1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 603-3:2000 The Euro
2、pean Standard EN 603-3:2000 has the status of a British Standard ICS 77.150.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Aluminium and aluminium alloys Wrought forging stock Part 3: Tolerances on dimensions and formThis British Standard, having been prepared under the di
3、rection of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 July 2000 BSI 07-2000 ISBN 0 580 34481 9 BS EN 603-3:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the of
4、ficial English language version of EN 603-3:2000. It supersedes BS 4300-11:1969 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee NFE/35, Light metals and their alloys, to Subcommittee NFE/35/5, Wrought aluminium and aluminium alloys, which has the resp
5、onsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organi
6、zations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Stand
7、ards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standa
8、rd does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 21 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.(8523($167$1
9、$5 1250(8523e(11( (8523b,6 e.g. for a diameter tolerance of 0,22 mm, the maximum permissible ovality shall be 0,22 mm. 6.2.3 Length The tolerances on fixed length shall be as specified in Table 3. If fixed lengths are to be supplied, this shall be stated on the order. Table 3 Fixed length tolerances
10、 Dimensions in millimetres Diameter Tolerances on lengths L Over Up to and including L 2 000 2 000 5 000 - 100 +5 0 +7 0 +10 0 100 200 +7 0 +9 0 +12 0 200 320 +8 0 +11 0 - If no fixed or minimum length is specified in the order, round extruded bars may be delivered in random lengths. The actual leng
11、ths and tolerances on random lengths shall be agreed between supplier and purchaser. 6.2.4 Perpendicularity of cut ends The maximum deviation from perpendicularity of cut ends shall be within half of the fixed length tolerance range (see Table 3) for both fixed and random lengths, e.g. for a toleran
12、ce on fixed length of +mm, the perpendicularity of cut ends shall be within 5 mm. 6.2.5 Straightness The maximum deviations from straightness, h tand h Sshall be as specified in Table 4. They shall be measured as shown in Figure 1 with the bar placed on a horizontal baseplate so that its mass decrea
13、ses the deviation. These straightness tolerances shall be applied only when requested by the purchaser and stated on the order.Page 8 EN 603-3:2000 %6, 1B a s e p l a t e 2 Straightedge Figure 1 Measurement of deviation from straightness Table 4 Straightness tolerances Dimensions in millimetres Diam
14、eter Over Up to and including Maximum deviation from straightness h tin mm/m Maximum localized kink in any 300 mm portion h s 8 a 80 2,0 0,80 80 120 2,0 1,0 120 200 3,0 1,5 200 320 6,0 3,0 a Including diameter 8 mm 6.3 Extruded square bar 6.3.1 Width across flats The width across flats tolerances sh
15、all be as specified in Table 5. Table 5 Width across flats tolerances Dimensions in millimetres Width across flats S Tolerances Over Up to and including Alloy Group I Alloy Group II 10 a 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
16、 120 0,65 1,0 120 150 0,80 1,2 150 180 1,0 1,4 180 220 1,15 1,7 a Including width across flats 10 mmPage 9 EN 603-3:2000 %6, 6.3.2 Corner radius 6.3.2.1 When a corner radius is specified by the purchaser, the maximum allowable deviation from the specified corner radius shall be as specified in Table
17、 6. Table 6 Maximum allowable deviation from specified corner radius Specified corner radius mm Maximum allowable deviation from specified corner radius 5 0,50 mm 5 10 % 6.3.2.2 When a corner radius is not specified by the purchaser, the sharp edges may be slightly rounded. The maximum allowable cor
18、ner radius shall be as specified in Table 7. Table 7 Maximum corner radius Dimensions in millimetres Width across flats S Maximum corner radius Over Up to and Including Alloy Group I Alloy Group II 10 a 25 1,0 1,5 25 50 1,5 2,0 50 80 2,0 2,5 80 120 2,5 3,0 120 180 3,0 4,0 180 220 3,5 5,0 a Including width across flats 10 mm 6.3.3 Perpendicularity The maximum deviation from perpendicularity z shall be as specified in Table 8. The deviation from perpendicularity shall be measured as shown in Figure 2. Figure 2 Measurement of deviation from perpendicularity
