1、October 2016 English price group 11No part of this translation 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!%nb“2577563www.din.deD
2、IN EN 754-7Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 7: Seamless tubes, tolerances on dimensions and form;English version EN 7547:2016,English translation of DIN EN 754-7:2016-10Aluminium und Aluminiumlegierungen Gezogene Stangen und Rohre Teil 7: Nahtlose Rohre, Grenzabmae und
3、 Formtoleranzen;Englische Fassung EN 7547:2016,Englische bersetzung von DIN EN 754-7:2016-10Aluminium et alliages daluminium Barres et tubes tirs Partie 7: Tubes fils sur aiguille, tolrances sur dimensions et forme;Version anglaise EN 7547:2016,Traduction anglaise de DIN EN 754-7:2016-10SupersedesDI
4、N EN 7547:200806www.beuth.deDocument comprises 18 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.16 DIN EN 754-7:2016-10 2 A comma is used as the decimal marker. National foreword This document (EN 754-7:2016) has been prep
5、ared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” (Secretariat: AFNOR, France), Working Group WG 5 “Extruded and drawn products” (Secretariat: SN, Norway). The responsible German body involved in its preparation was DIN-Normenausschuss Nichteisenmetalle (DIN Standards Committee
6、 Nonferrous Metals), Working Committee NA 066-01-04 AA Strangpresserzeugnisse. Amendments This standard differs from DIN EN 754-7:2008-06 as follows: a) a new Clause 2 “Normative references” has been included and the numbers following have been updated accordingly; b) in Subclause 3.2 “Diameter Roun
7、d tube”, a correction has been made and paragraphs 2 and 4 have been added. Previous editions DIN 1794: 1937x-06, 1956-09 DIN 1795: 1937x-06, 1953-08, 1987-02 DIN 1795-1: 1969-08 DIN 1795-2: 1969-08 DIN 1795-3: 1969-08 DIN EN 754-7: 1998-10, 2008-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
8、EN 754-7 June 2016 ICS 77.150.10 Supersedes EN 754-7:2008English Version Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form Aluminium et alliages daluminium - Barres et tubes tirs - Partie 7 : Tubes fils sur aiguille, tolrances su
9、r dimensions et forme Aluminium und Aluminiumlegierungen - Gezogene Stangen und Rohre - Teil 7: Nahtlose Rohre, Grenzabmae und Formtoleranzen This European Standard was approved by CEN on 11 April 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con
10、ditions 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-CENELEC Management Centre or to any CEN member. This European Standard exis
11、ts 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national sta
12、ndards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S
13、lovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reser
14、ved worldwide for CEN national Members. Ref. No. EN 754-7:2016 E2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 5 3 Tolerances on dimensions . 5 3.1 General 5 3.2 Diameter - Round tube 5 3.3 Width, depth or width across flats - squares, rectangles, hexagons, octagons . 6 3.4 W
15、all thickness variation (eccentricity) . 7 3.5 Length 8 3.6 Squareness of cut ends 9 4 Tolerances on form 9 4.1 General 9 4.2 Straightness . 9 4.3 Convexity-Concavity 10 4.4 Twist . 11 4.5 Angularity . 12 4.6 Corner and fillet radii . 13 4.7 Depth of dents for round tube . 13 Annex A (informative) W
16、all thickness variation (eccentricity) . 14 A.1 General . 14 A.2 Specifying round tube sizes and tolerances . 14 Bibliography . 16 EN 754-7:2016 (E) DIN EN 754-7:2016-10 3 European foreword This document (EN 754-7:2016) has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium all
17、oys”, 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 December 2016, and conflicting national standards shall be withdrawn at the latest by December 2016
18、. 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. This document supersedes EN 754-7:2008. The following technical modifications have b
19、een introduced during the revision: correction of Subclause 3.2, Diameter - Round tube. 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; Pa
20、rt 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: Port
21、hole tubes, tolerances on dimensions and form. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, For
22、mer Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 754-7:2016 (E) DIN EN 754-7:2016-10 4
23、 1 Scope This European Standard specifies the tolerances on dimensions and form for aluminium and aluminium alloys cold drawn seamless tubes with an outside diameter (OD) from 3 mm to 350 mm (round tube, see Figure 1) or with a cross section contained within a circumscribing circle (CD) from 8 mm to
24、 300 mm (other than round tube, see Figure 2) supplied in straight lengths. This European Standard only applies to tube produced by the seamless die/mandrel method of extrusion (and then cold drawn to the final dimensions required). The temper designations used in this part are according to EN 515.
25、This document applies to cold drawn, seamless tube for general engineering applications. This document does not apply to: cold drawn tube produced by the porthole/bridge method (EN 754-8), tubes delivered in coils (EN 13958), coiled tubes cut to length (EN 13958). Figure 1 Round tube Figure 2 Circum
26、scribing circle for other than round tube EN 754-7:2016 (E) DIN EN 754-7:2016-10 5 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For und
27、ated references, the latest edition of the referenced document (including any amendments) applies. EN 754-1:2016, Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 1: Technical conditions for inspection and delivery 3 Tolerances on dimensions 3.1 General When outside diameter (OD), ins
28、ide diameter (ID), and wall thickness (t) (or their equivalent dimensions in other than round tube), are all specified, standard tolerances shall apply to any two of these dimensions, but not to all three. As a result, the purchaser shall only state two nominal dimensions on any given order. 3.2 Dia
29、meter - Round tube Mean diameter is defined as the average of two diameter measurements taken at right angles to each other at any position along the length. The maximum allowable deviation of diameter at any point from the specified diameter is the maximum difference measured at any point along the
30、 length of the tube, i.e. it is inclusive of any ovality in the cross section. The tolerances on diameter are specified in Table 1. As detailed in EN 754-1:2016, Clause 4, if the original order does not make clear the nature of the diameter tolerances required, the supplier shall interpret them as i
31、nclusive of any ovality (i.e. maximum allowable deviation at any point from the specified diameter in Table 1). However, the diameter tolerances may be expressed as both mean and inclusive of ovality if this is specifically requested by the purchaser. EN 754-7:2016 (E) DIN EN 754-7:2016-10 6 Table 1
32、 Tolerances on diameter for round tube Dimensions in millimetres Diameter (OD or ID) Tolerance on diameter Maximum allowable deviation of mean diameter from specified diameter eMaximum allowable deviation of diameter at any point from specified diameter aOver Up to and including Non-annealed and non
33、 heat treated tube bHeat treated tube cTempers O, H111 and Tx510 3 8 0,04 d 0,08 d 0,12 d 0,25 d 8 18 0,05 0,09 0,15 0,30 18 30 0,06 0,10 0,20 0,40 30 50 0,07 0,12 0,25 0,50 50 80 0,09 0,15 0,36 0,70 80 120 0,14 0,20 0,60 1,2 120 200 0,25 0,40 1,2 2,4 200 350 0,38 0,60 1,7 3,4 aNot applicable to tub
34、es having a wall thickness less than 2,5 % of the specified outside diameter. The tolerance for tubes with wall thickness less than 2,5 % of the specified outside diameter shall be determined by multiplying the applicable tolerance as follows: wall thickness over 2,0 % up to and including 2,5 % of o
35、utside diameter: 1,5 tolerance; wall thickness over 1,5 % up to and including 2,0 % of outside diameter: 2,0 tolerance; wall thickness over 1,0 % up to and including 1,5 % of outside diameter: 3,0 tolerance; wall thickness over 0,5 % up to and including 1,0 % of outside diameter: 4,0 tolerance. bApp
36、lies to all alloys in H1x, H2x, H3x tempers, and to alloy EN AW-6063 in the T832 temper. cApplies to all alloys in T3, T4, T6, T66, T73, T8, T9 and Tx511 tempers. dThis tolerance applies for outside diameter only, i.e. tube in this size range can only be specified as “Outside Diameter x Wall Thickne
37、ss”. eShall not apply to Tx510 or Tx511 tempers. 3.3 Width, depth or width across flats - squares, rectangles, hexagons, octagons The tolerances on width, depth or width across flats are specified in Table 2. EN 754-7:2016 (E) DIN EN 754-7:2016-10 7 Table 2 Tolerances on width, depth or width across
38、 flats Dimensions in millimetres Width, depth or width across flats Maximum allowable deviation of width, depth or width across flats at any point from the specified value aOver Up to and including Non-annealed and non heat treated tube bHeat treated tube cAnnealed tube d 8 18 0,20 0,30 0,60 18 30 0
39、,25 0,40 0,80 30 50 0,35 0,50 1,0 50 80 0,50 0,70 1,4 80 120 0,70 1,0 2,0 120 200 1,0 1,5 3,0 aNot applicable to tubes having a wall thickness less than 2,5 % of the specified outside width, depth or width across flats. The tolerance for tubes with wall thickness less than 2,5 % of the specified wid
40、th, depth or width across flats shall be determined by multiplying the applicable tolerance as follows: wall thickness over 2,0 % up to and including 2,5 % of outside parameter: 1,5 tolerance; wall thickness over 1,5 % up to and including 2,0 % of outside parameter: 2,0 tolerance; wall thickness ove
41、r 1,0 % up to and including 1,5 % of outside parameter: 3,0 tolerance; wall thickness over 0,5 % up to and including 1,0 % of outside parameter: 4,0 tolerance. bApplies to all alloys in F, H1x, H2x, H3x tempers. cApplies to all alloys in T3, T4, T6, T66, T73, T8, T9 and Tx511 tempers. dApplies to al
42、l alloys in O, H111 and Tx510 tempers. 3.4 Wall thickness variation (eccentricity) The tolerances on wall thickness variation (eccentricity) are specified in Table 3. EN 754-7:2016 (E) DIN EN 754-7:2016-10 8 Table 3 Tolerances on wall thickness variation (eccentricity) Nominal wall thickness t mm To
43、lerance on wall thickness variation for round tube (eccentricity) % aTolerance on wall thickness variation for other than round tube % a Over Up to and including 0,5 3 10 12 3 5 9 11 5 - 8 10 Round tube dimensions can be expressed in three different ways, i.e. outside diameter (OD) wall thickness (t
44、), inside diameter (ID) t (where t is the nominal wall thickness) and OD ID. Depending of the way of ordering the tube the values in Table 3 should be understood as follows (see Annex A for further explanation): for tubes specified as OD x t or ID x t the values are allowable variation at any point;
45、 for tubes specified as OD x ID the above values are allowable variation from the calculated mean wall thickness. aFor OD greater than 150 mm together with and OD/t ratio of more than 10, the tolerance on wall thickness variation shall be subject to agreement between supplier and purchaser. 3.5 Leng
46、th If fixed lengths are to be supplied, this shall be stated in the order document. The tolerances on fixed length are specified in Table 4. Table 4 Tolerances on fixed length Dimensions in millimetres Outside diameter or diameter of the circumscribing circle Tolerances on fixed length Over Up to an
47、d including L 2 000 2 000 5 - 30 0,30 0,20 30 60 0,40 0,30 60 100 0,60 0,40 100 150 0,90 0,60 150 200 1,2 0,80 4.4 Twist Twist T shall be measured as shown in Figure 5 by placing the tube on a flat base plate, the tube resting under its own mass and measuring the maximum distance at any point along
48、the length between the bottom surface of the tube and the base plate surface. Twist tolerances are specified in Table 7 as a function of the width W and the length L of the tube. Key 1 base plate Figure 5 Measurement of twist EN 754-7:2016 (E) DIN EN 754-7:2016-10 12 Table 7 Twist tolerances Dimensi
49、ons in millimetres Width W Twist tolerance T Per 1 000 mm of length aOn total tube length L Over Up to and Including Up to and including 6 000 mm Over 6 000 mm - 30 1,2 2,5 3,0 30 50 1,5 3,0 4,0 50 100 2,0 3,5 5,0 100 200 2,5 5,0 7,0 aTwist tolerances for lengths less than 1 000 mm shall be subject to agreement between supplier an
