prEN 13262

SLOVENSKI STANDARD
01-april-2023
Nadomešča:
SIST EN 13262:2020
Železniške naprave - Kolesne dvojice in podstavni vozički - Kolesa - Zahtevane
lastnosti proizvoda
Railway applications - Wheelsets and bogies - Wheels - Product requirements
Bahnanwendungen - Radsätze und Drehgestelle - Räder - Produktanforderungen
Applications ferroviaires - Essieux montés et bogies - Roues - Prescriptions pour le
produit
Ta slovenski standard je istoveten z: prEN 13262
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2023
ICS 45.040 Will supersede EN 13262:2020
English Version
Railway applications - Wheelsets and bogies - Wheels -
Product requirements
Applications ferroviaires - Essieux montés et bogies - Bahnanwendungen - Radsätze und Drehgestelle -
Roues - Prescriptions pour le produit Räder - Produktanforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13262:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Product definition . 8
4.1 Chemical composition . 8
4.1.1 Values to be achieved . 8
4.1.2 Sampling position . 8
4.1.3 Chemical analysis . 8
4.2 Mechanical characteristics . 8
4.2.1 Characteristics from the tensile test . 8
4.2.2 Hardness characteristics in the rim . 10
4.2.3 Impact resistance characteristics . 13
4.2.4 Fatigue characteristics . 13
4.2.5 Toughness characteristics of the rim . 14
4.3 Heat treatment homogeneity . 16
4.3.1 Values to be achieved . 16
4.3.2 Test pieces . 16
4.3.3 Test method . 16
4.4 Material cleanliness . 16
4.4.1 Micrographic cleanliness . 16
4.4.2 Internal integrity . 18
4.5 Residual stresses . 21
4.5.1 General . 21
4.5.2 Values to be achieved . 21
4.5.3 Test piece . 21
4.5.4 Measurement methods . 21
4.6 Surface characteristics . 21
4.6.1 Surface finish . 21
4.6.2 Surface condition for the oil injection hole . 22
4.6.3 Surface integrity . 22
4.7 Geometrical tolerances . 23
4.7.1 General . 23
4.7.2 Wear groove . 26
4.8 Static imbalance .26
4.9 Coating and protection against corrosion .27
4.9.1 General requirements .27
4.9.2 Thermo-sensitive paint on tread braked wheels .27
4.10 Marking .28
5 Product qualification . 29
6 Conditions of supply of the product . 29
7 Tips for choosing the steel grade . 29
Annexe A (normative) Evaluation process for the acceptance of new materials . 30
A.1 General . 30
A.2 First step: Characterisation of a new steel grade . 30
A.3 Step two: Testing in service . 30
A.4 Step three: Report . 31
Annexe B (informative) Examples of test benches for fatigue testing . 32
B.1 Test piece . 32
B.2 First test method . 32
B.3 Second test method . 33
B.4 Third test method . 34
Annexe C (informative) Strain gauge method of determining the variation in
circumferential residual stresses deep under the running surface (destructive
method) . 36
C.1 Method principle . 36
C.2 Procedure . 36
C.3 Calculation of the variation of the circumferential residual stress deep under
the running surface . 37
Annexe D (normative) Product qualification . 41
D.1 Introduction . 41
D.2 General . 41
D.3 Requirements . 43
D.4 Qualification procedure . 43
D.5 Validity of the qualification . 46
D.6 Qualification record . 46
Annexe E (normative) Conditions of supply of the product . 48
E.1 Introduction . 48
E.2 General . 48
E.3 Delivery states . 49
E.4 Unit checks. 49
E.5 Batch sampling check . 49
E.6 Quality plan . 51
E.7 Permissible repairs . 52
E.8 Retest . 52
Annexe F (normative) Measurement of the hydrogen content at the time of development
of steel for monobloc wheels . 53
F.1 General . 53
F.2 Sampling . 53
F.3 Analysis method .
...