1、BS EN10028-6:2009ICS 77.140.30; 77.140.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFlat products madeof steels for pressurepurposesPart 6: Weldable fine grain steels,quenched and temperedThis British Standardwas published under theauthority of the Standard
2、sPolicy and StrategyCommittee on 31 July2009. BSI 2009ISBN 978 0 580 64189 3Amendments/corrigenda issued since publicationDate CommentsBS EN 10028-6:2009National forewordThis British Standard is the UK implementation of EN 10028-6:2009. Itsupersedes BS EN 10028-6:2003 which is withdrawn.The UK parti
3、cipation in its preparation was entrusted to TechnicalCommittee ISE/73/2, Steel plates and bars for pressure purposes.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 contrac
4、t. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 10028-6:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 10028-6June 2009ICS 77.140.30; 77.140.50 Supersedes EN 10028-6:2003 English VersionFlat products ma
5、de of steels for pressure purposes - Part 6:Weldable fine grain steels, quenched and temperedProduits plats en acier pour appareils pression - Partie 6:Aciers soudables grains fins, tremps et revenusFlacherzeugnisse aus Druckbehltersthlen - Teil 6:Schweigeeignete Feinkornbausthle, vergtetThis Europe
6、an Standard was approved by CEN on 14 May 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 standard without any alteration. Up-to-date lists and bibliographical references concernin
7、g 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 language made by translationunder the responsibility of a CEN member into its own langu
8、age 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, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem
9、bourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of
10、 exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10028-6:2009: EBS EN 10028-6:2009EN 10028-6:2009 (E) 2 Contents page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Dimensions and tolerances 4 5 Calculation of mass . 4 6 C
11、lassification and designation . 4 6.1 Classification 4 6.2 Designation 4 7 Information to be supplied by the purchaser . 5 7.1 Mandatory information 5 7.2 Options . 5 7.3 Example for ordering . 5 8 Requirements . 5 8.1 Steelmaking process . 5 8.2 Delivery condition 5 8.3 Chemical composition 6 8.4 M
12、echanical properties . 6 8.5 Surface condition. 6 8.6 Internal soundness 6 9 Inspection . 6 9.1 Types of inspections and inspections documents 6 9.2 Tests to be carried out 6 9.3 Retests 6 10 Sampling . 6 11 Test methods 7 12 Marking . 7 Annex ZA (informative) Relationship between this European Stan
13、dard and the Essential Requirements of EU Directive 97/23/EC 12 Bibliography 13 BS EN 10028-6:2009EN 10028-6:2009 (E) 3 Foreword This document (EN 10028-6:2009) has been prepared by Technical Committee ECISS/TC 22 “Steels for pressure purposes - Qualities”, the secretariat of which is held by DIN. T
14、his 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 December 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. Attention is drawn to the possibility that some
15、of the elements 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 supersedes EN 10028-6:2003. This European Standard consists of the following parts, under the general title Flat product
16、s made of steels for pressure purposes: Part 1: General requirements Part 2: Non-alloy and alloy steels with specified elevated temperature properties Part 3: Weldable fine grain steels, normalized Part 4: Nickel alloy steels with specified low temperature properties Part 5: Weldable fine grain stee
17、ls, thermomechanically rolled Part 6: Weldable fine grain steels, quenched and tempered Part 7: Stainless steels NOTE The clauses marked by two points () contain information relating to agreements that may be made at the time of enquiry and order. This document has been prepared under a mandate give
18、n to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC. For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulati
19、ons, the national standards organizations of 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, Netherla
20、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 10028-6:2009EN 10028-6:2009 (E) 4 1 Scope This European Standard specifies the requirements for flat products for pressure equipments made of quenched and tempered steels as specified
21、 in Table 1. The requirements in EN 10028-1:2007 + A1:2009 also apply. NOTE Once this European Standard is published in the EU Official Journal (OJEU) under Directive 97/23/EC, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 97/23/EC is limited to technical data of
22、 materials in this European Standard (Part 1 and this Part 6 of the series) and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equi
23、pment to verify that the ESRs of Directive 97/23/EC are satisfied, needs to be done. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of t
24、he referenced document (including any amendments) applies. EN 10028-1:2007 + A1:2009, Flat products made of steels for pressure purposes Part 1: General requirements EN 10204:2004, Metallic products Types of inspection documents 3 Terms and definitions For the purposes of this document the terms and
25、 definitions given in EN 10028-1:2007 + A1:2009 apply. 4 Dimensions and tolerances See EN 10028-1:2007 + A1:2009. 5 Calculation of mass See EN 10028-1:2007 + A1:2009. 6 Classification and designation 6.1 Classification 6.1.1 This document covers the steel grades given in Table 1 in four qualities: a
26、) the basic series (P.Q); b) series with elevated temperature properties (P.QH); c) series with low temperature properties down to -40 C (P.QL1); d) series with low temperature properties down to -60 C (P.QL2). 6.1.2 In accordance with EN 10020 all the steels specified in this document are alloy spe
27、cial steels. 6.2 Designation See EN 10028-1:2007 + A1:2009. BS EN 10028-6:2009EN 10028-6:2009 (E) 5 7 Information to be supplied by the purchaser 7.1 Mandatory information See EN 10028-1:2007 + A1:2009. 7.2 Options A number of options is specified in this document and listed below. Additionally the
28、relevant options of EN 10028-1:2007 + A1:2009 apply. If the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the products shall be supplied in accordance with the basic specification (see also EN 10028-1:2007 + A1:2009). 1) providing data on suit
29、able welding conditions (see 8.2.3); 2) mid thickness test pieces for the impact test (see Clause 10); 3) lower copper content and maximum tin content (see Table 1, footnote c); 4) mechanical properties for thicknesses 150 mm (see Table 3, footnote b); 5) specification of a minimum impact energy of
30、40 J (see Note to 8.4 and Table 4, footnote a); 6) applicability of elevated temperature values for QL grades (see Table 5, footnote b). 7.3 Example for ordering 10 plates with nominal dimensions, thickness = 50 mm, width = 2 000 mm, length = 10 000 mm, made of a steel grade with the name P355QL2 an
31、d the number 1.8869 as specified in EN 10028-6, inspection certificate 3.1 as specified in EN 10204: 10 plates 50 x 2 000 x 10 000 EN 10028-6 P355QL2 Inspection certificate 3.1 or 10 plates 50 x 2 000 x 10 000 EN 10028-6 1.8869 Inspection certificate 3.1. 8 Requirements 8.1 Steelmaking process See E
32、N 10028-1:2007 + A1:2009. 8.2 Delivery condition 8.2.1 The products covered by this European Standard shall be supplied in the quenched and tempered condition. 8.2.2 The steels specified in this European Standard shall be suitable for welding processes in current use (see Notes 1 to 3 to 8.2.3). 8.2
33、.3 The manufacturer shall, if requested, provide the purchaser with data on suitable welding conditions determined on the basis of weld procedure tests. NOTE 1 With increasing product thickness and strength level cold cracking can occur. Cold cracking is caused by the follo-wing factors in combinati
34、on: a) the amount of diffusible hydrogen in the weld metal; b) brittle structure of the heat affected zone; BS EN 10028-6:2009EN 10028-6:2009 (E) 6 c) tensile stress concentrations in the welded joint. NOTE 2 When using recommendations as laid down, for example in EN 1011-1 and EN 1011-2, the recomm
35、ended welding conditions and the various welding ranges of the steel grades can be determined depending on the product thickness, the applied welding energy, the design requirements, the electrode efficiency, the welding process and the weld metal properties. NOTE 3 Excessive post weld heat-treatmen
36、t (PWHT) conditions can decrease the mechanical properties. It is therefore recommended that the purchaser seeks, at the time of enquiry and order, the advise of the manufacturer and considers, where appropriate, the verification of the mechanical properties on simulated post weld heat treated sampl
37、es. 8.3 Chemical composition 8.3.1 The requirements of Table 1 apply for the chemical composition according to the cast analysis. 8.3.2 The product analysis may deviate from the specified values of the cast analysis given in Table 1 by the values given in Table 2. 8.4 Mechanical properties The value
38、s given in Tables 3 to 5 apply (see also EN 10028-1:2007 + A1:2009 and Clause 10). NOTE Optionally, a minimum impact energy value of 40 J may be specified for temperatures where lower minimum values are specified (see Table 4, footnote a). 8.5 Surface condition See EN 10028-1:2007 + A1:2009. 8.6 Int
39、ernal soundness See EN 10028-1:2007 + A1:2009. For possible verification, see also EN 10028-1:2007 + A1:2009. 9 Inspection 9.1 Types of inspections and inspections documents See EN 10028-1:2007 + A1:2009. 9.2 Tests to be carried out See EN 10028-1:2007 + A1:2009. 9.3 Retests See EN 10028-1:2007 + A1
40、:2009. 10 Sampling See EN 10028-1:2007 + A1:2009. For the impact test, deviating from EN 10028-1:2007 + A1:2009, Table 3, footnote f, the preparation of test pieces taken from the mid thickness may be agreed at the time of enquiry and order. In this case, test temperatures and minimum impact energy
41、values shall also be agreed. BS EN 10028-6:2009EN 10028-6:2009 (E) 7 11 Test methods See EN 10028-1:2007 + A1:2009. 12 Marking See EN 10028-1:2007 + A1:2009. BS EN 10028-6:2009EN 10028-6:2009 (E) 8 Table 1 Chemical composition (cast analysis)a,b Steel grade Maximum contents, % by mass Steel name Ste
42、el number C Si Mn P S N B Cr Mo CucNbdNi Tid VdZrdP355Q 1.8866 0,16 0,40 1,50 0,025 0,010 0,015 0,005 0,30 0,25 0,30 0,05 0,50 0,03 0,06 0,05 P355QH 1.8867 P355QL1 1.8868 0,020 0,008 P355QL2 1.8869 0,005 P460Q 1.8870 0,18 0,50 1,70 0,025 0,010 0,015 0,005 0,50 0,50 0,30 0,05 1,00 0,03 0,08 0,05 P460
43、QH 1.8871 P460QL1 1.8872 0,020 0,008 P460QL2 1.8864 0,005 P500Q 1.8873 0,18 0,60 1,70 0,025 0,010 0,015 0,005 1,00 0,70 0,30 0,05 1,50 0,05 0,08 0,15 P500QH 1.8874 P500QL1 1.8875 0,020 0,008 P500QL2 1.8865 0,005 P690Q 1.8879 0,20 0,80 1,70 0,025 0,010 0,015 0,005 1,50 0,70 0,30 0,06 2,50 0,05 0,12 0
44、,15 P690QH 1.8880 P690QL1 1.8881 0,020 0,008 P690QL2 1.8888 0,005 a Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate measures shall be taken to prevent the addition from scrap and oth
45、er materials used in steelmaking of these elements which may adversely affect the mechanical properties and usability. bThe manufacturer may add one or several alloying element(s) up to the maximum values specified in the order as a function of the product thickness and the steelmaking conditions in
46、 order to attain the specified properties. The chemical composition range for each manufacturers analysis shall be given in the offer and confirmation of order. cFor reasons of hot formability, a lower copper content and a maximum tin content may be agreed at the time of enquiry and order. dThe perc
47、entage of grain refining elements shall be at least 0,015 %. Aluminium is also included in these elements. The minimum content of 0,015 % applies here to dissolved aluminium. This value is regarded as attained if the total aluminium content is at least 0,018 %; in cases of dispute, the dissolved alu
48、minium content is to be determined. BS EN 10028-6:2009EN 10028-6:2009 (E) 9 Table 2 Permissible deviations of the chemical composition in the results of the product analysis from the specified values applicable to the cast analysis Element Specified value in the cast analysis according to Table 1 %
49、by mass Permissible deviationa of the product analysis % by mass C 0,20 + 0,02 Si 0,80 + 0,05 Mn 1,70 + 0,10 P 0,025 + 0,005 S 0,010 + 0,003 Altotal 0,018 0,005 N 0,015 + 0,002 B 0,005 + 0,0005 Cr 1,50 + 0,10 Mo 0,70 + 0,04 Cu 0,30 + 0,05 Ni 2,50 + 0,10 Nb 0,06 + 0,01 Ti 0,05 + 0,01 V 0,12 + 0,01 Zr 0,15 + 0,01 aIf several product analysis are carried out on one cast, and then contents of an individual element determined lie outside the permissible range of the chemical composition speci
