BRITISH STANDARD AEROSPACE SERIES BS EN 2545 1 1995 Titanium and titanium alloy remelting stock and castings — Technical specification — Part 1 General requirements The European Standard EN 2545 1 199[.]
BRITISH STANDARD AEROSPACE SERIES Titanium and titanium alloy remelting stock and castings — Technical specification — Part 1: General requirements The European Standard EN 2545-1:1995 has the status of a British Standard ICS 49.040.10 BS EN 2545-1:1995 BS EN 2545-1:1995 Committees responsible for this British Standard 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 British 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 Ltd This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1995 © BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/61 Draft for comment 91/77415 DC ISBN 580 24080 Amendments issued since publication Amd No Date Comments BS EN 2545-1:1995 Contents Committees responsible National foreword Foreword Text of EN 2545-1 List of references © BSI 12-1999 Page Inside front cover ii Inside back cover i BS EN 2545-1:1995 National foreword This British Standard has been prepared under the direction of Technical Committee ACE/61 and is the English language version of EN 2545-1:1995 Aerospace series — Titanium and titanium alloy remelting stock and castings — Technical specification — Part 1: General requirements, published by the European Committee for Standardization (CEN) EN 2545-1 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 in clause 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 document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 8, 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 cover ii © BSI 12-1999 EN 2545-1 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM May 1995 ICS 49.040.10 Descriptors: Aircraft industry, titanium, titanium alloy, forging, casting, melting, specification, generalities English version Aerospace series — Titanium and titanium alloy remelting stock and castings — Technical specification — Part 1: General requirements Série aérospatiale — Produits pour refusion et pièces moulées en titane et alliages de titane — Spécification technique — Partie 1: Exigences générales Luft- und Raumfahrt — Vormaterial und Gußstücke aus Titan und Titanlegierungen — Technische Lieferbedingungen — Teil 1: Allgemeine Anforderungen This European Standard was approved by CEN on 1994-11-25 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 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 language 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 United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1995 Copyright reserved to CEN members Ref No EN 2545-1:1995 E EN 2545-1:1995 Foreword Contents 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 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 November 1995, and conflicting national standards shall be withdrawn at the latest by November 1995 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, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom Foreword Scope Normative references Definitions Quality assurance Manufacture Traceability Freedom from defects Testing Marking 10 Acceptance 11 Inspection and test report 12 Packaging 13 Wording of orders Annex A (normative) Sketch to illustrate definitions Table Page 3 4 4 5 6 © BSI 12-1999 EN 2545-1:1995 Scope This standard specifies the general requirements for the manufacture, inspection and testing of remelting stock intended for the production of castings in titanium and titanium alloys Particular requirements are defined in EN 2545-2 and EN 2545-3 This standard shall be applied in conjunction with EN material standards unless otherwise specified on the drawing, order or inspection schedule By agreement between the manufacturer and the purchaser it may also be applied to other materials or delivery conditions not covered by EN standards This agreement shall be formalised by reference to this standard on the drawing, order or inspection schedule 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 amendments 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 2000, Aerospace series — Quality assurance — EN aerospace product — Approval of the quality system of manufacturers EN 2078, Aerospace series — Metallic materials — Manufacturing schedule — Inspection schedule — Inspection and test report — Description and rules for use EN 2545-2, Aerospace series — Titanium and titanium alloy remelting stock and castings — Technical specification — Part 2: Remelting stock EN 2545-3, Aerospace series — Titanium and titanium alloy remelting stock and castings — Technical specification — Part 3: Pre-production and production castings © BSI 12-1999 Definitions For the purposes of this standard, the following definitions apply: The chart given in Annex A completes the following definitions 3.1 charge different products that make up a furnace charge to be melted in order to obtain a parent-cast or castings 3.2 melt a mass of homogeneous liquid metal from a single charge 3.3 remelt solid metal resulting from a single melt 3.4 parent-cast a cast of remelting stock to be used for the production of castings 3.5 remelting stock metal supplied in cast or wrought form, the composition of which has been established by chemical analysis 3.6 casting a part manufactured by vacuum arc remelting (VAR) or electron beam melting (EBM) 3.7 pre-production castings castings produced to a particular procedure which qualify the method of manufacture and mould configuration and demonstrate that the requirements of the purchaser can be met 3.8 Batches 3.8.1 batch of re-melting stock re-melting stock of the same form, the same nominal dimensions and from the same parent-cast EN 2545-1:1995 3.8.2 batch of castings castings of the same part number, from the same melting operation for EBM process or from the same electrode without alteration of the melting conditions for VAR process They have been submitted together to hot isostatic pressing and, if applicable, to heat treatment 3.8.3 batch of scrap materials of the same type (see 4.2 ), the same chemical composition and, if necessary, submitted to the same conditioning operations 3.9 inspection schedule see EN 2078 3.10 manufacturing schedule see EN 2078 3.11 inspection and test report see EN 2078 Quality assurance 4.1 Approval of the quality system of manufacturers See EN 2000 4.2 Scrap approval Scrap shall be: — prepared according to a procedure approved by the purchaser The procedure shall include verification of chemical composition, freedom from contamination and the absence of foreign material; — approved by: — the scrap purchaser; — the purchaser of remelting stock electrodes (VAR process), or — the purchaser of the casting (EBM process) Additional requirements are given in EN 2545-2 and in EN 2545-3 Manufacture 5.1 The method of melting shall be in accordance with EN 2545-2 or EN 2545-3 5.2 The details of manufacture shall be recorded in the manufacturing schedule 5.3 When a manufacturing schedule has been adopted, no change shall be made without the written agreement of the purchaser 5.4 Unless otherwise agreed and stated on the drawing, order and/or manufacturing schedule, the product shall be delivered in the heat treatment condition specified in the material standard 5.5 If a temperature (value and tolerance) is stated, that temperature shall be mandatory If a temperature range is stated, a temperature within that range, reduced by the furnace tolerances, shall be selected to give the required properties Unless otherwise specified, the furnace charge shall be maintained at the temperature subject to the tolerances in Table 1, for the period stated Table Selected temperature ° C F < 550 550 k F k 250 ± ± 10 Tolerances ° C Traceability 6.1 Each remelting stock shall be traceable to its charge 6.2 Each casting shall be traceable to its charge and batch at all stages of manufacture and delivery Freedom from defects All remelting stock and castings shall be free from harmful defects Notwithstanding previous acceptance complying with this standard, any remelting stock or casting found, at a later stage, to contain such defects may be rejected Testing The tests required by the material standard, order, inspection schedule or drawing, shall be made in accordance with the relevant test standard If a test standard does not exist, the method to be used shall be agreed between the manufacturer and the purchaser Unless otherwise stated on the drawing or inspection schedule, the frequency of testing shall be as specified in EN 2545-2 or EN 2545-3 The location of test samples shall be as indicated on the drawing or inspection schedule The test samples and corresponding test pieces shall be marked in such a manner as to ensure that their identity and location with respect to the product and the batch is maintained 8.1 Chemical composition It shall conform with the material standard and shall be determined on each melt or parent-cast by means of representative samples © BSI 12-1999 EN 2545-1:1995 The method of analysis shall be selected by the manufacturer but in case of dispute, the method defined in the relevant ISO standard shall be used If no ISO standard exists, a fundamental method of chemical analysis shall be used Elements not specified in the material standard shall not be added without the agreement of the purchaser 8.2 Mechanical testing Preparation of test samples and test pieces: 8.2.1 If the test samples have to be heat treated this shall be done in accordance with the heat treatment for use condition specified in the material standard 8.2.2 The mechanical test pieces shall be machined in the heat treatment for use condition in accordance with the requirements of the relevant EN standard Their surface shall be absolutely free from contamination 8.2.3 The strain rate up to the proof stress shall be within the range of 0,3 %/min to 0,7 %/min In case of dispute, a strain rate of 0,5 %/min shall be used After proof stress, the speed may be increased up to %/min or such that failure occurs within approximately 8.3 Special tests Special tests and inspections may be required by the purchaser (e.g micro and macro structure examination) In this case, after agreement between the purchaser and the manufacturer, the nature of test, methods, frequency, acceptance criteria and re-test procedure shall be specified on the order, drawing or inspection schedule 8.4 Re-tests If any requirement is not met, re-tests shall be carried out under the following conditions: — if the test procedure or test piece preparation is faulty, testing shall be re-applied at the original frequency after identification of the failure cause; — if the incorrect result cannot be attributed to faulty test procedure or test piece preparation, further test samples shall be taken but at twice the original frequency; — at least one of the samples shall be taken from the product(s) on which the incorrect results were obtained (unless already rejected by the manufacturer after suitable identification of the cause of failure) © BSI 12-1999 If all results are satisfactory, the batch shall be accepted If one or more results are unsatisfactory, the batch shall be: — rejected, or — re-heat treated and tested as a new batch, except for chemical composition and radiographic examination 8.5 Re-heat treatment With the exception of stress relieving no product or test sample shall be re-heat treated more than twice without the agreement of the purchaser Marking See: — EN 2545-2 for remelting stock; — EN 2545-3 for castings The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements 10 Acceptance If required, the manufacturer shall inform the purchaser or his chosen agent of the planned dates for sampling and acceptance testing in order that these operations may be witnessed 11 Inspection and test report The manufacturer shall furnish with each delivery, an inspection and test report conforming to the requirements of EN 2078, and stating the following: — manufacturer’s name and address; — order number; — material standard number; — drawing or part or product number; — quantity; — melt, parent-cast and/or batch number(s); — melting process; — casting process; — delivery condition of the material; — batch and/or test sample heat treatment conditions if necessary; — results of all tests, re-tests and chemical analysis; — inspector’s stamp EN 2545-1:1995 12 Packaging All necessary precautions shall be taken to prevent damage and corrosion during transport The exterior of the packing shall bear the following information: — name of purchaser; — mass; — order number and sufficient information to enable package contents to be related to the relevant documentation 13 Wording of orders Orders shall clearly indicate: — quantities to be supplied; — date(s) of delivery; — material standard number; — delivery condition of the material; — dimensions of re-melting stock or casting number or its drawing number with the relevant issue number, if applicable; — number of the inspection schedule and/or, where appropriate, manufacturing schedule; — method of melting if required; — delivery address; — nature and type of packing, if necessary © BSI 12-1999 EN 2545-1:1995 Annex A (normative) Sketch to illustrate definitions Not to be used as requirements for the manufacturing process (given in the clauses defining manufacture in EN 2545-1, EN 2545-2 and EN 2545-3) Melter Vacuum arc remelting (VAR) © BSI 12-1999 Founder Electron beam melting (EBM) blank BS EN 2545-1:1995 List of references See national foreword © BSI 12-1999 BS EN 2545-1:1995 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards 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 would be grateful if anyone 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