SANS 903-2010 Aluminium alloy corrugated and troughed sheets《铝合金波纹板和槽形板》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-19864-0 SANS 903:2010Edition 4SOUTH AFRICAN NATIONAL STANDARD Aluminium alloy corrugated and troughed sheets Published by SABS Standards D

4、ivision 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 903:2010 Edition 4 Table of changes Change No. Date Scope Acknowledgement The SABS Standards Division wishes to acknowledge the valuable assistance derived from vario

5、us firms and organizations and from publications issued by the British Standards Institution. Foreword This South African standard was approved by National Committee SABS SC 59F, Construction standards Steel and aluminium structures, in accordance with procedures of the SABS Standards Division, in c

6、ompliance with annex 3 of the WTO/TBT agreement. This document was published in February 2010. This document supersedes SABS 903:1978 (second revision). Annex A forms an integral part of this document. Annex B is for information only. SANS 903:2010 Edition 4 1 Contents Page Acknowledgement Foreword

7、1 Scope . 3 2 Normative references . 3 3 Definitions 4 4 Requirements . 4 5 Marking 7 6 Sampling and compliance with the standard . 7 7 Inspection and testing 8 Annex A (normative) Notes to purchasers . 15 Annex B (informative) Recommendations for the use of aluminium alloy corrugated and troughed s

8、heets 15 Bibliography 17 SANS 903:2010 Edition 4 2 This page is intentionally left blank SANS 903:2010 Edition 4 3 Aluminium alloy corrugated and troughed sheets 1 Scope This standard covers four types of straight corrugated, and six types of straight troughed aluminium alloy sheets. NOTE Recommenda

9、tions for the use of aluminium alloy corrugated and troughed sheets are given in annex B. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition

10、 of the referenced document (including any amendments) applies. Information on currently valid national and international standards can be obtained from the SABS Standards Division. ASTM B 209, Standard specification for aluminium and aluminium-alloy sheet and plate. SANS 6892/ISO 6892, Metallic mat

11、erials Tensile testing at ambient temperature. SANS 7799/ISO 7799, Metallic materials Sheet and strip 3 mm thick or less Reverse bend test. SANS 7801/ISO 7801, Metallic materials Wire Reverse bend test. SANS 8491/ISO 8491, Metallic materials Tube (in full section) Bend test. SANS 8492/ISO 8492, Meta

12、llic materials Tube Flattening test. SANS 8493/ISO 8493, Metallic materials Tube Drift-expanding test. SANS 8494/ISO 8494, Metallic materials Tube Flanging test. SANS 8495/ISO 8495, Metallic materials Tube Ring-expanding test. SANS 8496/ISO 8496, Metallic materials Tube Ring tensile test. SANS 51676

13、/EN 1676, Aluminium and aluminium alloys Alloyed ingots for remelting Specifications. SANS 903:2010 Edition 4 4 3 Definitions For the purposes of this document, the following definitions apply. 3.1 defective sheet that fails in one or more respects to comply with the relevant requirements of the sta

14、ndard 3.2 lot not more than 600 linear metres of sheet of the same profile, batch identification, and (when relevant) type, size, and thickness, from one manufacturer, submitted at any one time for inspection and test 4 Requirements 4.1 Chemical composition When tested in accordance with 7.2.2, the

15、chemical composition of the sheets shall comply with the requirements given in table 1 or the requirements for 3004 alloy of ASTM B 209 or as specified by the purchaser (see annex A). Table 1 Chemical composition 1 2 Mineral content % Copper, max. Magnesium, max. Zinc, max. 0,2 3,0 0,25 Silicon, max

16、. Iron, max. Manganese, max. 0,6 0,7 1,5 Aluminium Remainderaa Except that titanium and other gain-refining elements may be present in quantities that do not aggregate more than 0,20 %. 4.2 Tensile strength The tensile strength, determined in accordance with 7.2.3, shall be at least 175 N/mm2. 4.3 R

17、esistance to bending When tested in accordance with 7.2.4, the test specimen shall not crack. 4.4 Thickness The nominal thickness of the sheets shall be one of those given in table 2, as specified by the purchaser (see annex A), and, when measured in accordance with 7.2.1.1, the actual thickness sha

18、ll conform to the appropriate values given in table 2. SANS 903:2010 Edition 4 5 Table 2 Thicknesses Dimensions in millimetres1 2 3 Actual thickness Nominal thickness max. min. 1,2 0,90 0,80 1,28 0,98 0,87 1,12 0,82 0,73 0,70 0,60 0,60 0,77 0,66 0,55 0,63 0,54 0,45 0,40 0,45 0,35 4.5 Number of corru

19、gations or pitches 4.5.1 Corrugated sheets Corrugated sheets shall have 8, 10, 12, or 14 corrugations, as specified by the purchaser (see annex A). 4.5.2 Troughed sheets a) Type A sheets shall have 4, 5, or 7 pitches, as specified by the purchaser (see annex A). b) Type B sheets shall have 4 or 6 pi

20、tches, as specified by the purchaser (see annex A). c) Type C sheets shall have 4 pitches. 4.6 Width The width of the sheets, measured in accordance with 7.2.1.3, shall be one of the following values, as relevant: a) Corrugated sheets. The distance between the crowns of the outermost corrugations sh

21、all be as given in table 3. Table 3 Distance between crowns of corrugated sheets 1 2 Distance between crowns Number of corrugations mm 8 10 12 610 5 760 5 910 7 14 1 060 7 b) Troughed sheets. The distance between the centres of the tops of the outermost ridges shall be as given in table 4. SANS 903:

22、2010 Edition 4 6 Table 4 Distance between the centres of the tops of the outermost ridges of troughed sheets 1 2 3 Distance between centre of outermost ridges Type Pitches mm A 4 5 7 508 5 635 5 889 7 B 4 5 610 5 915 7 C 668 5 4.7 Profile, depth of corrugations and troughs, and lip 4.7.1 The profile

23、 of the corrugations or troughs shall conform to that shown in figure 1, 2, 3, or 4 (as relevant) and, when measured in accordance with 7.2.1.5, the depth of the corrugations or troughs shall be as given in table 5. Table 5 Depth of the corrugations or troughs 1 2 Depth of the corrugations or trough

24、s Sheet mm Corrugated sheets 19 2 Troughed sheets, types A and B 38 2 Troughed sheets, type C 40 2 4.7.2 In the case of troughed sheets, the lip (see figures 2, 3, and 4) shall measure at least 14 mm, and on any one side of a sheet the difference between the maximum and minimum of the lip shall not

25、exceed 7 mm. 4.8 Length When measured in accordance with 7.2.1.2, the length of corrugated or troughed sheets shall be as specified by the purchaser (see annex A), subject to a tolerance of 15 mm for any length of sheet. 4.9 Squareness When measured in accordance with 7.2.1.4, the distances between

26、diagonally opposite corners of the sheet shall not differ by more than 10 mm in the case of sheets of nominal length not exceeding 6 m and more than 15 mm in the case of longer sheets. 4.10 Freedom from defects The sheets shall be clean and free from defects that would adversely affect their use. SA

27、NS 903:2010 Edition 4 7 4.11 Finish Unless otherwise specified by the purchaser (see annex A), the finish shall be mill finish. 5 Marking Each sheet shall bear the following information in legible and durable marking: a) the manufacturers name or trademark (or both); b) the thickness of the sheet, i

28、n millimetres; and c) the batch identification. 6 Sampling and compliance with the standard 6.1 Sampling NOTE 1 This clause applies to the sampling for inspection and testing before acceptance or rejection of single lots (consignments) in cases where no information about the implementation of qualit

29、y control or testing during manufacture is available to help in assessing the quality of the lot. It is also used as the procedure for adjudicating in cases of dispute. NOTE 2 The sampling procedure given in 6.1.1 can be applied in determining whether a lot complies with the relevant requirements of

30、 the standard. 6.1.1 Sample for inspection and dimensional tests From the lot take at random the number of sheets shown in column 2 of table 6 relative to the appropriate lot size shown in column 1. Table 6 Number of sheets per lot 1 2 Lot size number of sheets Sample size 1216120602001 2 3 200 4 6.

31、1.2 Sample for other tests From the sample taken in accordance with 6.1.1, take at random one sheet. 6.2 Compliance with the standard The lot shall be deemed to comply with the requirements of the standard if, after inspection and testing of the samples taken in accordance with 6.1.1, no defective i

32、s found. SANS 903:2010 Edition 4 8 7 Inspection and testing 7.1 Inspection Inspect the sample taken in accordance with 6.1.1 for compliance with 4.10, 4.11, and clause 5. 7.2 Testing 7.2.1 Dimensions 7.2.1.1 Thickness Using a micrometer calliper, measure to the nearest 0,01 mm the thickness of each

33、sheet in the sample (see 6.1.1) at any point at least 10 mm from an edge and end of the sheet. Check for compliance with 4.4. 7.2.1.2 Length Measure to the nearest 1 mm the length of each sheet in the sample (see 6.1.1) along the centre line of the sheet. Check for compliance with 4.8. 7.2.1.3 Width

34、 7.2.1.3.1 Place each of the sheets in the sample (see 6.1.1) in turn on a flat rigid surface. 7.2.1.3.2 Choose at random a cross section of the sheet and if, because of the spring of the sheet, the undersides of the downwards corrugations or troughs are not all in contact with the supporting surfac

35、e, apply sufficient pressure to the upper surface of the sheet to bring these lower surfaces into full contact with the supporting surface. Ensure that the application of pressure causes no deformation of the sheet other than that needed to bring the corrugations or troughs into contact with the rig

36、id surface. 7.2.1.3.3 Place the width gauge appropriate to the type of sheet being tested (see figure 5 or 6, or 7, as relevant) across the sheet at the chosen cross section and at right angles to the sides of the sheet and adjust the gauge to fit firmly over the outermost corrugations or troughs. C

37、lamp the gauge by tightening the butterfly nuts on the welded-in bolts and, by checking the position of the index mark, determine whether the width of the sheet complies with the requirements of 4.6. 7.2.1.3.4 Retain the width gauge in position until the depths of the corrugations and troughs have b

38、een measured (see 7.2.1.5). 7.2.1.4 Squareness Measure to the nearest 1 mm the distances between the diagonally opposite corners of each sheet in the sample (see 6.1.1) and record to the nearest 1 mm any difference between the two measurements on a sheet. 7.2.1.5 Depth of corrugations and troughs an

39、d lip 7.2.1.5.1 With the sheet in contact with a flat surface, and the width gauge in position as described in 7.2.1.3, place a straight-edge on edge across the sheet so that it rests on the crests of two adjoining corrugations or ridges, as relevant, in a position near the width gauge, but far SANS

40、 903:2010 Edition 4 9 enough from the points at which pressure is applied to the sheet to ensure that the means of applying pressure does not obstruct the measurement of the depth of the corrugation or trough. 7.2.1.5.2 Using a graduated rule with its lower end rounded to a curve of radius not excee

41、ding 10 mm, measure to the nearest 1 mm the greatest distance between the lower edge of the straightedge and the bottom of the trough or corrugation, as relevant, bridged by the straight-edge. NOTE Alternatively, a square-ended graduated rule may be used, provided that it is held with its width para

42、llel to the length of the corrugations or troughs and its thickness is such that the measurement of the depth of the corrugation or trough is not affected by the curved surface of the corrugation or trough. 7.2.1.5.3 Measure, as in 7.2.1.5.2, the depth of each of the remaining troughs or corrugation

43、s in the sheet. 7.2.1.5.4 Using a graduated rule, measure the lip. Check for compliance with 4.7. 7.2.2 Chemical composition Cut one suitably sized specimen from the sample (see 6.1.2), ensuring that the cutting instrument does not contaminate the specimen in any way. Use the methods described in SA

44、NS 51676 to determine the copper, silicon, magnesium, iron, zinc, manganese, and aluminium contents of the specimen. Check for compliance with 4.1. 7.2.3 Tensile strength 7.2.3.1 From the sample (see 6.1.2) prepare a tensile test specimen that complies with the requirements for specimens from sheet

45、or strip of SANS 6892 so that the length of the test specimen is cut transversely to the direction of rolling of the sheet. The portion of sheet from which the test piece is cut shall be carefully flattened and, in the case of a troughed sheet, the gauge length of the test specimen shall lie wholly

46、within the originally flat portion of the trough. 7.2.3.2 Determine the tensile strength of the test specimen in accordance with the relevant method given in SANS 6892. 7.2.3.3 If the tensile strength of the test specimen fails to comply with the specified tensile strength (see 4.2), prepare two fur

47、ther test specimens, and determine their tensile strengths. 7.2.3.4 If the tensile strengths of both these test specimens comply with the requirements, discard the result of the test on the first test specimen, but if the tensile strength of either of the additional test specimens fails to meet the

48、requirements, deem the sheet to be defective. 7.2.4 Bend test 7.2.4.1 From the sample (see 6.1.2) prepare a test specimen 10 mm wide, of convenient length, and cut with its length transverse to the direction of rolling of the sheet. Carefully round and smooth the longer edges of the specimen until t

49、hey are approximately semicircular in cross section (the thickness of the sheet being the diameter of the semi-circle). 7.2.4.2 Use the procedure described in SANS 7799, SANS 7801, SANS 8491, SANS 8492, SANS 8493, SANS 8494, SANS 8495 or SANS 8496 for the single-operation 180 bend test, using a mandrel of diameter equal to six times the nominal thickness of the sheet from which the test specimen was taken. SANS 903:2010 Edition 4 10 7.2.4.3 Examine the specimen (at the bend) for cracks. If the test