1、BS EN 15048-2:2016Non-preloaded structuralbolting assembliesPart 2: Fitness for purposeBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 15048-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15048-2:2016.It supersedes
2、BS EN 15048-2:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9, Fasteners.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions
3、 of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 87332 4ICS 21.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、 the authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 15048-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15048-2 July 2016 ICS 21.060.01 Supersedes EN 15048-2:2007English Version Non-
5、preloaded structural bolting assemblies - Part 2: Fitness for purpose Boulonnerie de construction mtallique non prcontrainte - Partie 2: Aptitude lemploi Garnituren fr nicht vorgespannte Schraubverbindungen im Metallbau - Teil 2: Gebrauchstauglichkeit This European Standard was approved by CEN on 25
6、 March 2016. 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
7、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 th
8、e 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ire
9、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cen
10、tre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15048-2:2016 EBS EN 15048-2:2016EN 15048-2:2016 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5
11、 3 Terms and definitions . 6 4 Symbols . 6 5 Technical requirements for bolting assemblies 6 5.1 Composition of structural bolting assemblies 6 5.2 Product requirements . 6 5.3 Manufacturing process 7 5.3.1 Material . 7 5.3.2 Nuts 7 5.3.3 Bolts . 7 5.3.4 Finish and coating . 7 5.4 Marking . 7 5.4.1
12、Bolts . 7 5.4.2 Nuts 8 5.4.3 Washers 9 5.5 Delivery conditions 9 6 Tensile test of bolting assemblies for determination of tensile resistance . 9 6.1 Principle . 9 6.2 Test conditions . 9 6.2.1 General 9 6.2.2 Test apparatus 9 6.2.3 Test assemblies . 10 6.2.4 Test set-up 10 6.2.5 Test procedure 10 6
13、.3 Required failure mode . 10 6.4 Required tensile resistance 11 7 Test report 11 Annex A (informative) Special testing conditions and procedures 12 Bibliography . 13 BS EN 15048-2:2016EN 15048-2:2016 (E) 3 European foreword This document (EN 15048-2:2016) has been prepared by Technical Committee CE
14、N/TC 185 “Fasteners”, 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 January 2017, and conflicting national standards shall be withdrawn at the latest by
15、January 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15048-2:2007. Compared to the previous versi
16、on, the modifications are the following: technical requirements and delivery conditions for bolting assemblies have been transferred from EN 15048-1; relevant product standards are specified by reference to a priority list, see 5.2; the use of complementary washers has been added; requirements for t
17、he test report have been revised. EN 15048 consists of the following parts, under the general title Non-preloaded structural bolting assemblies: Part 1: General requirements; Part 2: Fitness for purpose. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the f
18、ollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland
19、s, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 15048-2:2016EN 15048-2:2016 (E) 4 Introduction This European Standard specifies the requirements to ensure that non preloaded structural bolting assemblies (bolts + nuts) are fi
20、t for purpose in structural metallic works. Structural bolting assemblies which meet the requirements of this European Standard have been designed to allow tensile loading of at least fub As. Since the tensile resistance of bolting assemblies is very sensitive to differences in manufacture, it is im
21、portant that the bolting assemblies are supplied by one manufacturer who is always responsible for the function of the bolting assembly. For the same reason it is important that the coating of the bolting assemblies is under the control of the manufacturer. BS EN 15048-2:2016EN 15048-2:2016 (E) 5 1
22、Scope This European Standard specifies the technical requirements for structural bolting assemblies in order to ensure the suitability for non-preloaded bolted connections in steel structures or aluminium structures. A suitability test is specified to check the behaviour of the structural bolting as
23、semblies. It applies to bolting assemblies specified in EN 15048-1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references
24、, the latest edition of the referenced document (including any amendments) applies. EN 1993-1-8:2005, Eurocode 3: Design of steel structures Part 1-8: Design of joints EN 15048-1:2016, Non-preloaded structural bolting assemblies Part 1: General requirements EN 28839, Mechanical properties of fastene
25、rs Bolts, screws, studs and nuts made of non-ferrous metals (ISO 8839:1986) EN ISO 898-1, 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) EN ISO 898-2, Mechanical p
26、roperties 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) EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs (ISO 3506-1) EN ISO 3506-2, M
27、echanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts (ISO 3506-2) EN ISO 4014, Hexagon head bolts Product grades A and B (ISO 4014) EN ISO 4016, Hexagon head bolts Product grade C (ISO 4016) EN ISO 4017, Fasteners Hexagon head screws Product grades A and B (ISO 4017) EN
28、 ISO 4018, Hexagon head screws Product grade C (ISO 4018) EN ISO 4032, Hexagon regular nuts (style 1) Product grades A and B (ISO 4032) EN ISO 4033, Hexagon high nuts (style 2) Product grades A and B (ISO 4033) EN ISO 4034, Hexagon regular nuts (style 1) Product grade C (ISO 4034) EN ISO 6892-1, Met
29、allic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1) EN ISO 7500-1, Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring system (ISO 7500
30、-1) BS EN 15048-2:2016EN 15048-2:2016 (E) 6 ISO 273, Fasteners Clearance holes for bolts and screws 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15048-1 apply. 4 Symbols For the purposes of this document, the following symbols apply. As,nomnominal
31、stress area of the bolt, in mm2d nominal thread diameter, in mm Fbforce in the bolting assembly during the test, in N Fbi,maxindividual value of the maximum force reached by the assembly during the test, in N Fubtensile resistance, in N l bolt length, in mm Rm,minminimum tensile strength, in MPa NOT
32、E Asin accordance with EN 19931-8 means As,nomin accordance with this standard. 5 Technical requirements for bolting assemblies 5.1 Composition of structural bolting assemblies The performance of structural bolting assemblies depends on the properties of their specific components. Therefore, the ess
33、ential characteristics listed in EN 15048-1 are assessed through the verification of the properties of the involved components and/or bolting assemblies, as applicable. Other aspects dealing with marking and delivery conditions are assessed through inspection of the involved components and/or boltin
34、g assemblies, as applicable. 5.2 Product requirements Dimensions, tolerances on dimensions, form and position shall be in accordance with the relevant product standards. Components of structural bolting assemblies shall be selected by the manufacturer with the following priority order. a) General re
35、ference to published EN standards: For hexagon components, the following standards shall apply: 1) EN ISO 4014, EN ISO 4017, EN ISO 4032 and EN ISO 4033 for hexagon products of product grades A and B; 2) EN ISO 4016, EN ISO 4018 and EN ISO 4034 for hexagon products of product grade C; 3) when requir
36、ed, prevailing torque nuts in accordance with EN ISO 2320 and EN ISO 7040, ISO 7041, EN ISO 7042 or EN ISO 7719 may be used. BS EN 15048-2:2016EN 15048-2:2016 (E) 7 b) General reference to ETAs, c) General reference to published ISO standards, d) When none of these standards/ETAs exist, then referen
37、ce to national standards is permitted. Any suitable head shape, shank dimension, thread length, etc. may be used provided that all requirements of EN 15048-1 and EN 15048-2 are met. NOTE Additional requirements for design and/or execution are defined for instance in EN 19931-8, and EN 10902 for stee
38、l structures or EN 10903 for aluminium structures. If washers are specified for use with non-preloaded structural bolting assemblies, washers of product grade A or C can be combined with any product grade of bolting assemblies. Washers with a minimum hardness of 100 HV1)can be combined with any prop
39、erty class of bolting assemblies made of the same type (steel, alloy steel, stainless steel) of material. Washers made of carbon steel or alloy steel, a minimum hardness of 300 HV is required for property classes 8.8 and 10.9 in a single lap joint with only one bolt or single row of bolts, in accord
40、ance with EN 1993-1-8:2005, 3.6.1. 5.3 Manufacturing process 5.3.1 Material Free cutting steel shall not be used for the manufacture of bolts and nuts for structural bolting. 5.3.2 Nuts Hot dip galvanized nuts shall be galvanized before they are threaded. Nuts shall not be re-threaded after galvaniz
41、ing. 5.3.3 Bolts The manufacturing process for bolts of property class 10.9 shall take due care of the risk of hydrogen embrittlement, especially during the coating process. Appropriate processes shall be considered when the risk of hydrogen embrittlement cannot be avoided. 5.3.4 Finish and coating
42、Finish and coating, if applied, shall be as specified in the relevant coating standards. Coatings shall not impair the mechanical properties or the functional characteristics of the bolting assembly. Coating of all components of a bolting assembly shall be compatible and shall have equivalent corros
43、ion resistance. Coating of each component shall be under the control of the manufacturer of the bolting assemblies. 5.4 Marking 5.4.1 Bolts Bolts, screws or studs in accordance with this European Standard shall be marked with: the property class marking in accordance with EN ISO 898-1 for bolts manu
44、factured from carbon steel and alloy steel or EN ISO 3506-1 for bolts manufactured from stainless steel, and 1) No minimum hardness requirement exists for washers made of aluminium or aluminium alloy. BS EN 15048-2:2016EN 15048-2:2016 (E) 8 the grade marking in accordance with EN 28839 for bolts man
45、ufactured from aluminium or EN ISO 3506-1 for bolts manufactured from stainless steel, and the identification mark of the manufacturer of the bolting assemblies, and the special marking SB“ (for use in Structural Bolting). The marking may be either embossed or indented on the top surface of the head
46、 or on the end of studs and stud bolts. An example of bolt marking is shown in Figure 1. Key 1 identification mark of the manufacturer of the bolting assembly Figure 1 Example of bolt marking 5.4.2 Nuts Nuts in accordance with this European Standard shall be marked with: the grade marking in accorda
47、nce with EN 28839 for nuts manufactured from aluminium or aluminium alloy or EN ISO 3506-2 for nuts manufactured from stainless steel, and the property class marking in accordance with EN ISO 898-2 for nuts manufactured from carbon or alloy steel or EN ISO 3506-2 for nuts manufactured from stainless
48、 steel, and the identification mark of the manufacturer of the bolting assemblies, and the special marking SB“ (for use in Structural Bolting). The marking may be either indented or embossed on one of the bearing surfaces. An example of nut marking is shown in Figure 2. Key 1 identification mark of
49、the manufacturer of the bolting assembly Figure 2 Example of nut marking BS EN 15048-2:2016EN 15048-2:2016 (E) 9 5.4.3 Washers If washers are specified for use with non-preloaded structural bolting assemblies, marking of washers is not required. 5.5 Delivery conditions The manufacturer shall supply the bolting assemblies either in an original unopened single sealed container, or alternatively in original unopened separate sealed containers. The suitability for tensile loading of the bolting
