SIST EN 4500-003:2026
(Main)Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 003: Specific rules for heat-resisting alloys
- Abstract
The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 003 specifies the "Specific rules for heat resisting alloys".
- Status
- Published
- Public Enquiry End Date
- 30-Oct-2025
- Publication Date
- 20-Oct-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 19-Oct-2026
- Due Date
- 24-Dec-2026
- Completion Date
- 21-Oct-2026
SIST EN 4500-003:2026 is the Slovenian adoption of the European aerospace standard for drafting and presenting metallic material standards. It specifies the special rules for heat-resisting alloys, so it is used by people who prepare, review, or apply aerospace material standards for these alloys.
What does SIST EN 4500-003:2026 specify?
SIST EN 4500-003:2026 belongs to the EN 4500 series, which sets the rules for drafting and presenting metallic material standards for aerospace applications. This Part 003 covers the specific drafting rules for heat-resisting alloys, so it is not a product specification in itself but a document about how such specifications are written.
The document is organized into four main clauses and five informative annexes. Clause 1 gives the scope, Clause 2 lists normative references, Clause 3 points to the applicable terms and definitions, and Clause 4 gives the drafting rules and the structure of Table 1.
| Annex | What it covers |
|---|---|
| Annex A | Completion of the title page |
| Annex B | Completion of the introduction |
| Annex C | Completion of the scope, normative references, terms and definitions, and requirements |
| Annex D | Completion of Table 1 |
| Annex E | Completion of the bibliography |
What are the key requirements of SIST EN 4500-003:2026?
SIST EN 4500-003:2026 sets out how a European standard for aerospace metallic materials is to be drafted, with Table 1 as the central requirement. In practice, the standard tells the writer what information must appear, in what order, and which related standards or test methods may be cited.
Title, scope, and structure
Clause 4.2 gives the required building blocks for a title, including the method of melting, the form, and any additional information. Annex A shows how those elements are combined on a title page. For a reader, this means the title is not just a name - it must carry enough technical detail to identify the material and its product form.
Melting and product form terms
Clause 4.2.2 lists the permitted melting descriptions, including terms such as vacuum melted, vacuum refined, vacuum arc melted, vacuum arc remelted, electro-slag remelted, consumable electrode remelted, inert gas atomised, rotating electrode atomised, rotating crucible atomised, and water atomised. Clause 4.2.3 then lists the allowed form entries for sheets, strips, plates, bars, sections, tubes, wires, forgings, remelting stock, and castings. Clause 4.2.4 adds the entries used for powder metallurgy.
For the reader, this matters because the standard controls the exact wording used to describe the product route and shape. That reduces ambiguity when a specification is used by multiple suppliers or procurement teams.
Additional information and intended use
Clause 4.2.5 lists additional information entries such as structural applications, pressure applications, rivets, forged fasteners, forged rings, machined fasteners, and welding. Clause 4.5.32 also provides a line for typical use.
In practice, these entries help the writer state what the material is intended for, which is useful when a specification needs to separate general product data from application-specific use.
Table 1 content and ordering
Clause 4.5 defines the line-by-line structure of Table 1. It covers material designation, chemical composition, method of melting, form, method of production, further intended processing, limit dimensions, technical specification, dimensional standard, delivery condition and heat treatment, use condition, test samples and test pieces, dimensions concerned, direction of test piece, tensile, hardness, shear strength, bending, impact strength, creep, reference heat treatment, inspection lines, notes, typical use, and product qualification.
For the reader, this is the core of the document. It shows what a material standard must contain and how the information is sequenced so that design, inspection, testing, and qualification data are all presented in a consistent way.
Special drafting points for heat-resisting alloys
Clause 4.5.9 requires line 5.2 to identify the applicable dimensional standard. Clause 4.5.10 lists the delivery condition and heat treatment terms that may be used, including not heat treated, annealed, solution treated, precipitation treated, tempered, cold worked, hot isostatically pressed (hipped), descaled, machined, ground, as cast, and as forged. Clause 4.5.12 states that use condition and heat treatment may use the same terms or state delivery condition.
Clause 4.5.10 also says that thickness of cladding on each face is not applicable to heat-resisting alloys, and clauses 4.5.25 and 4.5.30 mark lines 27 and 97 as not used. This matters because it prevents irrelevant requirements from being carried into a heat-resisting alloy standard.
Test and qualification-related lines
Clause 4.5 includes lines for tensile properties, hardness, shear strength, bending, impact strength, creep, microstructure, macrostructure, density, elastic modulus, crack propagation, surface contamination, particle size, cleanliness of powder, internal imperfections, and product qualification. Annex D shows how these lines are completed in an example, including references to methods and acceptance criteria.
For the reader, this means the document is not only about wording - it also provides the framework for the mechanical, metallurgical, and inspection data that a material standard may need.
What terms does SIST EN 4500-003:2026 define?
SIST EN 4500-003:2026 uses the terms and definitions from EN 4259 and EN 4500-001. No separate term list is given in this document, so the following are the key abbreviations and phrases used in the standard.
- ASD-STAN - the technical committee named in the foreword as the body that prepared the draft.
- CEN - the European Committee for Standardization, whose members may adopt the document as a national standard.
- CENELEC - the European Committee for Electrotechnical Standardization, cited in the internal regulations governing document structure.
- EN 4500-001 - the general rules part of the EN 4500 series, used throughout this part as the basis for common drafting rules.
- Heat-resisting alloys - the alloy family covered by Part 003, for which the document gives specific drafting rules.
- Hot isostatically pressed (hipped) - a product condition and processing term that appears in the permitted entries for forms and delivery conditions.
- Delivery condition - the state in which the product is supplied, which can be stated in Table 1 and in the use condition line.
- Reference heat treatment - the heat treatment used as the reference point for the standard’s specified conditions and testing lines.
Who uses SIST EN 4500-003:2026?
SIST EN 4500-003:2026 is used by people who write or review aerospace material standards for heat-resisting alloys. That includes standards developers, technical committees, material specification authors, and organizations that need to present alloy data in a consistent European format.
It is also relevant to aerospace material suppliers, test laboratories, and quality or procurement teams that work with the resulting material standards. They use it to understand what information must appear in a specification, how product form and processing are described, and how test and qualification references are organized.
What changed in SIST EN 4500-003:2026 from the previous edition?
The foreword states that this draft includes these changes with respect to EN 4500-003:2024:
- addition of line 4.3, “Further intended processing”, and line 5.2, “Dimensional standard”, in the body and in Annex D;
- addition of introductory sentences to Table 1 in Annex C to show that the table is a normative element and that all listed documents shall be applied;
- editorial changes to clarify which references to documents or annexes are normative and which are informative;
- restructuring of the document and simplification of the template to create a single continuous table.
Which standards are used with SIST EN 4500-003:2026?
SIST EN 4500-003:2026 cites several companion standards that support its drafting rules and the technical content of Table 1.
- EN 4500-001 - provides the general rules for drafting aerospace metallic material standards and is the main companion to this part.
- EN 4259 - supplies the general terms and definitions used for the document.
- EN 10027-1 and EN 10027-2 - provide the designation systems for steels used when material designation is given.
- EN 4258 - describes the general organization of standardization for aerospace metallic materials.
- EN 2002-001 - gives the tensile testing method at ambient temperature.
- EN 2043 - gives general requirements for semi-finished product qualification, excluding forgings and castings.
- EN 2950:2008 - provides macrographic and micrographic examination conditions and structure and defect atlases.
- EN 2957 - gives the method of preparation of forged samples.
- EN 4700-001, EN 4700-002, EN 4700-003, and EN 4700-004 - provide the technical specification parts for plate, sheet and strip, bars and sections, tube, and wire.
- EN 6018 - gives the density determination method.
- EN ISO 643 - provides the micrographic grain size method.
What does the SIST EN 4500-003:2026 document contain?
The document contains the drafting template for an aerospace material standard, including a detailed Table 1 structure with mandatory and optional lines. Annex D shows an example of completed entries for chemistry, melting, form, heat treatment, test conditions, microstructure, macrostructure, fatigue, crack propagation, density, elastic modulus, and product qualification.
It also contains example annexes that show how to complete the title page, introduction, scope, requirements, and bibliography. The result is a practical writing framework for designing, testing, and qualifying standards for heat-resisting alloy products used in aerospace applications.
Relations
- Effective Date
- 21-Oct-2026
- Effective Date
- 21-Oct-2026
- Effective Date
- 21-Oct-2026
- Effective Date
- 21-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
- Effective Date
- 14-Oct-2026
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Frequently Asked Questions
SIST EN 4500-003:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 003: Specific rules for heat-resisting alloys". This standard covers: The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications. This Part 003 specifies the "Specific rules for heat resisting alloys".
The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications. This Part 003 specifies the "Specific rules for heat resisting alloys".
SIST EN 4500-003:2026 is classified under the following ICS (International Classification for Standards) categories: 01.120 - Standardization. General rules; 49.025.05 - Ferrous alloys in general; 49.025.15 - Non-ferrous alloys in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 4500-003:2026 has the following relationships with other standards: It is inter standard links to SIST EN 10027-1:2016, SIST EN 4259:2022, SIST EN 10027-2:2015, SIST EN 4500-001:2026, SIST EN 4262:2014, SIST EN 2952:2019, SIST EN 4377:2015, SIST EN 4263:2014, SIST EN 2174:2018, SIST EN 2306:2018, SIST EN 3220:2019, SIST EN 2226:2014, SIST EN 2030:2014, SIST EN 2320:2019, SIST EN 2402:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 4500-003:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2026
Aeronavtika - Kovinski materiali - Pravila za načrtovanje in predstavljanje
standardov za materiale - 003. del: Posebna pravila za toplotno odporne zlitine
Aerospace series - Metallic materials - Rules for drafting and presentation of material
standards - Part 003: Specific rules for heat-resisting alloys
Luft- und Raumfahrt - Metallische Werkstoffe - Regeln für das Erstellen und die
Gestaltung von Werkstoffnormen - Teil 003: Besondere Regeln für hochwarmfeste
Legierungen
Série aérospatiale - Matériaux métalliques - Règles pour la rédaction et la présentation
des normes de matériaux - Partie 003 : Règles spécifiques aux alliages résistant à chaud
Ta slovenski standard je istoveten z: EN 4500-003:2026
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4500-003
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2026
EUROPÄISCHE NORM
ICS 01.120 Supersedes EN 4500-003:2024
English Version
Aerospace series - Metallic materials - Rules for drafting
and presentation of material standards - Part 003: Specific
rules for heat-resisting alloys
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 003 : Règles spécifiques aux alliages Werkstoffnormen - Teil 003: Besondere Regeln für
résistant à chaud hochwarmfeste Legierungen
This European Standard was approved by CEN on 26 July 2026.
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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4500-003:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Rules for drafting a European standard for aerospace metallic materials. 6
4.1 General. 6
4.2 Title . 6
4.2.1 General. 6
4.2.2 Method of melting . 7
4.2.3 Form entries . 7
4.2.4 Form entries for powder metallurgy . 9
4.2.5 Additional information entries . 9
4.3 Introduction . 9
4.3.1 General. 9
4.4 Scope, normative references, terms and definitions, requirements . 9
4.5 Table 1 . 9
4.5.1 Line 1: Material designation . 9
4.5.2 Line 2: Chemical composition. 10
4.5.3 Line 3: Method of melting . 10
4.5.4 Line 4.1: Form . 10
4.5.5 Line 4.2: Method of production . 10
4.5.6 Line 4.3: Further intended processing . 10
4.5.7 Line 4.4: Limit dimension(s) . 10
4.5.8 Line 5.1: Technical specification . 10
4.5.9 Line 5.2: Dimensional standard . 10
4.5.10 Line 6.1: Delivery condition and Heat treatment . 11
4.5.11 Line 6.2: Delivery condition code . 11
4.5.12 Line 7: Use condition and Heat treatment . 11
4.5.13 Line 8.1: Test sample(s) . 11
4.5.14 Line 8.2: Test piece(s) . 11
4.5.15 Line 8.3: Heat treatment . 12
4.5.16 Line 9: Dimensions concerned . 12
4.5.17 Line 10: Thickness of cladding on each face . 12
4.5.18 Line 11: Direction of test piece . 12
4.5.19 Lines 12 to 16: Tensile (T) . 12
4.5.20 Line 17: Hardness . 12
4.5.21 Line 18: Shear strength . 12
4.5.22 Line 19: Bending . 12
4.5.23 Line 20: Impact strength . 12
4.5.24 Lines 21 to 26: Creep (C) . 12
4.5.25 Line 27 . 13
4.5.26 Line 28 . 13
4.5.27 Line 29: Reference heat treatment . 13
4.5.28 Lines 30 to 94 . 13
4.5.29 Line 95: Marking inspection . 13
4.5.30 Line 96: Dimensional inspection . 13
4.5.31 Line 97 . 13
4.5.32 Line 98: Notes . 13
4.5.33 Line 99: Typical use . 13
4.5.34 Line 100: Product qualification . 13
4.6 Bibliography . 13
Annex A (informative) Completion of title page . 14
Annex B (informative) Completion of the introduction . 15
Annex C (normative) Completion of the scope, normative references, terms and definitions,
and requirements . 16
Annex D (informative) Completion of Table 1. 17
Annex E (informative) Completion of the bibliography . 25
Bibliography . 26
European foreword
This document (EN 4500-003:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by April 2027, and conflicting national standards shall be withdrawn at
the latest by April 2027.
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 will supersede EN 4500-003:2024.
to EN 4500-003:2024:
— addition of the lines 4.3 “Further intended processing” and 5.2 “Dimensional standard” in the body
of the document and in Annex D;
— addition of introductory sentences to Table 1 in Annex C to highlight the fact that the table is a
normative element and that all the documents that it lists can be applied;
— overall editorial modifications to give clarity on the normative or informative nature of the
references made to other documents or annexes;
— restructuring of the document and simplification of the template to achieve a single continuous
table.
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.
1 Scope
The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards
for aerospace applications.
This Part 003 specifies the “Specific rules for heat-resisting alloys”.
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 4259, Aerospace series — Metallic materials — Definition of general terms
EN 4500-001, Aerospace series — Metallic materials — Rules for drafting and presentation of material
standards — Part 001: General rules
EN 10027-1, Designation systems for steels — Part 1: Steel names
EN 10027-2, Designation systems for steels — Part 2: Numerical system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4259 and EN 4500-001 apply.
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 Rules for drafting a European standard for aerospace metallic materials
4.1 General
Examples given in annexes are only intended to illustrate the rules for drafting and presentation and
might not correspond to real standardized EN semi-finished products. Technological development can
require the use of terms additional to those listed.
4.2 Title
4.2.1 General
Shall be according to EN 4500-001.
See also Annex A of this document.
The following are examples of descriptions which shall be used.
4.2.2 Method of melting
Complete in accordance with EN 4500-001 using one or more of the following terms:
— air melted;
— vacuum melted;
— vacuum refined;
— vacuum arc melted;
— vacuum arc remelted;
— electro-slag remelted;
— consumable electrode remelted;
— inert gas atomised;
— rotating electrode atomised;
— rotating crucible atomised;
— water atomised.
4.2.3 Form entries
a) Sheets, strips, plates:
The terms may be qualified with one of the following terms:
1) rolled;
2) cold rolled;
3) hot rolled.
b) Bars:
The term may be qualified with one or more of the following terms:
1) hot rolled;
2) cold rolled;
3) drawn;
4) extruded.
c) Sections:
The term may be qualified with one or more of the following terms:
1) extruded;
2) hot rolled.
d) Tubes:
The term may be qualified with one or more of the following terms:
1) rolled;
2) drawn;
3) extruded;
4) seamless;
5) welded.
e) Wires:
The term may be qualified with one or more of the following terms:
1) drawn;
2) hot rolled.
f) Forging stock.
g) Forgings:
The term may be qualified with one or more of the following terms:
1) die;
2) hand.
h) Remelting stock.
i) Castings:
The term may be qualified with one or more of the following terms:
1) sand;
2) chill;
3) investment;
4) centrifugal;
5) precision;
6) hot isostatically pressed (hipped).
4.2.4 Form entries for powder metallurgy
— Powder;
— Compacted material;
— Part:
The term may be qualified with one or more of the following terms:
o hot isostatically pressed (hipped);
o extruded;
o forged.
4.2.5 Additional information entries
— For structural applications;
— for pressure applications;
— for rivets;
— for forged fasteners;
— for forged rings;
— for machined fasteners;
— for welding.
4.3 Introduction
4.3.1 General
Shall be according to EN 4500-001.
See also Annex B of this document.
4.4 Scope, normative references, terms and definitions, requirements
Shall be according to EN 4500-001 and Annex C of this document.
4.5 Table 1
4.5.1 Line 1: Material designation
Shall be according to EN 4500-001.
See also Annex D of this document.
For steels, the designation shall be according to EN 10027-1 and EN 10027-2.
4.5.2 Line 2: Chemical composition
The chemical composition shall be written in accordance with EN 4500-001 and the order of
presentation of elements shall conform to the following rules:
— C, Si, Mn, P, S;
— alloying elements in alphabetical order using their chemical symbol;
— ratio and/or total of above elements in alphabetical order;
— trace elements in alphabetical order.
4.5.3 Line 3: Method of melting
Shall be according to EN 4500-001.
See also Annex D of this document.
The terms listed in 4.2.2 shall be used.
4.5.4 Line 4.1: Form
Shall be according to EN 4500-
...