ISO 9723-1992 Nickel and nickel alloy bars《镍和镍合金棒材》.pdf
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1、INTERNATIONAL STANDARD IS0 9723 First edition 1992-12-01 Nickel and nickel alloy bars Barres en nickel ef alliages de nickel Reference number IS0 9723:1992(E) Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking pe
2、rmitted without license from IHS-,-,-IS0 9723:1992(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees.
3、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, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the Intern
4、ational 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 Inter- national Standard requires approval by at least 75% of the member b
5、odies casting a vote. International Standard IS0 9723 was prepared by Technical Committee ISO/TC 155, Nickel and nickel alloys, Sub-Committee SC 2, Wrought and cast nickel and nickel alloys. Annex A forms an integral part of this International Standard. 0 IS0 1992 All rights reserved. No part of thi
6、s publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switz
7、erland ii Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,- INTERNATIONAL STANDARD Iso 9723:1992(E) Nickel and nickel alloy bars 1 Scope This International Standard specif
8、ies requirements for nickel and nickel alloy bars in the finished con- dition and for further working in the following size ranges: - cold-worked bars up to and including 65 mm di- ameter or width across flats - hot-worked bars up to and including 315 mm di- ameter or width across flats. 2 Normative
9、 references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All stan- dards are subject to revision, and parties to agreements based on this Intern
10、ational Standard are encouraged to investigate the possibility of ap- plying the most recent editions of the standards in- dicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. ISO/R 204:1961, Non-interrupted creep testing of steel at elevated temperatu
11、res. ISO/R 206:1961, Creep stress rupture festing of steel at elevated temperatures. IS0 6372-1:1989, Nickel and nickel alloys - Terms and definitions - Part 1: Materials. IS0 6372-3:1989, Nickel and nickel alloys - Terms and definitions - Part 3: Wrought products and castings. IS0 6892:1984, Metall
12、ic materials - Tensile testing. IS0 7003:1990, Unified format for the designation of metals. ISO/TR 9721:1992, Nickel and nickel alloys - Rules for material description based on chemical symbols. IS0 9722:1992, Nickel and nickel alloys - Composi- tion and forms of wrought products. ASTM E 112:1988,
13、Standard methods for determining average grain size. 3 Definitions For the purposes of this International Standard, the following definitions and those for nickel and nickel alloys in IS0 6372-l and for bars in IS0 6372-3 apply. 3.1 heat: The product of a furnace melt or a number of melts that are m
14、ixed prior to casting. 3.2 lot: Bars of the same cross-sectional dimen- sions, from the same heat, heat treated together or sequentially heat treated in a continuous furnace, but in no case for longer than 16 h of production. For bars not identified by heat, the lot shall be either one piece of the
15、forging or 500 kg, whichever is larger. 4 Alloy identification For the purposes of this International Standard, the principles for alloy identification in ISO/TR 7003 and ISO/TR 9721 apply. 5 Ordering information Orders for bars according to this International Stan- dard shall include the following
16、information. 5.1 The number of this International Standard. 5.2 Quantity (mass or number of bars). 5.3 Alloy identification (see table 1). NOTE 1 For alloy identification, either the number or the description may be used. 5.4 Alloy temper, for finished bars only (see table 2). 1 Copyright Internatio
17、nal Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 9723:1992(E) 5.5 Dimensions: diameter, width across flats, thickness, width, length. 5.6 Specify whether the purchaser will hot work the p
18、roduct. 5.7 Optional requirements: a) b) cl 4 e) 9 9) 6 tolerances for bars to be hot worked by the pur- chaser; samples for product analysis (see 7.1.2); determination of 1 % proof stress (see 9.2.3); surface condition (see 6.1.8 or 6.2.4); marking (see clause 10); purchaser or third party inspecti
19、on (see clause 11); declaration of conformity (see clause 12). Requirements 6.1 Requirements for bars supplied in a finished condition 6.1 .I Composition Heat analysis shall meet the composition limits specified in table 1. The composition limits do not preclude the possible presence of other elemen
20、ts that are not specified. If the purchasers requirements necessitate limits for any other element that is not specified, these shall be agreed between the purchaser and the supplier. The percentage content of elements shown as “re- mainder” shall be calculated by difference from 100 %. 6.1.2 Temper
21、 Unless otherwise specified, bars of precipitation- hardenable alloys shall be supplied in the solution- treated temper. 6.1.3 Tensile properties Bars shall have the tensile properties specified in table 2. 6.1.4 Heat treatment Precipitation-hardenable alloy bars shall be heat treated in accordance
22、with table3 to the condition as ordered. 6.1.5 Grain size Bars of alloys NW8810 (FeNi32Cr21AITi-HC) and NW8811 (FeNi32Cr21AITi-HT) shall have a grain size ASTM No. 5 or coarser (average diameter 0,06 mm or greater). 6.1.6 Creep or stress rupture properties Bars of precipitation-hardenable alloys sha
23、ll meet the creep or stress rupture properties specified in table 4. 6.1.7 Dimensional tolerances 6.1.7.1 Diameter, thickness or width across flats The tolerances for cross-sectional dimensions shall be as specified in tables 5 to 7. 6.1.7.2 Length The length tolerance of hot-worked and cold-worked
24、bars shall be as specified in table b) cold drawn; c) descaled; d) machined; e) ground. 6.2 Requirements for bars to be further worked by the purchaser 6.2.1 Composition Heat analysis shall meet the composition limits specified in table 1, as in IS0 9722. The composition limits do not preclude the p
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