1、BS EN 10343:2009ICS 77.140.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDSteels for quenchingand tempering forconstruction purposes Technical deliveryconditionsThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee
2、 on 30 April2009 BSI 2009ISBN 978 0 580 56129 0Amendments/corrigenda issued since publicationDate CommentsBS EN 10343:2009National forewordThis British Standard is the UK implementation of BS EN 10343:2009.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/31, Wrought st
3、eels.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfro
4、m legal obligations.BS EN 10343:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 10343March 2009ICS 77.140.10English VersionSteels for quenching and tempering for construction purposes -Technical delivery conditionsAciers pour trempe et revenu pour usage de construction -Conditions techniques d
5、e livraisonVergtungssthle fr das Bauwesen - TechnischeLieferbedingungenThis European Standard was approved by CEN on 14 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national sta
6、ndard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other
7、language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finl
8、and,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITE
9、E FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10343:2009: EBS EN 10343:2009EN 10343:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Term
10、s and definitions .5 4 Classification and designation .6 5 Designation to be used on ordering 6 6 Manufacturing process .7 7 Requirements .8 8 Inspection 10 9 Evaluation of conformity 11 10 Preparation of samples and test pieces . 14 11 Testing on compliance criteria 15 12 Marking, labelling, packag
11、ing 16 Annex A (normative) Ruling sections for the mechanical properties . 26 A.1 Terms and Definitions 26 A.2 Determination of the diameter of the equivalent ruling section 26 Annex B (normative) Dimensional standards applicable to products complying with this European Standard . 28 Annex ZA (infor
12、mative) Relationship between this European Standard and the Essential Requirements of EU Directive 89/106/EEC, EU Construction Products Directive . 29 ZA.1 Scope and relevant characteristics 29 ZA.2 Procedures for the attestation of conformity of structural metallic construction products 30 ZA.3 CE
13、marking and labelling . 32 BS EN 10343:2009EN 10343:2009 (E) 3 Foreword This document (EN 10343:2009) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by DIN. This Europ
14、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by December 2010. Attention is drawn to the possibility that some of the e
15、lements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports
16、essential requirements of EU Construction Products Directive (89/106/EEC). For relationship with EU Construction Products Directive (CPD), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
17、the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova
18、kia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 10343:2009EN 10343:2009 (E) 4 1 Scope This document specifies the technical delivery requirements for the following steel products intended for use in the construction industry: bars (including hammer-forged bars); wide flats; h
19、ot-rolled strip and sheet/plate; forgings. They are manufactured from the direct hardening non alloy steels for quenching and tempering and the direct hardening alloy steels for quenching and tempering and supplied in one of the heat treatment conditions given for the different types of products in
20、Table 1. These steels are generally intended for the manufacture of quenched and tempered parts, but can also be used in the normalized condition. The requirements for mechanical properties are restricted to part sizes given in Tables 4 and 5. NOTE 1 In accordance with EN 10020, the steels covered b
21、y this standard are quality and special steels. The differences between quality and special steels are characterized by the following requirements, which are valid for special steels only: the minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of m
22、ean percentages by mass of carbon 12 mm, standard 10 mm x 10 mm test pieces shall be machined in such a way that one side is not further away than 2 mm from a rolled surface (see Figure 3). BS EN 10343:2009EN 10343:2009 (E) 15 10.3 Identification of samples and test pieces Samples and test pieces sh
23、all be marked so that the original products and their location and orientation in the product are known. 11 Testing on compliance criteria 11.1 Chemical analysis The chemical analysis shall be carried out using the appropriate European Standard for the element being analysed. In the absence of an ap
24、propriate European Standard, the choice of a suitable physical or chemical analytical method for the analysis shall be at the discretion of the manufacturer. The manufacturer shall declare the test method used, if required. The list of available ENs on chemical analysis is given in CEN/TR 10261. 11.
25、2 Mechanical tests 11.2.1 Tensile test The tensile test shall be carried out in accordance with EN 10002-1. For the specified yield strength in the Tables 4 and 5 on mechanical properties the upper yield strength (ReH) shall be determined. If a yield phenomenon is not present, the 0,2 % proof streng
26、th (Rp0,2) shall be determined. 11.2.2 Impact test The impact test shall be carried out in accordance with EN 10045-1. The average value of a set of three test pieces shall be equal to or greater than the specified value. One individual value may be below the specified value, provided that it is not
27、 less than 70 % of that value. If the above conditions are not satisfied then an additional set of three test pieces may be taken at the discretion of the manufacturer from the same sample and tested. To consider the test unit as conforming, after testing the second set, the following conditions sha
28、ll be satisfied simultaneously: a) the average value of six test pieces shall be equal to or greater than the specified value; b) not more than two of six individual values may be lower than the specified value; c) not more than one of the six individual values may be lower than 70 % of the specifie
29、d value. If these conditions are not satisfied the sample product is rejected and retests may be carried out on the remainder of the test unit (see 11.3). 11.3 Retests For retests, EN 10021 shall apply. BS EN 10343:2009EN 10343:2009 (E) 16 12 Marking, labelling, packaging The manufacturer shall mark
30、 the products or the bundles or boxes in a suitable way so that it is possible to determine the cast, the steel grade and the origin of the delivery (for special agreements see B.7 of EN 10083-1:2006). Dimensions in mm Key 1 Tensile test piece 2 Notched bar impact test piece 3 Round and similar shap
31、ed sections 4 Rectangular and square sections a For small products (d or t 25 mm), the test piece shall, if possible, consist of an unmachined part of the bar. b For round bars the longitudinal axis of the notch shall be about parallel to the direction of a diameter. c For rectangular bars, the long
32、itudinal axis of the notch shall be perpendicular to the wider rolling surface. Figure 1 Location of the test pieces in bars BS EN 10343:2009EN 10343:2009 (E) 17 Dimensions in mm Key 1 Principal direction of rolling a For steel grades with requirements for the impact energy, the width of the sample
33、shall be sufficient for longitudinal impact test pieces to be taken as specified in Figure 3. Figure 2 Location of the samples (A and B) in flat products in relation to the product width Type of test Product thickness Location of the test pieceafor a product width of Distance of the test piece from
34、the rolled surface mm w 30 Impact testc 12dlongitudinal longitudinal aLocation of the longitudinal axis of the test piece with respect to the principal rolling direction. bThe test piece shall comply with EN 10002-1. cThe longitudinal axis of the notch shall be perpendicular to the rolled surface. d
35、If agreed at the time of ordering, the test piece from products with a thickness exceeding 40 mm may be takenfrom 1/4 product thickness. Key 1 Rolled surface 2 Alternatives Figure 3 Location of the test piece from flat products in relation to product thickness and principal direction of rolling BS E
36、N 10343:2009EN 10343:2009 (E) 18 Table 1 Combinations of usual heat-treatment conditions at delivery, product forms and requirements as specified in tables 2 to 5 1 2 3 4 5 6 1 Heat treatment condition at delivery Symbol x indicates applicable for Applicable requirements if the steel is ordered with
37、 the designation given in Bars Flat products Hammer and drop forgings Table 2 6.1 6.2 2 Normalizedb+N x xax Chemical composition according to Tables 2 and 3 Mechanical properties according toTable 5 3 Quenched and tempered+QTx xa x Table 4aIt is not possible to deliver all dimensions of flat product
38、s in this heat-treatment condition. bNormalizing may be replaced by normalizing forming. BS EN 10343:2009EN 10343:2009 (E) 19 Table 2 Steel grades and chemical composition (cast analysis) Steel designation Chemical composition % by mass aName Number C Si max. Mn P max. S Cr Mo Ni Cr+Mo+Nimax. V B No
39、n alloy quality steels bC35 1.0501 0,32 to 0,39 0,40 0,50 to 0,80 0,045 max. 0,045 max. 0,40 max. 0,10 max. 0,40 0,63 - - C45 1.0503 0,42 to 0,50 0,40 0,50 to 0,80 0,045 max. 0,045 max. 0,40 max. 0,10 max. 0,40 0,63 - - Non alloy special steelsbC35E 1.1181 0,32 to 0,39 0,40 0,50 to 0,80 0,030 max. 0
40、,035c max. 0,40 max. 0,10 max. 0,40 0,63 - - C35R 1.1180 0,020 to 0,040 C45E 1.1191 0,42 to 0,50 0,40 0,50 to 0,80 0,030 max. 0,035c max. 0,40 max. 0,10 max. 0,40 0,63 - - C45R 1.1201 0,020 to 0,040 Alloy special steels without boron b25CrMo4 1.7218 0,22 to 0,29 0,40 0,60 to 0,90 0,025 max. 0,035 0,
41、90 to 1,20 0,15 to 0,30 - - - - 42CrMo4 1.7225 0,38 to 0,45 0,40 0,60 to 0,90 0,025 max. 0,035 0,90 to 1,20 0,15 to 0,30 - - - - 50CrMo4 1.7228 0,46 to 0,54 0,40 0,50 to 0,80 0,025 max. 0,035 0,90 to 1,20 0,15 to 0,30 - - - - 34CrNiMo6 1.6582 0,30 to 0,38 0,40 0,50 to 0,80 0,025 max. 0,035 1,30 to 1
42、,70 0,15 to 0,30 1,30 to 1,70 - - - 51CrV4 1.8159 0,47 to 0,55 0,40 0,70 to 1,10 0,025 max. 0,025 0,90 to 1,20 - - - 0,10 to 0,25 - Alloy special steels with boron 20MnB5 1.5530 0,17 to 0,23 0,40 1,10 to 1,40 0,025 max. 0,035 - - - - - 0,0008 to 0,0050 27MnCrB5-2 1.7182 0,24 to 0,30 0,40 1,10 to 1,4
43、0 0,025 max. 0,035 0,30 to 0,60 - - - - 0,0008 to 0,0050 Precautions shall be taken to prevent the addition of such elements from scrap or other material used in the manufacture which affect the mechanical properties and applicability. aWhere requirements are made on the mechanical properties in the
44、 quenched and tempered condition (see Table 4), deviations from the limits for the cast analysis are permissible, except for the elements carbon, phosphorus and sulphur. The deviations shall not exceed the specifications of Table 3. bSteels with improved machinability as a result of the addition of
45、higher sulphur contents up to around 0,10% S (including resulphurized steels with controlled inclusion content (e.g. Ca treatment) may be supplied on request. For these steels, increasing the Mn content up to +0,15 % is permitted. cIf agreed at the time of enquiry and order, for flat products sulphu
46、r can be restricted to max. 0,010 % by mass. BS EN 10343:2009EN 10343:2009 (E) 20 Table 3 Permissible deviations between the product analysis and the limiting values given in Table 2 for the cast analysis Element Permissible maximum content in the cast analysis % by mass Permissible deviationa% by m
47、ass C 0,55 0,02 Si 0,40 + 0,03Mn 1,00 0,04 1,00 1,40 0,05 P 0,045 + 0,005 S 0,045 + 0,005b Cr 1,7 0,05 Mo 0,30 0,03 Ni 1,7 0,05 V 0,25 0,02 B 0,0050 0,0003 a means that in one cast, the deviation may occur over the upper valueor under the lower value of the specified range in Table 2, but not bothat
48、 the same time. bFor steels with a specified sulphur range of 0,020% to 0,040% according to cast analysis, the permissible deviation is 0,005%. BS EN 10343:2009EN 10343:2009 (E) 21 Table 4 Mechanical properties aat room temperature in the quenched and tempered condition (+QT) Steel designation Mecha
49、nical properties for the ruling section (see Annex A) with a diameter (d) or for flat products thickness (t) of d 16 mm t 8 mm 16 mm d 40 mm 8 mm t 20 mm b 40 mm d 100 mm 20 mm t 60 mm 100 mm d 160 mm 60 mm t 100 mm 160 mm d 250 mm 100 mm t 160 mm Name Number Remin. RmA min. Z min. KV min. Remin. RmA min. Z min. KV cmin.Remin. RmA min. Z min. KVcmin. Remin. RmA min. Z min. KV cmin. Remin. RmA min. Z min. KV cmin. MPa d % % J MPa d % % J MPa d % % J MPad % % J MPa d % % J C35E C35R 1.1181 1.1180 430 6
