BS-6S-80-1990.pdf
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1、BRITISH STANDARD AEROSPACE SERIES BS 6S 80:1990 (Superseding BS 5S 80) Incorporating Amendment No. 1 Specification for High chromium-nickel corrosion-resisting steel forging stock, bars, forgings and parts (880-1080 MPa, limiting ruling section 100 mm) Licensed Copy: sheffieldun sheffieldun, na, Wed
2、 Dec 06 12:28:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6S 80:1990 This British Standard, having been prepared under the direction of the Aerospace Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 December 1990 BSI 02-2000 The following BS
3、I references relate to the work on this standard: Committee reference ACE/15 Draft for comment 88/71652 DC ISBN 0 580 18044 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Committee (ACE/-) to Technical Committee AC
4、E/15, upon which the following bodies were represented: British Forging Industry Association British Independent Steel Producers Association British Industrial Fasteners Federation British Investment Casting Trade Association British Steel Industry British Steel Industry (Wire Section) Civil Aviatio
5、n Authority (Airworthiness Division) Institute of British Foundrymen Ministry of Defence National Association of Steel Stockholders Rolls-Royce Ltd. Seamless Steel Tube Association Society of British Aerospace Companies Ltd. Steel Casting Research and Trade Association Amendments issued since public
6、ation Amd. No.Date of issueComments 6396September 1991 Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6S 80:1990 BSI 02-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1
7、 2References1 3Technical requirements1 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6S 80:1990 ii BSI 02-2000 Foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is a rev
8、ision of BS 5S 80:1976, which is withdrawn. The following changes have been embodied in this issue of the standard. The standard has been converted to the AECMA format. The chemical composition has been amended both to control and permit the addition of the elements copper, molybdenum, niobium, tin,
9、 titanium, vanadium and tungsten. Tempering temperatures have been changed to permit greater flexibility and higher temperatures. On the second temper the lower permitted temperature has been raised. The option to air cool from either tempering operation has been removed, to reduce the risk of slow
10、cooling through the temper embrittling range. A new designation, S80E, has been added to standardize the supply of bars in the softened condition and permit supply at sizes greater than the ruling section. A temperature tolerance of 10 C on the selected heat treatment temperature has been introduced
11、. Stress-relieving after the final straightening operation has been restricted to a temperature of between 300 C and 350 C, to remove the risk of temper embrittlement during this operation. A limit on bundle mass during heat treatment has been introduced. A maximum hardness for softened material has
12、 been introduced. The units given in line 20 of the table for Izod impact strength are ft.lbf because Izod testing machines are calibrated in imperial units. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for thei
13、r 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 to 3 and a back cover. This standard has been updated (see copyright date) and m
14、ay have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6S 80:1990 BSI 02-20001 1 Scope This standard specifies characteristics of a cor
15、rosion-resisting high chromium-nickel steel (Iron base, Cr 16.5, Ni 2.5, C 0.16) supplied in the following forms, and as parts, for general aerospace use: a) Forging stock: designation S80A; b) Forgings: designation S80C; c) Forged and rolled bar, softened: designation S80E; d) Black bars, hardened
16、and tempered: designation S80B; e) Bright bar, hardened and tempered: designation S80D; 2 References BS S 100, Procedure for inspection and testing of wrought steels (other than sheet, strip and tubes). BS EN 2500, Guidelines for the preparation and use of standards for metallic materials1). 3 Techn
17、ical requirements The technical requirements for material to this standard shall comply with those specified in the table. All material supplied shall comply with the requirements appropriate to its dimensions and condition as specified in the standard given in line 5 of the tables. Symbols and unit
18、s in the tables shall be interpreted in accordance with BS EN 2500. One sample shall be taken from each ingot for sulphur printing or deep etching tests. The material shall be overall dressed. Parts finally heat treated after machining shall comply with BS S 100 Sections 1 and 7. Parts shall be supp
19、lied in the hardened and double tempered condition. 1) In preparation. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6S 80:1990 2 BSI 02-2000 High chromium nickel corrosion resisting steel forging stock and forgings 1 Chemical compositi
20、on ElementCSiMnPSCoCrCuMoNbNiSnTiVWFe Minimum0.12 15.02.0 Base Maximum0.20 1.01.00.0300.0250.0518.00.30 0.30 0.05 3.00.020.05 0.20 0.05 212345 3 Method of meltingAir melted by an electric process 4 Form Method of production Limit dimensions Forging stock Cast or wrought Forgings Deu 100 mm 5 Accepta
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