kSIST FprEN 4500-004:2026

Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 004: Specific rules for titanium and titanium alloys

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 004 specifies the "Specific rules for titanium and titanium alloys".

Luft- und Raumfahrt - Metallische Werkstoffe - Regeln für das Erstellen und die Gestaltung von Werkstoffnormen - Teil 004: Besondere Regeln für Titan und Titanlegierungen

Die Normenreihe EN 4500 legt die Regeln für das Erstellen und die Gestaltung von Normen für metallische Werkstoffe für Anwendungen in der Luft- und Raumfahrt fest.
Dieser Teil 004 legt die "Besonderen Regeln für Titan und Titanlegierungen" fest.

Série aérospatiale - Matériaux métalliques - Règles pour la rédaction et la présentation des normes matériaux - Partie 004 : Règles spécifiques au titane et aux alliages de titane

La série EN 4500 spécifie les règles pour la rédaction et la présentation des normes de matériaux métalliques pour les applications aérospatiales.
La présente Partie 004 spécifie les « Règles spécifiques au titane et aux alliages de titane ».

Aeronavtika - Kovinski materiali - Pravila za načrtovanje in predstavljanje standardov za materiale - 004. del: Posebna pravila za titan in titanove zlitine

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Oct-2025
• ICS: 01.120 - Standardization. General rules
• ICS: 49.025.30 - Titanium
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 11-May-2026
• Due Date: 29-Jun-2026
• Completion Date: 11-May-2026
• Ref Project: FprEN 4500-004 - Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 004: Specific rules for titanium and titanium alloys

Relations

• Revises: SIST EN 4500-004:2024 - Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 004: Specific rules for titanium and titanium alloys
• Effective Date: 11-Jun-2025

Overview

kSIST FprEN 4500-004:2026 is part of the EN 4500 series and establishes the specific rules for drafting and presenting material standards for titanium and titanium alloys used in aerospace applications. Developed by the Slovenian Institute for Standardization (SIST), this European standard aims to harmonize the structure, terminology, and technical criteria applied in aerospace metallic material standards, particularly for titanium and titanium-based alloys.

By following these rules, manufacturers, suppliers, and standard developers ensure consistency and clarity in documentation, supporting both compliance and the safe, effective use of advanced titanium materials in aerospace engineering.

Key Topics

• Standardization of Material Documents: The standard details the structure and essential elements required in titanium and titanium alloy material standards, such as method of melting, forms, heat treatment, technical specification, and testing requirements.
• Harmonized Terminology and Presentation: Defines the language, order of information, and presentation style to foster clarity for manufacturers and end-users working in the aerospace sector.
• Specific Guidance for Titanium and Its Alloys: Outlines how to document critical technical aspects uniquely relevant to the characteristics of titanium materials, such as melting processes, mechanical properties, and form entries.
• Compliance with European Standardization: Developed in accordance with CEN/CENELEC Internal Regulations, kSIST FprEN 4500-004:2026 aligns with broader efforts to standardize aerospace materials across Europe and provides guidance compatible with related standards like EN 4258 and EN 4800 series.

Applications

kSIST FprEN 4500-004:2026 holds practical value for the following stakeholders in the aerospace industry:

• Material Producers & Suppliers: Facilitates the preparation of compliant technical documentation for titanium and titanium alloy semi-finished products, forgings, castings, wires, plates, tubes, and bars.
• Aerospace Manufacturers & Designers: Ensures consistent definition and communication of material properties, processing conditions, and qualification requirements, crucial for safety-critical aerospace components.
• Standard Developers & Regulatory Authorities: Serves as a reference for drafting new or revised metallic material standards involving titanium, supporting alignment across European and international aerospace supply chains.
• Quality Assurance & Procurement Teams: Provides a reliable basis for verifying supplier documentation and ensuring materials meet defined aerospace specifications and testing protocols.

By promoting a unified method for describing, specifying, and evaluating titanium material forms and properties, this standard helps streamline compliance, enhances traceability, and supports the rigorous quality controls required for aerospace applications.

Related Standards

The EN 4500 series and additional referenced documents provide a framework that ensures interoperability and comprehensive guidance:

• EN 4500-001: General rules for drafting and presentation of metallic material standards
• EN 4259: Aerospace series – Metallic materials – Definition of general terms
• EN 4800 series: Technical specifications for titanium and titanium alloys, covering plates, sheets, strips, bars, tubes, wires, forging stock, and forgings
• EN 4258: Organization of standardization and links between European standards
• CEN/CENELEC Internal Regulations – Part 3: Principles for structure and drafting of CEN and CENELEC documents

By adhering to kSIST FprEN 4500-004:2026 and its related standards, aerospace stakeholders can ensure their titanium material documentation is standardized, clear, and compliant with European requirements, supporting safety, efficiency, and innovation in aerospace engineering.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 4500-004:2025
01-oktober-2025
Aeronavtika - Kovinski materiali - Pravila za načrtovanje in predstavljanje
standardov za materiale - 004. del: Posebna pravila za titan in titanove zlitine
Aerospace series - Metallic materials - Rules for drafting and presentation of material
standards - Part 004: Specific rules for titanium and titanium alloys
Luft- und Raumfahrt - Metallische Werkstoffe - Regeln für das Erstellen und die
Gestaltung von Werkstoffnormen - Teil 004: Besondere Regeln für Titan und
Titanlegierungen
Série aérospatiale - Matériaux métalliques - Règles pour la rédaction et la présentation
des normes matériaux - Partie 004 : Règles spécifiques au titane et aux alliages de
titane
Ta slovenski standard je istoveten z: prEN 4500-004
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
49.025.30 Titan Titanium
oSIST prEN 4500-004:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 4500-004:2025
oSIST prEN 4500-004:2025
DRAFT
EUROPEAN STANDARD
prEN 4500-004
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2025
ICS 01.120 Will supersede EN 4500-004:2024
English Version
Aerospace series - Metallic materials - Rules for drafting
and presentation of material standards - Part 004: Specific
rules for titanium and titanium alloys
Série aérospatiale - Matériaux métalliques - Règles Luft- und Raumfahrt - Metallische Werkstoffe - Regeln
pour la rédaction et la présentation des normes für das Erstellen und die Gestaltung von
matériaux - Partie 004 : Règles spécifiques au titane et Werkstoffnormen - Teil 004: Besondere Regeln für
aux alliages de titane Titan und Titanlegierungen
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 4500-004:2025 E
worldwide for CEN national Members.

oSIST prEN 4500-004:2025
prEN 4500-004:2025 (E)
Contents Page
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 . 6
4.2.3 Form entries . 7
4.2.4 Additional information entries . 8
4.3 Introduction . 8
4.4 Scope, normative references, terms and definitions, requirements . 8
4.5 Table 1 . 9
4.5.1 Line 1: Material designation . 9
4.5.2 Line 2: Chemical composition. 9
4.5.3 Line 3: Method of melting . 9
4.5.4 Line 4.1: Form . 9
4.5.5 Line 4.2: Method of production . 9
4.5.6 Line 4.3: Further intended processing . 9
4.5.7 Line 4.4: Limit dimension(s) . 9
4.5.8 Line 5.1: Technical specification . 9
4.5.9 Line 5.2: Dimensional standard . 10
4.5.10 Line 6.1: Delivery condition and Heat treatment . 10
4.5.11 Line 6.2: Delivery condition code . 10
4.5.12 Line 7: Use condition and Heat treatment . 10
4.5.13 Line 8.1: Test sample(s) . 10
4.5.14 Line 8.2: Test piece(s) . 10
4.5.15 Line 8.3: Heat treatment . 11
4.5.16 Line 9: Dimensions concerned . 11
4.5.17 Line 10: Thickness of cladding on each face . 11
4.5.18 Line 11: Direction of test piece . 11
4.5.19 Lines 12 to 16: Tensile (T) . 11
4.5.20 Line 17: Hardness . 11
4.5.21 Line 18: Shear strength . 11
4.5.22 Line 19: Bending . 11
4.5.23 Line 20: Impact strength . 11
4.5.24 Lines 21 to 26: Creep (C) . 11
4.5.25 Line 27 . 11
4.5.26 Line 29: Reference heat treatment . 12
4.5.27 Lines 30 to 94 . 12
4.5.28 Line 95: Marking inspection . 12
4.5.29 Line 96: Dimensional inspection . 12
4.5.30 Line 97 . 12
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prEN 4500-004:2025 (E)
4.5.31 Line 98: Notes . 12
4.5.32 Line 99: Typical use . 12
4.5.33 Line 100: Product qualification . 12
4.6 Bibliography . 12
Annex A (informative) Completion of title page . 13
Annex B (informative) Completion of the introduction . 14
Annex C (informative) Completion of the scope, normative references, terms and
definitions, and requirements . 15
Annex D (informative) Completion of Table 1 . 16
Annex E (informative) Completion of the bibliography. 22
Bibliography . 23
oSIST prEN 4500-004:2025
prEN 4500-004:2025 (E)
Foreword
This document (prEN 4500-004:2025) has been by the Technical Committee ASD-STAN/D04
“Material”.
This document is currently submitted to the CEN Enquiry
This document will supersede EN 4500-004:2024.
prEN 4500-004:2025 includes the following significant technical changes with respect to
EN 4500-004:2024:
— 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 shall 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.
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 4500-004:2025
prEN 4500-004:2025 (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 4500-004:2025
prEN 4500-004:2025 (E)
1 Scope
The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards
for aerospace applications.
This Part 004 specifies the “Specific rules for titanium and titanium 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 4800-001, Aerospace series — Titanium and titanium alloys — Technical specification — Part 001:
Plates, sheets and strips
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 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 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
For forging stock and forgings, only the required grade shall be indicated in accordance with
EN 4800-001.
For other forms, use one or more of the following terms:
— non consumable electrode vacuum melted;
oSIST prEN 4500-004:2025
prEN 4500-004:2025 (E)
— consumable electrode vacuum arc melted;
— consumable electrode vacuum arc remelted;
— multiple melted;
— plasma cold hearth melted (P.C.H.M.);
— electron-beam melted.
4.2.3 Form entries
a) Sheets, strips, plates:
The terms may be qualified with one of the following terms:
1) cold rolled;
2) hot rolled;
b) Bars:
The term may be qualified with one or more of the following terms:
1) rolled;
2) extruded;
3) forged;
c) Sections:
The term may be qualified with the following term:
1) extruded;
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) extruded;
oSIST prEN 4500-004:2025
prEN 4500-004:2025 (E)
2) rolled;
3) drawn;
f) Forging stock;
g) Forgings;
h) Remelting stock;
i) Castings:
The term may be qualified with one or more of the following terms:
1) investment;
2) rammed graphite mould;
3) hot isostatically pressed (hipped);
j) Rings:
The term may be qualified with one or more of the following terms:
1) rolled;
2) forged;
3) welded.
4.2.4 Additional information entries
— For structural applications;
— For pressure applications;
— For superplastic forming;
— For machining;
— For forged fasteners;
— For machined fasteners;
— For welding.
4.3 Introduction
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.
oSIST prEN 4500-004:2025
prEN 4500-004:2025 (E)
See also 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.
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:
— alloy elements in decreasing maximum content order;
— gas elements in decreasing maximum content order;
— trace elements in decreasing maximum content order;
— ratio and/or total elements;
— other elements: each and total.
4.5.3 Line 3: Meth
...