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

25、ossible presence of other elements 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 dif

26、ference from 100 %. 6.2.2 Temper Unless otherwise specified, bars to be further worked by the purchaser shall be supplied in the hot-worked temper, without specified mechanical properties. 6.2.3 Precipitation-hardenable alloys The supplier of precipitation-hardenable alloy bars shall demonstrate the

27、 capability of meeting the re- quirements specified in table2 and/or table4, by testing samples heat treated in accordance with ta- ble 3. 6.2.4 Surface condition Bars shall be clean and face inperfections. free from detrimental sur- Unless otherwise agreed between the purchaser and the supplier, ba

28、rs shall be supplied with a ma- chined surface. NOTE 3 Where appropriate, the acceptance criteria should be agreed between the purchaser and the supplier. 7.1 Chemical analysis - 7.1.1 Representative heat analysis samples shall be taken during pouring or subsequent processing. 7.1.2 Product analysis

29、 samples shall be taken from the finished product. 7.2 Tensile and creep or stress rupture test Tensile and creep or stress rupture test samples shall be taken from material in the final heat-treated condition and tested in the longitudinal direction. Samples from products to be supplied in other th

30、an the fully heat-treated condition shall be heat treated in accordance with table3 before testing. 8 Number of tests 8.1 Chemical analysis, one test per heat. 8.2 Tensile test, one test per lot. 8.3 Creep or stress rupture test, one test per lot. 8.4 Grain size determination, one test per lot. 9 Te

31、st procedures 9.1 Chemical analysis 9.1.1 The method of chemical analysis shall be at the option of the supplier, however, in cases of dis- pute the method specified in the relevant Inter- national Standard shall be used. If no International Standard exists, an analytical method that can be calibrat

32、ed to a reference stan- dard agreed upon by the purchaser and the supplier shall be used. 9.1.2 For a list of IS0 analytical standards, see an- nex A. 9.2 Tensile testing 9.2.1 Testing shall be carried out in accordance with IS0 6892. 9.2.2 Bars shall be tested over their total cross- section, if po

33、ssible. When a test over the total cross-section cannot be performed, the largest possible round specimen, not exceeding 15 mm in diameter on the gauge length, shall be used. 3 , Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduct

34、ion or networking permitted without license from IHS-,-,-IS0 9723:1992(E) Longitudinal strip specimens shall be prepared for rectangular bars, with thicknesses up to and includ- ing 15 mm, which are too wide to be tested in full cross-section. See annexes C and D of IS0 6692. 9.2.3 The offset method

35、 shall be used for the de- termination of proof stress. An offset of 0,2 % (I?,) shall be standard. However, a 1 % proof stress (I?, J shall be determined and reported for infor- mation when requested by the purchaser. 9.3 Creep and stress rupture testing 9.6 Retests If any one of the test pieces fi

36、rst selected fails to pass the specified tests, two further samples from the same lot shall be selected for testing, one of which shall be from the original bar tested, unless that bar has been withdrawn by the supplier. If the test pieces from both these additional samples pass, the lot represented

37、 by the test samples shall be deemed to comply with the requirements of this International Standard. If the test pieces from either of these additional samples fail, the lot represented by these samples shall be deemed not to comply with the requirements of this International Standard. 9.3.1 Creep t

38、ests shall be carried out in accord- ante with ISO/R 204, except that only the final total 10 Marking plastic strain need be reported. 10.1 Each bundle or shiaoina container shall be 9.3.2 Stress rupture tests shall be carried out in accordance with ISO/R 206. 9.4 Grain size determination A transver

39、se sample representative of the full thick- ness shall be examined in accordance with ASTM E 112. 9.5 Rounding-off For the purpose of determining compliance with the specified limits of the properties listed below, an observed value or a calculated value shall be rounded as follows. marked with the

40、number of this International Stan- dard, the alloy identification (either the number or the description), the heat number, heat-treated con- dition, the. size; the gross, tare and net weight, the consignor and consignee address, contract or order number, and any other information requested in the co

41、ntract or order. 10.2 If agreed between the purchaser and supplier, the supplier shall mark each bar with the number of this International Standard, the alloy identifica- tion, the heat number and the manufacturers name. The method of marking will be at the option of the supplier, unless otherwise a

42、greed. Marking shall not result in harmful contamination. When the figure irnmediately after the last figure to be retained is lower than 5, the last figure to be retained remains unchanged. 11 Purchaser or third party inspection On-site inspection of bars by the purchaser or third parties shall be

43、in accordance with agreements made between the purchaser and the supplier as part of the purchase contract. When the figure immediately after the last figure to be retained is 5 or greater, the last figure to be retained is increased by one. Composition, creep, Nearest unit to the last 12 Declaratio

44、n of conformity stress rupture, grain right-hand place of fig- size, hardness and di- ures of the specified When requested by the purchaser in the contract or mensions limit order. the supplier shall certify that the bars were Tensile strength (Io 21,0 0,2 l-5 1.0 0,015 1,0 2,7 Bi: 0,0001(l) Pb: 0.0

45、020(20) NW4400 NiCu30 28,0 63.0 83 0,30 34,0 2,5 zo 0,025 0.5 NW4402 NiCu30-LC 28,0 630 however, the specified minimum elongation has to be met. 11 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted wit

46、hout license from IHS-,-,-IS0 9723:1992(E) Table 5 - Tolerances for cold-worked bars (including cold-worked, heat-treated and descaled bars) Values in millimetres Specified dimensionl) Tolerance Cross-section over up to and including IO -to,03 -0,08 ?ound 10 25 +0.03 -0,il 25 65 to.05 -0,13 square i

47、exagon iectangle 10 +0,03 -0,08 1) The following dimensions and tolerances apply. a) Round bars: diameter. The circularity tolerance is half the total diameter toler- ance and shall be within the diameter tolerance. b) Square and hexagonal bars: width across flats. c) Rectangular bars: thickness and

48、 width. Table 6 - Tolerances for hot-worked bars (including hot-worked, heat-treated and descaled bars) Dimensions in millimetres Specified dimensionsl) Hot rolled over up to and including 25 f 075 25 50 f W3 50 100 f 133 100 150 f 183 150 (315) 1) The followlng dimensions and tolerances apply. a) R

49、ound bars: diameter. The circularity tolerance for bars Tolerancel) Forged up to and including 3 500 mm in length over 3 500 mm in length f 039 f 296 f I,1 * 2,9 f 137 f 376 f 2,3 f 4-6 f 4,2 *7 - up to and including 15 mm is the total diameter tolerance; - over 15 mm is half the total diameter tolerance. The clrcularlty tolerance is within the diameter tolerance. b) Square and hexagonal bars: width across flats. c) Rectangular bars: thickness and width. 12 Copyright International Orga