SIST EN 1515-3:2006

Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges, class designated

This European Standard covers the classification of bolt materials used in combination with steel flanges ac-cording to EN 1759-1 (Class designated).
Bolt materials are listed in EN 1515-1; flange material groups are listed in EN 1759-1.

Flansche und ihre Verbindungen - Schrauben und Muttern - Teil 3: Klassifizierung von Schraubenwerkstoffen für Stahlflansches, nach Class bezeichnet

Diese Europäische Norm behandelt die Klassifizierung von Schraubenwerkstoffen, die in Kombination mit
Stahlflanschen nach EN 1759-1 (nach Class bezeichnet) verwendet werden.
Schraubenwerkstoffe sind in EN 1515-1 aufgeführt, Flansch-Werkstoffgruppen sind in EN 1759-1 aufgeführt.

Brides et leur assemblages - Boulonnerie - Partie 3: Classification de matériaux de boulonnerie pour brides en acier, désignées Class

Le présent document traite de la classification et de la combinaison des matériaux de boulonnerie avec les
brides en acier conformément à l�EN 1759-1 (désignées Class).
Les matériaux de boulonnerie et les groupes de matériaux des brides sont répertoriés respectivement dans
l�EN 1515-1 et l�EN 1759-1.

Prirobnice in prirobnični spoji - Vijaki in matice - 3. del: Razvrstitev materialov vijakov in matic za jeklene prirobnice z oznako Class

General Information

• Status: Published
• Publication Date: 28-Feb-2006
• ICS: 21.060.10 - Bolts, screws, studs
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2006
• Due Date: 01-Mar-2006
• Completion Date: 01-Mar-2006
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: EN 1515-3:2005 - Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges, class designated

Overview

EN 1515-3:2005 - "Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges, class designated" is a CEN European Standard that classifies bolting materials for use with steel flanges specified in EN 1759-1 (Class designated). The standard links bolt material types listed in EN 1515-1 to flange material groups in EN 1759-1 and defines strength categories and practical limitations for use in flanged joints.

Key topics

• Scope and purpose
  • Classification of bolt materials intended for steel flanges (Class designated) to ensure compatible mechanical performance.
• Classification rules
  • Materials are grouped into low, intermediate and high strength bolting based on allowable stress thresholds (high ≥ 170 N/mm²; low ≤ 140 N/mm²).
  • Classification follows rules derived from ASME B16.5 and the development approach described in Annex A.
• Material references
  • Uses material entries from EN 1515-1 and strength data from standards such as EN 10269, EN ISO 898-1 and EN ISO 3506-1.
• Use limitations and assembly guidance
  • High-strength bolting may be used in any flanged joint but requires careful assembly (e.g., torque control) to avoid overstressing flanges.
  • Intermediate-strength bolting can be used where capability is verified per EN 1759-1:2004 (clause 5.3.1).
  • Low-strength bolting is restricted to CL 150 and CL 300 flange classes and requires verification with attention to gasket behaviour.

Applications

EN 1515-3 is directly applicable to:

• Piping designers and mechanical engineers specifying bolting for flanged joints in pressure piping systems.
• Procurement and specification teams selecting bolt materials for steel flanges (Class designated).
• Manufacturers of flanges, fasteners and bolted joint assemblies who require harmonized material classification.
• Maintenance and operations in oil & gas, power generation, petrochemical, water and process industries where safe flange bolting selection is required.

Using EN 1515-3 helps ensure correct bolt material selection, reliable flange joint performance, and compliance with European national adoptions of the standard.

Related standards

• EN 1759-1:2004 - Circular flanges for pipes, valves, fittings and accessories (Class designated)
• EN 1515-1 - Flanges and their joints - Bolting - Part 1: Selection of bolting
• EN 10269, EN ISO 898-1, EN ISO 3506-1 - Material and fastener property standards
• ASME B16.5 - Reference for classification rules

Keywords: EN 1515-3:2005, flanges, bolting, bolt materials, steel flanges, class designated, EN 1759-1, flange joint classification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2006
3ULUREQLFHLQSULUREQLþQLVSRML9LMDþQH]YH]HGHO5D]YUVWLWHYPDWHULDORY
YLMDNRYLQPDWLF]DMHNOHQHSULUREQLFH]R]QDNR&ODVV
Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges,
class designated
Flansche und ihre Verbindungen - Schrauben und Muttern - Teil 3: Klassifizierung von
Schraubenwerkstoffen für Stahlflansches, nach Class bezeichnet
Brides et leur assemblages - Boulonnerie - Partie 3: Classification de matériaux de
boulonnerie pour brides en acier, désignées Class
Ta slovenski standard je istoveten z: EN 1515-3:2005
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
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.

EUROPEAN STANDARD
EN 1515-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS 21.060.10; 23.040.60
English Version
Flanges and their joints - Bolting - Part 3: Classification of bolt
materials for steel flanges, class designated
Brides et leur assemblages - Boulonnerie - Partie 3: Flansche und ihre Verbindungen - Schrauben und Muttern -
Classification de matériaux de boulonnerie pour brides en Teil 3: Klassifizierung von Schraubenwerkstoffen für
acier, désignées Class Stahlflansches, nach Class bezeichnet
This European Standard was approved by CEN on 8 August 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1515-3:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Classification of bolt materials .4
Annex A (informative) Basic information.6
Bibliography.7

Foreword
This European Standard (EN 1515-3:2005) 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 March 2006, and conflicting national standards shall be withdrawn at
the latest by March 2006.
EN 1515 "Flanges and their joints – Bolting" consists of three 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.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-
mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-
bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and
United King
...