BS EN ISO 3506-1-2009 Mechanical properties of corrosion-resistant stainless steel fasteners - Bolts screws and studs《耐腐蚀不锈钢紧固件的机械特性 螺栓、螺钉和螺柱》.pdf

1、BS EN ISO3506-1:2009ICS 21.060.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMechanical propertiesof corrosion-resistantstainless steelfastenersPart 1: Bolts, screws and studsThis British Standardwas published under theauthority of the StandardsPolicy and St

2、rategyCommittee on 31 December2009. BSI 2009ISBN 978 0 580 58916 4Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 3506-1:2009National forewordThis British Standard is the UK implementation of EN ISO 3506-1:2009.It supersedes BS EN ISO 3506-1:1998 which is withdrawn.The UK partic

3、ipation in its preparation was entrusted to TechnicalCommittee FME/9/1, Mechanical properties of fasteners.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users ar

4、e responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3506-1 November 2009 ICS 21.060.10 Supersedes EN ISO 3506-1:1997English Version Mechanical properties of corrosion-resist

5、ant stainless steel fasteners - Part 1: Bolts, screws and studs (ISO 3506-1:2009) Caractristiques mcaniques des lments de fixation en acier inoxydable rsistant la corrosion - Partie 1: Vis et goujons (ISO 3506-1:2009) Mechanische Eigenschaften von Verbindungselementen aus nichtrostenden Sthlen - Tei

6、l 1: Schrauben (ISO 3506-1:2009) This European Standard was approved by CEN on 24 October 2009. 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-d

7、ate lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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

8、the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hu

9、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Cen

10、tre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3506-1:2009: EBS EN ISO 3506-1:2009EN ISO 3506-1:2009 (E) 3 Foreword This document (EN ISO 3506-1:2009) has been prepared by Technical

11、Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners”, 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 May 2010,

12、and conflicting national standards shall be withdrawn at the latest by May 2010. 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

13、document supersedes EN ISO 3506-1:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gr

14、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 3506-1:2009 has been approved by CEN as a EN ISO 3506-1:2009 without

15、 any modification. BS EN ISO 3506-1:2009ISO 3506-1:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references2 3 Symbols2 4 Designation, marking and finish3 4.1 Designation 3 4.2 Marking.4 4.3 Finish 6 5 Chemical composition 6 6 Mechanical proper

16、ties.7 7 Testing9 7.1 Test programme 9 7.2 Test methods .10 Annex A (normative) External thread Calculation of stress area .14 Annex B (informative) Description of the groups and grades of stainless steels .15 Annex C (informative) Stainless steel composition specifications .18 Annex D (informative)

17、 Stainless steels for cold heading and extruding.21 Annex E (informative) Austenitic stainless steels with particular resistance to chloride induced stress corrosion 23 Annex F (informative) Mechanical properties at elevated temperatures; application at low temperatures24 Annex G (informative) Time-

18、temperature diagram of intergranular corrosion in austenitic stainless steels, grade A2 (18/8 steels).25 Annex H (informative) Magnetic properties for austenitic stainless steels 26 Bibliography27 BS EN ISO 3506-1:2009ISO 3506-1:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International

19、Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been esta

20、blished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardiza

21、tion. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for votin

22、g. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such

23、patent rights. ISO 3506-1 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 1, Mechanical properties of fasteners. This second edition cancels and replaces the first edition (ISO 3506-1:1997), which has been technically revised. ISO 3506 consists of the following parts, under

24、the general title Mechanical properties of corrosion-resistant stainless steel fasteners: Part 1: Bolts, screws and studs Part 2: Nuts Part 3: Set screws and similar fasteners not under tensile stress Part 4: Tapping screws BS EN ISO 3506-1:2009ISO 3506-1:2009(E) ISO 2009 All rights reserved vIntrod

25、uction In the preparation of this part of ISO 3506, special attention has been given to the fundamentally different property characteristics of the stainless steel fastener grades compared with those of carbon steel and low-alloy steel fasteners. Ferritic and austenitic stainless steels are strength

26、ened only by cold working and consequently, the components do not have as homogeneous local material properties as hardened and tempered parts. These special features have been recognized in the elaboration of the property classes and the test procedures for mechanical properties. The latter differ

27、from the carbon steel and low-alloy steel fastener test procedures with regard to the measurement of the stress at 0,2 % permanent strain (yield stress) and ductility (total elongation after fracture). BS EN ISO 3506-1:2009BS EN ISO 3506-1:2009INTERNATIONAL STANDARD ISO 3506-1:2009(E) ISO 2009 All r

28、ights reserved 1Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs 1 Scope This part of ISO 3506 specifies the mechanical properties of bolts, screws and studs made of austenitic, martensitic and ferritic steel grades of corrosion-resistant stainle

29、ss steels, when tested over an ambient temperature range of 10 C to 35 C. Properties vary at higher or lower temperatures. This part of ISO 3506 applies to bolts, screws and studs with nominal thread diameter d u 39 mm, of triangular ISO metric threads with diameters and pitches in accordance with I

30、SO 68-1, ISO 261 and ISO 262, and of any shape. It does not apply to screws with special properties, such as weldability. NOTE The designation system of this part of ISO 3506 can be used for sizes outside the limits given in this clause (e.g. d 39 mm), provided that all applicable mechanical and phy

31、sical requirements of the property classes are met. This part of ISO 3506 does not define corrosion or oxidation resistance in particular environments. However, some information on materials for particular environments is given in Annex E. Regarding definitions of corrosion and corrosion resistance,

32、 see ISO 8044. The aim of this part of ISO 3506 is the classification of corrosion-resistant stainless steel fasteners1)into property classes. Some materials can be used at temperatures down to 200 C, while some can be used at temperatures up to + 800 C in air. Information on the influence of temper

33、ature on mechanical properties is found in Annex F. Corrosion and oxidation performances and mechanical properties for use at elevated or sub-zero temperatures can be agreed on between the user and the manufacturer in each particular case. Annex G shows how the risk of intergranular corrosion at ele

34、vated temperatures depends on the carbon content. All austenitic stainless steel fasteners are normally non-magnetic in the annealed condition; after cold working, some magnetic properties can be evident (see Annex H). 1) The term “fasteners” is used when bolts, screws and studs are considered all t

35、ogether. BS EN ISO 3506-1:2009ISO 3506-1:2009(E) 2 ISO 2009 All rights reserved2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the ref

36、erenced document (including any amendments) applies. ISO 68-1, ISO general purpose screw threads Basic profile Part 1: Metric screw threads ISO 261, ISO general purpose metric screw threads General plan ISO 262, ISO general purpose metric screw threads Selected sizes for screws, bolts and nuts ISO 8

37、98-1, 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 3651-1, Determination of resistance to intergranular corrosion of stainless steels Part 1: Austenitic and ferritic-aus

38、tenitic (duplex) stainless steels Corrosion test in nitric acid medium by measurement of loss in mass (Huey test) ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels Corrosion test in me

39、dia containing sulfuric acid ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 6892-1

40、, Metallic materials Tensile testing Part 1: Method of test at room temperature ISO 16048, Passivation of corrosion-resistant stainless-steel fasteners ISO 16426, Fasteners Quality assurance system 3 Symbols A elongation after fracture As,nomnominal stress area d nominal thread diameter d1basic mino

41、r diameter of external thread d2basic pitch diameter of external thread d3minor diameter of external thread (for stress calculation) H height of the fundamental triangle of the thread L1total length of fastener L2total length of fastener after fracture L3distance between the underside of the head an

42、d the threaded adapter l nominal length of the fastener lsplain shank length BS EN ISO 3506-1:2009ISO 3506-1:2009(E) ISO 2009 All rights reserved 3MBbreaking torque P pitch of the thread ReLlower yield stress Rmtensile strength Rp0,2stress at 0,2 % permanent strain wedge angle rpermeability value in

43、 a magnetic field 4 Designation, marking and finish 4.1 Designation The designation system for stainless steel grades and property classes for bolts, screws and studs is given in Figure 1. The designation of the material consists of two blocks, which are separated by a hyphen. The first block design

44、ates the steel grade and the second block, the property class. The designation of the steel grade (first block) consists of one of the letters A for austenitic steel, C for martensitic steel, or F for ferritic steel which indicates the group of steel and a digit, which indicates a range of chemical

45、compositions within this steel group (see Table 1). The designation of the property class (second block) consists of two or three digits representing 1/10 of the tensile strength of the fastener, according to Table 2 or Table 3. EXAMPLE 1 A2-70 indicates: austenitic steel, cold worked, minimum 700 M

46、Pa tensile strength. EXAMPLE 2 C4-70 indicates: martensitic steel, hardened and tempered, minimum 700 MPa tensile strength. BS EN ISO 3506-1:2009ISO 3506-1:2009(E) 4 ISO 2009 All rights reservedaThe steel groups and steel grades classified in Figure 1 are described in Annex B and specified by the ch

47、emical composition given in Table 1. bLow-carbon austenitic stainless steels with carbon content not exceeding 0,03 % may additionally be marked with an “L”. EXAMPLE A4L-80 cFasteners passivated in accordance with ISO 16048 may additionally be marked with a “P”. EXAMPLE A4-80P Figure 1 Designation s

48、ystem for stainless steel grades and property classes for bolts, screws and studs 4.2 Marking 4.2.1 General Fasteners manufactured according to the requirements of this part of ISO 3506 shall be designated in accordance with the designation system described in 4.1 and marked in accordance with 4.2.2

49、 and 4.2.3 or 4.2.4, as applicable. However, the designation system described in 4.1 and the provisions for marking according to 4.2.3 or 4.2.4 shall be used only if all relevant requirements of this part of ISO 3506 are met. Unless otherwise specified in the product standard, the height of embossed markings on the top of the head shall not be included in the head height dimensions. NOTE For marking of left-hand threads, see ISO 898-1. 4.2.2 Manufacturers identification mar