EN 15085-3:2022+A1:2023

SLOVENSKI STANDARD
01-junij-2023
Železniške naprave - Varjenje železniških vozil in elementov - 3. del: Zahteve za
projektiranje (vključuje dopolnilo A1)
Railway applications - Welding of railway vehicles and components - Part 3: Design
requirements
Bahnanwendungen - Schweißen von Schienenfahrzeugen und -fahrzeugteilen - Teil 3:
Konstruktionsvorgaben
Applications ferroviaires - Soudage des véhicules ferroviaires et des pièces - Partie 3 :
Exigences de conception
Ta slovenski standard je istoveten z: EN 15085-3:2022+A1:2023
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15085-3:2022+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2023
EUROPÄISCHE NORM
ICS 25.160.10; 45.060.01 Supersedes EN 15085-3:2022
English Version
Railway applications - Welding of railway vehicles and
components - Part 3: Design requirements
Applications ferroviaires - Soudage des véhicules Bahnanwendungen - Schweißen von
ferroviaires et des pièces - Partie 3 : Exigences de Schienenfahrzeugen und -fahrzeugteilen - Teil 3:
conception Konstruktionsvorgaben
This European Standard was approved by CEN on 5 September 2022 and includes Amendment 1 approved by CEN on 1 February
2023.
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15085-3:2022+A1:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Design requirements . 9
4.1 General. 9
4.2 Dimensioning of welded joints . 10
4.3 Stress categories and stress factors . 10
4.4 Safety categories . 10
4.5 Weld performance classes . 10
4.6 Weld inspection classes . 11
5 Quality levels for imperfections . 12
5.1 General. 12
5.2 Quality levels for imperfections for fusion welded joints (beam welding excluded) 12
5.3 Quality levels for imperfections for beam welded joints . 13
5.3.1 General. 13
5.3.2 Quality levels for imperfection for friction stir welding. 14
5.3.3 Quality levels for imperfections for stud welding related to the weld performance
class . 14
5.3.4 Quality requirements for resistance spot welding, projection welding and resistance
seam welding related to the weld performance class . 14
5.3.5 Quality requirements for flash welding . 15
5.3.6 Defining quality requirements for other welding processes . 15
6 Selection of parent metals and welding consumables . 15
6.1 Selection of parent metals . 15
6.2 Selection of welding consumables . 15
7 Weld joint design . 16
7.1 General. 16
7.2 Design guidelines . 16
7.2.1 Fabricated box sections . 16
7.2.2 Butt welds on parts of dissimilar thickness . 17
7.2.3 Plug welds and slot welds . 18
7.2.4 Proximity of two joints . 19
7.2.5 Stiffeners welded across a butt weld . 19
7.2.6 Openings . 20
7.2.7 Design guidelines for stiffeners and gussets ends . 20
7.2.8 Gusset shape . 20
7.2.9 Weld return . 21
7.2.10 Fillet weld . 22
7.2.11 Use of run-on and run-off plates . 23
7.2.12 Highly restrained joints . 23
7.2.13 Mixing of joining techniques . 24
7.2.14 Prevention of corrosion problems . 25
7.2.15 Intermittent welds . 25
7.3 Joint preparation. 26
7.4 Methods to improve the fatigue strength (Post weld improvement) . 26
7.4.1 General . 26
7.4.2 Improvement of shape of weld toe . 27
7.4.3 Post Weld Heat Treatment (PWHT) — stress relief . 27
7.4.4 Introduction of compressive stress . 28
8 Design documentation related to welding . 28
8.1 Information on design drawings or documentation linked to the drawings . 28
8.2 Design review of welded components . 29
8.3 Use of existing drawings not according to EN 15085 . 30
Annex A (informative) List of welded joints (example) . 31
Annex B (informative) Joint preparation of welds . 32
Annex C (informative) Joint preparation for plug welds . 40
Annex D (informative) Types of joints in relation to stresses and inspection classes . 41
Annex E (informative) Flash welding . 42
Annex F (normative)  Resistance spot, seam and projection welding . 45
F.1 General . 45
F.2 Minimum shear pull forces . 50
Annex G (informative) Determination of safety category for welded joints . 52
Annex ZA (informative) Relationship between this European Standard and the Essential
requirements of Directive (EU) 2016/797 aimed to be covered . 53
Bibliography. 55

European foreword
This document (EN 15085-3:2022+A1:2023) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2023, and conflicting national standards shall
be withdrawn at the latest by October 2023.
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 includes Amendment 1 approved by CEN on 1 February 2023.
This document supersedes !EN 15085-3:2022".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
This series of European Standards EN 15085 “Railway applications — Welding of railway vehicles and
components” consists of the following parts:
— Part 1: General
— Part 2: Requirements of the organization of welding manufacturer
— Part 3: Design requirements
— Part 4: Production requirements
— Part 5: Inspection, testing and documentation
— Part 6: Maintenance
EN 15085-3:2022 includes the following changes with respect to EN 15085-3:2007.
— The weld performance class CP B has been divided into CP B1 and CP B2 (see Table 2);
— Terms and definitions have been updated;
— The following annexes have been reworked accordingly;
— Annex H has been deleted and part of its content has been integrated into the main text (see 6.2
and 7.1);
— Annex ZA has been added.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN we
...