BS-EN-754-5-2008.pdf

BRITISH STANDARD BS EN 754-5:2008 Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 5: Rectangular bars, tolerances on dimensions and form ICS 77.150.10 ? BS EN 754-5:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 © BSI 2008 ISBN 978 0 580 55598 5 National foreword This British Standard is the UK implementation of EN 754-5:2008. It supersedes BS EN 754-5:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys. A list of organizations represented on this committee 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. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 754-5 March 2008 ICS 77.150.10Supersedes EN 754-5:1995 English Version Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 5: Rectangular bars, tolerances on dimensions and form Aluminium et alliages d'aluminium - Barres et tubes étirés - Partie 5: Barres rectangulaires, tolérances sur dimensions et forme Aluminium und Aluminiumlegierungen - Gezogene Stangen und Rohre - Teil 5: Rechteckstangen, Grenzabmaße und Formtoleranzen This European Standard was approved by CEN on 10 February 2008. 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 CEN Management Centre 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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 754-5:2008: E EN 754-5:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Alloy groups.4 3 Tolerances on dimensions .4 3.1 Thickness and width .4 3.2 Corner radii.6 3.3 Length.6 3.4 Squareness of cut ends 6 4 Tolerances on form6 4.1 Straightness.6 4.2 Convexity - Concavity .7 4.3 Twist8 4.4 Squareness.9 Bibliography11 BS EN 754-5:2008 EN 754-5:2008 (E) 3 Foreword This document (EN 754-5:2008) has been prepared by Technical Committee CEN/TC 132 “Aluminium 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 September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. This document supersedes EN 754-5:1995. Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 5 “Extruded and drawn products“ to revise EN 754-5:1995. The following technical modifications have been introduced during the revision: Clause 2: Alloy EN AW-6262A and EN AW 6065 are added in Group I Clause 2: Alloy EN AW-5049 is added in Group II EN 754 comprises the following parts under the general title “Aluminium and aluminium alloys Cold drawn rod/bar and tube“: Part 1: Technical conditions for inspection and delivery Part 2: Mechanical properties Part 3: Round bars, tolerances on dimensions and form Part 4: Square bars, tolerances on dimensions and form Part 5: Rectangular bars, tolerances on dimensions and form Part 6: Hexagonal bars, tolerances on dimensions and form Part 7: Seamless tubes, tolerances on dimensions and form Part 8: Porthole tubes, tolerances on dimensions and form 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. CEN/TC 132 affirms it is its policy that in the case when a patentee refuses to grant licenses on standardized standards products under reasonable and not discriminatory conditions then this product shall be removed from the corresponding standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 754-5:2008 EN 754-5:2008 (E) 4 1 Scope This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn rectangular bars having thicknesses in the range from 2 mm up to and including 60 mm and widths in the range from 5 mm up to and including 200 mm. The temper designations used in this part are according to EN 515. 2 Alloy groups The division into group I and group II of the most commonly used general engineering alloys is specified in Table 1. Grouping of other alloys is subject to agreement between supplier and purchaser. Table 1 Alloy groups Group I EN AW-1050A, EN AW-1200 EN AW-3003, EN AW-3103 EN AW-5005, EN AW-5005A, EN AW-5251 EN AW-6012, EN AW-6060, EN AW-6061, EN AW-6262, EN AW-6262A, EN AW-6063, EN AW-6063A, EN AW-6065 EN AW-6082 EN AW-2007, EN AW-2011, EN AW-2011A, EN AW-2014, EN AW-2014A, EN AW-2017A, EN AW-2024, EN AW-2030 EN AW-5019, EN AW-5049, EN AW-5052, EN AW-5154A, EN AW-5754, EN AW-5083, EN AW-5086 Group II EN AW-7020, EN AW-7022, EN AW-7049A, EN AW-7075 3 Tolerances on dimensions 3.1 Thickness and width The tolerances on thickness and width are specified in Tables 2 and 3. For the purpose of this document the alloys are distributed into two groups which correspond to varying difficulty when manufacturing the products. The division into group I and group II of the most commonly used general engineering alloys is specified in Table 1. BS EN 754-5:2008 EN 754-5:2008 (E) 5 Table 2 Width and thickness tolerances for alloy group I Dimensions in millimetres Width W Thickness tolerances for thickness range t Over Up to and including Tolerances 2 t 6 6 5 000 5 100 0 5+ 0 7+ 0 10+ 100 200 0 7+ 0 9+ 0 12+ If no fixed or minimum length is specified in the order document, rectangular drawn bars may be delivered in random lengths. The actual lengths and tolerances on random lengths shall be agreed between supplier and purchaser. 3.4 Squareness of cut ends The squareness of cut ends shall be within half of the fixed-length tolerance range (Table 5) for both fixed and random lengths, (e.g. for a fixed length tolerance of 10 0 + mm the squareness of cut ends shall be within 5 mm). 4 Tolerances on form 4.1 Straightness Deviations from straightness, hs and ht, shall be measured as shown in Figure 1 with the rectangular bar placed on a horizontal base plate so that its mass decreases the deviation. BS EN 754-5:2008 EN 754-5:2008 (E) 7 For rectangular bars with thickness equal to or greater than 6 mm, the straightness tolerances are specified in Table 6. (The straightness tolerance ht applies to the whole length, e.g. for a length of 6 m the maximum deviation from straightness ht is the value given in the table multiplied by 6 m). For rectangular bars with thickness less than 6 mm, the straightness tolerances shall be agreed upon between supplier and purchaser. The straightness tolerances apply to rectangular bars in all tempers except O and Tx51. If a straightness tolerance is required for either O or Tx51 temper, it shall be agreed between supplier and purchaser. Key 1 base plate 2 straight edge Figure 1 Measurement of deviation from straightness Table 6 Straightness tolerances Dimensions in millimetres With W Thickness t Over Up to and including Over Up to and including Maximum deviation from straightness per metre length ht/length mm/m Maximum localized kink in any 300 mm portion hs 6 40 2 0,6 6 120 40 60 3 1,0 6 40 3 1,0 120 200 40 60 4 1,5 4.2 Convexity - Concavity The convexity - concavity shall be measured as shown in Figure 2. The tolerances are specified in Table 7. BS EN 754-5:2008 EN 754-5:2008 (E) 8 Key 1 base plate Figure 2 Measurement of deviation from flatness Table 7 Convexity - Concavity tolerances Dimensions in millimetres Width W Over Up to and including Flatness tolerances f 5 30 0,10 30 50 0,15 50 80 0,20 80 120 0,30 120 200 0,50 4.3 Twist The twist measurement shall be carried out as shown in Figure 3. The twist tolerances are specified in Table 8. For rectangular bars with width less than 10 mm, the twist tolerances shall be agreed between supplier and purchaser. The twist tolerances apply to bars in all tempers except O and Tx51. If a twist tolerance is required for either O or Tx51 temper, it shall be agreed between supplier and purchaser. BS EN 754-5:2008 EN 754-5:2008 (E) 9 Key 1 base plate Figure 3 Measurement of twist Table 8 Twist tolerances Dimensions in millimetres With W Twist tolerances T Over Up to and including per 1 000 mm of length over the total length 10 30 1,0 3 30 50 1,5 4 50 120 2,0 5 120 200 3,0 8 4.4 Squareness The deviation from square shall be measured as shown in Figure 4. Squareness tolerances are specified in Table 9. BS EN 754-5:2008 EN 754-5:2008 (E) 10 Figure 4 Measurement of deviation from square Table 9 Squareness tolerances Dimensions in millimetres Thickness t From Up to and including Maximum deviation from square Z 2 60 0,005 x thickness t BS EN 754-5:2008 EN 754-5:2008 (E) 11 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations BS EN 754-5:2008 BS EN 754-5:2008 BSI 389 Chiswick High Road London W4 4AL 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. 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