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1、BRITISH STANDARD BS EN 755-4:2008 Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 4: Square bars, tolerances on dimensions and form ICS 77.150.10 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001
2、 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 755-4:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008 ISBN 978 0 580 55558 9 National foreword Th
3、is British Standard is the UK implementation of EN 755-4:2008. It supersedes BS EN 755-4:1996 which is withdrawn.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
4、on request to its secretary. This publication does not purport 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 publication Da
5、teComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
6、EN 755-4 March 2008 ICS 77.150.10Supersedes EN 755-4:1995 English Version Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 4: Square bars, tolerances on dimensions and form Aluminium et alliages daluminium - Barres, tubes et profils fils - Partie 4: Barres carres, tolrance
7、s sur dimensions et forme Aluminium und Aluminiumlegierungen - Stranggepresste Stangen, Rohre und Profile - Teil 4: Vierkantstangen, Grenzabmae und Formtoleranzen This European Standard was approved by CEN on 10 February 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
8、 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 such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This Europe
9、an 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 language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the nati
10、onal standards bodies of 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, Switzerland and
11、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 755-4:2
12、008: E Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 2 Contents Page Foreword3 1 Scope 5
13、2 Alloy groups.5 3 Tolerances on dimensions .5 3.1 Width across flats 5 3.2 Corner radii.6 3.3 Length.6 3.4 Squareness of cut ends 7 4 Tolerances on forms .7 4.1 Straightness.7 4.2 Convexity - Concavity .8 4.3 Twist8 4.4 Squareness.9 Bibliography11 BS EN 755-4:2008 Copyright British Standards Instit
14、ution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 3 Foreword This document (EN 755-4:2008) has been prepared by Technical Commi
15、ttee 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 September 2008, and conflicting national standards shal
16、l be withdrawn at the latest by September 2008. This document supersedes EN 755-4:1995. Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 5 “Extruded and drawn products“ to revise EN 755-4:1995. The following technical modifications have been introduced during the
17、revision: Clause 2: Alloys EN AW-3102, EN AW-6008, EN AW-6010A, EN AW-6014, EN AW-6023, EN AW-6360, EN AW-6262A, EN AW-6065 and EN AW-6182 are added in Group I Clause 2: Alloys EN AW-5049, EN AW-7108, EN AW-7108A and EN AW-7021 are added in Group II EN 755 comprises the following parts under the gen
18、eral 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, tolerances on dimensions and form Part 5: Rectangular bar
19、s, 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 dimensions and form Attention is drawn to the possibility
20、 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 grant licenses on standardized standards pr
21、oducts under reasonable and not discriminatory conditions then this product shall be removed from the corresponding standard. BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 2
22、0:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 4 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, Cyprus,
23、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 the United Kingdom. BS EN 755-4:2008 Copyright British Standa
24、rds Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 5 1 Scope This document specifies the tolerances on dimensions and
25、form for aluminium and aluminium alloy extruded square bars having widths across flats from 10 mm up to 220 mm. The temper designations used in this part are according to EN 515. 2 Alloy groups The division into group I and group II of the most commonly used general engineering alloys is specified i
26、n 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-1200, EN AW-1350 EN AW-3102, EN AW-3003, EN AW-3103 EN AW-5005, EN AW-5005A, EN AW-5051A, EN AW-5251 EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-60
27、05A, EN AW-6106, EN AW-6008, EN AW-6010A, EN AW-6012, EN AW-6014, EN AW-6018, EN AW-6023, EN AW-6351, EN AW-6060, EN AW-6360, EN AW-6061, EN AW-6261, EN AW-6262, EN AW-6262A, EN AW-6063, EN AW-6063A, EN AW-6463, EN AW-6065, EN AW-6081, EN AW-6082, EN AW-6182 Group II EN AW-2007, EN AW-2011, EN AW-20
28、11A, EN AW-2014, EN AW-2014A, EN AW-2017A, EN AW-2024, EN AW-2030 EN AW-5019, EN AW-5049, EN AW-5052, EN AW-5154A, EN AW-5454, EN AW-5754, EN AW-5083, EN AW-5086 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 3 Tolerances on dimensions 3.
29、1 Width across flats The tolerances on width across flats are specified in Table 2. For the purpose of this standard the alloys are distributed into two groups which correspond to varying difficulty when manufacturing the products. The division into group I and group II of the most commonly used gen
30、eral engineering alloys is specified in Table 1. BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -
31、,-,- EN 755-4:2008 (E) 6 Table 2 Width across flats tolerances Dimensions in millimetres Width across flats S Tolerances Over Up to and including Alloy group I Alloy group II 10 18 0,22 0,30 18 25 0,25 0,35 25 40 0,30 0,40 40 50 0,35 0,45 50 65 0,40 0,50 65 80 0,45 0,70 80 100 0,55 0,90 100 120 0,65
32、 1,0 120 150 0,80 1,2 150 180 1,0 1,4 180 220 1,15 1,7 3.2 Corner radii Maximum corner radii are specified in Table 3. Table 3 Maximum corner radii Dimensions in millimetres Width across flats S Maximum corner radii Over Up to and including Alloy group I Alloy group II 10 25 1,0 1,5 25 50 1,5 2,0 50
33、 80 2,0 3,0 80 120 2,5 3,0 120 180 2,5 4,0 180 220 3,5 5,0 3.3 Length If fixed lengths are to be supplied, this shall be stated in the order document. The fixed length tolerances are specified in Table 4. BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI
34、 - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 7 Table 4 Fixed length tolerances Dimensions in millimetres Width across flats S Tolerances on length Over Up to and incl
35、uding L 2000 2000 5000 10 100 0 5+ 0 7+ 0 10+ 100 200 0 7+ 0 9+ 0 12+ 200 220 0 8+ 0 11+ 0 14+ If no fixed or minimum length is specified in the order document, square extruded bars may be delivered in random lengths. The actual lengths and tolerances on random lengths shall be agreed between suppli
36、er and purchaser. 3.4 Squareness of cut ends The squareness of cut ends shall be within half of the fixed-length tolerance range (Table 4) for both fixed and random lengths, (e.g. for a fixed length tolerance of 10 0 + mm the squareness of cut ends shall be within 5 mm). 4 Tolerances on forms 4.1 St
37、raightness Deviations from straightness, hs and ht, shall be measured as shown in Figure 1 with the square bar placed on a horizontal base plate so that its mass decreases the deviation. The straightness tolerances are specified in Table 5 (The straightness tolerance ht applies to the whole length,
38、e.g. for a length of 6 m the maximum deviation from straightness ht is the value given in the table multiplied by 6 m). The straightness tolerances apply to square bars in all tempers except O and Tx510. lf a straightness tolerance is required for either O or Tx510 temper, it shall be agreed between
39、 supplier and purchaser. BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 8
40、 Key 1 base plate 2 straight edge Figure 1 Measurement of deviation from straightness Table 5 Straightness tolerances Dimensions in millimetres Width across flats S Over Up to and including Maximum deviation from straightness per metre length ht/length mm/m Maximum localised kink in any 300 mm porti
41、on hs 10 80 2 0,8 80 120 2 1,0 120 220 3 1,5 4.2 Convexity - Concavity The convexity - concavity for square bars shall be included within the width across flats tolerances as given in Table 2. 4.3 Twist The twist measurement shall be carried out as shown in Figure 2. The twist tolerances are specifi
42、ed in Table 6. The twist tolerances apply to square bars in all tempers except O and Tx510. If a twist tolerance is required for either O or Tx510 temper, it shall be agreed between supplier and purchaser. BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BS
43、I - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 9 Key 1 base plate Figure 2 Measurement of twist Table 6 Twist tolerances Dimensions in millimetres Width across flats S
44、 Twist tolerances T Over Up to and including Per 1 000 mm of length Over the total length 10 30 1 3 30 50 1,5 4 50 120 2 5 120 220 3 6 4.4 Squareness The deviation from square shall be measured as shown in Figure 3. Squareness tolerances are specified in Table 7. BS EN 755-4:2008 Copyright British S
45、tandards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 10 Figure 3 Measurement of deviation from square Table 7 Squar
46、eness tolerances Dimensions in millimetres Width across flats S Over Up to and including Maximum deviation from square Z 10 100 0,01 x width 100 180 1,0 180 220 1,5 BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/
47、5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 755-4:2008 (E) 11 Bibliography 1 EN 515, Aluminium and aluminium alloys Wrought products Temper designations BS EN 755-4:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:17:04 MDTNo reproduction or networkin