1、June 2008DEUTSCHE NORM English price group 7No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.150.10!$O2“1441556www.d
2、in.deDDIN EN 754-6Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 6: Hexagonal bars, tolerances on dimensions and formEnglish version of DIN EN 754-6:2008-06Aluminium und Aluminiumlegierungen Gezogene Stangen und Rohre Teil 6: Sechskantstangen, Grenzabmae und FormtoleranzenEnglische
3、Fassung DIN EN 754-6:2008-06SupersedesDIN EN 754-6:1996-01www.beuth.deDocument comprises 10 pagesDIN EN 754-6:2008-06 2 National foreword This standard has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” (Secretariat: AFNOR, France), Working Group WG 5 “Extruded and
4、drawn products” (Secretariat: SN, Norway). The responsible German body involved in its preparation was the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committee), Technical Committee NA 066-01-04 AA Strangpresserzeugnisse. Amendments This standard differs from DIN EN 754-6:1996-01
5、 as follows: a) The standard has been editorially revised to bring this part in line with the other parts of EN 754. Previous editions DIN 1797: 1937-06, 1942-08, 1954-06, 1968-02, 1986-09 DIN EN 754-6: 1996-01 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 754-6March 2008ICS 77.150.10 Supersedes
6、 EN 754-6:1995 English VersionAluminium and aluminium alloys - Cold drawn rod/bar and tube -Part 6: Hexagonal bars, tolerances on dimensions and formAluminium et alliages daluminium - Barres et tubes tirs -Partie 6: Barres hexagonales, tolrances sur dimensions etformeAluminium und Aluminiumlegierung
7、en - Gezogene Stangenund Rohre - Teil 6: Sechskantstangen, Grenzabmae undFormtoleranzenThis 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 EuropeanStandard the status o
8、f a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 versi
9、on in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmar
10、k, 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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEU
11、ROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 754-6:2008: EEN 754-6:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Tolerances on dimensions .4
12、2.1 Width across flats4 2.2 Corner radii.4 2.3 Length .5 2.4 Squareness of cut ends 5 3 Tolerances on form5 3.1 Straightness .5 3.2 Convexity - Concavity .6 3.3 Twist6 Bibliography 8 DIN EN 754-6:2008-06 EN 754-6:2008 (E) 3 Foreword This document (EN 754-6:2008) has been prepared by Technical Commit
13、tee 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
14、 be withdrawn at the latest by September 2008. This document supersedes EN 754-6:1995. Within its programme of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 5 “Extruded and drawn products“ to revise EN 754-6:1995 The following technical modifications have been introduced during the re
15、vision: Only editorial changes to bring this part in line with the other parts of EN 754 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
16、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: Porthol
17、e 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
18、 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
19、 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
20、, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 754-6:2008-06 EN 754-6:2008 (E) 4 1 Scope This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn hexagonal bars having widths across flats in the range from 3 mm up to and includ
21、ing 80 mm. The temper designations used in this part are according to EN 515. 2 Tolerances on dimensions 2.1 Width across flats The tolerances on width across flats are specified in Table 1. Table 1 Tolerances on width across flats Dimensions in millimetres Width across flats S Over Up to and includ
22、ing Tolerances 3 6 0 - 0,08 6 10 0 - 0,09 10 18 0 - 0,11 18 30 0 - 0,13 30 50 0 - 0,16 50 65 0 - 0,19 65 80 0 - 0,30 2.2 Corner radii Maximum corner radii are specified in Table 2. DIN EN 754-6:2008-06 EN 754-6:2008 (E) 5 Table 2 Maximum corner radii Dimensions in millimetres Width across flats S Ov
23、er Up to and including Maximum corner radii 3 8 0,2 8 30 0,4 30 60 0,6 60 80 0,8 2.3 Length If fixed lengths are to be supplied, this shall be stated in the order document. The fixed length tolerances are specified in Table 3. Table 3 Fixed length tolerances Dimensions in millimetres Width across fl
24、ats S Tolerances on length From Up to and including L 2 000 2 000 5 000 3 80 05+07+010+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 p
25、urchaser. 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 10 0 +mm the squareness of cut ends shall be within 5 mm). 3 Tolerances on form 3.1 Straightness
26、 Deviations from straightness, hsand ht,shall be measured as shown in Figure 1 with the hexagonal bar placed on a horizontal base plate so that its mass decreases the deviation. The straightness tolerances are specified in Table 4. (The straightness tolerance htapplies to the whole length, e.g. for
27、a length of 6 m the maximum deviation from straightness htis the value given in the table multiplied by 6 m). For hexagonal bars with width across flats less than 10 mm, the straightness tolerances shall be agreed upon between supplier and purchaser. DIN EN 754-6:2008-06 EN 754-6:2008 (E) 6 The stra
28、ightness 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 1 base plate 2 straight edge Figure 1 Measurement of dev
29、iation from straightness Table 4 Straightness tolerances Dimensions in millimetres With across flats S From Up to and including Maximum deviation from straightness per metre length ht/length mm/m Maximum localized kink in any 300 mm portion hs10 80 2 0,6 3.2 Convexity - Concavity The convexity - con
30、cavity tolerances for hexagonal bar shall be included within the width across flats tolerances as given in Table 1. 3.3 Twist The twist measurement shall be carried out as shown in Figure 2. The twist tolerances are specified in Table 5. For bars with width across flats less than 10 mm, the twist to
31、lerances 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. DIN EN 754-6:2008-0
32、6 EN 754-6:2008 (E) 7 Key 1 base plate Figure 2 Measurement of twist Table 5 Twist tolerances Dimensions in millimetres Width across flats S Twist tolerances T Over Up to and including per 1 000 mm of length over the total length 10 30 1 2 30 80 1,5 2,5 DIN EN 754-6:2008-06 EN 754-6:2008 (E) 8 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations DIN EN 754-6:2008-06
