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1、BRITISH STANDARD BS EN ISO 3506-3:1998 Mechanical properties of corrosion-resistant stainless-steel fasteners Part 3: Set screws and similar fasteners not under tensile stress The European Standard EN ISO 3506-3:1997 has the status of a British Standard ICS 21.060.10 Licensed Copy: sheffieldun sheff
2、ieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 3506-3:1998 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 February 1998 BSI 05-
3、1999 ISBN 0 580 29087 5 National foreword This British Standard is the English language version of EN ISO 3506-3:1997. It is identical with ISO 3506-3:1997. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/1, Mecha
4、nical properties of fasteners, which has the responsibility to: aid enquirers to understand 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 Europe
5、an developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to internatio
6、nal publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility o
7、f the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
8、 Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporat
9、ed. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 3506-3:1998 BSI 05-1999i Contents Page National f
10、orewordInside front cover Foreword2 Forewordii Text of ISO 3506-31 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN S
11、TANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3506-3 December 1997 ICS 21.060.10 Descriptors: See ISO document English version Mechanical properties of corrosion-resistant stainless-steel fasteners Part 3: Set screws and similar fasteners not under tensile stress (ISO 3506-3:1997) Caractristiques m
12、caniques des lments de fixation en acier inoxydable rsistant la corrosion Partie 3: Vis sans tte et lments de fixation similaires non soumis des contraintes de traction (ISO 3506-3:1997) Mechanische Eigenschaften von Verbindungselementen aus nichtrostenden Sthlen Teil 3: Gewindestifte und hnliche, n
13、icht auf Zug beanspruchte Schrauben (ISO 3506-3:1997) This European Standard was approved by CEN on 23 October 1997. 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 an
14、y 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
15、 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ire
16、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation
17、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3506-3:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 3506-3:1997 BSI 05-1999 2 Foreword The text of the International Standard ISO 350
18、6-3:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standa
19、rd, either by publication of an identical text or by endorsement, at the latest by June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound
20、 to implement 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. Endorsement notice The text of the International Standard ISO 3506
21、-3:1997 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword2 Introduction1 1Scope1 2Normative references1 3Designation, marking and finish2 4Chemical composition3 5Mechanic
22、al properties3 6Test methods4 Annex A (informative) Description of the groups and grades of stainless steels6 Annex B (informative) Austenitic stainless steel composition specifications8 Annex C (informative) Austenitic stainless steels for cold heading and extruding9 Annex D (informative) Time-temp
23、erature-diagram of intergranular corrosion in austenitic stainless steels, grade A2 (18/8 steels)10 Annex E (informative) Magnetic properties for austenitic stainless steels10 Annex F (informative) BibliographyInside back cover Annex ZA (normative) Normative references to international publications
24、with their relevant European publicationsInside back cover Figure 1 Designation system for stainless steel grades and property classes for set screws and similar fasteners2 Figure 2 Torque test equipment5 Figure D.110 Table 1 Designations of property classes in relation to Vickers hardness2 Table 2
25、Stainless steel grades Chemical composition3 Table 3 Proof torque requirements4 Table 4 Hardness4 Table A.1 Ferritic-austenitic steels Chemical composition7 Table B.18 Table C.19 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy:
26、 sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 3506-3:1997 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internati
27、onal Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IS
28、O, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Int
29、ernational Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 3506-3 was prepared by Technical Committee ISO/TC 2, Fasteners, Sub-Committee SC 1, Mechanical properties of fasteners. This first edition, together with ISO 3506-1 and ISO 3506-2,
30、cancels and replaces ISO 3506:1979, which has been technically revised. ISO 3506 consists of the following parts, under 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 no
31、t under tensile stress. Annex A to Annex F of this part of ISO 3506 are for information only. Descriptors: Steel products, corrosion resistant steels, stainless steels, fasteners, set screws, specifications, materials specifications, mechanical properties, chemical composition, tests, mechanical tes
32、ts, test equipment, designation, marking. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 3506-3:1997 BSI 05-19991 Introduction In the preparation of this part of ISO 3506 special attention has been given to the fundamentally differen
33、t property characteristics of the stainless steel fastener grades compared with those of carbon steel and low-alloy steel fasteners. Austenitic stainless steels are strengthened only by cold working and consequently the components do not have as homogeneous a condition as hardened and tempered parts
34、. These special features have been recognized in the elaboration of the property classes and the test procedures for mechanical properties. 1 Scope This part of ISO 3506 specifies the mechanical properties of set screws and similar fasteners not under tensile stress made of austenitic stainless stee
35、l when tested over an ambient temperature range of 15 C to 25 C. Properties will vary at higher or lower temperatures. It applies to set screws and similar fasteners with nominal thread diameters (d) from 1,6 mm up to and including 24 mm; of triangular ISO metric threads with diameters and pitches a
36、ccording to ISO 68-1, ISO 261 and ISO 262; of any shape. It does not apply to screws with special properties such as weldability. This part of ISO 3506 does not define corrosion or oxidation resistance in particular environments. The aim of this part of ISO 3506 is a classification into property cla
37、sses of corrosion resistant stainless steel fasteners. Corrosion and oxidation performances and mechanical properties for use at elevated or sub-zero temperatures must be the subject of agreement between user and manufacturer in each particular case. Annex D shows how the risk of intergranular corro
38、sion at elevated temperatures depends on the carbon content. All austenitic stainless steel fasteners are normally non-magnetic in the annealed condtition; after cold working, some magnetic properties may be evident (see Annex E). 2 Normative references The following standards contain provisions whi
39、ch, through reference in this text, constitute provisions of this part of ISO 3506. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 3506 are encouraged to investigate the possibility of applying
40、 the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 68-1:, ISO general purpose screw threads Basic profile Part 1: Metric screw threads1). ISO 261:, ISO general purpose metric screw threads General plan
41、2). ISO 262:, ISO general purpose metric screw threads Selected sizes for screws, bolts and nuts3). ISO 898-5:, Mechanical properties of fasteners Part 5: Set screws and similar threaded fasteners not under tensile stresses4). ISO 965-3:, ISO general-purpose metric screw threads Tolerances Part 3: D
42、eviations for constructional threads5). ISO 3651-1:, Determination of resistance to intergranular corrosion stainless steels Part 1: Austenitic and ferritic-austenitic (duplex) stainless steels Corrosion test in nitric acid medium by measurement of loss in mass (Huey test)5). ISO 3651-2:, Determinat
43、ion of resistance to intergranular corrosion stainless steels Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels Corrosion test in media containing sulfuric acid6). ISO 6506:1981, Metallic materials Hardness test Brinell test. ISO 6507-1:1997, Metallic materials Hardness
44、test Vickers test Part 1: Test method. ISO 6508:1986, Metallic materials Hardness test Rockwell test (scales A B C D E F G H K). 1) To be published. (Revision of ISO 68:1973) 2) To be published. (Revision of ISO 261:1973) 3) To be published. (Revision of ISO 262:1973) 4) To be published. (Revision o
45、f ISO 898-5:1980) 5) To be published. (Revision of ISO 965-3:1980) 6) To be published. (Revision of ISO 3651-1:1976) Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 3506-3:1997 2 BSI 05-1999 3 Designation, marking and finish 3.1 Desig
46、nation The designation system for stainless steel grades and property classes for set screws and similar fasteners is shown in Figure 1. The designation of the material consists of two blocks which are separated by a hyphen. The first block designates the steel grade, the second block the property c
47、lass. The designation of the steel grade (first block) consists of the letter A for austenitic steel which indicates the group of steel and a digit which indicates a range of chemical compositions within this steel group. The designation of the property class (second block) consists of two digits re
48、presenting 1/10 of the minimum Vickers hardness and the letter H referring to hardness, see Table 1. Table 1 Designations of property classes in relation to Vickers hardness EXAMPLE: A1-12H indicates: austenitic stainless steel, soft, minimum hardness 125 HV. 3.2 Marking 3.2.1 Set screws Marking of
49、set screws is not mandatory. Only if all requirements in this part of ISO 3506 are met, parts shall be marked and/or described according to the designation system described in 3.1. 3.2.2 Packages and containers Marking with the designation and manufacturers identification mark is mandatory on all packages of all sizes. 3.3 Finish Unless otherwise specified, fasteners in accordance with this part of ISO 3506 shall be supplied clean and bright. For maximum