for direction symbols and Figure 1 for completing optional lines.

The document is therefore used when preparing, checking, or interpreting aerospace metallic material standards, especially where consistent testing, qualification, and presentation of requirements are needed.

SLOVENSKI STANDARD
oSIST prEN 4500-001:2025
01-oktober-2025
Aeronavtika - Kovinski materiali - Pravila za načrtovanje in predstavljanje
standardov za materiale - 001. del: Splošna pravila
Aerospace series - Metallic materials - Rules for drafting and presentation of material
standards - Part 001: General rules
Luft- und Raumfahrt - Metallische Werkstoffe - Regeln für das Erstellen und die
Gestaltung von Werkstoffnormen - Teil 001: Allgemeine Regeln
Série aérospatiale - Matériaux métalliques - Règles pour la rédaction et la présentation
des normes de matériaux - Partie 001 : Règles générales
Ta slovenski standard je istoveten z: prEN 4500-001
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
49.025.05 Železove zlitine na splošno Ferrous alloys in general
49.025.15 Neželezove zlitine na Non-ferrous alloys in general
splošno
oSIST prEN 4500-001:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 4500-001:2025
oSIST prEN 4500-001:2025
DRAFT
EUROPEAN STANDARD
prEN 4500-001
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2025
ICS 01.120 Will supersede EN 4500-001:2024
English Version
Aerospace series - Metallic materials - Rules for drafting
and presentation of material standards - Part 001: General
rules
Série aérospatiale - Matériaux métalliques - Règles Luft- und Raumfahrt - Metallische Werkstoffe - Regeln
pour la rédaction et la présentation des normes de für das Erstellen und die Gestaltung von
matériaux - Partie 001 : Règles générales Werkstoffnormen - Teil 001: Allgemeine Regeln
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4500-001:2025 E
worldwide for CEN national Members.

oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
Contents Page
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Rules for drafting a European standard for aerospace metallic materials. 7
4.1 Document structure . 7
4.2 Title of the material standard . 7
4.3 Introduction . 8
4.4 Scope . 8
4.5 Normative references . 8
4.6 Terms and definitions . 8
Table 1: corresponds to the template given in Annex A . 8
4.6.1 General. 8
4.6.2 Line 1: Material designation . 9
4.6.3 Line 2: Chemical composition. 9
4.6.4 Line 3: Method of melting . 10
4.6.5 Line 4.1: Form . 10
4.6.6 Line 4.2: Method of production . 10
4.6.7 Line 4.3: Further intended processing . 10
4.6.8 Line 4.4: Limit dimension(s) . 10
4.6.9 Line 5.1: Technical specification . 11
4.6.10 Line 5.2: Dimensional standard . 11
4.6.11 Line 6.1: Delivery condition and Heat treatment . 11
4.6.12 Line 6.2: Delivery condition code . 11
4.6.13 Line 7: Use condition and Heat treatment . 12
4.6.14 Line 8.1: Test sample(s) . 12
4.6.15 Line 8.2: Test piece(s) . 12
4.6.16 Line 8.3: Heat treatment . 12
4.6.17 Line 9: Dimensions concerned . 13
4.6.18 Line 10: Thickness of cladding on each face . 13
4.6.19 Line 11: Direction of test piece . 13
4.6.20 Lines 12 to 16: Tensile (T) . 14
4.6.21 Line 17: Hardness . 14
4.6.22 Line 18: Shear strength . 14
4.6.23 Line 19: Bending . 14
4.6.24 Line 20: Impact strength . 15
4.6.25 Lines 21 to 26: Creep (C) . 15
4.6.26 Line 27 . 16
4.6.27 Line 28 . 16
4.6.28 Line 29: Reference heat treatment . 16
4.6.29 Lines 30 to 94 . 16
4.6.30 Line 95: Marking inspection . 17
4.6.31 Line 96: Dimensional inspection . 17
4.6.32 Line 97 . 17
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
4.6.33 Line 98: Notes . 17
4.6.34 Line 99: Typical use . 17
4.6.35 Line 100: Product qualification . 17
4.6.36 Line 100: Completion of semi-finished product qualification requirements . 18
Annex A (normative) Template . 19
Annex B (normative) Allocation of numbers to optional lines . 21
Bibliography . 22
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
Foreword
This document (prEN 4500-001:2025) has been prepared by the Technical Committee ASD-STAN/D04
“Materials”.
This document is currently submitted to the CEN Enquiry
This document will supersede EN 4500-001:2024.
prEN 4500-001:2025 includes the following significant technical changes with respect to EN 4500:2024:
— modification of Table 1 of this document to make it monolingual, thus erasing the French and German
columns;
— addition of the lines 4.3 "Further intended processing" and 5.2 "Dimensional standard" in the body
of the document and in Annex A;
— addition of introductory sentences to Table 1 in Subclause 4.7.1 to highlight the fact that the table is
a normative element and that all the documents that it lists shall be applied;
— addition of a title to Table 1, Table 2 and Figure 1 of this document;
— restructuring of the document and simplification of the Template to achieve a single continuous table.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
Introduction
This document is part of the series of EN metallic material standards for aerospace applications.
The general organization of this series is described in EN 4258.
The EN 4500 series (Aerospace series — Metallic materials — Rules for drafting and presentation of
material standards) is composed by the following documents:
— General rules EN 4500-001;
— Specific rules for aluminium, aluminium alloys and EN 4500-002;
magnesium alloys
— Specific rules for heat-resisting alloys EN 4500-003;
— Specific rules for titanium and titanium alloys EN 4500-004;
— Specific rules for steels EN 4500-005;
— Specific rules for filler metals for welding EN 4500-002 to EN 4500-005;
— Specific rules for filler metals for brazing EN 4500-006.
Basis for the drafting of all European standards is CEN/CENELEC Internal Regulations — Part 3: Principles
and rules for the structure and drafting of CEN and CENELEC documents.
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
1 Scope
The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards
for aerospace applications.
This Part 001 specifies the “General rules” framework valid for all parts.
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 2002-001, Aerospace series — Metallic materials — Test methods — Part 001: Tensile testing at
ambient temperature
EN 2032-2, Aerospace series — Metallic materials — Part 2: Coding of metallurgical condition in delivery
condition
EN 4258, Aerospace series — Metallic materials — General organization of standardization — Links
between types of European standards and their use
EN 4259, Aerospace series — Metallic materials — Definition of general terms
EN 4500-002, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 002: Specific rules for aluminium, aluminium alloys and magnesium alloys
EN 4500-003, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 003: Specific rules for heat resisting alloys
EN 4500-004, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 004: Specific rules for titanium and titanium alloys
EN 4500-005, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 005: Specific rules for steels
EN 4500-006, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 006: Specific rules for filler metals for brazing
ISO 80000-1, Quantities and units — Part 1: General
ISO 80000-2, Quantities and units — Part 2: Mathematics
ISO 80000-3, Quantities and units — Part 3: Space and time
ISO 80000-4, Quantities and units — Part 4: Mechanics
ISO 80000-5, Quantities and units — Part 5: Thermodynamics
ISO 80000-10, Quantities and units — Part 10: Atomic and nuclear physics

Published as ASD-STAN prEN at the date of publication of this document, available at: https://www.asd-stan.org/.
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4258 and EN 4259 apply.
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 Rules for drafting a European standard for aerospace metallic materials
4.1 Document structure
a) Title of the material standard;
b) Introduction;
c) Clause 1: Scope;
d) Clause 2: Normative references;
e) Clause 3: Terms and definitions;
f) Clause 4: Requirements;
g) Bibliography (if appropriate);
h) Annexes (if appropriate).
4.2 Title of the material standard
The title shall give sufficient information to unambiguously identify the semi-finished product, in the use
condition (see 4.7.13).
Consequently:
1) the same title shall not be used for different material standards;
2) overlapping of mechanical property limits for otherwise identical material standards shall not
normally be permitted.
Each part of the title shall consist of one or several different lines:
— “Aerospace series”;
— the family of metallic materials, followed by the designation of the metallic material (see 4.7.2);
— method of melting (optional for aluminium and aluminium base alloys or magnesium and
magnesium base alloys);
— use condition and heat treatment;
— the forms written in plural and the method of production and, if appropriate, further
intended processing;
— limiting dimensions;
oSIST prEN 4500-001:2025
prEN 4500-001:2025 (E)
— relevant mechanical property or physical property limits, if appropriate.
4.3 Introduction
This clause shall read:
— “This document is part of the series of EN metallic material standards for aerospace applications. The
general organization of this series is described in EN 4258.”;
— “This document has been prepared in accordance with EN 4500-002" or “EN 4500-003” or
“EN 4500-004” or “EN 4500-005” or “EN 4500-006”.
4.4 Scope
This clause shall read: “This document specifies the requirements relating to”:
Repeat all information in the title, presented in the same format, followed by “for aerospace applications”.
If necessary, further information may be added to clarify the scope:
EXAMPLE (insert example)
NOTE Other common designation used by the industry: (insert designation).
List of designations for (insert material family) can be found in TR XXXX.
4.5 Normative references
This clause shall read:
“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.”
Followed by the list of documents with their titles, to which normative reference is made in the text.
4.6 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological 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/
4.7 Table 1: corresponds to the template given in Annex A
4.7.1 General
Table 1 shall be introduced by the following to indicate that it is a normative element and that all the
documents referenced in it are requirements:
“Table 1 shall be applied.
The documents listed in Table 1 shall be applied.”
The template always has a fixed content.
If there is insufficient space on a line:
— use notes;
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prEN 4500-001:2025 (E)
— repeat the line(s).
Table 1 (see template given in Annex A) shall always include mandatory lines 1 to 26 and lines 95, 96, 98,
99 and 100. All other lines (27 to 94) are optional.
The relevant lines shall be completed with the pertinent requirements according to 4.7.2 to 4.7.25. Open
and complete the relevant optional lines with the pertinent requirements according to 4.7.27 to 4.7.29.
Where one or more of the test requirements are not specified or differ from technical specification or test
method, they shall be included in the relevant line by means of one or more sub-lines numbered in
accordance with 4.7.29.
Requirements (test method, frequency of testing, sample type, test piece definition, heat treatment
condition of test piece, testing condition) that are already specified in the technical specification, or the
test method standard called up by the technical specification referenced on line 5.1, shall not be repeated,
in this case “EN XXXX” shall be written.
If it is necessary to modify the requirements of the technical specification or test method, notes in the
table (see Annex A) shall be used.
An em dash shall be marked on those lines that are not required.
Values other than those mentioned on lines 2, 12, 19, 21, 23 and 25 shall be preceded by a sign depending
on whether they are minimum or maximum values (<, > , ≤ , ≥ ).
Where more than one:
— test method;
— test condition; or
— test value;
is stated, all are mandatory except when indicated by a note, which one is to be used.
Symbols for sizes and units shall be according to ISO 80000-1, ISO 80000-2, ISO 80000-3, ISO 80000-4,
ISO 80000-5 and ISO 80000-10.
Specific examples are given for each family of metallic materials in EN 4500-002, EN 4500-003,
EN 4500-004, EN 4500-005 or EN 4500-006.
4.7.2 Line 1: Material designation
This line shall give the family of the metallic material and the conventional designation, in accordance
with the specific material designation standard described in the related part of the EN 4500 series.
List of designations for steels can be found in TR XXXX.
4.7.3 Line 2: Chemical composition
The chemical symbols of the elements shall be written in the first line of boxes, in accordance with
established conventions according to ISO 80000-10.
The second line of boxes shall indicate the minimum content of that element.
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