EN 10028-4:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flacherzeugnisse aus Druckbehälterstählen - Teil 4: Nickellegierte kaltzähe StähleProduits plats en aciers pour appareils à pression - Partie 4: Aciers alliés au nickel avec caractéristiques spécifiées à basse températureFlat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties77.140.50SROL]GHONLFlat steel products and semi-products77.140.30Jekla za uporabo pod tlakomSteels for pressure purposesICS:Ta slovenski standard je istoveten z:EN 10028-4:2009SIST EN 10028-4:2009en,fr,de01-september-2009SIST EN 10028-4:2009SLOVENSKI
STANDARDSIST EN 10028-4:2003/AC:2006SIST EN 10028-4:20031DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10028-4June 2009ICS 77.140.30; 77.140.50Supersedes EN 10028-4:2003
English VersionFlat products made of steels for pressure purposes - Part 4:Nickel alloy steels with specified low temperature propertiesProduits plats en aciers pour appareils à pression - Partie4: Aciers alliés au nickel avec caractéristiques spécifiées àbasse températureFlacherzeugnisse aus Druckbehälterstählen - Teil 4:Nickellegierte kaltzähe StähleThis European 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 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 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, Finland,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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10028-4:2009: ESIST EN 10028-4:2009

Guidelines for heat treatment . 10 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 11 Bibliography . 12
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) delivery condition other than that specified in Table 3 (see 8.2.2); 2) delivery of products in the untreated condition (see 8.2.3); 3) specification of a minimum impact energy of 40 J (see NOTE to 8.4 and Table 4); 4) mid thickness test pieces for the impact test (see Clause 10); 5) verification of impact energy for longitudinal test pieces (see Clause 11). 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 15NiMn6 and the number 1.6228 as specified in EN 10028-4, to be delivered with inspection document 3.1 as specified in EN 10204. 10 plates – 50 x 2000 x 10 000 – EN 10028-4 15NiMn6 – Inspection document 3.1 or 10 plates – 50 x 2000 x 10 000 – EN 10028-4 1.6228 – Inspection document 3.1. 8 Requirements 8.1 Steelmaking process See EN 10028-1:2007 + A1:2009. 8.2 Delivery condition 8.2.1 The delivery condition shall be noted in the inspection document. 8.2.2 yy Unless otherwise agreed at the time of enquiry and order, the products covered by this document shall be supplied in the usual delivery conditions specified in Table 3. 8.2.3 yy If so agreed at the time of enquiry and order, the products may be supplied in the untreated condition. In these cases, the specified tests shall be carried out on test pieces in the usual delivery condition as given in Table 3. NOTE Testing in a simulated heat treated condition does not discharge the processor from the obligation of providing proof of the specified properties in the finished product. 8.3 Chemical composition 8.3.1 The requirements of Table 1 shall apply for the chemical composition according to the cast analysis. 8.3.2 The product analysis shall not deviate from the specified values for the cast analysis as specified in Table 1 by more than the values given in Table 2. SIST EN 10028-4:2009

Steel number C Si Mn P S Altotal Mo Nb Ni V max. max.
max. max. min. max. max.
max. 11MnNi5-3 1.6212 0,14 0,50 0,70 to 1,50 0,025 0,010 0,020 – 0,05 0,30 b to 0,80 0,05 13MnNi6-3 1.6217 0,16 0,50 0,85 to 1,70 0,025 0,010 0,020 – 0,05 0,30 b to 0,85 0,05 15NiMn6 1.6228 0,18 0,35 0,80 to 1,50 0,025 0,010 – – – 1,30 to 1,70 0,05 12Ni14 1.5637 0,15 0,35 0,30 to 0,80 0,020 0,005 – – – 3,25 to 3,75 0,05 X12Ni5 1.5680 0,15 0,35 0,30 to 0,80 0,020 0,005 – – – 4,75 to 5,25 0,05 X8Ni9 1.5662 0,10 0,35 0,30 to 0,80 0,020 0,005 – 0,10 – 8,5 to 10,0 0,05 X7Ni9 1.5663 0,10 0,35 0,30 to 0,80 0,015 0,005 – 0,10 – 8,5 to 10,0 0,01 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 or other materials used in steelmaking of these elements which may adversely affect the mechanical properties and usability
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