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1、BRITISH STANDARD AEROSPACE SERIES BS S 532:1969 Incorporating Amendments Nos. 1 and 2 Specification for chromium-nickel- copper-molybdenum corrosion-resisting steel sheet and strip (precipitation hardening: 980/1 180 MPa) UDC 629.7:669.152624328-194:669.14.018.8-41 ? This Standard is obsolescent. Se
2、e the BSI Catalogue for details. September 1999 BS S 532:1969 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 30 September 1969 BSI 27 May 2003 The following BSI references relat
3、e to the work on this standard: Committee reference ACE/15 Draft for comment 68/22041 ISBN 0 580 05522 1 Amendments issued since publication Amd. No.DateComments 4256April 1983 1414827 May 2003Indicated by a sideline BS S 532:1969 BSI 27 May 2003 i Contents Page Forewordii 1Inspection and testing pr
4、ocedure1 2Process of manufacture1 3Chemical composition1 4Surface dressing1 5Condition1 6Heat treatment2 7Mechanical properties2 BS S 532:1969 ii BSI 27 May 2003 Foreword This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct ap
5、plication. 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, an inside back cover and a back cover. The BSI copyright notice displayed in this doc
6、ument indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment. BS S 532:1969 BSI 27 May 2003 1 NOTE 1The specified chemical composition, heat treatment and tensile properties comply with AICMA Recommendation FE PM 65 for material heat-t
7、reated to a tensile strength of 100/120 kgf/mm2. (980/1 180 MN/in2: 98/118 hbar). NOTE 2Sheet and strip of the same composition for use at a higher strength level are covered by the latest edition of BS S 533. 1 Inspection and testing procedure 1.1 This British Standard shall be used in conjunction
8、with the relevant sections of the latest edition of BS S 500. 1.2 The thickness of the material shall be in accordance with the latest edition of BS S 500. Material which has been finally hot rolled prior to heat treatment shall satisfy the tolerances applicable to hot-rolled sheet and strip. Materi
9、al which has been finally cold rolled prior to heat treatment shall satisfy the tolerances applicable to cold-rolled sheet and strip. 1.3 Sulphur printing or deep etching tests. Samples shall be selected in accordance with the latest edition of BS S 500. 2 Process of manufacture The material shall b
10、e manufactured by an electric process unless otherwise agreed between the manufacturer and the purchaser in accordance with the latest edition of BS S 500. 3 Chemical composition The steel shall contain: 4 Surface dressing The material shall be overall dressed in accordance with the requirements of
11、the latest edition of BS S 500. 5 Condition 5.1 The material shall be supplied in the solution treated and descaled condition. 5.2 Finished parts shall be supplied finally heat treated. Element% min.max. Carbon0.040.07 Silicon0.60 Manganese0.801.80 Phosphorus0.035 Sulphur0.025 Chromium15.316.3 Coppe
12、r1.402.10 Molybdenum1.202.00 Nickel5.05.8 Titanium0.050.15 BS S 532:1969 2 BSI 27 May 2003 6 Heat treatment 6.1 Solution treatment. Heat at a temperature within the range 1 000 C to 1 075 C. The time at temperature shall be adequate to ensure that after cooling in air, the mechanical property requir
13、ements of 7.1 are achieved and that those of 7.2 are achieved in the finally heat treated condition. 6.2 Final heat treatment. The final heat treatment of solution treated material shall be: 1) Precipitation treatment: 1st stage. Heat at a temperature of 750 10 C for 2 hours to 4 hours and cool in a
14、ir. 2) Precipitation treatment: 2nd stage. Cool to a temperature of 0 5 C and hold for not less than 2 hours. 3) Precipitation treatment: final stage. Heat at a temperature of 540 10 C for “ hour to 1 hour and cool in air. 7 Mechanical properties The mechanical properties obtained from test pieces s
15、elected and prepared in accordance with the relevant requirements of the latest edition of BS S 500 shall comply with the following. 7.1 Tests in the solution treated condition 1) Hardness test. The hardness shall be not more than 285 HB or 300 HV. 2) Single bend test. The test piece shall be bent w
16、ithout cracking through an angle of 180 over a former with a radius equal to one and a half times the nominal thickness of the sheet or strip. 7.2 Tests in the finally heat treated condition 1) Tensile test. 2) Hardness test. The hardness of the finally heat treated parts shall be: 293 min./363 max.
17、 HB; or 310 min./380 max. HV. 0.2 % proof stressTensile strengthElongation MPaMPa% min.min.max.min. 8009801 1808 blank BS S 532:1969 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It present
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