1、BRITISH STANDARD BS 4300-10: 1969 Incorporating Amendment No. 1 Specification for supplementary series Wrought aluminium and aluminium alloys For general engineering purposes 5454 Drawn tubeBS4300-10:1969 This British Standard, having been approved by the Non-ferrous Metals Industry Standards Commit
2、tee, was published underthe authority ofthe Executive Board on 31December1969 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference NFE/19 Draft for comment 68/29978 ISBN 580 05605 8 Co-operating organizations The Non-ferrous Metals Industry Standards Comm
3、ittee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Aluminium Federation* Association of Bronze and Brass Founders Association of Consulting Engineers Board of Trade Brit
4、ish Bronze and Brass Ingot Manufacturers Association British Electrical and Allied Manufacturers Association* British Lead Manufacturers Association British Non-ferrous Metals Federation British Non-ferrous Metals Federation High Conductivity Copper Group British Non-ferrous Metals Research Associat
5、ion* Copper Development Association Crown Agents for Oversea Governments and Administrations Electric Cable Makers Confederation Institute of British Foundrymen Institute of Metals* Institution of Mechanical Engineers (Automobile Division)* Institution of Mining and Metallurgy Institution of Product
6、ion Engineers Institution of Structural Engineers* Lead Development Association Light Metal Founders Association London Metal Exchange Magnesium Industry Council Ministry of Defence, Army Department Ministry of Defence, Navy Department* National Brassfoundry Association Non-ferrous metal stockists*
7、Post Office Royal Institute of British Architects* Society of British Aerospace Companies Society of Motor Manufacturers and Traders Ltd.* Tin Research Institute Zinc Development Association Individual manufacturers The Government departments and scientific and industrial organizations marked with a
8、n asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: ALARS (Association of Light Alloy Refiners and Smelters) Institute of Sheet Metal Engineering Lloyds Register of Shipping London Transport Bo
9、ard National Association of Drop Forgers and Stampers National Federation of Vehicle Trades Small Rivet Association Welding Institute Institute of Structural Engineers Amendments issued since publication Amd. No. Date of issue Comments 3387 June 1980 Indicated by a sideline in the marginBS4300-10:19
10、69 BSI 11-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii Scope 1 1 General requirements 1 1.1 General 1 1.2 Definitions 1 1.3 Freedom from defects 1 1.4 Chemical composition 1 1.5 Condition 1 1.6 Sizes and tolerances 1 1.7 Selection of test samples 1 1.8 Mechanical te
11、sts 2 1.9 Retests 2 1.10 Certificate of compliance 2 1.11 Inspection 2 1.12 Independent test 2 1.13 Facilities for testing 2 1.14 The rounding of numbers rule 2 2 Specific requirements 3 2.1 Chemical composition 3 2.2 Mechanical properties 3 Appendix A Details of the international alloy designations
12、 and chemical composition limits for wrought aluminium alloys system 8 Table 1 Tolerances on outside or inside diameter of drawn tube 4 Table 2 Tolerances on wall thickness of drawn tube 6 Table 3 Cutting to length tolerances for drawn tube 6 Table 4 Straightness tolerances for drawn tube 7 Table 5
13、Tolerances on shaped drawn tube 7BS4300-10:1969 ii BSI 11-1999 Foreword This standard makes reference to the following British Standards: BS 18, Methods for tensile testing of metals. BS 18-1, Non-ferrous metals. BS 1499, Sampling non-ferrous metals. BS 1728, Methods for the analysis of aluminium an
14、d aluminium alloys. BS 3660, Glossary of terms used in the wrought aluminium industry. This British Standard specification for drawn tube is one of a series of supplementary specifications for wrought aluminium and aluminium alloys, the preparation of which has been authorized by the Non-ferrous Met
15、als Industry Standards Committee. In reflection of the decision of the Government that British Industry should effect a complete change to the metric system by 1971 this specification is expressed in metric terms. For the convenience of users however equivalent properties have been cited in tonf/in
16、2units. Aluminium and aluminium alloy materials intended for general engineering use are the subject of specification in BS 1470BS 1475 whilst those intended for specialized use or which are of limited interest, are published in the supplementary engineering series. The latter series will be kept un
17、der frequent review, and if changed circumstances appear to warrant such, from time to time particular material specifications may be transferred from the supplementary to the general engineering series. As a major step towards alignment of aluminium and aluminium alloy compositions on an internatio
18、nal basis, a substantial number of countries have agreed to adopt a 4-digit classification for alloy composition designation. This system is administered by the Aluminium Association Inc., who issue the “Registration Record of International Alloy Designations and Chemical Composition Limits for Wrou
19、ght Aluminium Alloys”. By amendment, it has been decided to introduce this system into the British Standards concerned with these types of material in place of the material designations formerly used. The details of the system are given inAppendix A. The temper designations and associated mechanical
20、 property requirements remain unaltered for the present and therefore may not necessarily align precisely with those in the standards of other countries. The designation 5454 therefore replaces the former designation NT 51 (nearest ISO equivalent Al Mg3 Mn). Minor compositional changes have been mad
21、e. 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 Standard does not of itself confer immunity from legal obligations. Summary of pages This document compris
22、es a front cover, an inside front cover, pages i and ii, pages1 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4300-10:1969 BSI 11-199
23、9 1 Scope This British Standard relates to aluminium alloy drawn tube. 1 General requirements 1.1 General The drawn tube shall comply with the general requirements set out in the following clauses and with the appropriate requirements specified in Section 2. 1.2 Definitions For the purposes of this
24、British Standard, the following definitions apply: purchaser the party, whether user, retailer, wholesaler, or corporate body, or their agent(s) as appropriate, responsible for ordering the material standardized drawn tube 1) a hollow product of uniform wall thickness, produced by cold drawing from
25、tube bloom 1.3 Freedom from defects The material shall be free from defects prejudicial to its use. 1.4 Chemical composition The chemical composition shall comply with the requirements specified in2.1. 1.5 Condition The material shall be supplied in one of the following conditions as specified by th
26、e purchaser and cited in2.2. 1.6 Sizes and tolerances The tubes shall be of the dimensions shown inTable 1 andTable 2 and the tolerances shall comply with the following tables as appropriate: Table 1 Tolerances on outside or inside diameter. Table 2 Tolerances on wall thickness. Table 3 Tolerances o
27、n cutting to length. Table 4 Tolerances on straightness. Table 5 Tolerances on shaped tube. 1.7 Selection of test samples The tubes of the same dimensions, produced in the same way and of the same composition, shall be grouped in batches. The supplier shall sample each batch at such a rate that he c
28、an, on the results of the mechanical tests on the samples, certify that the material conforms to this specification. Before the test samples are cut off, they shall be marked to identify them with the batch they represent. The test samples shall be taken from the tubes as supplied and shall not be a
29、nnealed or mechanically worked (except for machining the test piece) before being tested. 1) Extracted from BS 3660 “Glossary of terms used in the wrought aluminium industry”. O Annealed. Material which is fully annealed to obtain the lowest strength condition. H2 H4 Strain hardened. Material subjec
30、ted to the application of cold work after annealing (or hot forming) or to a combination of cold work and partial annealing/stabilizing in order to secure the specified mechanical properties. The designations are in ascending order of tensile strength. BS4300-10:1969 2 BSI 11-1999 1.8 Mechanical tes
31、ts The following tests shall be made on test pieces prepared from test samples selected as specified in1.4. 1.8.1 Tensile test. The tensile test shall be made in accordance with BS 18-1 2) . The elongation shall be measured on a gauge length of5.65S oexcept in the case of tubes thicker than3mm where
32、 the elongation shall be measured on a50mm gauge length. 1.8.2 0.2% proof stress. The proof stress shall be determined as specified in BS 18-1 2) . 1.8.3 Flattening test. A test piece not less than 50 mm long, cut from each selected tube shall be flattened until the interior surfaces of the tube mee
33、t. 1.9 Retests Should any of the test pieces first selected fail to pass the mechanical tests, two further samples from the same batch shall be selected for testing, one of which shall be from the tube from which the original test sample was taken, unless that tube has been withdrawn by the supplier
34、. Should the test pieces from both these additional samples pass, the batch represented by the test samples shall be deemed to comply with this standard. Should the test pieces from either of these additional samples fail, the batch represented by the test samples shall be deemed not to comply with
35、this standard. 1.10 Certificate of compliance The supplier shall certify that the material complies with the requirements of this standard. 1.11 Inspection If the purchaser wishes to inspect the material at the suppliers works he shall notify the supplier at the time of placing the order. 1.12 Indep
36、endent test Should there be a dispute about the compliance of the material with regard to the composition or the test requirements of this standard, the purchaser and the supplier shall have the right to have tests made by a mutually acceptable testing authority. The results obtained by the independ
37、ent testing authority shall be accepted as final. If the material does not comply with this standard, the cost of independent testing shall be borne by the supplier; if the material complies with this standard the cost shall be borne by the purchaser. The method of sampling for analysis shall be in
38、accordance with BS 1499 3) , and the methods of analysis shall be in accordance with BS 1728 4) , where the appropriate method exists. 1.13 Facilities for testing The supplier shall make the necessary arrangements for carrying out the tests required by this standard. 1.14 The rounding of numbers rul
39、e For purposes of determining conformance to compositional limits and mechanical properties (not dimensional tolerances), an observed value or a calculated value obtained from analysis is rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit,
40、in accordance with the following. When the figure next beyond the last figure or place to be retained is less than5, the figure in the last place retained should be kept unchanged. When the figure next beyond the last figure or place to be retained is greater than5, the figure in the last place reta
41、ined should be increased by1. 2) BS 18, “Methods for tensile testing of metals,” Part 1, “Non-ferrous metals.” 3) BS 1499, “Sampling non-ferrous metals ”. 4) BS 1728, “Methods for the analysis of aluminium and aluminium alloys ”.BS4300-10:1969 BSI 11-1999 3 When the figure next beyond the last figur
42、e or place to be retained is5and a) there are no figures, or only zeros, beyond this5, if the figure in the last place to be retained is odd, it should be increased by1; if even, it should be kept unchanged; b) if the5next beyond the figure in the last place to be retained is followed by any figures
43、 other than zero, the figure in the last place retained should be increased by1, whether odd or even. 2 Specific requirements 2.1 Chemical composition limits 5) The chemical composition of material5454(former BS designation NT 51, nearest ISO equivalent AlMg3Mn) shall be as follows: 2.2 Mechanical p
44、roperties 2.2.1 Tensile test. The mechanical properties obtained from the test pieces selected in accordance with1.7 and prepared and tested in accordance with1.8 shall be as follows: 2.2.2 Flattening test. The test pieces selected in accordance with1.7 shall not crack when tested in accordance with
45、1.8.3. 5) Composition in per cent maximum unless shown as a range or a minimum. Silicon 0.25 Iron 0.40 Copper 0.10 Manganese 0.501.0 Magnesium 2.43.0 Chromium 0.050.20 Zinc 0.25 Titanium 0.20 Others a Each 0.05 Total 0.15 Aluminium Remainder a Analysis is regularly made only for the elements for whi
46、ch specific limits are shown. If, however, the presence of other elementsis suspected to be, or in the course of routine analysis is indicated to be, in excess of the specified limits, further analysis is made to determine that these other elements are not in excess of the amount specified. Imperial
47、 units Condition Wall thickness 0.2 % proof stress Tensile strength a Elongation on 50 mm or 5.65S o 0.2 % proof stress Tensile strength min. min. max. min. min. min. max. mm hbar b hbar b hbar b % tonf/in 2 tonf/in 2 O Up to and including 10 8.5 21.5 26.0 16 5.5 13.9 16.8 H2 Up to and including 10
48、16.5 24.5 29.5 8 10.7 15.8 19.1 H4 Up to and including 10 22.5 27.5 32.5 4 14.6 17.8 21.0 a Elongation on5.65S ofor tubes with a wall thickness of3mm and thinner, and on50mm for tubes with thicker walls. b 1hbar =10MN/m 2=10N/mm 2 .BS4300-10:1969 4 BSI 11-1999 Table 1 Tolerances on outside or inside
49、 diameter of drawn tube Nominal outside diameter Nominal wall thickness of tube(mm) 0.5 0.8 1.0 1.2 1.6 1.8 2.0 mm 5 10 14 20 25 0.13 0.13 0.13 0.16 0.19 0.13 0.13 0.13 0.14 0.16 0.13 0.13 0.13 0.14 0.15 0.13 0.13 0.13 0.14 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 30 35 40 45 50 0.18 0.21 0.24 0.16 0.17 0.18 0.22 0.26 0.15 0.16 0.17 0.20 0.22 0.14 0.15 0.16 0.17 0.19 0.14 0.15 0.15 0.16 0.17 0.14 0.14 0.15 0.16 0.16 55 60 65 70 75 0.30 0.26 0.28 0.31 0.21 0.23 0.26 0.29 0.33 0.19 0.21 0.23 0.25 0.28 0.1
