1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1592-2 : 1998 The E
2、uropean Standard EN 1592-2 : 1997 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 HF seam welded tubes Part 2. Mechanical propertiesThis British Standard, having been prepared under the direction
3、 of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1998 BSI 1998 ISBN 0 580 28819 6 BS EN 1592-2 : 1998 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is the English lan
4、guage version of EN 1592-2 : 1997 published by the European Committee for Standardization (CEN). Together with BS EN 1592-1 : 1998, BS EN 1592-3 : 1998 and BS EN 1592-4 : 1998 it supersedes BS 4300-1 : 1967 which is withdrawn. The UK participation in its preparation was entrusted by Technical Commit
5、tee NFE/35, Light metals and their alloys, to Subcommittee NFE/35/5, Wrought aluminium and aluminium alloys, which has the responsibility 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
6、 UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European public
7、ations referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from
8、 legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36,
9、 B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1592-2 : 1997 E EUROPEAN STANDARD EN 1592-2 NORME EUROPE ENNE EUROPA ISCHE NORM October 1997 ICS 77.150.10 Descriptors: Aluminium, aluminium alloys, aluminium tu
10、bes, welded tubes, wrought products, mechanical properties, tension tests, flattening tests, drift expanding tests, bend tests, testing conditions English version Aluminium and aluminium alloys HF seam welded tubes Part 2: Mechanical properties Aluminium et alliages daluminium Tubes e lectrosoude s
11、HF Partie 2: Caracte ristiques me caniques Aluminium und Aluminiumlegierungen HF- la ngsnahtgeschweite Rohre Teil 2: Mechanische Eigenschaften This European Standard was approved by CEN on 19 September 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th
12、e 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 Central Secretariat or to any CEN member. This European Standard exists in
13、 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies o
14、f Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1592-2 : 1997 BSI 1998 Foreword This European Standard has been prepared by Technical Committee C
15、EN/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 April 1998, and conflicting national standards shall be withdr
16、awn at the latest by April 1998. Within its programme of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 12, HF seam welded tubes, to prepare the following standard: EN 1592-2 Aluminium and aluminium alloys HF seam welded tubes Part 2: Mechanical properties This standard is part of a se
17、ries of four standards. The other standards deal with: EN 1592-1 Aluminium and aluminium alloys HF seam welded tubes Part 1: Technical conditions for inspection and delivery EN 1592-3 Aluminium and aluminium alloys HF seam welded tubes Part 3: Tolerances on dimensions and form for circular tubes EN
18、1592-4 Aluminium and aluminium alloys HF seam welded tubes Part 4: Tolerances on dimensions and form for square, rectangular and shaped tubes According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standa
19、rd: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Tensile test 3 3.1 Specimen and test p
20、iece 3 3.2 Testing conditions 3 3.3 Mechanical properties for class A alloys 3 4 Flattening test 3 4.1 General 3 4.2 Principle 3 4.3 Testing equipment 3 4.4 Test piece 3 4.5 Procedure 5 4.6 Test results 5 4.7 Test report 5 5 Drift expanding test (flaring) 6 5.1 General 6 5.2 Principle 6 5.3 Symbols,
21、 designations and unit 6 5.4 Testing equipment 6 5.5 Test piece 6 5.6 Procedure 6 5.7 Test results 6 5.8 Test report 7 6 Bend test 7 6.1 General 7 6.2 Principle 7 6.3 Symbols, designations and units 7 6.4 Testing equipment 7 6.5 Test piece 7 6.6 Procedure 8 6.7 Test results 8 6.8 Test report 8 Annex
22、es A (normative) Rules for rounding 9 B (informative) Bibliography 9Page 3 EN 1592-2 : 1997 BSI 1998 1 Scope This Part of EN 1592 specifies the mechanical properties of wrought aluminium alloy HF seam welded tubes for general engineering applications. It is not applicable to irrigation and heat exch
23、anger tubes. The chemical composition limits of these materials are given in EN 573-3. Mechanical property limits are specified for all class A alloys, as defined in EN 573-4. The definitions of temper designations are specified in EN 515. 2 Normative references This European Standard incorporates b
24、y dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Stan
25、dard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 515 Aluminium and aluminium alloys Wrought products Temper designations EN 573-3 Aluminium and aluminium alloys Chemical composition and form of wrought pr
26、oducts Part 3: Chemical composition EN 573-4 Aluminium and aluminium alloys Chemical composition and form of wrought products Part 4 : Forms of products EN 1592-1 Aluminium and aluminium alloys HF seam welded tubes Part 1: Technical conditions for inspection and delivery EN 10002-1 Metallic material
27、s Tensile testing Part 1: Method of test (at ambient temperature) NOTE. Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex B. 3 Tensile test 3.1 Specimen and test piece The selection,
28、preparation and number of specimens and test pieces shall be in accordance with EN 1592-1. 3.2 Testing conditions The tensile test shall be carried out in accordance with EN 10002-1 and the following: during testing to determine proof stress, the rate of stress application shall not exceed 12 MPa/s.
29、 After removal of the extensometer, the rate of straining may be increased but it shall not exceed 50 % of the length of the reduced section per minute; elongation shall be measured using an original gauge length L 0 = 5,65 ; S 0 for determination of compliance, proof stress and tensile strength val
30、ues shall be rounded to the nearest 1 MPa and elongation values to the nearest 1 % using the rounding rules set out in annex A. 3.3 Mechanical properties for class A alloys The mechanical properties of all class A alloys are specified in table 1. HF seam welded tubes may be produced in other tempers
31、 not specified in table 1. The corresponding mechanical properties shall be agreed between the producer and purchaser. 4 Flattening test 4.1 General The tube shall be able to withstand plastic deformation in flattening. NOTE. The test is based on EN 10233 (see annex B, 1). It applies to circular tub
32、es with an outside diameter not greater than 200 mm and a thickness not greater than 15 % of the outside diameter. It can also, if agreed between producer and purchaser at time of order, apply to square, rectangular and shaped tubes. This test is essentially used to reveal potential defects in the w
33、eld area. 4.2 Principle A test piece cut from a tube, is flattened in a direction perpendicular to the longitudinal axis of the tube until the distance between the platens, measured under load, reaches the value agreed between the producer and purchaser. 4.3 Testing equipment The equipment used for
34、the test shall be capable of flattening the test piece between two parallel rigid platens. 4.4 Test piece The length of the test piece shall be at least 1,5 times the outside diameter of the tube.Page 4 EN 1592-2 : 1997 BSI 1998 Table 1. Mechanical properties for class A alloys Alloy designation Tem
35、per 1) R m R p0,2 A 2) MPa MPa % Numerical Chemical symbols min. min. min. EN AW-3004 EN AW-Al Mn1Mg1 Hx25 190 145 8 Hx45 220 180 6 Hx65 240 200 4 Hx85 250 220 3 EN AW-3005 EN AW-Al Mn1Mg0,5 Hx45 200 175 7 Hx65 210 185 5 Hx85 220 195 4 EN AW-3103 EN AW-Al Mn1 Hx65 170 150 3 Hx85 190 170 2 EN AW-5005
36、 EN AW-Al Mg1(B) Hx65 170 140 4 Hx85 190 180 3 EN AW-5040 EN AW-Al Mg1,5Mn O 170 90 14 Hx25 190 130 12 Hx45 210 160 10 Hx65 230 190 7 Hx85 250 220 5 EN AW-5049 EN AW-Al Mg2Mn0,8 Hx25 220 170 10 Hx45 235 200 7 Hx65 250 230 5 Hx85 270 250 3 EN AW-5251 EN AW-Al Mg2 Hx25 210 160 8 Hx45 230 190 6 Hx65 24
37、5 210 5 EN AW-5454 EN AW-Al Mg3Mn Hx65 290 260 4 Hx85 310 280 3 EN AW-5754 EN AW-Al Mg3 O 190 70 17 Hx25 220 170 9 Hx65 255 225 4 EN AW-5083 EN AW-Al Mg4,5Mn0,7 O 275 115 16 Hx85 420 380 4 EN AW-5086 EN AW-Al Mg4 O 240 100 15 Hx25 270 170 9 Hx45 300 220 7 Hx65 320 260 5 Hx85 350 320 3 EN AW-7075 EN
38、AW-Al Zn5,5MgCu O 190 100 15 T6 530 460 10 T81 550 500 8 1) The letter x stands for digit 1, 2 or 3 depending on the final operation to which the tube is subjected i.e.: 1 if mechanical properties are obtained directly by tubing operation; 2 when mechanical properties are obtained through a partial
39、annealing after tubing operation; 3 when mechanical properties are obtained through a partial annealing at lower temperature, for high Mg content 5000 series alloys (EN AW-5083, EN AW-5086). 2) Elongation values are not guaranteed for tubes with embossed surfaces. Testing conditions are specified in
40、 3.2.Page 5 EN 1592-2 : 1997 BSI 1998 Figure 1. Position of the weld fin Figure 2. Flattened tube 4.5 Procedure 4.5.1 Flatten the test piece under steadily increasing pressure, with the weld fin positioned at 908 to the flattening surfaces (see figure 1, position A), until the distance H between the
41、 platens (see figure 2) reaches the specified value, agreed between producer and purchaser. 4.5.2 A full flattening test (i.e. internal surfaces of the test piece coming into contact) can be required for a material in the fully annealed condition (O temper). In that case, the weld fin shall be posit
42、ioned in the direction of flattening, that is the weld shall be in the centre of the flattened zone (see figure 1, position B). For all other tempers, the gap between the platens shall be specified by the producer. 4.5.3 In general, the test shall be carried out at ambient temperature, between 108C
43、and 358C. 4.5.4 In case of dispute, the controlled temperature shall be 238C 58C, and the rate of movement of the platens whilst flattening shall not exceed 25 mm/min. 4.6 Test results 4.6.1 The test piece shall be removed from the testing equipment, then examined without magnifying aids. 4.6.2 Unle
44、ss otherwise specified on ordering, the acceptance criteria are as follows: the examination shall be primarily carried out on the welded area; absence of cracks is considered as evidence that the test piece passed the test; the two edges of the weld shall not look sunken or separated; a slight rough
45、ness in the welded area shall be considered acceptable. 4.6.3 In cases where a full flattening test is required, the acceptance criteria are as follows: no splits or deep cracks shall be visible in the most distorted area; slight deformation roughness and faint flow lines shall not be considered cau
46、se for rejection. 4.7 Test report The test report shall include the following information: a) reference to this standard; b) identification of the test piece; c) dimensions of the test piece; d) distance between platens; e) result of test.Page 6 EN 1592-2 : 1997 BSI 1998 5 Drift expanding test (flar
47、ing) 5.1 General The tubes shall be able to undergo plastic deformation in drift expansion. NOTE. The test is based on EN 10234 (see annex B, 2). It applies to tubes of circular or square (with rounded edges) cross section, with an outside diameter not greater than 100 mm and a minimum thickness of
48、1,0 mm. 5.2 Principle The end of a tube, or the end of a test piece cut from a tube, is expanded by means of a conical mandrel, until the maximum outside diameter of the expanded tube reaches the value specified in the order, as agreed with the producer, according to the alloy and temper of the tube
49、. 5.3 Symbols, designations and unit Symbols, designations and unit for the drift expanding test of tubes are given in figure 3 and in table 2. Figure 3. Drift expanding test Table 2. Symbols, designations and units Symbol Designation Unit D Original outside diameter of the tube mm t Wall thickness of the tube mm L Length of the test piece before the test mm D u Maximum outside diameter after testing mm b Angle of the mandrel degree 5.4 Testing equipment 5.4.1 The tes
