EN 1515-4:2021

Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 2014/68/EU

This document is applicable to the selection of bolting for flanged joints on equipment subject to the Pressure Equipment Directive 2014/68/EU.
It specifies standards and additional requirements for dimensions, material properties and technical conditions of delivery for bolting.
NOTE 1   Washers are not within the scope of this document.
The selection is based on commonly used bolting. It covers common temperature ranges of the general service of flanges.
When selecting bolting according to this document it is essential to take into account environmental conditions and other parameters including type of fluids, corrosion hazards, sour service, low temperature brittle failure and relaxation at elevated temperatures.
The purpose of this document is to provide a selection of most commonly used bolting types and bolting material combinations.
It is not the intention to specify all possible applications but to give guidance on the most common applications. For example, application limits for material in the creep range are not explicitly covered in this document. Where material standard provides mechanical properties for the creep range respective reference is made in Table 3.
NOTE 2   Special services and ambient conditions may require the application of coatings. It is the purchaser’s option to decide on this. Depending on the coating used, a verification of the temperature ranges given in Table 3 and Table 4 may be required.
NOTE 3   In Annex B there are bolting types and bolting material combinations according to commonly used national standards other than those listed in Table 2, Table 3 and Table 4.

Flansche und ihre Verbindungen - Schrauben und Muttern - Teil 4: Auswahl von Schrauben und Muttern zur Anwendung im Gültigkeitsbereich der Druckgeräterichtlinie 2014/68/EU

Dieses Dokument ist anzuwenden für die Auswahl von Schrauben und Muttern für Flanschverbindungen bei Geräten, die der Druckgeräterichtlinie 2014/68/EU unterliegen.
Es legt Normen und zusätzliche Anforderungen an Maße, Werkstoffeigenschaften und technische Lieferbedingungen für Schrauben und Muttern fest.
ANMERKUNG 1 Unterlegscheiben liegen nicht im Anwendungsbereich dieses Dokuments.
Die Auswahl beruht auf allgemein gebräuchlichen Schrauben und Muttern. Sie umfasst übliche Temperaturbereiche für den allgemeinen Betrieb von Flanschen.
Bei der Auswahl von Schrauben und Muttern nach diesem Dokument ist es unerlässlich, Umgebungsbedingungen und weitere Parameter einschließlich der Art von Flüssigkeiten, Korrosions-gefährdungen, sauren Betriebsbereichen, Sprödbruch bei niedrigen Temperaturen und Relaxation bei erhöhten Temperaturen zu berücksichtigen.
Der Zweck dieses Dokuments ist es, eine Auswahl der gebräuchlichsten Arten und Werkstoffkombinationen von Schrauben und Muttern bereitzustellen.
Es ist nicht beabsichtigt, sämtliche möglichen Anwendungen festzulegen, sondern eine Leitlinie für die gebräuchlichsten Anwendungen bereitzustellen. Beispielsweise werden Anwendungsgrenzen von Werkstoffen im Zeitstandbereich in diesem Dokument nicht explizit behandelt. Wenn in einer Werkstoffnorm mechanische Eigenschaften für den Zeitstandbereich bereitgestellt werden, wird in Tabelle 3 darauf entsprechend verwiesen.
ANMERKUNG 2 Spezielle Betriebsbereiche und Umgebungsbedingungen können das Aufbringen von Beschichtungen erfordern. Die diesbezügliche Entscheidung liegt beim Besteller. In Abhängigkeit von der verwendeten Beschichtung kann eine Überprüfung der in Tabelle 3 und Tabelle 4 angegebenen Temperaturbereiche erforderlich sein.
ANMERKUNG 3 Anhang B enthält Arten und Werkstoffkombinationen von Schrauben und Muttern entsprechend gebräuchlicher nationaler Normen, die nicht in Tabelle 2, Tabelle 3 und Tabelle 4 aufgeführt sind.

Brides et leurs assemblages - Boulonnerie - Partie 4 : Sélection de la boulonnerie pour équipements relevant de la Directive Equipements sous pression 2014/68/EU

Le présent document est applicable à la sélection de la boulonnerie destinée aux assemblages à brides des équipements relevant de la Directive Équipements sous pression 2014/68/UE.
Elle spécifie les normes et les exigences supplémentaires relatives aux dimensions, matériaux et conditions techniques de livraison applicables à la boulonnerie.
NOTE 1   Les rondelles n’entrent pas dans le domaine d’application du présent document.
La sélection s’appuie sur la boulonnerie couramment utilisée. Elle couvre les plages de température d'usage général des brides.
Lors de la sélection de la boulonnerie conformément au présent document, il est essentiel de tenir compte des conditions environnementales et d'autres paramètres tels que le type de fluide, les risques de corrosion, les applications avec gaz acides, la rupture fragile à basse température et la relaxation à température élevée.
L’objectif du présent document est de fournir une sélection des types de boulonnerie et des combinaisons de matériaux de boulonnerie les plus couramment utilisés.
Il n’a pas vocation à spécifier toutes les applications possibles mais plutôt à fournir des lignes directrices sur les applications les plus courantes. Par exemple, les limites d'application pour les matériaux dans le domaine du fluage ne sont pas explicitement traitées dans le présent document. Lorsque la norme de matériau de base fournit des propriétés mécaniques pour le domaine du fluage, la référence est indiquée respectivement dans le Tableau 3.
NOTE 2   Des applications spéciales et des conditions à température ambiante peuvent exiger l’application de revêtements. Cette option est laissée à l’initiative de l’acheteur. En fonction du revêtement utilisé, une vérification des plages de température données dans le Tableau 3  et le Tableau 4 peut s’avérer nécessaire.
NOTE 3        Dans l'Annexe B, sont spécifiés des types de boulons et des combinaisons de matériaux de boulons selon les normes nationales communément utilisées autres que celles énumérées dans le Tableau 2, le Tableau 3 et
le Tableau 4.

Prirobnice in prirobnični spoji - Vijaki in matice - 4. del: Izbira vijakov in matic za opremo, ki je v skladu z Direktivo o tlačni opremi 2014/68/EU

General Information

• Status: Published
• Publication Date: 30-Mar-2021
• Withdrawal Date: 29-Sep-2021
• ICS: 21.060.10 - Bolts, screws, studs
• ICS: 21.060.20 - Nuts
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: CEN/TC 74 - Flanges and their joints
• Drafting Committee: CEN/TC 74/WG 9 - Bolting
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 31-Mar-2021
• Completion Date: 31-Mar-2021
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 1515-4:2021 - Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 2014/68/EU

Relations

• Replaces: EN 1515-4:2009 - Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 97/23/EC
• Effective Date: 07-Apr-2021
• Corrected By: EN 1515-4:2021/AC:2022 - Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 2014/68/EU
• Effective Date: 22-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2021
Nadomešča:
SIST EN 1515-4:2010
Prirobnice in prirobnični spoji - Vijaki in matice - 4. del: Izbira vijakov in matic za
opremo, ki je v skladu z Direktivo o tlačni opremi 2014/68/EU
Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to
the Pressure Equipment Directive 2014/68/EU
Flansche und ihre Verbindungen - Schrauben und Muttern - Teil 4: Auswahl von
Schrauben und Muttern zur Anwendung im Gültigkeitsbereich der Druckgeräterichtlinie
2014/68/EU
Brides et leurs assemblages - Boulonnerie - Partie 4 : Sélection de la boulonnerie pour
équipments relevant de la Directive Equipments sous pression 2014/68/EU
Ta slovenski standard je istoveten z: EN 1515-4:2021
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
21.060.20 Matice Nuts
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1515-4
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 21.060.10; 21.060.20; 23.040.60 Supersedes EN 1515-4:2009
English Version
Flanges and their joints - Bolting - Part 4: Selection of
bolting for equipment subject to the Pressure Equipment
Directive 2014/68/EU
Brides et leurs assemblages - Boulonnerie - Partie 4 : Flansche und ihre Verbindungen - Schrauben und
Sélection de la boulonnerie pour équipments relevant Muttern - Teil 4: Auswahl von Schrauben und Muttern
de la Directive Equipments sous pression 2014/68/EU zur Anwendung im Gültigkeitsbereich der
Druckgeräterichtlinie 2014/68/EU
This European Standard was approved by CEN on 1 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 1515-4:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
3.1 Terms and definitions . 5
3.2 Symbols and units . 7
4 Selection of bolting types and materials . 7
4.1 General. 7
4.2 Selection of bolting types . 7
4.3 Selection of bolting material combinations . 8
4.4 Requirements of bolting related to property classes . 11
5 Manufacturing . 11
5.1 General. 11
5.2 Coating . 12
6 Technical conditions of delivery . 12
6.1 General. 12
6.2 Requirements for prevention of brittle fracture at low temperatures . 12
7 Traceability and inspection documents . 14
7.1 Traceability . 14
7.2 Inspection documents . 14
7.3 Alternative to inspection documents . 15
8 Ordering information . 15
Annex A (normative) Studs threaded full length . 16
Annex B (informative) Additional bolting types and materials according to commonly used
national standards . 17
Annex C (informative) Additional requirements for hot dip galvanized carbon steel bolting . 18
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU aimed to be covered . 19
Bibliography . 20

European foreword
This document (EN 1515-4:2021) has been prepared by Technical Committee CEN/TC 74 “Flanges and
their joints”, 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 September 2021, and conflicting national standards
shall be withdrawn at the latest by September 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 supersedes EN 1515-4:2009.
EN 1515, Flanges and their joints — Bolting, consists of the following parts:
— Part 1: Selection of bolting;
— Part 2: Classification of bolt materials for steel flanges, PN designated;
— Part 3: Classification of bolt materials for steel flanges, class designated;
— Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 2014/68/EU.
Main changes compared to edition EN 1515-4:2009:
— explanation of requirements for starting material in accordance to EN 10269:2013;
— some temperature ranges and assignment of material groups are amended in Table 3;
— option for traceability by means of lot identification marking instead of inspection documents;
— separate requirements have been given to bolting other than those in EN 10269:2013;
— requirements for prevention of brittle fracture have been updated.
This document has been prepared under a mandate 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.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the
United Kingdom.
1 Scope
This document is applicable to the selection of bolting for flanged joints on equipment subject to the
Pressure Equipment Directive 2014/68/EU.
It specifies standards and additional requirements for dimensions, material properties and technical
conditions of delivery for bolting.
NOTE 1 Washers are not within the scope of this document.
The selection is based on commonly used bolting. It covers common temperature ranges of the general
service of flanges.
When selecting bolting according to this document it is essential to take into account environmental
conditions and other parameters including type of fluids, corrosion hazards, sour service, low
temperature brittle failure and relaxation at elevated temperatures.
The purpose of this document is to provide a selection of most commonly used bolting types and bolting
material combinations.
It is not the intention to specify all possible applications but to give guidance on the most common
applications. For example, application limits for material in the creep range are not explicitly covered in
this document. Where material standard provides mechanical properties for the creep range respective
reference is made in Table 3.
NOTE 2 Special services and ambient conditions may require the application of coatings. It is the purchaser’s
option to decide on this. Depending on the coating used, a verification of the temperature ranges given in Table 3
and Table 4 may be required.
NOTE 3 In Annex B there are bolting types and bolting material combinations according to commonly used
national standards other than those listed in Table 2, Table 3 and Table 4.
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 764-5:2014, Pressure equipment - Part 5: Inspection documentation of metallic materials and
compliance with the material specification
EN 1092-1:2018, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 1: Steel flanges
EN 1759-1:2004, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, Class
designated - Part 1: Steel flanges, NPS 1/2 to 24
EN 10204:2004, Metallic products - Types of inspection documents
EN 10269:2013, Steels and nickel alloys for fasteners with specified elevated and/or low temperature
properties
EN 13445-3:2014, Unfired pressure vessels - Part 3: Design

As impacted by EN 13445-3:2014/A1:2015, EN 13445-3:2014/A2:2016, EN 13445-3:2014/A3:2017,
EN 13445-3:2014/A4:2018, EN 13445-3:2014/A5:2018, EN 13445-3:2014/A6:2019, EN 13445-3:2014/A7:2019
and EN 13445-3:2014/A8:2019.
EN 13480-3:2017, Metallic industrial piping - Part 3: Design and calculation
EN ISO 898-1:2013, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts,
screws and studs with specified property classes - Coarse thread and fine pitch thread (ISO 898-1:2013)
EN ISO 898-2:2012, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts
with specified property classes - Coarse thread and fine pitch thread (ISO 898-2:2012)
EN ISO 3269:2019, Fasteners - Acceptance inspection (ISO 3269:2019)
EN ISO 3506-1:2020, Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners -
Part 1: Bolts, screws and studs with specified grades and property classes (ISO 3506-1:2020)
EN ISO 3506-2:2020, Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners -
Part 2: Nuts with specified grades and property classes (ISO 3506-2:2020)
EN ISO 4014:2011, Hexagon head bolts - Product grades A and B (ISO 4014:2011)
EN ISO 4017:2014, Fasteners - Hexagon head screws - Product grades A and B (ISO 4017:2014)
EN ISO 4032:2012, Hexagon regular nuts (style 1) - Product grades A and B (ISO 4032:2012)
EN ISO 4033:2012, Hexagon high nuts (style 2) - Product grades A and B (ISO 4033:2012)
EN ISO 4042:2018, Fasteners - Electroplated coating systems (ISO 4042:2018)
EN ISO 6892-2:2018, Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature
(ISO 6892-2:2018)
EN ISO 16228:2018, Fasteners - Types of inspection documents (ISO 16228:2017)
EN ISO 16426:2002, Fasteners -
...