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1、BRITISH STANDARD AEROSPACE SERIES BS S 529: 1970 (Superseding, in part, BS S 522) Specification for 23/14 chromium-nickel heat-resisting steel sheet and strip (Niobium stabilized: 54 hbar) (Elevated temperature properties not verified) UDC 629.7:669.152624293:669.14.018.4 41 Licensed Copy: London So
2、uth Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS S 529:1970 This British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authority of the Executive Board of the Institution on 27
3、 January 1970 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/15 Draft for comment 69/2002 ISBN 0 580 05905 7 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible fo
4、r their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2 and a back cover. This standard has been updated (see copyright date
5、) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Co
6、py, (c) BSI BS S 529:1970 BSI 01-2000i Contents Page 1Inspection and testing procedure1 2Process of manufacture1 3Chemical composition1 4Surface dressing1 5Condition1 6Final heat treatment1 7Mechanical properties1 8Intercrystalline corrosion test2 Licensed Copy: London South Bank University, London
7、South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS S 529:1970 BSI 01-20001 1 Inspection and testing procedure 1.1 T
8、his British Standard shall be used in conjunction with BS 2S 500, Sections 1 and 6. 1.2 The thickness of the sheet and strip shall be in accordance with BS 2S 500, Table 1 for material which has been finally hot rolled prior to heat treatment, or in accordance with Table 2 for material which has bee
9、n finally cold rolled prior to heat treatment. 1.3 Sulphur printing or deep etching tests. Samples shall be selected in accordance with BS 2S 500, 1.8.2.1. 2 Process of manufacture The material shall be manufactured by an electric process unless otherwise agreed between the manufacturer and the purc
10、haser in accordance with BS 2S 500, 1.3.1. 3 Chemical composition The steel shall contain: 4 Surface dressing The material shall be overall dressed in accordance with BS 2S 500, 1.5.1. 5 Condition The material shall be supplied in the softened and descaled condition. 6 Final heat treatment Softening
11、 shall be carried out by heating at a temperature between 1 000 C and 1 100 C and cooling in air or quenching in oil or water. 7 Mechanical properties The mechanical properties obtained from test pieces selected and prepared in accordance with the relevant requirements of BS 2S 500 shall comply with
12、 the following: 1) Tensile test. The values in hectobars are to be regarded as the standard. NOTEConversion factors: 1 hbar = 107 N/m2 = 0.6475 tonf/in2 = 1.02 kgf/mm2. Information on SI units is given in BS 350, “Conversion factors and tables”, and in PD 5686, “The use of SI units”. 2) Hardness tes
13、t. The hardness of the material shall be not more than 179 HB or 190 HV. Element % min.max. Carbon Silicon Manganese Phosphorus Sulphur Chromium Nickel Niobium 0.2 0.5 22.0 13.0 10 carbon content 0.12 1.0 2.0 0.035 0.025 25.0 16.0 1.4 0.2 % proof stress Tensile strength Elongation on thickness Less
14、than 1.5 mm 1.5 to 3.0 mm Over 3.0 mm hbartonf/in2hbartonf/in2% min.min.min.min.min.min.min. 2113.55435222630 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS S 529:1970 2 BSI 01-2000 3) Single bend test. The
15、 test piece shall withstand being bent cold without cracking through an angle of 180 and closed flat. 8 Intercrystalline corrosion test 8.1 A bend test piece shall be selected by the inspector to represent each batch. The test piece shall be heated for 30 minutes at a temperature of 650 10 C and coo
16、led in air. It shall then be immersed for 72 hours in a boiling solution having the following composition: 111 g copper sulphate crystals (CuSO45H2O) 98 g concentrated sulphuric acid (specific gravity 1.84) made up to 1 litre with distilled water. Precautions shall be taken during boiling to prevent
17、 concentration due to evaporation. 8.2 The test piece treated in accordance with 8.1, shall then be subjected to, and meet the requirements of, the single bend test in accordance with 7 3). 8.3 Retests 8.3.1 If any test piece fails to meet the requirements of 8.2 the inspector shall select two furth
18、er test pieces from the batch, one of which shall be taken from the item originally sampled, unless that item has been withdrawn by the manufacturer. 8.3.2 Both these further test pieces, selected and treated in accordance with 8.3.1 shall be treated in accordance with 8.1 and tested in accordance w
19、ith, and meet the requirements of, 8.2. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncon
20、trolled Copy, (c) BSI BS S 529: 1970 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal
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28、de the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:58:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI