1、BRITISH STANDARDBS EN 754-3:2008Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 3: Round bars, tolerances on dimensions and formICS 77.150.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55
2、g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 754-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 55596 1National forewordThis British Standard is the UK implementation of EN 754-3:2
3、008. It supersedes BS EN 754-3:1996 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys.A list of organizations represented on this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 purpor
4、t 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 publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 754
5、-3March 2008ICS 77.150.10 Supersedes EN 754-3:1995 English VersionAluminium and aluminium alloys - Cold drawn rod/bar and tube -Part 3: Round bars, tolerances on dimensions and formAluminium et alliages daluminium - Barres et tubes tirs -Partie 3: Barres rondes, tolrances sur dimensions etformeAlumi
6、nium und Aluminiumlegierungen - Gezogene Stangenund Rohre - Teil 3: Rundstangen, 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 Europea
7、nStandard the status of 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, Fr
8、ench, German). A version 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,
9、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 STANDARDIZATIONCOMIT EURO
10、PEN DE NORMALISATIONEUROPISCHES 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 754-3:2008: EEN 754-3:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Tolera
11、nces on dimensions .4 2.1 Diameter4 2.2 Length .4 2.3 Squareness of cut ends 5 3 Tolerances on form5 3.1 Ovality .5 3.2 Straightness .5 Bibliography 7 BS EN 754-3:2008EN 754-3:2008 (E) 3 Foreword This document (EN 754-3:2008) has been prepared by Technical Committee CEN/TC 132 “Aluminium and alumini
12、um 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 Septem
13、ber 2008. This document supersedes EN 754-3:1995. Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 5 “Extruded and drawn products“ to revise EN 754-3:1995. The following technical modifications have been introduced during the revision: Only editorial changes to br
14、ing 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 Part 3: Round bars, tolerances on dim
15、ensions 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
16、 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
17、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 imp
18、lement 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, Switzerlan
19、d and the United Kingdom. BS EN 754-3:2008EN 754-3:2008 (E) 4 1 Scope This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn round bars having diameters in the range from 3 mm up to and including 100 mm. The temper designations used in this part ar
20、e according to EN 515. 2 Tolerances on dimensions 2.1 Diameter The tolerances on diameter are specified in Table 1. Table 1 Diameter tolerances Dimensions in millimetres Diameter D Over Up to and including Tolerances 3 6 08,006 10 09,0010 18 11,0018 30 13,0030 50 16,0050 65 19,0065 80 30,0080 100 35
21、,002.2 Length If fixed lengths are to be supplied, this shall be stated in the order document. The fixed length tolerances are specified in Table 2. BS EN 754-3:2008EN 754-3:2008 (E) 5 Table 2 Fixed length tolerances Dimensions in millimetres Diameter D Tolerances on fixed length From Up to and incl
22、uding L 2 000 2 000 5 000 3 100 05+07+010+If no fixed or minimum length is specified in the order, round drawn bars may be delivered in random lengths. The actual lengths and tolerances on random lengths shall be agreed between supplier and purchaser. 2.3 Squareness of cut ends The squareness of cut
23、 ends shall be within half of the fixed length tolerance range (Table 2) 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 Tolerances on form 3.1 Ovality Ovality is the difference between the maximum and minimum diame
24、ters measured in one cross-section. The maximum permissible ovality is 50 % of the tolerance range specified in Table 1, (e.g. for a diameter tolerance of 0 0,08mm the maximum permissible ovality is 0,04 mm). 3.2 Straightness Deviations from straightness, hsand ht,shall be measured as shown in Figur
25、e 1 with the round bar placed on a horizontal base plate so that its mass decreases the deviation. The straightness tolerances are specified in Table 3. (The straightness tolerance htapplies to the whole length, e.g. for a length of 6 m the maximum deviation from straightness htis the value given in
26、 the table multiplied by 6 m). For round bars with diameter less than 10 mm, the straightness tolerances shall be agreed upon between supplier and purchaser. The straightness tolerances apply to round bars with a diameter greater than 10 mm in all tempers except O and Tx51. If a straightness toleran
27、ce is required for either O or Tx51 temper, it shall be agreed between supplier and purchaser. BS EN 754-3:2008EN 754-3:2008 (E) 6 Key 1 base plate 2 straight edge Figure 1 Measurement of deviation from straightness Table 3 Straightness tolerances Dimensions in millimetres Diameter D From Up to and
28、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 BS EN 754-3:2008EN 754-3:2008 (E) 7 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations BS EN 754-3:2008BS EN 754-3:2008BSI
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