1、BRITISH STANDARD AEROSPACE SERIES BS EN 2545-2:1995 Titanium and titanium alloy remelting stock and castings Technical specification Part 2: Remelting stock The European Standard EN 2545-2:1995 has the status of a British Standard ICS:49.040.10 UDC 669.295-4:620.1BSEN2545-2:1995 This British Standar
2、d, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15November1995 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/61 Draft for comment 91/7741
3、6 DC ISBN 0 580 24077 0 Committees responsible for this BritishStandard The preparation of this British Standard was entrusted to Technical Committee ACE/61, Inspection and testing requirements for aerospace metallic materials, upon which the following bodies were represented: Aluminium Federation B
4、ritish Forging Industry Association British Investment Casting Association British Iron and Steel Producers Association British Steel Industry Copper Development Association Light Metal Founders Association Ministry of Defence Seamless Steel Tube Association Society of British Aerospace Companies Lt
5、d. Amendments issued since publication Amd. No. Date CommentsBSEN2545-2:1995 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 2545-2 3 List of references Inside back coverBSEN2545-2:1995 ii BSI 12-1999 National foreword This British Sta
6、ndard has been prepared by Technical Committee ACE/61 and is the English language version of EN2545-2:1995 Aerospace series Titaniumand titanium alloy remelting stock and castings Technical specification Part2: Remelting stock, published by the European Committee for Standardization (CEN). EN2545-2
7、was produced as a result of international discussions in which the United Kingdom took an active part. Cross references. The British Standards corresponding to the European Standards referred to in the text are identical in number and title to those given inclause2, with the exception of the three P
8、arts of EN2002. 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 legal obligations. Summary of pages This doc
9、ument comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to4, an inside back cover 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 front cov
10、er.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2545-2 May 1995 ICS 49.040.10 Descriptors: Aircraft industry, titanium, titanium alloy, forging, casting, melting, specification English version Aerospace series Titanium and titanium alloy remeltingstock and castings Technical specification Pa
11、rt2: Remelting stock Srie arospatiale Produits pour refusion et pices moules en titane et alliages de titane Spcification technique Partie2: Produits pour refusion Luft- und Raumfahrt Vormaterial und Gustcke aus Titan und Titanlegierungen Technische Lieferbedingungen Teil2: Vormaterial This European
12、 Standard was approved by CEN on1994-11-25. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning
13、such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own langua
14、ge and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Un
15、ited Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its memb
16、ers. Ref. No. EN 2545-2:1995 EEN2545-2:1995 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standard has successively received
17、the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November1995
18、, and conflicting national standards shall be withdrawn at the latest by November1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem
19、bourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Manufacture 3 4 Dimensions and tolerances 3 5 Internal defects 3 6 External defects 3 7 Chemical composition 3 8 Provision of test samples 3 9 Mechanical
20、 testing 4 10 Marking 4 Table 1 Summary of requirements 4EN2545-2:1995 BSI 12-1999 3 1 Scope and field of application This standard specifies the particular requirements for remelting stock intended for the manufacture of titanium and titanium alloy castings. This standard shall be used in conjuncti
21、on with EN2545-1. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent, amend
22、ments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2002-1, Aerospace series Test methods for metallic materials Part1: Tensile t
23、esting at ambient temperature 1) . EN 2002-2, Aerospace series Test methods for metallic materials Part2: Tensile testing at elevated temperature 1) . EN 2002-5, Aerospace series Test methods for metallic materials Part5: Uninterrupted creep and rupture testing 1) . EN 2545-1, Aerospace series Titan
24、ium and titanium alloy remelting stock and castings Technical specification Part1: General requirements. 3 Manufacture The sponge and additions shall be obtained from suppliers approved by the remelting stock manufacturer. Unless otherwise agreed between the manufacturer and the purchaser, only appr
25、oved wrought scrap shall be used. It shall consist of the remelting stock manufacturers own scrap or scrap from an approved reprocessing plant. Unless otherwise agreed between manufacturer and purchaser, the use of machining chips obtained from external source is forbidden. Melting shall be carried
26、out under vacuum. Charges containing titanium sponge shall be multiple melted. Remelting stock shall be manufactured from a charge made from: virgin materials (sponge+alloying elements) or virgin materials plus a defined and constant percentage of approved scrap up to70% or virgin materials and/or a
27、pproved scrap at the option of the manufacturer. This composition shall be applied unless otherwise specified on the order or manufacturing schedule. 4 Dimensions and tolerances The form, mass, dimensions and tolerances shall be defined by agreement between the manufacturer and the purchaser. The fr
28、equency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 5 Internal defects No defects prejudicial to the intended use. Unless otherwise agreed between the manufacturer and the purchaser and stated on the order or inspection sc
29、hedule, test methods and acceptance criteria shall be at the option of the manufacturer. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 6 External defects The visual inspection shall not reveal any surface conta
30、mination or foreign matter including paint, other than that approved for marking. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 7 Chemical composition See EN2545-1. 8 Provision of test samples Sufficient test s
31、amples shall be provided and prepared from each batch in accordance with the requirements of EN2545-1 for the tests required by the material standard or inspection schedule. 1) Published as AECMA Prestandard at the date of publication of this standardEN2545-2:1995 4 BSI 12-1999 9 Mechanical testing
32、When specified on the material standard, tensile, creep rupture or creep tests shall be made at a frequency of one test per batch and in accordance with: EN 2002-1 for tensile testing at room temperature; EN 2002-2 for tensile testing at elevated temperature; EN 2002-5 for creep and creep rupture te
33、sting. The result shall comply with the requirements of the material standard. 10 Marking Unless otherwise specified on the order, all products shall bear the following marking: material standard number; parent-cast number, identification of the manufacturer and plant, such other marking as will ens
34、ure full identification. The method of marking shall be at the option of the manufacturer provided the marking is permanent. Table 1 Summary of requirements Requirements Clause Product Inspection/Testing Method Standard Frequency Dimensions 4 All Appropriate See 4 Internal defects 5 All See 5 See 5
35、External defects 6 All Visual See 6 Chemical composition 7 All See 7 One per parent-cast Mechanical properties at room temperature 9 If required Tensile test at room temperature EN 2002-1 One per batch Mechanical properties at room temperature 9 If required Tensile test at elevated temperature EN 20
36、02-2 One per batch Creep and creep rupture properties 9 If required Creep test EN 2002-5 One per batch Marking 10 All Visual See EN 2545-1BSEN2545-2:1995 BSI 12-1999 List of references See national foreword.BS EN 2545-2:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI
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