1、BSI 2T*bb O1 W 1624bb9 0258594 9 M 2T66 : 1980 .- (Supemding British Standard T S) UDC 629.7 :669.152624-194462:669. 14.018.8:621.791 .O1 1 210 British Standard Aerospace Series : Specification for I 8/1 O chromium-nickel corrosion-resisting steel tube (Niobium stabilized : 550 MPa) (Weldable) 340 .
2、 650 700 Srie arospatiale : Spcification des tubes en acier 18/10 chrome-nickel rsistant la corrosion (Stabilis au niobium: 550 MPa) (Soudables) Luft- und Raumfahrt-Reihe : Spezifikation fr kotrosionsbestandige Stahlrohre mit 18/1 O Chrom-Nickel-Gehalt (mit N iobiumstabil isierung: 550 MPa) (Schweis
3、sbar) NOTE 1. Attention is drawn to the fact that this British Standard does not. mome into effect until 3 months after the date UI pub!ication. This is to enable users of the standard to obtain mpies end nuke the neassary amendments to their documentation before the effective date. NOTE 2. Tube of
4、the same composition for use in the cold drawn condition ir covered by Britiih Standard T 68. 1. Inspection and testing procedure 1.1 General. This British Standard shall be used in conjunction with sections one and three of the latest issue of British Standard T 100. 1.2 Sulphur printing or deep et
5、ching tests. One sample shall be taken from each ingot for deep etching tests. 2. Process of manufacture The steel shall be manufactured by an electric process. 5. Condition The tube shall be supplied in the finally heat treated condition. 6. Final heat treatment The tube shall be softened by heatin
6、g uniformly, in a suitable atmosphere, at a temperature between 1000 OC and 1125 C and cooling in a suitable manner. NOTE. Cooling in oil is not suitable. A 3. Chemical composition 7. Mechanical properties The steel shall contain: Elernant Carbon Silicon Manganese Phosphorus Sulphur Chromium Nickel
7、Niobium - 0.2 0.5 - - 17.0 9.0 10 x carbon content 0.08 1 .o 2.0 0.035 0.025 19.0 12.0 1 .o I 4. Surface dressing The steel shall be overall dressed. 7.1 Tensile test. The mechanical properties obtained from test pieces, selected, prepared and tested in accordance with the relevant requirements of T
8、 100, shall be as follows. 0.2 x poof mu .min. MPa . (=N/mm2 ) TonriIr min. British Standards Institution Gr 1 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBSI 2T*bb 01 1624669 0258595 O 2T66:1980 Arnd. No. 7.3 Hardness test. The hardness
9、 of the tube shall be not greater than 197 HE or 205 HV. 8.2 The distance between the inner surfaces of that part of the test sample that is flattened shall be as specified I Date of issue Text affected in 7.2. 8.3 There shall be no evidence of fissuring or crazing of either of the surfaces of the t
10、est sample. 8. Susceptibility to intercrystalline corrosion 8.1 The tube shall be subjected to the intercrystalline corrosion test in accordance with the relevant requirements of T 100. This British Standard, having been prepared under the direaion of the Aerospace Standards Committee, was published
11、 under the authority of the Executive Board on 29 February 1980. it comes into effect (see note 1) on 30 May 1980. O British Standards Institution. 1980 ISBN O 580 11 169 5 British Standards Institution Incorporated by Royal Charter, BSI is the independent national body for the preparation of Britis
12、h Standards. It is the UK member of the International Organization for Standardization and UK sponsor of the British National Committee of the International Electrotechnical Commission. Copyright Users of British Standards are reminded that copyright subsists in ail BSI publications. No part of this
13、 publication may be reproduced in any form without the prior permission in writing of ESI. This does not preclude the free use. in the course of implmrnting the standard, of necessary details such as symbols and site, typo or Amendments issued since publication grde designations. Enquiries should be
14、 ddrersed to the Publications Maneger. 101 Pentonville Road, London N1 9ND (Toiophona 01-837 8801 ;Telex 232181. Contract nquirmonts Attention is drawn to ths fact that this British Standard does not purport to include all the necessary provisions of a contract. Rnkion of British Sando& British Stan
15、dards are revised, when necessary, by the issue either of amendment slips or of revised editions, It ir important that UUCI of British Strnbrrb should ascortain tkt thoy oro in poartion of tho btat amdmonts or ditionr. information on all ES1 publications is in the 8s Yearbook, supplemented uch month
16、 by 8SI News which is available to subscribing nwmben of the Imtitution and gives details of new publications, rwisions, arnondments and withdrawn standards. Tho following BSI referens rrlate to the work on this standard: Committee reference ACE116 Draft for Comment 78177607 OC I British Standards I
17、nstitution . 2 Park Street London W1A 2BS . Telephone 01-629 9000 Telex 266933 B002-1.4k-B ACE116 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBSI 2T*bb O1 m 16246b9 025859b 2 m Amendment No. 1 published and effective from 29 November 199
18、1 to British Standard 2T 66 : 1980 (Aerospace Series) Specification for 18/10 chromium-nickel corrosisn- resisting steel tube (Niobium stabilized : 550 MPa)(Weldable) AMB 6853 Revised text AMD 6853 November 1991 Clause 6. final heat treatment In line 3, delete 1 100 “Cy and substitute 1 125 OC. 91 11 -0-0.56k-B ACE116 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling Services
