1、BRITISH STANDARD AEROSPACE SERIES BS2HC 207:1989 Specification for Nickel-cobalt-tungsten- chromium-aluminium- tantalum-hafnium- titanium alloy castings (Nickel base Co10.0, W10.0, Cr9.0, Al5.5, Ta2.5,Hf1.5,Ti1.5) UDC 629.7:669.2452527267129429729514BS2HC207:1989 This BritishStandard, having been pr
2、epared under the directionof the Aerospace Standards Policy Committee ACE/-, was published under the authority of the Board of BSI andcomes into effect on 31October 1989 BSI 01-2000 First published October 1979 First revision The following BSI references relate to the work on this standard: Committe
3、e reference ACE/48 Draft for comment88/70333DC ISBN 0 580 17574 X Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/48, upon which the following bodies were represented:
4、 British Industrial Fasteners Federation British Steel Industry Ministry of Defence Seamless Steel Tube Association Society of British Aerospace Companies Limited Amendments issued since publication Amd. No. Date of issue CommentsBS2HC207:1989 BSI 01-2000 i Contents Page Committees responsible Insid
5、e front cover Foreword ii 1 Scope 1 2 References 1 3 Material requirements 1 Table 1 Material requirements 2BS2HC207:1989 ii BSI 01-2000 Foreword This revision supersedes BS HC207:1979, which is withdrawn, and includes trace elements in the chemical composition and is presented in a tabular format.
6、The basic specification for the material remains unchanged. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from
7、legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and2 and a back 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 fron
8、t cover.BS2HC207:1989 BSI 01-2000 1 1 Scope This BritishStandard specifies the chemical composition, mechanical properties and inspection and test requirements for a heat resisting nickel alloy (Nickel base, Co10.0, W10.0, Cr9.0, Al5.5, Ta2.5, Hf1.5, Ti1.5) in the form of castings and remelting stoc
9、k. 2 References This standard makes reference to the following BritishStandards: BS HC100, Inspection and testing procedure for iron, nickel, copper, cobalt and refractory metal base alloy castings. BS EN2500, Aerospace series Guidelines for the preparation and use of standards for metallic material
10、s 1) . 3 Material requirements The requirements for the material in the delivery and use of conditions are given in Table 1, the format and nomenclature of which complies with the requirements defined in BS EN2500. 1) In preparation.BS 2HC 207:1989 2 BSI 01-2000 Table 1 Material requirements 1 Chemi
11、cal composition% or (parts per million) Element C Si Mn S Ag Al As B Bi Cd Co Cr Cu Fe Ga Hf Min. 0.13 5.25 0.01 9 0 8.0 1.3 Max. 0.17 0.20 0.20 0.010 (5) 5.75 (30) 0.02 (0.5) (0.2) 11.0 10.0 0.10 0.50 (30) 1.7 Element In Mg Mo Pb Sb Se Sn Ta Te Ti Tl V W Zn Zr Ni Min. 2.25 1.25 9.0 0.03 Base Max. (
12、0.2) (30) 0.5 (5) (3) (5) (30) 2.75 (2) 1.75 (0.2) 0.1 11.0 (5) 0.08 2 1 2 3 4 5 3 Method of melting Vacuum melted and cast 4 Form Remelt stock Castings 5 Acceptance standard BS HC100, sections1 and2 BS HC100, sections1 and3 6 Delivery condition and heat treatment As cast, seenote1. 7 Use condition
13、and heat treatment As cast, seenote1. 8 Test piece heat treatment sampling Cast None BS HC100, sections1 and2 Separate or integral None. Seenote1 Seenote2 21 Stress rupture Temperature C 760 1040 850 1040 22 Time t h W 40 W 30 W 22 W 50 25 Rupture stress R MPa 695 124 465 108 27 NOTES 1. If required
14、 by the order, castings shall be heat treated under vacuum or protective atmosphere for16hours at870 10 C, followed by cooling in vacuum or protective atmosphere. 2. If required, the properties to be obtained on test pieces machined from designated areas of castings shall be agreed between the manuf
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