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!%nQ“2577546www.din.deD
2、IN EN 754-8Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 8: Porthole tubes, tolerances on dimensions and form;English version EN 7548:2016,English translation of DIN EN 754-8:2016-10Aluminium und Aluminiumlegierungen Gezogene Stangen und Rohre Teil 8: Mit Kammerwerkzeug stranggepre
3、sste Rohre, Grenzabmae und Formtoleranzen;Englische Fassung EN 7548:2016,Englische bersetzung von DIN EN 754-8:2016-10Aluminium et alliages daluminium Barres et tubes tirs Partie 8: Tubes fils pont, tolrances sur dimensions et forme;Version anglaise EN 7548:2016,Traduction anglaise de DIN EN 754-8:2
4、016-10SupersedesDIN EN 7548:200806www.beuth.deDocument comprises 19 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.16 DIN EN 754-8:2016-10 2 A comma is used as the decimal marker. National foreword This document (EN 754-8:2
5、016) has been prepared 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 S
6、tandards Committee Nonferrous Metals), Working Committee NA 066-01-04 AA Strangpresserzeugnisse. Amendments This standard differs from DIN EN 754-8:2008-06 as follows: a) a new Clause 2 “Normative references” has been included and the numbers following have been updated accordingly; b) in Subclause
7、3.2 “Diameter Round tube”, a correction has been made and paragraphs 2 and 4 have been added. Previous editions DIN EN 754-8: 1998-10, 2008-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 754-8 June 2016 ICS 77.150.10 Supersedes EN 754-8:2008English Version Aluminium and aluminium alloys - C
8、old drawn rod/bar and tube - Part 8: Porthole tubes, tolerances on dimensions and form Aluminium et alliages daluminium - Barres et tubes tirs - Partie 8: Tubes fils pont, tolrances sur dimensions et forme Aluminium und Aluminiumlegierungen - Gezogene Stangen und Rohre - Teil 8: Mit Kammerwerkzeug s
9、tranggepresste 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 conditions for giving this European Standard the status of a national standard without any al
10、teration. 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 exists in three official versions (English, French, German). A version in any other language m
11、ade 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 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Est
12、onia, Finland, Former 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 United Kingdom. EUROPEAN COMMITTEE FOR STA
13、NDARDIZATION 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 reserved worldwide for CEN national Members. Ref. No. EN 754-8:2016 E2 Contents Page European f
14、oreword . 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 Wall thickness variation (eccentricity) . 7 3.5 Length 8 3.6 Squareness of cut ends 9 4 Tol
15、erances on form 9 4.1 General 9 4.2 Straightness . 9 4.3 ConvexityConcavity . 10 4.4 Twist . 11 4.5 Angularity . 12 4.6 Corner and fillet radii . 13 4.7 Depth of dents for round tubes . 13 Annex A (informative) Wall thickness variation (eccentricity) . 15 A.1 General . 15 A.2 Specifying round tube s
16、izes and tolerances . 15 Bibliography . 17 EN 754-8:2016 (E) DIN EN 754-8:2016-10 3 European foreword This document (EN 754-8:2016) has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR. This European Standard shall be given t
17、he 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. Attention is drawn to the possibility that some of the elements of this document may b
18、e 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 754-8:2008. The following technical modifications have been introduced during the revision: Subclause 3.2 Diameter - Round tube. EN 754 comprise
19、s 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 dimensions and form; Part 4: Square bars, tolerances on dimensions and
20、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 form. According to the CEN/CENELEC Internal Regulations, the n
21、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
22、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 754-8:2016 (E) DIN EN 754-8:2016-10 4 1 Scope This European Standard specifies the tolerances on dimensions and form for aluminium and alumi
23、nium alloy cold drawn porthole 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 300 mm (other than round tube, see Figure 2), supplied in straight lengths. This document only applies
24、to cold drawn tube for general engineering applications made in the following alloys: EN AW-1050A, EN AW-1200; EN AW-3003, EN AW-3103; EN AW-5005, EN AW-5005A, EN AW-5049, EN AW-5251, EN AW-5052; EN AW-6012, EN AW-6060, EN AW-6061, EN AW-6262, EN AW-6262A; EN AW-6063, EN AW-6063A, EN AW-6065, EN AW-
25、6082; EN AW-7020. The temper designations used in this part are according to EN 515. This document only applies to tube produced by the porthole/bridge method of extrusion only (and then cold drawn to the final dimensions). This document does not apply to: cold drawn tubes produced by the seamless,
26、die/mandrel method (EN 754-7), tubes delivered in coils (EN 13958), coiled tubes cut to length (EN 13958). Figure 1 Round tube EN 754-8:2016 (E) DIN EN 754-8:2016-10 5 Figure 2 Circumscribing circle for other than round tube 2 Normative references The following documents, in whole or in part, are no
27、rmatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 754-1:2016, Aluminium and aluminium alloys Cold drawn ro
28、d/bar and tube Part 1: Technical conditions for inspection and delivery 3 Tolerances on dimensions 3.1 General When outside diameter OD, inside 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 o
29、f these dimensions, but not to all three. As a result, the purchaser shall only state two nominal dimensions on any given order. 3.2 Diameter - 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 ma
30、ximum allowable deviation at any point from the specified diameter is the maximum difference measured at any point along the 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 t
31、he original order does not make clear the nature of the diameter tolerances required, the supplier shall interpret them as inclusive 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 a
32、nd inclusive of ovality if this is specifically requested by the purchaser. EN 754-8:2016 (E) DIN EN 754-8:2016-10 6 Table 1 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
33、eMaximum allowable deviation of diameter at any point from specified diameter aOver Up to and including Non-annealed and non heat treated tube bHeat treated tube cTempers O, H111 and Tx510 3 8 0,04 d 0,08 d0,12 d0,25 d8 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
34、 0,09 0,15 0,35 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 tubes 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 b
35、e determined by multiplying the applicable tolerance as follows: wall thickness over 2,0 % up to and including 2,5 % of outside 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 outs
36、ide diameter: 3,0 tolerance; wall thickness over 0,5 % up to and including 1,0 % of outside diameter: 4,0 tolerance. bApplies 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
37、applies for outside diameter only, i.e. tube in this size range can only be specified as “Outside Diameter x Wall Thickness”. 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 fl
38、ats are specified in Table 2. EN 754-8:2016 (E) DIN EN 754-8:2016-10 7 Table 2 Tolerances on width, depth or width across 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 U
39、p 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 0,25 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 out
40、side width, depth or width across flats. The tolerance for tubes with wall thickness less than2,5 % of the specified width, 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,
41、5 tolerance; wall thickness over 1,5 % up to and including 2,0 % of outside parameter: 2,0 tolerance; wall thickness over 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 allo
42、ys in F, H1x, H2x, H3x tempers. cApplies to all alloys in T3, T4, T6, T66, T73, T8, T9 and Tx511 tempers. dApplies to all alloys in O, H111 and Tx510 tempers. 3.4 Wall thickness variation (eccentricity) The tolerances on wall thickness variation (eccentricity) for round tubes are specified in Table
43、3. For other than round tubes the wall thickness variation tolerances shall be agreed between supplier and purchaser. EN 754-8:2016 (E) DIN EN 754-8:2016-10 8 Table 3 Tolerances on wall thickness variation (eccentricity) for round tubes Nominal wall thickness t mm Tolerance on wall thickness variati
44、on (eccentricity) % Over Up to and including For OD 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 di
45、stance at any point along 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 754-8:2016 (E) DIN EN 754-8:2016-10 12 Table
46、7 Twist tolerances Dimensions 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
47、1 000 mm shall be subject to agreement between supplier and purchaser. 4.5 Angularity The deviation from square of square and rectangular tubes shall be measured as shown in Figure 6. The maximum allowable deviation from square is specified in Table 8 as a function of tube depth B. In the case of re
48、ctangular tubes, the tolerance on squareness shall apply to the shorter side of the tube. The maximum allowable deviation in an angle other than a right angle (hexagonal tubes, octagonal tubes) shall be included within the width across flats tolerances, see Table 2. Figure 6 Measurement of deviation
49、 from square EN 754-8:2016 (E) DIN EN 754-8:2016-10 13 Table 8 Squareness tolerances for square and rectangular tube Dimensions in millimetres Depth B Maximum allowable deviation Z From right angle Over Up to and including - 30 0,4 30 50 0,7 50 80 1,0 80 120 1,4 120 200 2,0 4.6 Corner and fillet radii Sharp corners and fillet rad
