1、BRITISH STANDARD AEROSPACE SERIES BS EN 2731:2005 Magnesium alloy MG-C46001 T6 Sand casting The European Standard EN 2731:2005 has the status of a British Standard ICS 49.025.15 BS EN 2731:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on
2、13 December 2005 BSI 13 December 2005 ISBN 0 580 46298 6 National foreword This British Standard is the official English language version of EN 2731:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Subcommittee A
3、CE/61/-/24, Light alloys, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European develo
4、pments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue und
5、er the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct app
6、lication. 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, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when
7、the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN2731 August2005 ICS49.025.15 EnglishVersion AerospaceseriesMagnesiumalloyMGC46001T6Sand casting SriearospatialeAlliagedemagnsiumMGC46001 T6Produitcoulensable Luftu
8、ndRaumfahrtMagnesiumlegierungMGC46001 T6Sandgustck ThisEuropeanStandardwasapprovedbyCENon22April2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographi
9、calreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheC
10、entralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Sloveni
11、a,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN2731:2005:E2 C
12、ontents Foreword 3 Introduction4 1 Scope .4 2 Normative references .4 EN 2731:20053 Foreword This document (EN 2731:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of thi
13、s Association, this Standard has 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
14、endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible fo
15、r identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
16、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2731:20054 Introduction This standard is part of the series of EN metallic material standards for aerospace applic
17、ations. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Magnesium alloy MG-C46001 T6 Sand casting for aerospace applications. 2 Normative references The follow
18、ing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2076-3, Aerospace series Aluminium and magnesium alloy i
19、ngots and castings Technical specification Part 3: Pre-production and production castings EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use. EN 4500-2, Aerospace series Metallic materials Rules for drafting and pres
20、entation of material standards Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys. 1) 1) Published as AECMA Prestandard at the date of publication of this standard. EN 2731:20055 1 Material designation Magnesium alloy MG C46001 aOthers Element Ag Cu Fe Mn Ni Rear Earth Si Zn
21、 Zr Each Total Mg min. 2,0 1,8 0,40 2 Chemical composition % max. 3,0 0,03 0,01 0,15 0,005 3,0 0,01 0,20 1,0 0,05 0,20 Base 3 Method of melting 4.1 Form Sand casting 4.2 Method of production Sand casting 4.3 Limit dimension(s) mm 5 Technical specification EN 2076-3 Delivery condition T6 6.1 Heat tre
22、atment 510 C 545 C / 4 h t 8 h / WQ 60 C 80 C b+ 195 C 205 C / 8 h t 16 h / Air cool 6.2 Delivery condition code U Use condition T6 7 Heat treatment Delivery condition Characteristics 8.1 Test sample(s) Separately cast Cut-up, undesignated location, gated or integral Cut-up, designated location 8.2
23、Test piece(s) See EN 2076-3. See EN 2076-3. See EN 2076-3. 8.3 Heat treatment Use condition. Use condition. Use condition. 9 Dimensions concerned mm See EN 2076-3. a 20 a 20 10 Thickness of cladding on each face % 11 Direction of test piece 12 Temperature C Ambient Ambient Ambient 13 Proof stress R
24、p0,2 MPa 185 140 c 175 c14 Strength R mMPa 240 200 c 240 c15 Elongation A % 2 1 c 2 c16 T Reduction of area Z % 17 Hardness 18 Shear strength R cMPa 19 Bending k 20 Impact strength 21 Temperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress RMPa 26 C Elongation at rupture A % 27 N
25、otes (see line 98) a, b, c EN 2731:20056 44 External defects See EN 2076-3. 61 Internal defects See EN 2076-3. 82 Batch uniformity See EN 2076-3. 70 (Typical value) 7 Hardness HB 20 per batch 95 Marking inspection See EN 2076-3. 96 Dimensional inspection See EN 2076-3. 98 Notes a Similar to alloys M
26、SR-B and QE22A b Unless otherwise advised by the purchaser, the manufacturer may, at his discretion, and especially to minimize distortion in thin sections, alternatively air cool to ambient temperature from the solution heat treatment temperature or use water with quench additives (polymer quench)
27、at 30 C. cThe tensile properties stated may not be consistently achievable in all parts of all castings. Any differing requirements stated on the drawing shall take precedence over those of this material standard. 99 Typical use EN 2731:20057 100 Product qualification See EN 2076-3. Qualification pr
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