1、BRITISH STANDARD BS 643:1970 Specification for White metal ingots for capping steel wire ropesBS643:1970 This British Standard, having been approved by the Non-ferrousMetals Industry Standards Committee, was published under the authority ofthe Executive Board on 11August 1970 BSI 09-1999 First publi
2、shed December 1935 First revision August 1970 The following BSI references relate to the work on this standard: Committee references NFE/27 NFE/27/3 Draft for comment 67/32182 ISBN 580 06282 1 Co-operating organizations The Non-ferrous Metals Industry Standards Committee, under whose supervision thi
3、s British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were dire
4、ctly represented on the committee entrusted with the preparation of this British Standard: Aluminium Federation Institution of Mechanical Engineers Association of Bronze and Brass Founders (Automobile Division)* Association of Consulting Engineers Institution of Mining and Metallurgy Board of Trade
5、Institution of Production Engineers British Bronze and Brass Ingot Institution of Structural Engineers Manufacturers Association Lead Development Association British Electrical and Allied Manufacturers Light Metal Founders Association Association* London Metal Exchange* British Lead Manufacturers As
6、sociation* Magnesium Industry Council British Non-ferrous Metals Federation Ministry of Defence, Army Department* British Non-Ferrous Metals Federations Ministry of Defence, Navy Department High Conductivity Copper Group National Brassfoundry Association British Non-ferrous Metals Research Non-ferro
7、us Metal Stockists Association* Post Office* Copper Development Association Royal Institute of British Architects Crown Agents for Oversea Governments and Society of Motor Manufacturers and Administrations Traders Ltd.* Electric Cable Makers Confederation* Tin Research Institute* Institute of Britis
8、h Foundrymen Zinc Development Association Institute of Metals Individual manufacturers British Federation of Master Printers Institute of Marine Engineers British Railways Board Institution of Gas Engineers British Tin Box Manufacturers Federation London Transport Board Electronic Engineering Associ
9、ation Ministry of Power Federation of Wire Rope Manufacturers of National Coal Board Great Britain Solder Makers Association Gas Council Individual manufacturers. Amendments issued since publication Amd. No. Date CommentsBS643:1970 BSI 09-1999 i Contents Page Co-operating organizations Inside front
10、cover Foreword ii 1 General requirements 1 1.1 Scope 1 1.2 Freedom from defects 1 1.3 Certificate of compliance 1 1.4 Inspection 1 1.5 Independent test 1 1.6 Marking 1 2 Specific requirements 1 2.1 General 1 2.2 Chemical composition 2 2.3 Form 2BS643:1970 ii BSI 09-1999 Foreword This standard makes
11、reference to the following British Standard: BS 3338, Methods for the sampling and analysis of tin and tin alloys. This British Standard for capping metal was first issued in1935 and this revised edition has been prepared as one of a series of standards for non-ferrous metals authorised by the Non-F
12、errous Metals Industry Standards Committee. In preparing this edition the chemical composition has been reviewed and in addition to the limits specified for the main alloying elements, limits are now set for the three most important impurities (copper, aluminium and zinc). Also, the limit previously
13、 included for total impurities has been retained but as a guide to the analyst, this is stated as the sum of the three main impurities plus five others (nickel, iron, cadmium arsenic and bismuth) the presence of which should be checked, plus any other impurity. Appendix A included in the earlier edi
14、tion relating to a method of sampling has been omitted as the method subsequently published for the sampling of white metal bearing alloy ingots is considered to be equally applicable to capping metal. Appendix B included in the earlier edition setting out a recommended method of socketing has also
15、been omitted as this is not part of a specification for the ingot material. Attention is drawn to the fact that a similar appendix is included in BS463 “Drop-forged sockets for wire ropes for general engineering purposes”. A British Standard does not purport to include all the necessary provisions o
16、f a contract. Users of British Standards are responsible for 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, pages1 and 2 and a back
17、 cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS643:1970 BSI 09-1999 1 1 General requirements 1.1 Scope This British Standard specifies requirements for white metal ingots
18、for capping steel wire ropes for colliery and general engineering purposes. 1.2 Freedom from defects The ingots shall be free from harmful inclusions or other defects. 1.3 Certificate of compliance The supplier shall certify that the material complies with the requirements of this standard. 1.4 Insp
19、ection The purchaser shall notify the supplier when placing the order if it is his intention to inspect the material at the suppliers works. The supplier shall afford the purchaser all reasonable facilities to satisfy himself that the material is in accordance with this standard. For this purpose th
20、e purchaser or his representative may, by prior arrangement, attend to inspect the material, to select and identify the test samples for testing and to witness the tests being made. The purchaser shall be at liberty to take samples from the ingots and have them analysed. The cost of such analysis sh
21、all be borne by the purchaser and the results shall be communicated to the supplier if they are not in accordance with2.2. 1.5 Independent test Should there be a dispute about the compliance of the material with this standard the supplier and the purchaser shall have the right to have tests made by
22、a mutually acceptable testing authority. The results obtained by the independent testing authority shall be accepted as final. If the material does not comply with the standard the cost of independent testing shall be borne by the supplier. If the material complies with the standard the cost shall b
23、e borne by the purchaser. The method of sampling for analysis shall be in accordance with BS3338 “Methods for the sampling and analysis of tin and tin alloys”, Part14, “Sampling of white metal bearing alloy ingots”, and the methods of analysis shall be in accordance with BS3338 “Methods for the samp
24、ling and analysis of tin and tin alloys”. 1.6 Marking Each ingot shall be distinctly marked to indicate the British Standard designation of the alloy (e.g. BS643). 2 Specific requirements 2.1 General The ingots shall comply with the general requirements of Section1 and with the following chemical co
25、mposition.BS643:1970 2 BSI 09-1999 2.2 Chemical composition The chemical composition of the ingots shall be: The foregoing shall be determined analytically. 2.3 Form The material shall be supplied in the form of deeply notched ingots of 25kg having at least two segments. Tin not less than 4.75 nor m
26、ore than5.25 % Antimony not less than 14.5 nor more than15.5 % Lead the remainder. Impurities The supplier shall undertake that the material does not contain the following impurities in excess of the amounts stated: Aluminium 0.005 % Copper 0.05 % Zinc 0.005 % Total of aluminium + copper + zinc + ar
27、senic + bismuth + cadmium + iron + nickel + any other impurity 0.2 %3 blankBS 643:1970 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the in
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