EN 10028-2:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature propertiesProduits plats en aciers pour appareils a pression - Partie 2: Aciers non alliés et alliés avec caractéristiques spécifiées a température élevéeFlacherzeugnisse aus Druckbehälterstählen - Teil 2: Unlegierte und legierte Stähle mit festgelegten Eigenschaften bei erhöhten TemperaturenTa slovenski standard je istoveten z:EN 10028-2:2003SIST EN 10028-2:2003en77.140.5077.140.30ICS:SIST EN 10028-2:19961DGRPHãþDSLOVENSKI
STANDARDSIST EN 10028-2:200301-november-2003

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10028-2June 2003ICS 77.140.30; 77.140.50Supersedes EN 10028-2:1992English versionFlat products made of steels for pressure purposes - Part 2:Non-alloy and alloy steels with specified elevated temperaturepropertiesProduits plats en aciers pour appareils à pression - Partie2: Aciers non alliés et alliés avec caractéristiquesspécifiées à température élevéeFlacherzeugnisse aus Druckbehälterstählen - Teil 2:Unlegierte und legierte Stähle mit festgelegtenEigenschaften bei erhöhten TemperaturenThis European Standard was approved by CEN on 20 February 2003.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 concerning such nationalstandards may be obtained on application to the 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 language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10028-2:2003 E

Guidelines for heat treatment.15Annex B (informative)
Critical time temperature parameter Pcrit. and possible combinations of stressrelieving temperature and holding time.16Annex C (informative)
Reference data of strength for 1 % (plastic) creep strain and creep rupture.17Annex D (normative)
Evaluation of resistance to hydrogen induced cracking.22Annex E (normative)
Step cooling test.23Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.24Bibliography.25

Delivery condition8.2.1Unless otherwise agreed at the time of enquiry and order, the products covered by this standard shall besupplied in the usual conditions given in Table 3 (see 8.2.3).8.2.2 Normalizing may, at the discretion of manufacturer, be replaced with normalizing rolling for the steelgrades P235GH, P265GH, P295GH and P355GH. In this case, tests in the simulated normalized condition with anagreed frequency of testing may be agreed at the time of enquiry and order to verify that the specified propertiesare complied with.8.2.3 If so agreed at the time of enquiry and order, products made of steel grades P235GH, P265GH,P295GH, P355GH and 16Mo3 may also be delivered in the untreated condition. Products made of one of the otheralloy grades may be supplied in the tempered or normalized condition or, in exceptional cases, in the untreatedcondition if so agreed (Annex A contains heat treatment information for the purchaser).In these cases, testing shall be carried out on test pieces in the usual delivery condition as indicated in Table 3.NOTEThe testing of the test pieces in a simulated heat treated condition does not discharge the processor from theobligation of providing proof of the specified properties in the finished product.8.2.4Information on welding is given in EN 1011-1 and EN 1011-2.NOTEExcessive post weld heat treatment (PWHT) conditions can decrease the mechanical properties. When in stressrelieving the intended time temperature parameterP = Ts (20 + lg t)
10-3 ,whereTs is the stress relieving temperature in K andt is the holding time in hours,is exceeding the critical (Pcrit.) values in annex B, the purchaser should in his enquiry and order inform the manufactureraccordingly and, where appropriate, tests on simulated heat treated samples can be agreed to check whether after such atreatment the properties specified in this European Standard can still be regarded as valid.8.3 Chemical composition8.3.1The requirements of Table 1 shall apply for the chemical composition according to the cast analysis.8.3.2The product analysis shall not deviate from the specified values for the cast analysis as specified in Table 1by more than the values given in Table 2.8.3.3 A maximum value for the carbon equivalent may be agreed upon at the time of enquiry and order forsteel grades P235GH, P265GH, P295GH and P355GH. In this case, the following formula shall apply forcalculation of the carbon equivalent value (CEV):15CuNi5VMoCr6MnCCEV

0,7016Mo31.54150,12 to 0,20 0,350,40 to 0,900,0250,010e 0,012 0,30 0,300,25 to 0,35- 0,30---18MnMo4-51.5414 0,20 0,400,90 to 1,500,0150,005e 0,012 0,30 0,300,45 to 0,60- 0,30---20MnMoNi4-51.63110,15 to 0,23 0,401,00 to 1,500,0200,010e 0,012 0,20 0,200,45 to 0,60-0,40 to 0,80- 0,02-15NiCuMoNb5-6-41.6368 0,170,25 to 0,500,80 to 1,200,0250,010 0,015 0,020 0,300,50 to 0,800,25 to 0,500,015 to0,0451,00 to 1,30---13CrMo4-51.73350,08 to 0,18 0,350,40 to 1,000,0250,010e 0,0120,70f to 1,15 0,300,40 to 0,60-----13CrMoSi5-51.7336 0,170,50 to 0,800,40 to 0,650,0150,005e 0,0121,00 to 1,50 0,300,45 to 0,65-0,30---10CrMo9-101.73800,08 to 0,14g 0,500,40 to 0,800,0200,010e 0,0122,00 to 2,50 0,300,90 to 1,10-----12CrMo9-101.73750,10 to 0,15 0,300,30 to 0,800,0150,0100,010to0,040 0,0122,00 to 2,50 0,250,90 to 1,10- 0,30---X12CrMo51.73620,10 to 0,15 0,500,30 to 0,600,0200,005e 0,0124,00 to 6,00 0,300,45 to 0,65- 0,30---13CrMoV9-101.77030,11 to 0,15 0,100,30 to 0,600,0150,005e 0,0122,00 to 2,50 0,200,90 to 1,10 0,07 0,250,030,25 to 0,35 0,002 B 0,015Ca12CrMoV12-101.77670,10 to 0,15 0,150,30 to 0,600,0150,005e 0,0122,75 to 3,25 0,250,90 to 1,10 0,07h 0,250,03h0,20 to 0,30 0,003Bh 0,015CahX10CrMoVNb9-11.49030,08 to 0,12 0,500,30 to 0,600,0200,005 0,0400,030 to 0,0708,00 to 9,50 0,300,85 to 1,050,06 to 0,10 0,30-0,18 to 0,25-aElements 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
or other materials used in steelmaking of these elements which may affect the mechanical properties and usability.b A lower maximum copper content and/or a maximum sum of copper and tin content, e.g. Cu + 6 Sn
0,33%, may be agreed upon at the time of enquiry and order, e.g. with regard to hot formability for the grades where only a
maximum copper content is specified.cFor product thicknesses < 6 mm, a minimum manganese content of 0,20 % lower than specified is permitted.dA ratio NAl 2 shall apply.eThe Al content of the cast shall be determined and given in the inspection document.f If resistance to pressurized hydrogen is of importance, a minimum content of 0,80% Cr may
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