BS 2HC 209-1989 Specification for low carbon precipitation hardening nickel-chromium-aluminium-molybdenum-niobium alloy castings (Nickel base Cr 11 5 Al 6 0 Mo 4 0 Nb 2 0)《低碳、沉淀硬化镍.pdf

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1、BRITISH STANDARD AEROSPACE SERIES BS2HC 209:1989 Specification for Low carbon, precipitation hardening nickel- chromium-aluminium- molybdenum-niobium alloy castings (Nickel base Cr11.5, Al6.0, Mo4.0, Nb2.0) UDC 629.7:669.245267128293 14:669.245.018.298BS2HC209:1989 This BritishStandard, having been

2、prepared under the directionof the Aerospace Standards Policy Committee ACE/-, was published under theauthority of the Board ofBSIand comes into effect on 31October1989 BSI 01-2000 First published October1979 First revision October1989 The following BSI references relate to the work on this standard

3、: Committee referenceACE/48 Draft for comment88/70332DC ISBN 0 580 17572 3 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Aerospace Standards Policy Committee(ACE/-) to Technical CommitteeACE/48, upon which the following bodies were repre

4、sented: 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 CommentsBS2HC209:1989 BSI 01-2000 i Contents Page Committees responsibl

5、e Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Material requirements 1 Table 1 Material requirements 2BS2HC209:1989 ii BSI 01-2000 Foreword This revision supersedes BSHC209:1979, which is withdrawn, and includes trace elements in the chemical composition and is presented in a tabular fo

6、rmat. 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

7、 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2 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 insi

8、de front cover.BS2HC209:1989 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, Cr11.5, Al6.0, Mo4.0, Nb2.0) in the form of castings and remelting stock. 2 Reference

9、s This standard makes reference to the following BritishStandards: BSHC100, Inspection and testing procedure for iron, nickel, copper, cobalt and refractory metal base alloy castings. BSEN2500, Aerospace series Guidelines for the preparation and use of standards for metallic materials 1) . 3 Materia

10、l requirements The requirements for the material in the delivery and use of conditions are given inTable 1, the format and nomenclature of which complies with the requirements defined in BSEN2500. 1) In preparation.BS2HC209:1989 2 BSI 01-2000 Table 1 Material requirements 1 Chemical composition % or

11、 (parts per million) Element C Si Mn S Ag Al As B Bi Cd Co Cr Cu Fe Ga In Min. 0.03 5.5 0.005 11.0 Max. 0.07 0.50 0.25 0.015 (5) 6.2 (30) 0.015 (0.5) (0.2) 1.0 12.0 0.50 0.50 (30) (0.2) Element Mg Mo Nb + Ta Pb Sb Se Sn Te Ti Tl V W Zn Zr Ni Min. 3.8 1.5 0.4 0.05 Base Max. (50) 4.5 2.2 (5) (3) (5) (

12、30) (2) 1.0 (0.2) 0.1 0.2 (10) 0.15 2 1 2 3 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 and heat treatment As cast, seenote1.

13、 8 Test piece heat treatment sampling Cast None BS HC100, sections1 and2 Separate or integral None. Seenote1 Seenote2 12 Tensile Temperature C Ambient 13 Proof stress R p 0.2 MPa W 685 14 Strength R m MPa W 755 15 Elongation A % W 6 21 Stress rupture Temperature C 980 22 Time t h W 45 25 Rupture str

14、ess B R MPa 150 27 NOTES 1. If required by the order, castings shall be treated under vacuum or protective atmosphere for2hours at1 170 10 C, and cooled to room temperature followed by precipitation treatment at870 10 C for2 hours. 2. If required, the properties to be obtained on test pieces machine

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