1、BRITISH STANDARD Flanges and their joints Bolting Part 2: Classification of bolt materials for steel flanges, PN designated The European Standard EN 1515-2:2001 has the status of a British Standard ICs 21.060.01; 23.040.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN
2、1 5 1 5-2 1200 1 British Standards BS EN 1515-212001 National foreword This British Standard is the official English language version of The UKparticipation in its preparation was entrusted toTechnica1 Committee PSE/15, Flanges, which has the responsibility to: EN 1515-212001. - - aid enquirers to u
3、nderstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represent
4、ed on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or
5、 by using the “Search”faci1ity ofthe BSI Electronic Catalogue or ofBritish Stan dards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immuni
6、ty from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 23 July 2002 Summary of pages This document comprises a front cover,
7、 an inside front cover, the EN title page, pages 2 to 19 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.No. I Date I Comments OBSI 23 July 2002 ISBN O 580 40143 X EUROPEAN STANDARD NORME EUROPEN
8、NE EUROPISCHE NORM EN 1515-2 December 2001 ICs 21.060.01; 23.040.60 English version Flanges and their joints - Bolting - Part 2: Classification of bolt materials for steel flanges, PN designated Brides et leurs assemblages - Boulonnerie - Partie 2: Classification de matriaux de boulonnerie pour brid
9、es en acier, dsignes PN Flansche und ihre Verbindungen - Schrauben und Muttern - Teil 2: Klassifizierung von Schraubenwerkstoffen fr Stahlflansche, nach PN bezeichnet This European Standard was approved by CEN on 20 October 2001 CEN members are bound to comply with the CENKENELEC Internal Regulation
10、s 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 Management Centre or to any CEN member. This European
11、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 Management Centre has the same status as the official versions. CEN members are the national st
12、andards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NOR
13、MALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1515-2:2001 E EN 1515-2:2001 (E) Contents Page Foreword 2 2 Normative references 2 3 Combination of materials
14、3 4 Classification of bolt materials . 3 Table 1 Classification of bolt materials 4 Annex A (informative) Basic information 17 Annex ZA (informative) Relationship with EU Directive(s) . 19 1 Scope 2 . Foreword This European Standard has been prepared by Technical Committee CEN/TC 74 ”Flanges and the
15、ir 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 June 2002, and conflicting national standards shall be withdrawn at the latest by June 2002. Th
16、is 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. EN 151 5
17、 consists of two Parts: Part 1 : Selection of bolting; Part 2: Classification of bolt materials for steel flanges, PN designated. The annexes A and ZA are informative. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
18、ment this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 1 Scope This European Standard covers the classification of bolt materials
19、combination with the flange material groups of steel flanges prEN 1092-1 (PN-designated). Bolt materials are listed in EN 1515-1, flange material groups are listed in prEN 1092-1. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publicat
20、ions. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard, only when incorporated in it by amendment or revision.
21、 For undated references the latest edition of the publication referred to applies (including amendments). prEN 1 092- 1 , Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part I: Steel flanges. 2 EN 1515-2:2001 (E) EN 151 5-1 , Flanges and thei
22、r joints - Bolting - Part I: Selection of bolting. EN 10269, Steels and nickel alloys for fasteners for use at elevated and/or low temperature properties. EN IS0 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel - Part I: Bolts, screws and studs (IS0 898- I: 1999). EN IS
23、0 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners - Part I: Bolts, screws and studs (IS0 3506- I: 1997). 3 Combination of materials Bolt materials can be combined with flange material groups as given in Table 1. This table is valid for all flanges for which pressure te
24、mperature (p/T) ratings are given in prEN 1092-1. For flanges which have no p/T ratings (e.g. DN 700 and above), the tables may be used as a guide. All bolt materials can be used in the range of the p/T ratings given for the flanges. Restrictions due to the classification shall be observed (see clau
25、se 4). WARNING Bold materials 4.6 and 6.8 are not intended for the use in the scope of the Pressure Equipment Directive. 4 Classification of bolt materials The classification of bolt materials as given in Table 1 is based on the comparison of the strengths of the flange material and the bolt materia
26、l. The strength ratio r of the flange/bolt combination chosen is compared with the strength ratio of the flange bolt combination used for the standard flange calculation (see annex A). For each flange material group the classification is done in three strength levels: Low strength: The strength rati
27、o of the chosen flange/bolt combination is less than that used in the standard flange calculation. These bolts may be used for less severe service, e.g. for water service or in case of oversized flanged joints. For definition of these service conditions, special experience is necessary otherwise a r
28、ecalculation of the flanged joint shall be done. Normal strength: The strength ratio of the chosen flange/bolt combination is similar (within defined limits) to that used in the standard flange calculation. These bolts may be used for all service in the range of the P/T-ratings unless there are othe
29、r restrictions to the contrary. High strength: The strength ratio of the chosen flange/bolt combination is much more higher than that used in the standard flange calculation. These bolts may be used in the same range like normal strength level bolting. During assembly however, care should be taken n
30、ot to overstress the flanges (e. g. by means of torque control). 3 EN 1515-2:2001 (E) Table 1 - Classification of bolt materials Flange materials prEN Bolt materials EN 1515-1 continued Classification Strength Low Normal High Low Normal High 4 EN 1515-2:2001 (E) Table 1 (continued) Flange materials
31、prEN Bolt materials EN 1515-1 continued Classification Strength Low Normal High Low Normal High 5 EN 1515-2:2001 (E) Group 5E0 Table 1 (continued) Type Material/property class lCr-O,5Mo 4.6 5.6 I Flange materials prEN 1092-1 6E0 Bolt mat1 30CrNiMo8 2Cr-1 Mo 4.6 I 6.8 I 8.8 I25CrMo4 42CrMo4 42CrMo5-6
32、 40CrMoV4-6 21 CrMoV5-7 20CrMoVTiB4-I O X6NiCrTiMoVB 25-1 5-2 I 5.6 A4-50,A2-50 X5CrNiMol7-12-2 AT X5CrNil8-I O I 8.8 40CrMoV4-6 21 CrMoV5-7 20CrMoVTiB4-I O A4-70, A2-70 X5CrNil8-I O AT+C rials EN 151: Standard EN IS0 898-1 EN IS0 898-1 EN IS0 3506-1 EN 10269 EN 10269 EN IS0 EN IS0 898-1 898-1 EN 10
33、269 EN 10269 EN 10269 EN 10269 EN 10269 EN 10269 EN 10269 EN 10269 EN IS0 3506-1 _ EN 10269 EN 10269 EN 10269 EN IS0 898-1 EN IS0 EN IS0 898-1 3506-1 EN 10269 EN 10269 EN IS0 898-1 EN IS0 EN 10269 EN 10269 EN 10269 898-1 EN 10269 EN 10269 EN 10269 EN 10269 EN 10269 EN IS0 3506-1 EN 10269 EN 10269 EN
34、 10269 -1 Dia. Line No. 0,9 0 High strength: for bolt materials with r min 0,9; for bolt materials with r 20 2 2. 18 EN 1515-2:2001 (E) 4nnex 1, ;lause 4 4nnex 1, ;lause 4.1 a) Annex ZA (i n f o rm a t ive) Materials: Materials for pressure equipment to be suitable during lifetime - unless replaceme
35、nt is foreseen. Materials for pressurized parts to have appropriate properties for all operating and test conditions: - to be sufficiently ductile and tough; - characteristics of material to comply with ESRs at 7.5 - to be selected in order to prevent brittle-type fracture, or appropriate measures t
36、o be taken. Relationship with EU Directive(s) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association (EFTA) and s
37、upports essential requirements of EU Directive 97/23/EC (Pressure Equipment Directive, PED). WARNING: scope of this standard. Other requirements and other EU Directives may be applicable to the products falling within the The following clauses of this standard are likely to support requirements of D
38、irective 97/23/EC. Compliance with the clauses of this standard provides one means of conforming with the specific essential requirements of the Directive concerned and associated EFTA regulations. Table ZA.l - Correspondence between this European Standard and Directive 97/23/EC Clause/ subclause of
39、 this European Standard 3 and 4 Essential requirements (ERS) of Directive 97/23/EC Qualifying rem arks/ notes 19 BS EN 1515-2:2001 B SI 389 Chiswick High Road London w4 4AL BSI -British Standards Institution BSI is the independent national body responsible for preparing British Standards. It present
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