BS HC 301-1973 Specification for cobalt base chromium-nickel-tungsten alloy castings (Cr 25 5 Ni 10 5 W 7 5)《钴基铬-镍-钨合金铸件规范(铬25 5、镍10 5、钨7 5)》.pdf

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1、BRITISH STANDARD AEROSPACE SERIES BS HC 301:1973 Specification for Cobalt base chromium-nickel- tungsten alloy castings (Cr 25.5, Ni10.5, W7.5) UDC 629.7:669.25526242714BSHC301:1973 This British Standard, having been approved by the AerospaceIndustry Standards Committee, was published underthe autho

2、rity of the Executive Board on 2February1973 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/60 Draft for comment 71/35555 ISBN 0 580 07188 X A British Standard does not purport to include all the necessary provisions of a contract. Users of Brit

3、ish 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, page1 and a back cover. This standard has been upd

4、ated (see copyright date) 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. Date CommentsBSHC301:1973 BSI 01-2000 i Contents Page 1 Special foundry approval 1 2 Inspection and testing proced

5、ure 1 3 Chemical composition 1 4 Condition 1 5 Mechanical properties 1ii blankBSHC301:1973 BSI 01-2000 1 NOTEThis specification complies with AICMA Recommendation Co-C91-HT, except for the carbon content and the absence of a hardness requirement. 1 Special foundry approval Manufacture of castings to

6、 this specification mayberestricted to foundries specially approved inaccordance with the requirements ofBSHC100,1.1. 2 Inspection and testing procedure This British Standard shall be used in conjunction with the relevant sections of BSHC100 as follows: 3 Chemical composition The re-melting stock an

7、d the castings shall contain: 4 Condition Castings shall be supplied in the as cast condition unless otherwise agreed between the purchaser and the founder, in which case the condition required shall be stated on the drawing or order. 5 Mechanical properties The stress rupture properties obtained fr

8、om test pieces representing re-melting stock and castings, selected, prepared and tested in accordance with the relevant requirements of BS HC 100, shall be: Re-melting stock Sections 1 and 2 Precision castings Sections 1 and 3 Element % min. max. Carbon 0.40 0.55 Silicon 0.5 1.0 Manganese 0.5 1.0 P

9、hosphorus 0.04 Sulphur 0.04 Chromium 24.5 26.5 Iron 2.0 Nitrogen 0.08 Nickel 9.5 11.5 Tungsten 7.0 8.0 Cobalt Remainder Temperature Stress Time to rupture Elongation C N/mm 2 h % min. min. 815 210 15 4 NOTE1 N/mm 2= 1 MN/m 2= 1 MPa. Information on SI units is given in BS 3763, “The International Sys

10、tem of units (SI)”; seealso BS 350, “Conversion factors and tables”.BS HC 301:1973 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 intern

11、ational level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We w

12、ould be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating

13、service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for inter

14、national standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Tec

15、hnical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and recei

16、ve substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the internat

17、ional standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This d

18、oes not preclude 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:02089967070.

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