1、BS EN 755-9:2016Aluminium and aluminiumalloys Extruded rod/bar,tube and profilesPart 9: Profiles, tolerances on dimensionsand formBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 755-9:2016 BRITISH STANDARDNational forewordThis British Standard is the UK impleme
2、ntation of EN 755-9:2016. Itsupersedes BS EN 755-9:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/35, Light metals and their alloys.A list of organizations represented on this committee can beobtained on request to its secretary.This publicati
3、on does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 91005 0ICS 77.150.10Compliance with a British Standard cannot confer immunity froml
4、egal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2016.Amendments issued since publicationDate Text affectedBS EN 755-9:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 755-9 June 2016 ICS 77.150.10 Supersedes EN
5、 755-9:2008English Version Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 9: Profiles, tolerances on dimensions and form Aluminium et alliages daluminium - Barres, tubes et profils fils - Partie 9 : Profils, tolrances sur dimensions et forme Aluminium und Aluminiumlegier
6、ungen - Stranggepresste Stangen, Rohre und Profile - Teil 9: Profile, 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
7、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 exists in three official versions (English, Fr
8、ench, 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 standards bodies of Austria, Belgium, Bulgari
9、a, 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, Slovenia, Spain, Sweden, Switzerland, Turke
10、y 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 reserved worldwide for CEN national Members. Re
11、f. No. EN 755-9:2016 EBS EN 755-9:2016EN 755-9:2016 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Alloy groups 5 3 Tolerances on dimensions . 6 3.1 Cross-sectional dimensions . 6 3.1.1 General 6 3.1.2 Tolerances on dimensions other than wall thickness . 6 3.1.3 Tolerances on wall thickness o
12、f solid and hollow profiles 9 3.2 Length . 11 3.3 Squareness of cut ends . 12 4 Tolerances on form . 12 4.1 General . 12 4.2 Straightness 12 4.3 Convexity-Concavity 12 4.4 Contour 14 4.5 Twist . 15 4.6 Angularity . 17 4.7 Corner and fillet radii . 18 Bibliography . 20 BS EN 755-9:2016EN 755-9:2016 (
13、E) 3 European foreword This document (EN 755-9:2016) 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 the status of a national standard, either by publication of an identical text or
14、 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 be the subject of patent rights. CEN and/or CENELEC shall not be held responsibl
15、e for identifying any or all such patent rights. This document supersedes EN 755-9:2008. The following technical modifications have been introduced during the revision: Subclause 4.2, Straightness; Subclause 4.3, Convexity-Concavity; Table 10; Subclause 4.4 Contour; Table 11; Subclause 4.5, Twist. E
16、N 755 comprises the following parts under the general title Aluminium and aluminium alloys Extruded rod/bar, tube and profiles: 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, toleran
17、ces 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 form; Part 9: Profiles, tolerances on di
18、mensions 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, Former Yugoslav Republic of Mac
19、edonia, BS EN 755-9:2016EN 755-9:2016 (E) 4 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. BS EN 755-9:2016EN 755-9:2016 (E
20、) 5 1 Scope This European Standard specifies the tolerances on dimensions and form for aluminium and aluminium alloy extruded profile with a cross section contained within a circumscribing circle not greater than 800 mm (see Figure 1). The temper designations used in this part are according to EN 51
21、5. This European Standard applies to extruded profiles for general engineering applications only. Key 1 circumscribing circle CD 800 mm Figure 1 Circumscribing circle 2 Alloy groups For the purpose of this document, the alloys are distributed into two groups which correspond to varying degrees of di
22、fficulty when manufacturing the products. The division into group I and group II of the most commonly used general engineering alloys is specified in Table 1. Grouping of other alloys is subject to agreement between supplier and purchaser. Table 1 Alloy groups Group I EN AW-1050A, EN AW-1070A, EN AW
23、-1200, EN AW-1350 EN AW-3102, EN AW-3003, EN AW-3103 EN AW-5005, EN AW-5005A EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-6005A, EN AW-6106, EN AW-6008, EN AW-6010A, EN AW-6023, EN AW-6060, EN AW-6360, EN AW-6063, EN AW-6063A, EN AW-6463 Group II EN AW-2007, EN AW-2011, EN AW-2011A, EN AW-2014, EN AW
24、-2014A, EN AW-2017A, EN AW-2024, EN AW-2030 EN AW-5019, EN AW-5049, EN AW-5051A, EN AW-5251, EN AW-5052, EN AW-5154A, EN AW-5454, EN AW-5754, EN AW-5083, EN AW-5086 EN AW-6012, EN AW-6014, EN AW-6018, EN AW-6351, EN AW-6061, EN AW-6261, EN AW-6262, EN AW-6262A, EN AW-6065, EN AW-6081, EN AW-6082, EN
25、 AW-6182 EN AW-7003, EN AW-7005, EN AW-7108, EN AW-7108A, EN AW-7020, EN AW-7021, EN AW-7022, EN AW-7049A, EN AW-7075 BS EN 755-9:2016EN 755-9:2016 (E) 6 3 Tolerances on dimensions 3.1 Cross-sectional dimensions 3.1.1 General The tolerances on the dimensions listed below (see Figures 2, 3 and 4) are
26、 specified in the relevant Tables 2 to 9. A: wall thicknesses except those enclosing the hollow spaces in hollow profiles; B: wall thicknesses enclosing the hollow spaces in hollow profiles except those between two hollow spaces; C: wall thicknesses between two hollow spaces in hollow profiles; E: t
27、he length of the shorter leg of profiles with open ends; H: all dimensions (except wall thickness) between points on the cross section of the profile or the centres of open screw holes. Between points on the outer contour to points inside a hollow chamber so long as they are not identical to wall th
28、ickness B. Alternatively from the inside of a hollow chamber to the inside of another hollow chamber so long as they are not identical to wall thickness C and are not within the definition of dimension H. Such dimensions shall be replaced by dimension H plus wall thickness B or C or shall be subject
29、 to agreement between supplier and purchaser. Figure 2 Definition of dimensions A, B, C, E, H 3.1.2 Tolerances on dimensions other than wall thickness The tolerances on dimensions shall be as specified in Tables 2 and 3. For profiles with open ends (see Figures 3, 4 and the relevant examples) the to
30、lerances specified in Table 4 shall be added to those of Tables 2 and 3 for dimension H across open ended legs in order to obtain the tolerances on the gap between any opposite points on these ends. BS EN 755-9:2016EN 755-9:2016 (E) 7 Table 2 Tolerances on cross-sectional dimensions of solid and hol
31、low profiles - Alloy group I Dimensions in millimetres Dimension H Tolerances on H for circumscribing circle CD a, bOver Up to and including CD 100 100 5 - 30 0,30 0,20 0,20 30 60 0,40 0,30 0,30 60 100 0,60 0,40 0,40 100 150 0,90 0,60 0,60 150 200 1,2 0,80 0,80 200 300 1,8 1,2 1,2 300 400 2,4 1,6 1,
32、6 400 500 3,0 2,0 2,0 500 600 3,6 2,4 2,4 600 800 4,0 3,0 3,0 For alloys in Group II, the specified tolerances shall be multiplied by a factor of 1,4. aIf the profile has varying wall thicknesses in the measurement range, the thinnest wall thickness shall be used. In the case of solid and hollow pro
33、files with a width W of at least 150 mm, the local deviation f1, shall not exceed 0,7 mm for any 100 mm of width W1. 4.4 Contour For profiles in Alloy Group I with curved cross sections, the deviation at any point of the curve from the theoretically exact line as defined by the drawing shall not be
34、greater than the appropriate tolerance C specified in Table 11. Considering all points on the curve, a tolerance zone shall be defined as the zone between two envelopes running tangentially to all circles of diameter C which can be drawn with their centres lying along the theoretically exact line; t
35、his is shown in Figure 8. BS EN 755-9:2016EN 755-9:2016 (E) 15 For alloys in Alloy Group II the specified tolerances shall be multiplied by a factor of 1,4. Figure 8 Definition of contour tolerances Table 11 Contour tolerances for alloys in Alloy Group I Dimensions in millimetres Width W of the cont
36、our Contour tolerance = diameter C of the tolerance circle Over Up to and including - 30 0,30 30 60 0,50 60 90 0,70 90 120 1,0 120 150 1,2 150 200 1,5 200 250 2,0 250 300 2,5 300 400 3,0 400 500 3,5 500 800 4,0 NOTE Contour tolerances can be checked by the use of suitable gauges (min./max.). 4.5 Twi
37、st Twist T shall be measured as shown in Figure 9 by placing the profile on a flat baseplate, the profile resting under its own mass. As shown in Figure 9, twist is determined by measuring the maximum distance between the bottom surface of the profile and the surface of the base plate. Twist toleran
38、ces are specified in Table 12 as a function of the width W and the length L of the profile. BS EN 755-9:2016EN 755-9:2016 (E) 16 Key 1 base plate Figure 9 Measurement of twist Figure 9 shows an example of a simple case of twist. There are other possibilities where the twist shall be identified diffe
39、rently. Some examples are given below: Differing positioning of the profile on the baseplate such that the maximum twist shall be calculated as the sum of two separate measurements on the diagonal end positions. Discontinuous twist over the profile length such that the maximum twist is the differenc
40、e between specific points along the length. The maximum twist in this case is not necessarily equal to the maximum distance to the base plate and should not be confused with planarity of the surfaces (combination of twist and straightness). In the case of such difficult interpretation of twist, the
41、specific requirements and methods of measurement shall be subject to agreement between supplier and purchaser. BS EN 755-9:2016EN 755-9:2016 (E) 17 Table 12 Twist tolerances Dimensions in millimetres Width W Twist tolerance T for length L Over Up to and including Per 1 000 of length aOn total profil
42、e length L Over 1 000 and including 6 000 Over 6 000 - 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 7,0 200 300 2,5 6,0 8,0 300 450 3,0 8,0 1,5 x L (L in metres) 450 600 3,5 9,5 600 800 4,5 10,0 aTwist tolerances for lengths less than 1 000 mm shall be subject to agreement bet
43、ween supplier and purchaser. 4.6 Angularity The deviation from a specified angle shall be measured as shown in Figures 10 and 11. The angularity tolerances for right angles shall be as specified in Table 13 as a function of profile width W. The maximum allowable deviation in an angle other than a ri
44、ght angle shall be 1. In the case of unequal side lengths the tolerance on angularity shall apply to the shorter side of the angle, i.e. it is measured starting from the longer side. Table 13 Angularity tolerances for right angles Dimensions in millimetres Width W Maximum allowable deviation, Z from
45、 a right angle Over Up to and including - 30 0,4 30 50 0,7 50 80 1,0 80 120 1,4 120 180 2,0 180 240 2,6 240 300 3,1 300 400 3,5 For profiles with W which exceeds 400 mm, the tolerances shall be subject to agreement between the supplier and purchaser. BS EN 755-9:2016EN 755-9:2016 (E) 18 Figure 10 Me
46、asurement of angularity in a right angle Figure 11 Measurement of angularity in an angle other than a right angle 4.7 Corner and fillet radii Sharp corners and fillets may be slightly rounded unless otherwise indicated on the drawing. The maximum allowable corner and fillet radii shall be as specifi
47、ed in Table 14. When a corner or fillet radius is specified, the maximum allowable deviation from this radius shall be as specified in Table 15. BS EN 755-9:2016EN 755-9:2016 (E) 19 Table 14 Maximum allowable corner and fillet radii Dimensions in millimetres Wall thickness A, B or C a Maximum allowa
48、ble radius Alloy group I Alloy group II b 5 0,6 0,8 5 1,0 1,5 aWhere varying wall thicknesses are involved, the maximum allowable radius in the transition zone is a function of the greater wall thickness. bThese tolerances only apply to 6xxx series alloys in group II. The maximum allowable radii for
49、 the other alloys in group II shall be subject to agreement between supplier and purchaser. Table 15 Maximum allowable deviation from specified corner and fillet radii Specified radius mm Maximum allowable deviation from specified radius 5 0,5 mm 5 10 % BS EN 755-9:2016EN 755-9:2016 (E) 20 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations This page deliberately left blankBSI is the national body responsible for preparing British Standards a
