1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 5952:2011 Continuously hot-rolled steel sheet of structural quality with improved atmospheric corrosion resistanceBS ISO 5952:2011 BRITISH STANDARD National foreword Th
2、is British Standard is the UK implementation of ISO 5952:2011. It supersedes BS ISO 5952:2005 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/109, Coated and Uncoated Flat Products to be Used for Cold Forming. A list of organizations represented o
3、n this committee can be obtained 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. BSI 2011 ISBN 978 0 580 68608 5 ICS 77.140.50 Compliance with a British Standard cannot confer imm
4、unity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2011. Amendments issued since publication Date Text affectedBS ISO 5952:2011Reference number ISO 5952:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 5952 Fourt
5、h edition 2011-02-15 Continuously hot-rolled steel sheet of structural quality with improved atmospheric corrosion resistance Tles en acier de construction lamines chaud en continu rsistance amliore la corrosion atmosphrique BS ISO 5952:2011 ISO 5952:2011(E) PDF disclaimer This PDF file may contain
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8、ers were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2011 All right
9、s reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the
10、requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS ISO 5952:2011 ISO 5952:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1
11、 Scope1 2 Normative references1 3 Terms and definitions .2 4 Surface characteristics.2 5 Conditions of manufacture.3 6 Dimensional tolerances 4 7 Tensile test sampling5 8 Tensile test requirements.5 9 Retests6 10 Resubmission 6 11 Workmanship.6 12 Inspection and acceptance 6 13 Coil size 7 14 Markin
12、g.7 15 Information to be supplied by the purchaser .7 Annex A (informative) Guidelines for estimating the atmospheric corrosion resistance of low- alloy steels .9 Annex B (informative) Additional information for the use of steel with improved atmospheric corrosion resistance .10 Bibliography11 BS IS
13、O 5952:2011 ISO 5952:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical commit
14、tees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the In
15、ternational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International
16、 Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the
17、subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 5952 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 12, Continuous mill flat rolled products. This fourth edition cancels and replaces the third edition (ISO 5952:200
18、5), which has been technically revised. BS ISO 5952:2011 INTERNATIONAL STANDARD ISO 5952:2011(E) ISO 2011 All rights reserved 1Continuously hot-rolled steel sheet of structural quality with improved atmospheric corrosion resistance 1 Scope 1.1 This International Standard applies to continuously hot-
19、rolled steel sheet (see 3.2) of structural quality with improved atmospheric corrosion resistance, also known as weather-resistant structural steel. It is produced in the grades and classes listed in Table 1. The product is intended for applications where requirements are for mechanical properties a
20、nd increased resistance to atmospheric corrosion. It is generally used in the delivered condition and is intended for bolted, riveted or welded structures. 1.2 This product is commonly produced in the range of thicknesses 1,6 mm up to and including 12,5 mm and widths of 600 mm and over, in coils and
21、 cut lengths. 1.3 Hot-rolled sheet less than 600 mm wide can be slit from wide sheet and will be considered as sheet. NOTE Hot-rolled sheet up to but not including 3 mm in thickness is commonly known as sheet. Hot-rolled sheet 3 mm and over in thickness is commonly known as either “sheet” or “plate”
22、. 1.4 This International Standard does not cover the following steel qualities: steels intended for boilers or pressure vessels, or steels designated as commercial quality or drawing qualities (see ISO 3573); steels produced on reversing mills and designated with improved atmospheric corrosion resis
23、tance (see ISO 4952); steels designated with structural quality (see ISO 4995), or high yield strength structural quality (see ISO 4996); steels designated with higher yield strength with improved formability (see ISO 5951). 2 Normative references The following referenced documents are indispensable
24、 for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 148-1, Metallic materials Charpy pendulum impact test Part 1: Test method ISO 6892-1, Metallic ma
25、terials Tensile testing Part 1: Method of test at room temperature ISO 16160, Continuously hot-rolled steel sheet products Dimensional and shape tolerances BS ISO 5952:2011 ISO 5952:2011(E) 2 ISO 2011 All rights reserved3 Terms and definitions For the purposes of this document, the following terms a
26、nd definitions apply. 3.1 improved atmospheric corrosion resistance a characteristic achieved by intentional addition of a certain number of alloying elements, such as P, Cu, Cr, Ni, etc., providing a chemical composition which promotes the formation of a protective oxide layer on the product NOTE T
27、he degree of corrosion resistance is based on data acceptable to the purchaser. 3.2 hot-rolled steel sheet product obtained by rolling heated steel through a continuous-type wide strip mill to the required sheet thickness NOTE The product has a surface covered with oxide or scale resulting from the
28、hot-rolling operation. 3.3 hot-rolled descaled steel sheet hot-rolled steel sheet from which oxide or scale has been removed by pickling in an acid solution or by mechanical means such as grit blasting NOTE Some change in properties can result from mechanical descaling. 3.4 mill edge normal edge wit
29、hout any definite contour produced during hot rolling NOTE Untrimmed edges may contain some irregularities, such as cracked or torn edges or thin (feathered) edges. 3.5 sheared edge normal edge obtained by shearing, slitting or trimming a mill edge product NOTE 1 Normal processing does not necessari
30、ly provide a definite positioning of the slitting burr. NOTE 2 Material is normally supplied as described in 3.4 and 3.5. Other edges may be supplied as agreed upon. 4 Surface characteristics 4.1 Surface condition Oxide or scale in hot-rolled steel sheet is subject to variations in thickness, adhere
31、nce and colour. Removal of the oxide or scale by pickling or blast cleaning may disclose surface imperfections not readily visible prior to this operation. 4.2 Oiling As a deterrent to rusting, a coating of oil is usually applied to hot-rolled, descaled steel sheet, but sheet may be furnished unoile
32、d, if required. The oil is not intended as a forming lubricant and shall be easily removable with degreasing chemicals. When requested, the manufacturer shall advise the purchaser which type of oil has been used. BS ISO 5952:2011 ISO 5952:2011(E) ISO 2011 All rights reserved 35 Conditions of manufac
33、ture 5.1 Steelmaking Unless otherwise agreed upon, the processes used in making the steel and in manufacturing hot-rolled sheet are left to the discretion of the manufacturer. On request, the purchaser shall be informed of the steelmaking process being used. 5.2 Chemical composition 5.2.1 The chemic
34、al composition (heat analysis) shall conform to the values given in Table 1, unless otherwise agreed between the interested parties. 5.2.2 When selecting the grade or chemical composition to be used, attention should be directed to the appropriate welding procedure to be followed (see 5.4). 5.3 Chem
35、ical analysis 5.3.1 Heat analysis An analysis of each heat of steel shall be made by the manufacturer to determine compliance with the requirements given in Table 1. When requested at the time of ordering, this analysis shall be reported to the purchaser or his or her representative. Table 1 Chemica
36、l composition (heat analysis) (normal standard compositions, see 5.2) Values in percent Grade Class aMethod bC Mn Si P S Cu Ni Cr Mo Zr HSA 235W B D NE CS 0,13 max. 0,20 to 0,60 0,100 to 0,40 0,040 max. 0,035 max. 0,25 to 0,55 0,65 max. 0,40 to 0,80 HSA 245W B D NE CS 0,18 max. 1,25 max. 0,15 to 0,6
37、5 0,035 max. 0,035 max. 0,30 to 0,50 0,05 to 0,30 0,45 to 0,75 c c HSA 355W1 A D NE CS 0,12 max. 1,00 max. 0,20 to 0,75 0,06 to 0,15 0,035 max. 0,25 to 0,55 0,65 max. 0,30 to 1,25 HSA 355W2 C D NE CS 0,16 max. 0,50 to 1,50 0,50 max. 0,035 max. 0,035 max. 0,25 to 0,55 0,65 max. 0,40 to 0,80 0,30 max.
38、 0,15 max. HSA 365W B D NE CS 0,18 max. 1,40 max. 0,15 to 0,65 0,035 max. 0,035 max. 0,30 to 0,50 0,05 to 0,30 0,45 to 0,75 c c NOTE Each grade can contain one or more microalloying elements, such as vanadium, titanium, niobium, etc. aClass A steels satisfy only moderate loading conditions. Class B
39、steels are intended for use in welded structures or structural parts, subjected to normal loading conditions. Class C steels are to be used in cases where, owing to loading conditions and the general design of the structure, some resistance to brittle fracture is necessary. Class D steels are to be
40、used for structures or structural parts where, owing to loading conditions and the general design of the structure, a high resistance to brittle fracture is necessary. bNE non-rimming CS aluminium killed (0,020 % minimum total aluminium) cThe total content of Mo, Nb, Ti, V and Zr is not to exceed 0,
41、15 %. BS ISO 5952:2011 ISO 5952:2011(E) 4 ISO 2011 All rights reserved5.3.2 Product analysis A product analysis may be made by the purchaser to verify the specified analysis of the product and shall take into consideration any normal heterogeneity. For killed steels, the sampling method and deviatio
42、n limits shall be agreed upon between the interested parties at the time of ordering. See Table 2. Table 2 Product analysis tolerances Values in percent Element Maximum of specified element, Tolerance over maximum specified, Carbon u0,15 0,15 to 0,18 0,03 0,04 Manganese u0,60 0,60 to 1,50 0,03 0,05
43、Phosphorous 0,15 0,01 Sulfur 0,035 0,010 Copper 0,55 0,03 Nickel 0,65 0,03 Chromium 1,25 0,04 Molybdenum 0,30 0,01 5.4 Weldability This product is suitable for welding if appropriate welding conditions are selected. See the recommendations given in IIS/IIW 382-71 as an example. 5.5 Application It is
44、 desirable that the specified product be identified for fabrication by name of the part or by intended application. Proper identification of the part may include visual examination, prints or description, or a combination of these. 5.6 Mechanical properties At the time that the steel is made availab
45、le for shipment, the mechanical properties shall be as stated in Table 3 when they are determined on test pieces obtained according to the requirements of Clause 8. Any additional property requirements specified or required are subject to agreement before ordering. 5.7 Corrosion resistance The resis
46、tance of these steels to atmospheric corrosion is due to the formation of a protective oxide layer. The formation of this protective layer depends not only on chemical composition, such as the distinctive differences between the analyses of the various grades, but also on a number of factors such as
47、 surrounding atmosphere, design, etc., over which the steel producer has no control. See Annexes A and B for information on estimating the corrosion resistance and cautions concerning the use of these steels. 6 Dimensional tolerances Dimensional tolerances applicable to hot-rolled steel sheet of str
48、uctural quality with improved atmospheric corrosion resistance shall be as given in ISO 16160. BS ISO 5952:2011 ISO 5952:2011(E) ISO 2011 All rights reserved 57 Tensile test sampling One representative sample for the tensile test required in Table 3 shall be taken from each lot of sheet for shipment
49、. A lot consists of 50 t or less of sheet of the same designation rolled to the same thickness and condition. 8 Tensile test requirements The tensile test shall be carried out in accordance with ISO 6892-1. Transverse test pieces shall be taken mid- way between the centre and edge of the sheet as rolled. Table 3 Mechanical properties Grade Class aR e bmin. MPa R mMPa A cmin % Nominal thickness e 6 mm 3 W3 L o= 50 L o= 80 oo 5, 65 L S = L o= 50 oo 5, 65 L S = L o= 200mm mm mm mm mm mm mm mm HSA 235W B and D 235
