1、June 2008DEUTSCHE NORM English price group 8No 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!$O+V“1440851www.
2、din.deDDIN EN 754-4Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 4: Square bars, tolerances on dimensions and formEnglish version of DIN EN 754-4:2008-06Aluminium und Aluminiumlegierungen Gezogene Stangen und Rohre Teil 4: Vierkantstangen, Grenzabmae und FormtoleranzenEnglische Fas
3、sung DIN EN 754-4:2008-06SupersedesDIN EN 754-4:1996-01www.beuth.deDocument comprises 11 pagesDIN EN 754-4:2008-06 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 dra
4、wn 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 754-4:1996-01 as
5、 follows: a) The standard has been editorially revised to bring this part in line with the other parts of EN 754. Previous editions DIN 1796: 1937-06, 1943-03, 1954-06, 1968-02, 1986-09 DIN EN 754-4: 1996-01 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 754-4March 2008ICS 77.150.10 Supersedes EN
6、 754-4:1995 English VersionAluminium and aluminium alloys - Cold drawn rod/bar and tube -Part 4: Square bars, tolerances on dimensions and formAluminium et alliages daluminium - Barres et tubes tirs -Partie 4: Barres carres, tolrances sur dimensions etformeAluminium und Aluminiumlegierungen - Gezoge
7、ne Stangenund Rohre - Teil 4: Vierkantstangen, 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 of a national
8、 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 version in any ot
9、her 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, Denmark, Estonia,
10、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 NORMALISATIONEUROPISCHES KO
11、MITEE 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 754-4:2008: EEN 754-4:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Tolerances on dimensions .4 2.1 Width ac
12、ross flats4 2.2 Corner radii.4 2.3 Length .5 2.4 Squareness of cut ends 5 3 Tolerance on form5 3.1 Straightness .5 3.2 Convexity - Concavity .6 3.3 Twist6 3.4 Squareness.7 Bibliography 9 DIN EN 754-4:2008-06 EN 754-4:2008 (E) 3 Foreword This document (EN 754-4:2008) has been prepared by Technical Co
13、mmittee 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 s
14、hall be withdrawn at the latest by September 2008. This document supersedes EN 754-4:1995. Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 5 “Extruded and drawn products“ to revise EN 754-4:1995. The following technical modifications have been introduced during t
15、he revision: 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 propert
16、ies 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: Por
17、thole 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 tha
18、t 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
19、 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, Slov
20、akia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 754-4:2008-06 EN 754-4:2008 (E) 4 1 Scope This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn square bars having widths across flats from 3 mm up to and including 100 mm.
21、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 Width across flats tolerances Dimensions in millimetres Width across flats S Over Up to and including Tolerances
22、 3 6 08,006 10 09,0010 18 11,0018 30 13,0030 50 16,0050 65 19,0065 80 30,0080 100 35,002.2 Corner radii Maximum corner radii are specified in Table 2. DIN EN 754-4:2008-06 EN 754-4:2008 (E) 5 Table 2 Maximum corner radii Dimensions in millimetres Width across flats S Over Up to and including Maximum
23、 corner radii 3 8 0,4 8 30 0,8 30 60 1,0 60 80 1,5 80 100 2,0 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 flats S Tolerances on
24、 length From Up to and including L 2 000 2 000 5 000 3 100 05+07+010+If no fixed or minimum length is specified in the order, square 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 cu
25、t 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 of10 0 +mm the squareness of cut ends shall be within 5 mm). 3 Tolerance on form 3.1 Straightness Deviations from straightness, h
26、sand ht,shall be measured as shown in Figure 1 with the square bar placed on a horizontal base plate so that its mass decreases the deviation. For square bars with width across flats equal or greater than 10 mm, the straightness tolerances are specified in Table 4. (The straightness tolerance htappl
27、ies to the whole length, e.g. for a length of 6 m the maximum deviation from straightness htis the value given in the table multiplied by 6 m). For square bars with width across flats less than 10 mm, the straightness tolerances shall be agreed upon between supplier and purchaser. DIN EN 754-4:2008-
28、06 EN 754-4:2008 (E) 6 The straightness tolerances apply to square 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 st
29、raightness Table 4 Straightness tolerances Dimensions in millimetres Width 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 100 2 0,6 3.2 Convexity - Concavity The convexity - concavity for s
30、quare bars 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 square bars with width across flats less than 10 mm, the twist tolerances shall be
31、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. DIN EN 754-4:2008-06 EN 754-4:2008 (E) 7 Key 1 base plate Figure 2 Measurement
32、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 1,0 3,0 30 60 1,5 3,5 60 100 2,0 4,0 3.4 Squareness The deviation from square shall be measured as shown in Figure 3. Square
33、ness tolerances are specified in Table 6. DIN EN 754-4:2008-06 EN 754-4:2008 (E) 8 Figure 3 Measurement of deviation from square Table 6 Squareness tolerances Dimensions in millimetres Width across flats S From Up to and including Maximum deviation from square Z 3 100 0,005 x width DIN EN 754-4:2008-06 EN 754-4:2008 (E) 9 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations DIN EN 754-4:2008-06
