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1、BRITISH STANDARD BS EN ISO 2566-2:2001 Steel Conversion of elongation values Part 2: Austenitic steels The European Standard EN ISO 2566-2:1999 has the status of a British Standard ICS 77.040.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN ISO 2566-2:2001 This British
2、 Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 08-2001 ISBN 0 580 32679 9 National foreword This British Standard is the official English language ver
3、sion of EN ISO 2566-2:1999. It is identical with ISO 2566-2:1984. It supersedes BS 3894-2:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/4, Mechanical testing of metals, to Subcommittee ISE/NFE/4, Uniaxial testing of metals, which has th
4、e responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “Inter
5、national Standards Correspondence Index”, or by using the “Find” facility of 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
6、British Standard does not of itself confer immunity from legal obligations. 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 internationa
7、l and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, the ISO foreword page, pages 1 to 28, the annex ZA page and a back cover. The BSI copyright n
8、otice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2566-2 June 1999 ICS 77.040.00; 77.040.10 English version Steel - Conversion of elongation values - Part 2:
9、 Austenitic steels (ISO 2566-2:1984) Acier - Conversion des valeurs dallongement - Partie 2: Aciers austnitiques (ISO 2566-2:1984) Stahl - Umrechnung von Bruchdehnungswerten - Teil 2: Austenitische Sthle (ISO 2566-2:1984) This European Standard was approved by CEN on 25 April 1999. CEN members are b
10、ound 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
11、 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 statu
12、s as the official versions. CEN members are the national standards 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 STANDARD
13、IZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 1999 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2566-2:1999 E 2 egaP EN ISO 2566-2:1999 Foreword
14、 The text of the International Standard from Technical Committee ISO/TC 17 “Steel” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee ECISS/TC 1 “Steel testing”, the secretariat of which is held by AFNOR. This European Stand
15、ard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1999, and conflicting national standards shall be withdrawn at the latest by December 1999. According to the CEN/CENELEC Internal Regulations, the national st
16、andards organizations of the following countries are bound 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. Endorsem
17、ent notice The text of the International Standard ISO 2566-2:1984 has been approved by CEN as a European Standard without any modification. International Standard 2566/Z INTERNATIONAL ORGANIZATION FOR STANOAROIZATONWIIEMYHAPOHAR OPfAHM3AL proportional gauge lengths of k Gare also used for flat and r
18、ound test pieces, where k may be one of a number of values, i.e. 4; 5,65; 8,16; and 11,3. The value 5,651/S0 is adopted as the internationally preferred proportional gauge length. Arising from this choice and the existence of specifications stipulating minimum percentage elongations on different gau
19、ge lengths, a growing need has been evident for an International Standard which could be used to convert test results into values based on the different gauge lengths. This part of IS0 2566 accordingly includes tables of conversion factors, tables of actual conversions for some of the most commonly
20、used gauge lengths and elongation values, and figures which may also be used for such conversions. When using these con- versions, however, note should be taken of the limitations on their applicability as stated in clause 1. While, as indicated, the conversions are considered to be reliable within
21、the stated limitations, because of the various fac- tors influencing the determination of percentage elongations, they shall be used for acceptance purposes only by agreement between the customer and supplier. In cases of dispute, the elongation shall be determined on the gauge length stated in the
22、relevant specification. 1 Scope and field of application This part of IS0 2566 specifies a method of converting room temperature percentage elongations after fracture obtained on various proportional and non-proportional gauge lengths to other gauge lengths. The formula (see clause 4) on which conve
23、rsions are based is considered to be reliable when applied to austenitic stainless steels within the tensile strength range 450 to 750 N/mm2 and in the solution treated condition. These conversions are not applicable to a) cold reduced steels; b) quenched and tempered steels; c) non-austenitic steel
24、s. Neither should they be used where the gauge length exceeds 25a or where the width to thickness ratio of the test piece exceeds 20. Care should be exercised in the case of strip under 3 mm thickness, as the index in the formula given in clause 4 in- creases with decreasing thickness; the value to
25、be used shall be the subject of agreement between the customer and the supplier. 2 Symbols In this part of IS0 2566, the symbols shown in table 1 are used. Table 1 - List of symbols Symbol Description A Percentage elongation on gauge length, L, after fracture, obtained on test 4 Percentage elongatio
26、n on a different gauge length, required by conversion d Diameter of test piece LO Original gauge length SO Original cross-sectional area of test piece 3 Definitions For the purpose of this part of IS0 2566, the following defini- tions apply : 3.1 gauge length : Any length of the parallel portion of
27、the test piece used for measurement of strain. The term is hereafter used in this part of IS0 2566 to denote the original gauge length, L, marked on the test piece for the determination of percentage elongation after fracture, A. 1 9991:26652 OSI NE 3 EN ISO 25662:1999 1 0si 4891-2/6652 lE( 32 q pro
28、portional gauge length: A gauge length having a onwersion from a pro specified relation to the square root of the cross-sectional area, for example 5,65fi. th to a non-proportion The conversion factors are variable according to the cross- sectional area of the non-proportional test piece. Table 4 gi
29、ves the multiplying factors for conversion from elongation on 5,656 to the equivalent on fixed gauge lengths of 50,80, 100 and 200 mm for a range of cross-sectional areas. For conver- sions in the reverse direction, i.e. elongation on a fixed gauge length to the equivalent of 5,65 Tables 7 to 10 can
30、 be used to obtain some of these conver- sions, whilst tables 15 to 18 can be used to obtain elongations on fixed gauge leng ths corresponding to 5,656. A is the elongation on a gauge length of 5,65dSo which is the internationally accepted gauge length; So and Lo are defined in table 1. Similarly, t
31、ables 11 to and tables 19 to 22 for responding to 4 6 14 can be used for conversion to4JS, elongations on fixed gauge len gths cor- Expressed in terms of 42/S, the formula becomes 8 Conversion from a non-proportional gauge length to another non-proportional gauge length for test pieces of different
32、cross- sectional areas where A is the elongation on a gauge length of 4a/Se. Tables 2 to 22 and figures 1 to 5 have been prepared on the basis of the above formulae. It is preferable for this calculation to be made in two stages with an initial conversion to 5,656. 5 Conversion from one proportional
33、 gauge length to another proportional gauge length Example: Simple multiplying factors based on the formula are used for such conversions, and the relationships between a number of the more widely used proportional gauge lengths are given in table 2. Detailed conversions of elongations obtained on 4
34、 b) read graphically the coefficient j11.2 = (Kl/K2)o127; I c) the elongation obtained is A2 = ill., x A,. I Example: Elongation of 24 % on 200 mm for a 40 mm x 15 mm test piece in terms of equivalent on a 30 mm x 10 mm test piece with a gauge length equal to 100 mm. 4 200 - = a) K1 = 00 = 8,16 K2=-
35、=-= iK2/ = 4.2 x Al I b) From figure 5, Al.2 = 1,04. , c) Elongation required is 24 x 1,04 = 25,0 %. Table 2 - Conversion factors : Proportional gauge lengths Conversion from : 46 565 6 83Jq II,36 4d 5d 8d 4JI ! Figure 5 - Conversions of elongation values 82 9991:26652 OSI NE 03 EN ISO 25662:1999 28
36、 gaPe 3 EN ISO 1567:2000 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate pl
37、aces 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. For undated references the latest edition of the publication ref
38、erred to applies (including amendments). NOTE Where an International Publication has been modified by common modifications, indicated by (mod.), the relevant EN/HD applies. PublicationYearTitleEN/HDYear ISO/DIS 4631996Geometrical product specifications (GPS) Dimensional measuring instruments: Dial g
39、auges - Design and metrological requirements prEN 4631996 ISO 1942-11989Dental vocabulary - Part 1: General and clinical termsEN 21942-11991 ISO 1942-21989Dental vocabulary - Part 2: Dental materialsEN 21942-21992 ISO 1942-51989Dental vocabulary - Part 5: Terms associated with testing EN ISO 1942-51
40、994 ISO 33361993Dentistry - Synthetic polymer teethEN ISO 33361996 ISO 36961987Water for analytical laboratory use - Specification and test methods EN ISO 36961995 ISO 74911985Dental materials - Determination of colour stability of dental polymeric materials EN 274911991 ISO 86011988Data elements an
41、d interchange formats - Information interchange - Representation of dates and times EN 286011992 EN ISO 25662:1999 32 9991:26652 OSI NE 13 EN ISO 25662:1999 29 BS EN ISO 2566-2:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body respon
42、sible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendm
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