SIST EN 10297-1:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahtlose kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische Anwendungen - Technische Lieferbedingungen - Teil 1: Rohre aus unlegierten und legierten StählenTubes ronds sans soudure en acier pour utilisation en mécanique générale et en construction mécanique - Conditions techniques de livraison - Partie 1: Tubes en acier non allié et alliéSeamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 10297-1:2003SIST EN 10297-1:2003en01-november-2003SIST EN 10297-1:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10297-1February 2003ICS 77.140.75English versionSeamless circular steel tubes for mechanical and generalengineering purposes - Technical delivery conditions - Part 1:Non-alloy and alloy steel tubesTubes sans soudure en acier pour utilisation en mécaniquegénérale et en construction mécanique - Conditionstechniques de livraison - Partie 1: Tubes en acier non alliéet alliéNahtlose kreisförmige Stahlrohre für den Maschinenbauund allgemeine technische Anwendungen - TechnischeLieferbedingungen - Teil 1: Rohre aus unlegierten undlegierten StählenThis European Standard was approved by CEN on 16 October 2002.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 10297-1:2003 ESIST EN 10297-1:2003

Steels for case hardening.35Annex B (informative)
Recommended heat treatment temperatures.36Annex C (normative)
Hardness requirements for heat treated tubes.38Annex D (normative)
Hardenability - Limiting values for C scale Rockwell.39Annex E (normative)
Formulae for calculation of nominal section properties.42Bibliography.43SIST EN 10297-1:2003

-- 60,3 x 3,6 - EN 10297 -
E275 - +N -Option 147 Manufacturing process7.1 Steelmaking processThe steelmaking process is at the discretion of the manufacturer.Elements not included in Tables 3, 4, 5, 6 and A1 for the relevant grade shall not be intentionally added to the steelwithout the agreement of the purchaser, except for elements which may be added for finishing the cast. Allappropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materialsused in the steelmaking process.7.2 Deoxidation processSteels shall be fully killed and additionally those in Tables 4 and 5 shall contain N binding elements and are finegrain steels.7.3 Tube manufacture and delivery conditions7.3.1Tubes shall be manufactured by a seamless process.Table 2 gives a summary of delivery conditions, hardenability requirements and related mandatory and optional testrequirements for mechanical properties and hardness. For hardenability requirements see 8.5.Tubes made of steels in Table 3 with the exception of E470 are normally supplied as rolled or normalized at thediscretion of the manufacturer. However the purchaser may specify +N condition. Grade E470 is supplied as rolled.Tubes made of steels in Table 4 are supplied in the delivery condition indicated in Table 9.Tubes made of steels in Tables 5, 6 and A1 are supplied in a delivery condition indicated in Table 2 as specified bythe purchaser.The recommended heat treatment temperatures are given in Table B.1 and Table B.2 as appropriate.At the manufacturers discretion tube may be cold finished, before the specified heat treatment is given. Coldfinished tubes in the +AR condition shall be annealed or normalized to achieve the specified properties.NOTEThe cold drawing process leaves residual oil on the tube which may leave a residue when heat treated.When specified the tubes shall be supplied descaled (see option 1). The amount of descaling shall be agreed at thetime of enquiry and order. The method is at the discretion of the manufacturer.Option 1 : Tubes shall be supplied descaled.7.3.2All NDT activities shall be carried out by qualified and competent level 1, 2 and/or 3 personnel authorisedto operate by the employer.The qualification shall be in accordance with EN 10256 or, at least an equivalent to it.It is recommended that the level 3 personnel be certified in accordance with EN 473 or, at least an equivalent to it.The operating authorisation issued by the employer shall be in accordance with a written procedure.NDT operations shall be authorised by a level 3 NDT individual approved by the employer.NOTEThe definition of level 1, 2 and 3 can be found in appropriate standards, e.g. EN 473 and EN 10256.SIST EN 10297-1:2003

b-MM-----Tables 3 and 8+N-MM-----+N-MM--M--Tables 4 and 9+QT-MM--M---+AROption 8M-Option 2Option 3-Option 9 or 10-10+NOption 8MM-Option 3-Option 9 or 10-11+QTMM--Option 5-Option 6Table5-+AOption 8MOption 4Option 2Option 3-Option 9 or 10M-+AR cOption 8M--Option 3-Option 9 or 10-12+QTMM--Option 5-Option 6Table 6-+AOption 8MOption 4-Option 3-Option 9 or 10M+AROption 8 dM----Option 9 or 10-+NOption 8 dMOption 4---Option 9 or 10Option 7+AOption 8 dMOption 4---Option 9 or 10M+TH eOption 8 dMOption 4---Option 9 or 10MTable A.1+FP eOption 8 dMOption 4---Option 9 or 10MaM = Mandatory, - = Not applicable.bAt the manufacturers discretion as rolled or normalized except for grade E 470 which is always supplied in +AR condition.c+AR condition only applies for 25CrMo4 and 34CrMo4.dOption 8 only applies for alloy special steels.e+TH and +FP only apply for 16MnCr5, 16MnCrS5, 20NiCrMo2-2 and 20NiCrMoS2-2.SIST EN 10297-1:2003
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