untitled Li ce ns ed C op y M r U ni ve rs iti T ek no lo gi M al ay si a U se r, U ni ve rs iti T ek no lo gi M al ay si a, 1 4/ 07 /2 01 3 09 3 4, U nc on tr ol le d C op y, ( c) T he B rit is h S t[.]
Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 BRITISH STANDARD Aluminium and aluminium alloys — Cold drawn rod/bar and tube — Part 6: Hexagonal bars, tolerances on dimensions and form ICS 77.150.10 12&23 000 + 10 If no fixed or minimum length is specified in the order document, hexagonal drawn bars may be delivered in random lengths The actual lengths and tolerances on random lengths shall be agreed between supplier and purchaser 2.4 Squareness of cut ends The squareness of cut ends shall be within half of the fixed-length tolerance range (Table 3) for both fixed and random lengths, (e.g for a fixed length tolerance of 3.1 + 10 mm the squareness of cut ends shall be within mm) Tolerances on form Straightness Deviations from straightness, hs and ht, shall be measured as shown in Figure with the hexagonal bar placed on a horizontal base plate so that its mass decreases the deviation The straightness tolerances are specified in Table (The straightness tolerance ht applies to the whole length, e.g for a length of m the maximum deviation from straightness ht is the value given in the table multiplied by m) For hexagonal bars with width across flats less than 10 mm, the straightness tolerances shall be agreed upon between supplier and purchaser BS EN 754-6:2008 Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 EN 754-6:2008 (E) The straightness tolerances apply to hexagonal bars with width across flats 10 mm and greater 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 base plate straight edge Figure — Measurement of deviation from straightness Table — Straightness tolerances Dimensions in millimetres With across flats S 3.2 From Up to and including 10 80 Maximum deviation from straightness per metre length ht/length mm/m Maximum localized kink in any 300 mm portion hs 0,6 Convexity - Concavity The convexity - concavity tolerances for hexagonal bar shall be included within the width across flats tolerances as given in Table 3.3 Twist The twist measurement shall be carried out as shown in Figure The twist tolerances are specified in Table For bars with width across flats less than 10 mm, the twist tolerances shall be agreed between supplier and purchaser The twist tolerances apply to bars with width across flats 10 mm and greater 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 754-6:2008 Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 EN 754-6:2008 (E) Key base plate Figure — Measurement of twist Table — Twist tolerances Dimensions in millimetres Width across flats S Twist tolerances T Over Up to and including per 000 mm of length over the total length ≥ 10 30 30 80 1,5 2,5 Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 BS EN 754-6:2008 EN 754-6:2008 (E) Bibliography [1] EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations blank Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 Licensed Copy: Mr Universiti Teknologi Malaysia User, Universiti Teknologi Malaysia, 14/07/2013 09:34, Uncontrolled Copy, (c) The British Standards Institution 2013 BS EN 754-6:2008 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 We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsi-global.com Standards are also available from the BSI website at http://www.bsi-global.com In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsi-global.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsi-global.com Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline Further information about BSI is available on the BSI website at http://www.bsi-global.com Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI BSI 389 Chiswick High Road London W4 4AL This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Fax: +44 (0)20 8996 7553 Email: copyright@bsi-global.com