1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 5952:2011Continuously hot-rolled steelsheet of structural qualitywith improved atmosphericcorrosion resistanceBS ISO 5952:2011 BRITISH STANDARDNational forewordThis Britis
2、h Standard is the UK implementation of ISO 5952:2011. Itsupersedes BS ISO 5952:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/109, Coated and Uncoated Flat Products to be Usedfor Cold Forming.A list of organizations represented on this committ
3、ee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 68608 5ICS 77.140.50Compliance with a British Standard cannot confer immunity fromlegal oblig
4、ations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2011.Amendments issued since publicationDate Text affectedBS ISO 5952:2011Reference numberISO 5952:2011(E)ISO 2011INTERNATIONAL STANDARD ISO5952Fourth edition2011-02-15Continuousl
5、y 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 5952:2011ISO 5952:2011(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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8、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 rights reserved. Unless otherwise spec
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10、ase 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 5952:2011ISO 5952:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3
11、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 Marking.7 15 Information to be supplied
12、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 ISO 5952:2011ISO 5952:2011(E) iv ISO
13、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 committees. Each member body interested in
14、 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 International Electrotechnical Commiss
15、ion (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 Standards adopted by the technical
16、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 subject of patent rights. ISO shall
17、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 5952:2005), which has been technically revis
18、ed. BS ISO 5952:2011INTERNATIONAL 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-rolled steel sheet (see 3.2) of struc
19、tural 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 and increased resistance to atmospheri
20、c 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 cut lengths. 1.3 Hot-rolled sheet le
21、ss 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”. 1.4 This International Standard doe
22、s 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 resistance (see ISO 4952); steels designat
23、ed 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 for the application of this document
24、. 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 materials Tensile testing Part 1: Metho
25、d of test at room temperature ISO 16160, Continuously hot-rolled steel sheet products Dimensional and shape tolerances BS ISO 5952:2011ISO 5952:2011(E) 2 ISO 2011 All rights reserved3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 improved atm
26、ospheric 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 The degree of corrosion resistance is b
27、ased 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 hot-rolling operation. 3.3 hot-rolled
28、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 without any definite contour produced dur
29、ing 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 necessarily provide a definite positioning of t
30、he 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, adherence and colour. Removal of the oxide o
31、r 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 unoiled, if required. The oil is not intende
32、d 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 5952:2011ISO 5952:2011(E) ISO 2011 All rights reserved 35 Conditions of manufacture 5.1 Steelmaking Unless otherwise a
33、greed 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 chemical composition (heat analysis) shall co
34、nform 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 Chemical analysis 5.3.1 Heat analysis An an
35、alysis 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 Chemical composition (heat analysis) (normal s
36、tandard compositions, see 5.2) Values in percent Grade ClassaMethodbC 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 to0,40 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 0,65 0,035 max. 0,035 max. 0,30 to 0,50 0,05
37、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. 0,15 max. HSA 365W B D NE CS 0,18 max. 1,
38、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 steels are intended for use in welded stru
39、ctures 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 used for structures or structural parts wh
40、ere, 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 0,15 %. BS ISO 5952:2011ISO 5952:2011(E) 4 I
41、SO 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 deviation limits shall be agreed upon between the i
42、nterested 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 Phosphorous 0,15 0,01 Sulfur 0,035 0,010 Co
43、pper 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 desirable that the specified product be id
44、entified 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 available for shipment, the mechanical properties
45、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 resistance of these steels to atmospheric corros
46、ion 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 surrounding atmosphere, design, etc., over
47、 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 structural quality with improved atmospheric c
48、orrosion resistance shall be as given in ISO 16160. BS ISO 5952:2011ISO 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. A lot consists of 50 t or less of sheet of
49、 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 ClassaRebmin. MPa RmMPa Acmin % Nominal thickness e 6 mm 3 W3 Lo= 50 Lo= 80oo5, 65L S= Lo= 50 oo5, 65L S= Lo= 200mm mm mm mm mm mm mm mm HSA 235W B and D 235 360 to 510 340 to 470 20 18 24 22 24 17 HSA 245W B and D 245 4
