1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3351:2012Aerospace series Titanium alloy Ti-4Al-4Mo-2Sn Solution treated and aged Forgings De 150 mmBS EN 3351:2012 BRITISH STANDARDNational forewordThis British Standard i
2、s the UK implementation of EN 3351:2012. It supersedes BS 2TA 48:2009 and BS 2TA 51:2009, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/61/-/49, Titanium and its Alloys for Aerospace Purposes.A list of organizations represented on this committee
3、 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 78583 2 ICS 49.025.3
4、0 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate Text affectedBS EN 3351:2012EUROPEAN STANDARD NORME EUR
5、OPENNE EUROPISCHE NORM EN 3351 October 2012 ICS 49.025.30 English Version Aerospace series - Titanium alloy Ti-4Al-4Mo-2Sn - Solution treated and aged - Forgings - De 150 mm Srie arospatiale - Alliage de titane Ti-4Al-4Mo-2Sn - Mis en solution et revenu - Pices forges ou matrices - De 150 mm Luft- u
6、nd Raumfahrt - Titanlegierung Ti-4Al-4Mo-2Sn - Lsungsgeglht und ausgelagert - Schmiedestcke - De 150 mm This European Standard was approved by CEN on 23 June 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa
7、rd 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,
8、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulg
9、aria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tu
10、rkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN
11、 3351:2012: EBS EN 3351:2012EN 3351:2012 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative references 5BS EN 3351:2012EN 3351:2012 (E) 3 Foreword This document (EN 3351:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN)
12、. After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status
13、of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of
14、 patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria
15、, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
16、 and the United Kingdom. BS EN 3351:2012EN 3351:2012 (E) 4 Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-004. B
17、S EN 3351:2012EN 3351:2012 (E) 5 1 Scope This European Standard specifies the requirements relating to: 1)Titanium alloy Ti-4Al-4Mo-2Sn Solution treated and aged Forgings De 150 mm for aerospace applications. NOTE Other common designation: Ti550, AECMA: TI-P63, ASD-STAN: TI-P63001. 2 Normative refer
18、ences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. E
19、N 2032-2, Aerospace series Metallic materials Part 2: Coding of metallurgical condition in delivery condition EN 2954-002, Aerospace series Macrostructure of titanium and titanium alloy wrought products Part 002: Macrostructure of bar, section, forging stock and forgings EN 4258, Aerospace series Me
20、tallic materials General organization of standardization Links between types of EN standards and their use EN 4500-004, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 004: Specific rules for titanium and titanium alloys 2) EN 4800-005, Aerospace se
21、ries Titanium and titanium alloys Technical specification Part 005: Forging stock EN 4800-006, Aerospace series Titanium and titanium alloys Technical specification Part 006: Pre-production and production forgings 1) Quality Grade 2 according to EN 4800-005. 2) Published as ASD-STAN Standard at the
22、date of publication of this standard (www.asd-stan.org). BS EN 3351:2012EN 3351:2012 (E) 6 1 Material designation Titanium alloy Ti-4Al-4Mo-2Sn 2 Chemical composition % Element AI Mo Sn Si O N H Fe C Others Ti Each Total min. 3,0 3,0 1,5 0,3 Base max. 5,0 5,0 2,5 0,7 0,25 0,03 0,012 5 0,20 0,08 0,10
23、 0,40 3 Method of melting Quality Grade 2 according to EN 4800-005 4.1 Form Forgings 4.2 Method of production Forged from forging stock EN 4800-005 4.3 Limit dimension(s) mm De 150 5 Technical specification EN 4800-006 6.1 Delivery condition Solution treated and aged Heat treatment 880 C 920 C/t 20
24、min/AC 490 C 510 C/t = 24 h/AC 6.2 Delivery condition code U a 7 Use condition Delivery condition Heat treatment Characteristics 8.1 Test sample(s) See EN 4800-006. 8.2 Test piece(s) See EN 4800-006. 8.3 Heat treatment Use condition 9 Dimensions concerned mm De 100 100 De 150 10 Thickness of claddin
25、g on each face % 11 Direction of test piece See EN 4800-006. 12 T Temperature C Ambient 13 Proof stress Rp0,2 MPa 920 870 14 Strength Rm MPa 1 050 Rm 1 220 1 000 Rm 1 220 15 Elongation A % 9 9 16 Reduction of area Z % 20 20 17 Hardness 18 Shear strength Rc MPa 19 Bending k 20 Impact strength 21 C Te
26、mperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress R MPa 26 Elongation at rupture A % 27 Notes (see line 98) a BS EN 3351:2012EN 3351:2012 (E) 7 30 Microstructure See EN 4800-006. 7 Microstructure shall be resulting from processing in the alpha beta phase field. It shall consi
27、st of equiaxed and/or elongated primary alpha in a transformed beta matrix with no continuous network of alpha at prior grain boundaries. A microstructure showing a continuous network of alpha at prior beta grains boundaries is not acceptable 44 External defects See EN 4800-006. 51 Macrostructure Se
28、e EN 4800-006. 7 detection of any of the following will be cause for rejection: porosity, beta segregation, evidence of overheating, unsealed ingot cavity, cracks or laps, hard alpha defects or dense metal inclusions 1 EN 2954-002 7 a or Demm Maximum acceptable macrostructure Not acceptable macrostr
29、ucture Macrostructure submitted for approval 50 a or D 110 2 MA 3 2 MA 80 to 2 MA 84 and 2 MA 100 2 MA 40 to 2 MA 42and 2 MA 60 to 2 MA 62 61 Internal defects See EN 4800-006. 2 Pre-production part unless otherwise specified 3 See inspection schedule. 82 Batch uniformity (Material verification) See
30、EN 4800-006.95 Marking inspection See EN 4800-006. 96 Dimensional inspection See EN 4800-006. 98 Notes aAccording to EN 2032-2. 99 Typical use BS EN 3351:2012EN 3351:2012 (E) 8 100 Product qualification Qualification programme to be agreed between manufacturer and purchaser. This page deliberately l
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