ISO-6931-1-1994.pdf
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1、INTERNATIONAL STANDARD ISO 69314 Second edition 1994-07-01 Stainless steels for springs - Part 1: Wire Aciers inoxydables pour ressorts - Partie 1: Fils Reference number ISO 6931-1:1994(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA T
2、echnical Standards 1/9972545001 Not for Resale, 04/22/2007 20:58:09 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 693%1:1994(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bedies)
3、. The work of preparing International Standards is normally carried out through ISO technical committees. Esch 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
4、-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 standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies
5、for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 6931-1 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 4, Heat treatable and alloy steels. This second edition cancels and rep
6、laces the first edition (ISO 6931-1:1989), which has been technically revised. ISO 6931 consists of the following Parts, under the general title Stainless steels for springs: - Part 1: Wire - Part 2: Strip Annex A of this part of ISO 6931 is for information only. 0 ISO 1994 All rights reserved. Unle
7、ss otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 ? CH-1 211 G
8、eneve 20 ? Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:58:09 MDTNo reproduction or networking permitted without license from IHS -,-,
9、- INTERNATIONAL STANDARD Q ISO ISO 6931-1:1994(EI Stainless steels for springs - Part 1: Wire 1 Scope 1.1 This part of ISO 6931 applies to the grades of wrought stainless steels listed in table 1, which are used in the work-hardened condition in the form of wire up to about 10 mm in diameter, for th
10、e pro- duction of springs and spring Parts that are exposed to corrosive effects and sometimes slightly increased temperatures (sec A.l in annex AI. 1.2 In addition to the steels listed in table 1, certain of the steel grades covered by ISO 683-13 are also used for springs, although to a much lesser
11、 extent. In these cases, the physical properties (tensile strength etc.) shall be agreed between user and supplier. 1.3 In addition to this part of ISO 6931, the general technical delivery requirements of ISO 404 are appli- cable. 2 Normative references The following Standards contain provisions whi
12、ch, through reference in this text, constitute provisions of this part of ISO 6931. 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 6931 are encouraged to investigate the possibility of applying
13、 the most recent editions of the Standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 377-1: 1989, Selection and preparation of samples and test pieces of wrought steels - Part 1: Samples and test pieces for mechanical test. ISO 377-2:
14、1989, Selection and preparation of samples and test pieces of wrought sreels - Part 2: Samples for the determination of the Chemical composition. ISO 404:1992, Steel and steel products - Genera/ technical delivery requirements. ISO 683-13:1986, Heat-treatable steels, a/oy steels and free-cutting ste
15、els - Part 13: Wrough t stainless steels. ISO 6892:1984, Metallic materials - Tensile festing. ISO 7802:1983, Metallic materials - Wire - Wrapping tesf. ISO/TR 9769: 1991, Steel and iron - Review of avail- able methods of analysis. ISO 10474:1991, Steel and sreel producfs - In- spection documen ts.
16、3 Ordering The purchaser shall state in his enquiry and Order a) the desired quantity; b) the wire diameter; c) the number of this part of ISO 6931 (ISO 6931-1); d) the steel grade (sec table 1); e) the delivery condition (sec 4.2.2.1 and 4.2.2.2); 1 Copyright International Organization for Standard
17、ization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:58:09 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6931-1:1994(E) f) the surface condition (see 4.2.2.3); g) the delivery form (sec 4.2.1); h)
18、the required type of document (sec 5.1 .l). EXAMPLE - - 4 2 t stainless spring wire, 2,00 mm, according to ISO 6931-1, steel grade 1, spring hard-drawn con- dition (C), normal strength (NS), coated, in coils. Inspection certificate 3.1.B according to ISO 10474, or 2 t stainless spring wire, 2,00 mm,
19、 ISO 6931-1, grade 1, condition C, strength NS, coated, coils, document 3.1 .B. Requirements 4.1 Manufacture of the steel and the product Unless otherwise agreed in the Order, the processes used in making the steel and the product are left to the discretion of the manufacturer. 4.2 Delivery 4.2.1 De
20、livery form Wire is usually supplied on spools, in coils or in tut lengths. Several coils may be assembled on a carrier. 0 ISO 4.2.2 Delivery condition 4.2.2.1 The condition in which the wire is to be de- livered shall always be specified by the purchaser. The possible delivery conditions are given
21、in table 2. The tempered condition (T) of grade 3 is not a stan- dard delivery condition but tan be agreed upon at the time of enquiry and Order. The tempering may Cause discoloration, see A.5.2.2. 4.2.2.2 Esch coil shall consist of one continuous length of wire, wound so that there are no kinks. Wi
22、re delivered on spools or on a carrier may consist of a maximum of two wire lengths agreed upon at the time of enquiry and Order. Wire from a spool shall be in a circular cast of diam- eter not less than the barrel diameter of the spool and not more than 2,5 times this. Wire in a coil shall be in a
23、circular cast of diameter not less than the original coil diameter and not more than 1,5 times this. Other diameters of circular casts tan be agreed upon at the time of enquiry and Order. Table 1 - Chemical composition of the steel (cast analysis) Chemical compositionl) Steel grade % Mn) Number Desi
24、gnation C Si Mn Al Cr Mo Ni max. max. max. 1 X9CrNi 18-8 0,12 1,5 2,0 - 16,0 to 19,0 - 6,5 to 9,5 2 X 5 CrNiMo 17-12-2 0.07 l,o 2,0 - 16.5 to 18,5 2,0 to 2,521 10,5to 13,5 3 X 7 CrNiAl 17-7 0,09 l,o l,o 0,75 to 1,50 16,0 to 18,0 - 6,5 to 7,531 1) For all grades G 0,045 90 (m/m) P and Q 0,030 % (m/m)
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