Vervangt NEN-EN 755-8:1995 Ontw. Nederlandse norm. NEN-EN (en)

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1 Vervangt NEN-EN 55-8:1995 Ontw Dit document mag slechts op een stand-alone PC worden geinstalleerd. Gebruik op een netwerk is alleen. toestaan als een aanvullende licentieovereenkomst voor netwerkgebruik met NEN is afgesloten. This document may only be used on a stand-alone PC. Use in a network is only permitted when a supplementary license agreement for us in a network with NEN has been concluded. Nederlandse norm NEN-EN 55-8 (en) Aluminium en aluminiumlegeringen - Geëxtrudeerde staven, buizen en profielen - Deel 8: Met bruggereedschap geëxtrudeerde buizen, toleranties op afmetingen en vorm Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 8: Porthole tubes, tolerances on dimensions and form ICS ; november 1998

2 NEN-EN 55-8 Als Nederlandse norm is aanvaard: -EN55-8:1998,IDT Normcommissie 42 0 "Aluminium" Apart from exceptions provided by the law, nothing from this publication may be duplicated and/or published by means of photocopy, microfilm, storage in computer files or otherwise, which also applies to full or partial processing, without, the wntten consent of the Netherlands Standards Institute The Netherlands Standards Institute shall with the exclusion of any other beneficiary collect payments owed by third parties for duplication and/or act in and out of law, where this authority is not transferred or falls by nght to the Reproduction rights Foundation Auteursrecht voorbehouden. Behoudens uitzondering door de wet gesteld mag zonder schnftelijke toestemming van het Nederlands Normalisatie-Instituut niets uit deze uitgave worden verveelvoudigd en/of openbaar gemaakt door middel van fotokopie, microfilm, opslag In computerbestanden of anderszijns, hetgeen ook van toepassing is op gehele of gedeeltelijke bewerking Het Nederlands Normalisatie-instituut is met uitsluiting van leder ander gerechtigd de door derden verschuldigde vergoedingen voor verveelvoudiging te innen en/of daartoe in en buiten rechte op te treden, voor zover deze bevoegdheid niet is overgedragen e.g. rechtens toekomt aan de Stichting Reprorecht, Although the utmost care has been taken with this publication, errors and omissions cannot be entirely excluded The Netherlands Standards Institute and/or the members of the commissions therefore accept no liability, not even for direct or indirect damage, occurnng due to or In relation with the application of publications put out by the Netherlands Standards Institute Hoewel bij deze uitgave de uiterste zorg is nagestreefd, kunnen fouten en onvolledigheden niet geheel worden uitgesloten Het Nederlands Normalisatie-instituut en/of de leden van de commissies aanvaarden derhalve geen enkele aansprakelijkheid, ook niet voor directe of Indirecte schade, onstaan door of verband houdende met toepassing van door het Nederlands Normalisatie-instituut gepubliceerde uitgaven Nederlands Normalisatie-instituut Nederlands Norniallsatle-lnstituut Kalfjeslaan 2, Postbus 5059, 2600 GB Delft Telefoon (015) , Fax (015)

3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 55-8 July 1998 ICS Descriptors- aluminium, aluminium alloys, extruded products, alumimum tubes, tolerances on dimension, tolerances on form English version Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 8: Porthole tubes, tolerances on dimensions and form Alurninium et alliages d'alurnirüum Barres, tubes et profilés filés Partie 8: Tubes filés à pont, tolérances sur dimensions et forme Aluminium und Aluminiumlegierungen Stanggepreßte Stangen, Rohre und Profile Teil 8: Mit Kammerwerkzeug stanggepreßte Rohre, Grenzabmaße und Formtoleranzen This European Standard was approved by CEN on l July 1998 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, Czech Republic, 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 6, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 55-8:1998 E

4 Page 2 EN 55-8:1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 12, Alunünium and aluminium alloys, the Secretariat of which is held by AFNOR. 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 January 1999, and conflicting national standards shall be withdrawn at the latest by January According to the CEN/CENELEC Intemal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is part of a series of nine standards. The other standards deal with: EN 55-1, Aluminium and aluminium alloys Extruded rodjbar, tube and profiles Part 1: Technical conditions for inspection and delivery. EN 55-2, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 2: Mechanical properties. EN 55-, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part : Round bars, tolerances on dimensions and form. EN 55-4, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 4: Square bars, tolerances on dimensions and form. EN 55-5, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 5: Rectangvlar bars, tolerances on dimensions and form. EN 55-6, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 6: Hexagonal bars, tolerances on dimensions and form. EN 55-, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part : Seamless tubes, tolerances on dimensions and form. EN 55-9, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 9: Profiles, tolerances on dimensions and form. Contents Foreword 1 Scope 2 Tolerances on dimensions 2.1 General 2.2 Diameter round tube 2. Width, depth or width across flats squares, rectangles, hexagons, octagons 2.4 Wall thickness 2.5 Length 2.6 Squareness of cut ends Tolerances on form.1 General.2 Straightness. Convexity-concavity.4 Twist.5 Angularity.6 Comer and fillet radii. Depth of dents for round tube Page

5 Fage EN 55-8: Scope This part of EN 55 specifies the tolerances on dimensions and form for aluminium and aluminium alloy extruded porthole tubes with an outside diameter (OD) from 8 mm to 450 mm (round tube, see Figure 1) or with a cross section contained within a circumscribing circle (CD) from 10 mm to 50 mm (other than round tube, see Figure 2), supplied in straight lengths. Ulis standard applies only to extruded porthole tube for general engineering applications made in the following alloys ENAW-1050A, ENAW-1200, EN AW-150 EN AW-00, EN AW-10 ENAW-5005, ENAW-5005A, ENAW-5051A, ENAW-5251, EN AW-5052 ENAW-6101A, ENAW-6101B, ENAW-6005, EN AW-6005A, EN AW-6012, EN AW-6018 EN AW-651, EN AW-6060, EN AW-6061, EN AW-6261, ENAW^6262 EN AW-606, EN AW-606A, EN AW-646, EN AW-6081, ENAW-6082 ENAW-00, EN AW-005, ENAW-020 This standard applies only to tube produced by the tube porthole/bridge method. This standard does not apply to extruded tube produced by the seamless, die/mandrel method or coiled tube. ^ZZZZZZEZZZZZZ * - «= / l\ izzzzzezzzzzy/ CD Figure 2 Circumscribing circle for other than round tube 2 Tolerances on dimensions 2.1 General When outside diameter OD, inside diameter ID, and wall thickness t (or their equivalent dimensions in other than round tube) are all specified, standard tolerances shall apply to any two of these dimensions, but not to all three. As a result, the purchaser shall state only two nominal dimensions on any given order. 2.2 Diameter round tube Mean diameter is defined as the average of two diameter measurements taken at right angles to each other at any point along the length. The tolerances on diameter are specified in Table Width, depth or width across flats squares, rectangles, hexagons, octagons The tolerances on width, depth or width across flats are specified m Table 2.

6 Page 4 EN 55-8:1998 Diameter (OD or /D) 2: Over Up to and including Table 1 Tolerances on diameter for round tube Maximum allowable deviation of mean diameter from specified diameter 6 ) ±0,26 5 ) ±0,0 ±0,5 ±0,40 ±0,60 ±0,90 ±1,4 ±1,9 Tolerance on diameter Dimensions in millimetres Maximum allowable deviation of diameter at any point from specified diameter 1 ) Non-annealed and non heat treated tube 2 > ±0,40«±0,50 ±0,60 ±0,0 ±0,90 ±1,4 ±1,9 ±2,8 Heat treated tube ) ±0,60«±0,0 ±0,90 ±1,1 ±1,4 ±2,0 ±,0 ±4,0 Annealed tube 4 ' ±1,5«1J Not applicable to tubes having a wall thickness less than 2,6 % of the specified outside diameter The tolerance for tubes with wall thickness less than 2,6 % of the specified outside diameter shall be determined by multiplying the applicable tolerance as follows: wall thickness over 2,0 % up to and including 2,5 % of outside diameter' 1,5 x tolerance, wall thickness over 1,5 96 up to and including 2,0 % of outside diameter 2,0 x tolerance, wall thickness over 1,0 % up to and mcluding 1,5 % of outside diameter.,0 x tolerance, wall thickness over 0,5 % up to and including 1,0 % of outside diameter 4,0 x tolerance 2 ) Applies to all alloys in F or HI 12 tempers ) Applies to all alloys m T4, T5,TC,TC4, T66 and Tx511 tempers. 4 ) Applies to all alloys m 0, Hill and Tx510 tempers 6) This tolerance applies for outside diameter only, Le tube in this size range can only be specified as "Outside Diameter x Wall Thickness". 6 > Not applicable to Tx510 or Tx511 tempers ±1,8 ±2,2 ±2,6 ±,6 ±5,0 ±,6 ±10,0

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