1、June 2017 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!%fC)“2673206www.din.deDIN
2、 EN 12020-2Aluminium and aluminium alloys Extruded precision profiles in alloys EN AW6060 and EN AW6063 Part 2: Tolerances on dimensions and form;English version EN 120202:2016 + AC:2017,English translation of DIN EN 12020-2:2017-06Aluminium und Aluminiumlegierungen Stranggepresste Przisionsprofile
3、aus Legierungen EN AW6060 und EN AW6063 Teil 2: Grenzabmae und Formtoleranzen;Englische Fassung EN 120202:2016 + AC:2017,Englische bersetzung von DIN EN 12020-2:2017-06Aluminium et alliages daluminium Profils de prcision fils en alliages EN AW6060 et EN AW6063 Partie 2: Tolrances sur dimensions et f
4、orme;Version anglaise EN 120202:2016 + AC:2017,Traduction anglaise de DIN EN 12020-2:2017-06SupersedesDIN EN 120202:201703www.beuth.deDocument comprises 20 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.05.17DIN EN 12020-2:201
5、7-06 2 A comma is used as the decimal marker. National foreword This document (EN 12020-2:2016) 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 responsib
6、le German body involved in its preparation was DIN-Normenausschuss Nichteisenmetalle (DIN Standards Committee Nonferrous Metals), Working Committee NA 066-01-04 AA “Extruded products”. The start and finish of text introduced or altered by amendment is indicated in the text by tags null . Amendments
7、This standard differs from DIN EN 12020-2:2008-06 as follows: a) in 4.1, the text of paragraphs six and seven has been amended; b) Figure 7 with text has been included; c) in 4.5, the text of paragraph one has been amended; d) a new description of Figure 11 has been included. Compared with DIN EN 12
8、020-2:2017-03, the following corrections have been made: a) in 4.2, the paragraph beneath Figure 6 and Figure 7 has been deleted; b) subsequent figures have been renumbered and corresponding cross-references have been amended. Previous editions DIN 17615-3: 1976-12, 1987-01 DIN EN 12020-2: 2001-07,
9、2008-06, 2017-03 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12020-2:2016 + AC March 2017 ICS 77.150.10 Supersedes EN 12020-2:2008 English Version Aluminium and aluminium alloys Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 Part 2: Tolerances on dimensions and form Alumini
10、um et alliages daluminium Profils de prcision fils en alliages EN AW-6060 et EN AW-6063 Partie 2 : Tolrances sur dimensions et forme Aluminium und Aluminiumlegierungen Stranggepresste Przisionsprofile aus Legierungen EN AW-6060 und EN AW-6063 Teil 2: Grenzabmae und Formtoleranzen This European Stand
11、ard was approved by CEN on 4 March 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 alteration. Up-to-date lists and bibliographical references concerning suc
12、h 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 made by translation under the responsibility of a CEN member into its own
13、 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, G
14、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. This document consolidates EN 12020-2:2016 and the corrigendum EN 12020-2:2016/AC:2017. EUROPEAN C
15、OMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12020-2:2016 + AC:2017
16、 E EN 12020-2:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 5 3 Tolerances on dimensions . 5 3.1 General 5 3.2 Cross-sectional dimensions . 5 3.3 Length 7 3.4 Squareness of cut ends 8 3.5 Length offset for profiles with a thermal barrier 8 4 Tolerances on form 8 4.1
17、 Parallelism . 8 4.2 Straightness . 9 4.3 Convexity-Concavity 10 4.4 Contour 12 4.5 Twist . 13 4.6 Angularity . 15 4.7 Corner and fillet radii . 16 Bibliography . 18 DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 3 European foreword This document (EN 12020-2:2016) has been prepared by Technical Committe
18、e 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 June 2017, and conflicting national standards shall be wit
19、hdrawn at the latest by June 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12020-2:2008. The following technical
20、modifications have been introduced during the revision: subclause 4.1, Parallelism; subclause 4.2, Straightness; subclause 4.5, Twist. EN 12020 comprises the following parts under the general title “Aluminium and aluminium alloys Extruded precision profiles in alloys EN AW-6060 and EN AW-6063”: Part
21、 1: Technical conditions for inspection and delivery Part 2: Tolerances on dimensions and form According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus
22、, 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, Turkey and the United K
23、ingdom. DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 4 1 Scope This European Standard specifies tolerances on dimensions and form of extruded precision profiles, in alloys EN AW-6060 and EN AW-6063 manufactured with and without a thermal barrier (see Figures 1 and 2). It applies to extruded products s
24、upplied without further surface treatment. Precision profiles covered in this standard are distinguished from extruded profiles for general applications covered in EN 755-9 by the following characteristics: they are mainly for architectural applications; they meet more stringent requirements regardi
25、ng the surface condition of visible surfaces; the maximum diameter of the circumscribing circle CD is 350 mm; they are made to closer tolerances on dimensions and form. In the case of profiles which, due to the complexity of their design, are difficult to manufacture and specify, then special agreem
26、ents between supplier and purchaser may need to be reached. NOTE The effect of the thermal barrier material on the dimensional tolerances is covered by this document although the actual thermal barrier material itself is not (see EN 14024). Key 1 CD maximum 350 mm Key 1 CD maximum 350 mm 2 thermal b
27、arriers Figure 1 Profile without thermal barrier Figure 2 Profile containing thermal barrier DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 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 da
28、ted references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 1101, Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out (ISO 1101)
29、 3 Tolerances on dimensions 3.1 General If, for compelling reasons, tolerances closer than those specified in 3.2.2 are required, these shall only be specified for dimensions that are critical to the function, subject to specific agreement between supplier and purchaser. Any such reduction shall not
30、 exceed two-thirds of the values specified in this standard and is subject to a minimum tolerance band of 0,3 mm. 3.2 Cross-sectional dimensions 3.2.1 General The tolerances of the following dimensions (see Figure 3) are specified in Tables 1 and 2. A: wall thicknesses except those enclosing the hol
31、low 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: the length of the shorter leg of profiles with open ends; H: all dimensions (except wall thi
32、ckness) between points on the cross section of the profile or the centres of open screw holes, including open ends. Figure 3 Definition of dimensions A, B, C, E, H DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 6 3.2.2 Tolerances on dimensions other than wall thickness The tolerances for dimension H sha
33、ll be as specified in Table 1. Table 1 Tolerances on cross-sectional dimensions Dimensions in millimetres Dimension H Tolerances on H Tolerances on H (open ends) Over Up to and including (except open ends) E 60 60 10 000 - 100 +5 0 +7 0 +1 0 0 Subject to agreement between supplier and purchaser 100
34、200 +7 0 +9 0 +12 0 200 350 +8 0 + 1 1 0 +14 0 If no fixed or minimum length is specified in the order, profiles may be delivered in random lengths. The length range and the tolerances on the random lengths shall be subject to agreement between supplier and purchaser. DIN EN 12020-2:2017-06 EN 12020
35、-2:2016 (E) 8 3.4 Squareness of cut ends The squareness of cut ends shall be within half of the fixed length tolerance range specified in Table 3 for both fixed and random lengths, e.g. for a fixed length tolerance of + 100 mm the deviation from squareness of cut ends shall be within 5 mm measured o
36、ver all the complete cross sectional width of the profile. 3.5 Length offset for profiles with a thermal barrier Length offset K, see Figure 4, for profiles with a thermal barrier shall be within the tolerance range for the fixed length specified in Table 3, e.g. for a fixed length tolerance of+ 100
37、 mm the length offset shall be within 10 mm. Key 1 length of profile 2 profile 1 3 thermal barrier 4 profile 2 Figure 4 Length offset K 4 Tolerances on form 4.1 Parallelism Requirements on parallelism / of opposite outer planes shall be subject of agreement between supplier and purchaser and shall b
38、e specified on the drawing. Parallelism shall be marked on the drawing as specified in Figure 5, using the / symbol as in EN ISO 1101. Tolerances on parallelism shall not increase tolerances on dimensions, i.e. shall always lie within dimensional tolerances or tolerance ranges. Where outer planes ar
39、e of unequal length, the longer one shall be taken as contact reference. Two clearly defined reference points shall specify the width of the parallelism measurement. The tolerance on parallelism / for outer parallel dimension H apply for cross sectional measurements in a single plane. The value for
40、parallelism may be selected in accordance with the tolerance range given in Table 1 (including those for open ends). DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 9 Example Dimension H = 50 0,4, i.e. possible parallelism /0,8. Requirements in Figure 5 (/, 0,4) is an example only. Tolerances to be accor
41、ding to Table 1: Figure 5 Marking parallelism for convex and concave surfaces 4.2 Straightness Deviations from straightness, hsand ht, shall be measured as shown in Figure 6, with the profile placed on a horizontal base plate so that its mass decreases the deviation. The straightness tolerance htsha
42、ll be as specified in Table 4. The local deviation from straightness hsshall not exceed 0,3 mm per 300 mm length. Key 1 base plate 2 straight edge Figure 6 Measurement of deviation from straightness In addition to the straightness issues shown in Figure 6, other possibilities may be encountered and
43、measured as shown in Figure 7. DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 10 a) Symmetrical deflection b) Kink to one side Figure 7 Possible other measurements Should other cases of interpretation and measurement be encountered then the specific requirements and method of measurement shall be subjec
44、t to agreement between supplier and purchaser. Table 4 Straightness tolerances Dimensions in millimetres Straightness tolerance htfor specified length L L 1 000 1 000 6 000 0,7 1,3 1,8 2,2 2,6 3,0 3,5 4.3 Convexity-Concavity The convexity-concavity f shall be measured as shown in Figures 8 and 9. Th
45、e tolerances shall be as specified in Table 5. DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 11 Key W width f deviation W1100 mm f1local deviation per any 100 mm Figure 8 Measurement of convexity concavity for hollow section Key 1 base plate W width f deviation W1100 mm f1local deviation per any 100 mm
46、 Figure 9 Measurement of convexityconcavity for open section DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 12 Table 5 Convexity-concavity tolerances Dimensions in millimetres Width W Maximum allowable deviation f Over Up to and including - 30 0,20 30 60 0,30 60 100 0,40 100 150 0,50 150 200 0,70 200 25
47、0 0,85 250 300 1,0 300 350 1,2 In the case of profiles with a width W of over 150 mm, the local deviation f1shall not exceed 0,50 mm for any width W1of 100 mm. 4.4 Contour For profiles with curved cross sections, the deviation at any point of the curve, from the theoretically exact line as defined b
48、y the drawing shall not be greater than the appropriate tolerance C specified in Table 6. 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 t
49、heoretically exact line; this is shown in Figure 10. Figure 10 Definition of contour tolerances DIN EN 12020-2:2017-06 EN 12020-2:2016 (E) 13 Table 6 Contour tolerances Dimensions in millimetres Width W of the contour Contour tolerance = Over Up to and including Diameter C of the tolerance circle - 30 0,30 30 60 0,50 60 90 0,70 90 120 1,00 120 150 1,20 150 200 1,50 200 250 2,00 250 300 2,50 300 350 3,00 NOTE Contour tolerances can be checked by placing a sect
