EN 13445-2:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 13445-2:2014
SIST EN 13445-2:2014/A1:2017
SIST EN 13445-2:2014/A2:2018
SIST EN 13445-2:2014/A3:2018
Nekurjene tlačne posode - 2. del: Materiali
Unfired pressure vessels - Part 2: Materials
Unbefeuerte Druckbehälter - Teil 2: Werkstoffe
Récipients sous pression non soumis à la flamme - Partie 2: Matériaux
Ta slovenski standard je istoveten z: EN 13445-2:2021
ICS:
23.020.32 Tlačne posode Pressure vessels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13445-2
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.020.30 Supersedes EN 13445-2:2014
English Version
Unfired pressure vessels - Part 2: Materials
Récipients sous pression non soumis à la flamme - Unbefeuerte Druckbehälter - Teil 2: Werkstoffe
Partie 2: Matériaux
This European Standard was approved by CEN on 24 February 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-2:2021 E
worldwide for CEN national Members.

Issue 1 (2021-05)
Contents
Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and units . 7
3.1 Terms and définitions . 7
3.2 Symbols and units . 9
4 Requirements for materials to be used for pressure-bearing parts . 11
4.1 General . 11
4.2 Special provisions . 13
4.2.1 Special properties . 13
4.2.2 Design temperature above 20 °C . 13
4.2.3 Prevention of brittle fracture . 14
4.2.4 Design properties in the creep range . 14
4.2.5 Specific requirements for steels for fasteners . 14
4.3 Technical delivery conditions . 15
4.3.1 European Standards . 15
4.3.2 European Approval for Materials . 15
4.3.3 Particular material appraisals . 15
4.3.4 Clad products . 15
4.3.5 Welding consumables . 15
4.4 Marking . 15
5 Requirements for materials to be used for non-pressure parts . 16
(normative) Grouping system for steels for pressure equipment . 17
(normative) Requirements for prevention of brittle fracture at low temperatures . 19
B.1 General . 19
B.2 Material selection and impact energy requirements . 20
B.2.1 Introduction . 20
B.2.2 Method 1 . 20
B.2.3 Method 2 . 30
B.2.4 Method 3 — Fracture mechanics analysis . 42
B.3 General test requirements . 43
B.3.1 General . 43
B.3.2 Sub-sized specimens . 44
B.4 Welds . 45
B.4.1 General . 45
B.4.2 Welding procedure qualification . 45
B.4.3 Production test plates . 45
B.5 Materials for use at elevated temperatures . 45
B.5.1 General . 45
B.5.2 Materials . 46
B.5.3 Welding procedure qualification and production test plates . 46
B.5.4 Start up and shut down procedure . 46
B.5.5 Pressure test . 46
Issue 1 (2021-05)
(informative) Procedure for determination of the weld creep strength reduction
factor (WCSRF) . 54
(informative) Technical delivery conditions for clad products for pressure
purposes . 55
D.1 Introductory note . 55
D.2 Requirements for the material . 55
D.3 Requirements for the deposited material . 55
D.4 Qualification of the cladding procedure . 56
D.5 Production tests . 57
(informative) European steels for pressure purposes . 59
E.1 European Standards for steels and steel components for pressure purposes . 59
E.2 European standardised steels grouped according to product forms . 60
(normative) Special provisions for materials and components . 83
F.1 General . 83
F.2 Mechanical properties and technical delivery conditions for fasteners in accordance
with EN ISO 3506 . 83
F.2.1 Mechanical properties for austenitic bolts in accordance with EN ISO 3506-1 . 83
F.2.2 Delivery conditions for austenitic fasteners. 84
(informative) History of EN 13445-2 . 85
Y.1 Differences between EN 13445-2:2014 and EN 13445-2:2021. 85
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU aimed to be covered . 86
Bibliography . 87

Issue 1 (2021-05)
European foreword
This document (EN 13445-2:2021) has been prepared by Technical Committee CEN/TC 54 “Unfired
pressure vessels”, the secretariat of which is held by BSI.
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 November 2021, and conflicting national standards shall
be withdrawn at the latest by November 2021.
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 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).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
list of all parts in the EN 13445 series can be found on the CEN website.
Although these Parts may be obtained separately, it should be recognised that the Parts are inter-
dependant. As such the manufacture of unfired pressure vessels requires the application of all the
relevant Parts in order for the requirements of the Standard to be satisfactorily fulfilled.
Corrections to the standard interpretations where several options seem possible are conducted through
the Migration Help Desk (MHD). Information related to the Help Desk can be found at http://www.unm.fr
(en13445@unm.fr). A form for submitting questions can be downloaded from the link to the MHD
website. After subject experts have agreed an answer, the answer will be communicated to the
questioner. Corrected pages will be given specific issue number and issued by CEN according to CEN
Rules. Interpretation sheets will be posted on the website of the MHD.
This document supersedes EN 13445-2:2014. This new edition incorporates the Amendments which
have been approved previously by CEN members, and the corrected pages up to Issue 5 without any
further technical change. Annex Y provides details of significant technical changes between this European
Standard and the previous edition.
Amendments to this new edition may be issued from time to time and then used immediately as
alternatives to rules contain
...