1、BRITISH STANDARD AEROSPACE SERIES BS EN 4291:2005 Aluminium alloy AL-P8090 Forging stock The European Standard EN 4291:2005 has the status of a British Standard ICS 49.025.20 BS EN 4291:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 6 O
2、ctober 2005 BSI 6 October 2005 ISBN 0 580 46318 4 National foreword This British Standard is the official English language version of EN 4291:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Subcommittee ACE/61/-
3、/24, Light alloys, which has the responsibility to: 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
4、 Catalogue under 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 i
5、ts correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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
6、informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document
7、indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN4291 June2005 ICS49.025.20 Englishversion AerospaceseriesAluminiumalloyALP8090Forgingstock SriearospatialeAlliagedaluminiumALP8090 Produitsdestinsla
8、forge LuftundRaumfahrtAluminiumlegierungALP8090 Schmiedevormaterial ThisEuropeanStandardwasapprovedbyCENon22April2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelis
9、tsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguage
10、andnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,
11、Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No
12、.EN4291:2005:EEN 4291:2005 2 Foreword This document (EN 4291:2005) 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 this Association, this Standard has received the approval
13、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 December 2005, and confli
14、cting national standards shall be withdrawn at the latest by December 2005. 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 for identifying any or all such patent rights. According
15、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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L
16、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4291:2005 3 Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is des
17、cribed in EN 4258. This standard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Aluminium alloy AL-P8090- Forging stock for aerospace application. 2 Normative references The following referenced documents are indispensable for the applic
18、ation 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 2082-2, Aerospace series Aluminium alloy forging stock and forgings Technical specification Part 2: Forging stock
19、. 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 presentation of material standards Part 2: Specific rules for aluminium, aluminium alloys an
20、d magnesium alloys. 1)EN 6018, Aerospace series Test methods for metallic materials Determination of density according to displacement method. 1) 1) Published as AECMA Prestandard at the date of publication of this standard. 4 1 Material designation Aluminium alloy AL-P8090- Others Element Si Fe Cu
21、Mn Mg Cr Zn Li Zr Ti Each Total Al min. 1,0 0,6 2,2 0,04 2 Chemical composition % max. 0,20a0,30a1,6 0,10 1,3 0,10 0,25 2,7 0,16 0,10 0,05a0,15 Base 3 Method of melting 4.1 Form Ingot or billet 4.2 Method of production Cast 4.3 Limit dimension(s) mm a or D 500 5 Technical specification EN 2082-2 Del
22、ivery condition O3 6.1 Heat treatment 6.2 Delivery condition code U Use condition O3 7 Heat treatment Delivery condition Characteristics 8.1 Test sample(s) Forged bar b8.2 Test piece(s) See EN 2082-2. 8.3 Heat treatment T89 (See line 29) 9 Dimensions concerned mm 10 Thickness of cladding on each fac
23、e % 11 Direction of test piece L LT ST 12 Temperature C Ambient Ambient Ambient 13 Proof stress R p0,2 MPa 330 c 305 c 300 c14 Strength R mMPa 430 c 420 c 380 c15 Elongation A % 3 c 3 c 1 c16 T Reduction of area Z % 17 Hardness 18 Shear strength R cMPa 19 Bending k 20 Impact strength 21 Temperature
24、C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress R MPa 26 C Elongation at rupture A % 27 Notes (see line 98) a, b, c EN 4291:2005 5 29 Reference heat treatment Delivery condition + hand forged + 525 C 535 C / WQ 35 C + 2 % cold deformed 5 % + 170 C 185 C / 20 h t 30 h 34 Grain size G
25、0,5 44 External defects See EN 2082-2. 61 Internal defects See EN 2082-2. 68 Density 1EN 6018 2The “capability clause“ applies 7 2,56 kg/dm 395 Marking inspection See EN 2082-2. 96 Dimensional inspection See EN 2082-2. 98 Notes a Chemical analyses taken from the molten metal stream shall exhibit the
26、 following maximum impurity levels: Fe 0,06 %, Si 0,06 %, Na 9 ppm., Ca 120 ppm. b Forging dimensions and manufacturing parameters shall be as agreed between ingot supplier and forgemaster. c The “capability clause“ applies. 99 Typical use EN 4291:2005 6 100 Product qualification Qualification progr
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