SIST EN 10297-1:2003
(Main)Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes
Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes
This Part of this European Standard specifies the technical delivery conditions for seamless circular tubes made of non-alloy and alloy steels for mechanical and general engineering purposes.
Nahtlose kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische Anwendungen - Technische Lieferbedingungen - Teil 1: Rohre aus unlegierten und legierten Stählen
Dieser Teil der EN 10297 enthält die technischen Lieferbedingungen für nahtlose Rohre mit kreisförmigem Querschnitt aus unlegierten und legierten Stählen, die für die Anwendung im Maschinenbau und für allgemeine technische Anwendungen bestimmt sind.
Tubes 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 allié
La présente partie de l'EN 10297 spécifie les conditions techniques de livraison des tubes sans soudure de section circulaire en acier non allié et allié pour utilisation en mécanique générale et en construction mécanique.
Okrogle nevarjene jeklene cevi za strojništvo in splošno uporabo v tehniki – Tehnični dobavni pogoji – 1. del: Cevi iz nelegiranih in legiranih jekel
General Information
Relations
Standards Content (Sample)
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
SIST EN 10297-1:2003
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
EN 10297-1:2003 (E)2ContentspageForeword.41Scope.52Normative references.53Terms and definitions.64Symbols.75Classification and designation.75.1Classification.75.2Designation.76Information to be supplied by the purchaser.86.1Mandatory information.86.2Options.96.3Example of an order.97Manufacturing process.107.1Steelmaking process.107.2Deoxidation process.107.3Tube manufacture and delivery conditions.108Requirements.128.1General.128.2Chemical composition.128.3Mechanical properties.158.4Hardness requirements.228.5Hardenability.228.6Appearance and soundness.238.7Straightness.238.8End preparation.238.9Dimensions, masses, tolerances and sectional properties.239Inspection.279.1Types of inspection.279.2Inspection documents.279.3Summary of inspection and testing.2810Sampling.2910.1Frequency of tests.2910.2Preparation of samples and test pieces.3011Test methods.3111.1Tensile test.3111.2Impact test.3111.3Hardenability test.3211.4Hardness test.3211.5Leak tightness test.3211.6Non-destructive testing.3311.7Dimensional inspection.3311.8Visual examination.3311.9Material identification.3311.10Retests, sorting and reprocessing.3312Marking.33SIST EN 10297-1:2003
EN 10297-1:2003 (E)313Protection.34Annex A (normative)
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
EN 10297-1:2003 (E)4ForewordThis document (EN 10297-1:2003) has been prepared by Technical Committee ECISS /TC 29, "Steel tubes andfittings for steel tubes" the secretariat of which is held by UNI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by August 2003, and conflicting national standards shall be withdrawn at the latest byAugust 2003.In this European Standard the annexes A, C, D and E are normative and annex B is informative.Another Part of EN 10297 in course of preparation is :¾ Part 2 : Stainless steel tubesAnother European Standard series covering welded tubes for mechanical and general engineering purposes iscurrently being prepared.prEN 10296, Welded circular steel tubes for mechanical and general engineering purposes — Technical deliveryconditions.Other European Standard series being prepared in this area are prEN 10294 for hollow bars for machining andprEN 10305 for steel tubes for precision applications.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 10297-1:2003
EN 10297-1:2003 (E)51 ScopeThis Part of EN 10297 specifies the technical delivery conditions for seamless circular tubes made of non-alloy andalloy steels for mechanical and general engineering purposes.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature.EN 10020, Definition and classification of grades of steel.EN 10021, General technical delivery requirements for steel and iron products.EN 10027-1, Designation systems for steel — Part 1: Steel names, principal symbols.EN 10027-2, Designation systems for steel — Part 2: Numerical system.EN 10045-1, Metallic materials — Charpy Impact test — Part 1: Test method.EN 10052, Vocabulary of heat treatment terms for ferrous products.prEN 10168, Iron and steel products — Inspection documents – List of information and description.EN 10204, Metallic products — Types of inspection documents.EN 10220, Seamless and welded steel tubes - General tables of dimensions and masses per unit length.EN 10246-1, Non-destructive testing of steel tubes — Part 1: Automatic electromagnetic testing of seamless andwelded (except submerged arc-welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness.EN 10246-3, Non-destructive testing of steel tubes — Part 3 : Automatic eddy current testing of seamless andwelded (except submerged arc-welded) steel tubes for the detection of imperfections.EN 10246-5, Non-destructive testing of steel tubes — Part 5 : Automatic full peripheral magnetic transducer/fluxleakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detectionof longitudinal imperfections.EN 10246-7, Non-destructive testing of steel tubes — Part 7 : Automatic full peripheral ultrasonic testing ofseamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal imperfections.EN 10256, Non-destructive testing of steel tubes — Qualification and competence of level 1 and 2 non-destructivetesting personnel.CR 10260:1998, Designation systems for steel - Additional symbols.prEN 10266, Steel tubes, fittings and structural hollow sections — Symbols and definition of terms for use inproduct standards.EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanicaltesting (ISO 377:1997).SIST EN 10297-1:2003
EN 10297-1:2003 (E)6EN ISO 642, Steel — Hardenability test by end quenching (Jominy test) (ISO 642:1999).EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels(ISO 2566-1:1984).EN ISO 6506-1, Metallic materials - Brinell hardness test — Part 1: Test method (ISO 6506-1:1999).EN ISO 6508-1:1999, Metallic materials - Rockwell hardness test — Part 1 : Test method (scales A, B, C, D, E, F,G, H, K, N, T) (ISO 6508-1:1999).EURONORM 103, Micrograph determination of the ferritic or austenitic grain size of steels.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 10020, EN 10021, EN 10052and prEN 10266 and the following terms and definitions apply.3.1fine grain steelsteel having an austenitic/ferritic grain size equal to or finer than 6 when measured in accordance withEURONORM 1033.2normalizing rollinga rolling process in which the final deformation is carried out in a certain temperature range leading to a materialcondition equivalent to that obtained after normalizing so that the specified values of the mechanical properties areretained even after normalizing (+N)NOTEDelivery condition of tubes manufactured by a normalizing rolling process or normalized by heat treatment in afurnace are both identified with the same symbol.3.3as rolledformed after heating into the austenitic region (i.e. above AC 3) without subsequent heat treatment (+AR)3.4annealingheat treatment at a temperature slightly below AC 1 (+A)3.5TH treatmentheat treatment with the object of achieving a hardness within a specified range (+TH)3.6FP treatmentheat treatment with the object of producing a ferritic and pearlitic structure and achieving a hardness within aspecified range (+FP)3.7employerorganization for which the person works on a regular basisNOTEThe employer may be either the tube manufacturer or a third party organization providing non-destructive testing(NDT) services.SIST EN 10297-1:2003
EN 10297-1:2003 (E)74 SymbolsSee prEN 10266 and CR 10260.5 Classification and designation5.1 ClassificationIn accordance with EN 10020 the grades in Tables 3, 4 ,5, 6 and A1 are classified as given in Table 1.5.2 DesignationFor tubes covered by this Part of this European Standard the steel designation consists of:¾ the number of this Part of this European Standard (EN 10297-1) ;plus either :¾ the steel name in accordance with EN 10027-1 and CR 10260 ;or¾ the steel number allocated in accordance with EN 10027-2.These are given in Table 1.SIST EN 10297-1:2003
EN 10297-1:2003 (E)8Table 1 — Classification of steel grades and delivery conditionSteel gradeSteel nameSteel numberNormal deliverycondition aClassification in accordancewith EN 10020E235E275E315E3551.03081.02251.02361.0580+ARor+NE4701.0536+ARNon-alloy quality steelE275K2E420J2E355K21.04561.05991.0920+NAlloy quality steelE460K21.8891+NAlloy special steelE590K21.0644+QTNon-alloy special steelE730K21.8893+QTAlloy special steelC22E1.1151C35E1.1181C45E1.1191C60E1.122138Mn61.1127+N or +QTNon-alloy special steel41Cr41.703525CrMo41.721830CrMo41.721634CrMo41.722042CrMo41.722536CrNiMo41.651130CrNiMo81.658041NiCrMo7-3-21.6563+QTAlloy special steelC10E1.1121C15E1.1141C15R1.1140Non-alloy special steel16MnCr51.713116MnCrS51.713920NiCrMo2-21.652320NiCrMoS2-21.6526+A, +TH, +FP, +NAlloy special steelaAt the discretion of the manufacturer, the tube may be cold finished. The tube shall then be annealed ornormalized, to achieve the required properties.6 Information to be supplied by the purchaser6.1 Mandatory informationThe following information shall be supplied by the purchaser at the time of enquiry and order :1) the quantity (mass or total length or number);2) the term "tube";SIST EN 10297-1:2003
EN 10297-1:2003 (E)93) the dimensions (outside diameter, wall thickness) (see 8.9.1);4) the designation according to this Part of this European Standard (see 5.2);5) the delivery condition (see 7.3.1).6.2 OptionsA number of options are specified in this Part of this European Standard, and are listed as follows with appropriateclause references. In the event that the purchaser does not indicate his wish to implement any of these options atthe time of enquiry and order the tube shall be supplied in accordance with the basic specification(See 6.1).1) Descaling (see 7.3.1);2) tensile test on sample in condition +N (see 8.3.2);3) tensile test on sample in condition +QT (see 8.3.3);4) tensile test (see 8.3.4);5) impact energy values of Table 13 (see 8.3.5);6) hardness range (see 8.4.2);7) hardness test (see 8.4.3);8) hardenability requirements of Aannex D (see 8.5);9) verification of hardenability (see 8.5);10) verification of hardenability by test (see 8.5);11) non-destructive testing (see 8.6.2);12) leak tightness test (see 8.6.2);13) exact lengths (see 8.9.2);14) specific inspection for tubes made of steels from Table 3 (see 9.1);15) inspection document 2.2 (see 9.2.1);16) inspection document 3.1.A, 3.1.C or 3.2 (see 9.2.1);17) hardenability test on a test piece taken from a sample tube (see 11.3);18) supplied tubes shall not contain areas prepared and used for hardness test (see 11.4);19) selection of the leak tightness test method by the purchaser (see 11.5.1);20) coating for transit and storage (see clause 13).6.3 Example of an orderTwenty five tonnes of tube in accordance with EN 10297-1 with specified outside diameter of 60,3 mm andspecified wall thickness of 3,6 mm grade E275 steel in the normalised delivery condition and supplied with specificinspection.SIST EN 10297-1:2003
EN 10297-1:2003 (E)1025 tTube
-- 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
EN 10297-1:2003 (E)11Table 2 — Summary of delivery conditions, related options and requirementsApplicableTable(s)ApplicableTable(s)DeliveryconditionHardenabilityrequirementTest requirements aCastanalysisTensile testImpact testHardenabilityverification or testHardness testStandardconditionSimulated +NconditionSimulated +QTcondition+AR
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
EN 10297-1:2003 (E)128 Requirements8.1 GeneralTubes, when supplied in a delivery condition indicated in 7.3.1 and inspected in accordance with clause 9, shallconform to the requirements of this Part of this European Standard.In addition the general technical delivery requirements specified in EN 10021 apply.8.2 Chemical compositionThe cast analysis reported by the steel producer shall apply and shall conform to the requirements of Tables 3, 4,5, 6 and Table A.1.In case of dispute the permissible deviations of a product analysis from the limits on cast analysis specified inTables 3, 4, 5, 6 and Table A.1 are given in Table 7.NOTE When welding tubes produced according to this part of EN 10297, account should be taken of the fact that thebehaviour of the steel during and after welding is dependent not only on the steel and the delivery condition but also on theconditions of preparing for and carrying out welding. Not all of the steels specified in this standard are able to be welded unlessspecialised techniques are employed by specialist welders.Table 3 — Chemical composition (cast analysis) for non-alloy quality steel, in % by mass aSteel gradeCSiMnPSOtherelementsSteel nameSteelnumbermin.max.min.max.min.max.max.max.E2351.03080,17-0,35-1,200,0300,035E2751.02250,21-0,35-1,400,0300,035E3151.02360,21-0,30-1,500,0300,035E355 b1.05800,22-0,55-1,600,0300,035E4701.05360,160,220,100,501,301,700,0300,035Al min 0,010,N max. 0,020,Nb max. 0,07,V 0,08/0,15aSee also 7.1.bAdditions of Nb, V and Ti are permitted at the discretion of the manufacturer, the content of these elements shallbe reported.SIST EN 10297-1:2003
EN 10297-1:2003 (E)13Table 4 — Chemical composition (cast analysis) for tubes with specified impact properties in % by massaSteel gradeCSiMnPSCrMoNiAlTotal bCuNNbTiVSteel nameSteelnumbermin.max.min.max.min.max.max.max.max.min.max.min.max.min.max.max.max.max.min.max.E275K21.0456-0,20-0,400,501,400,0300,0300,30-0,10-0,300,0200,350,0150,050,03-0,05E355K21.0920-0,20-0,500,901,650,0300,0300,30-0,10-0,500,0200,350,0150,050,05-0,12E420J21.05990,160,220,100,501,301,700,0300,0350,30-0,08-0,400,0100,300,0200,07 c0,050,080,15cE460K21.8891-0,20-0,601,001,700,0300,0300,30-0,10-0,800,0200,700,0250,05 c0,05-0,20cE590K21.06440,160,220,100,501,301,700,0300,0350,30-0,08-0,400,0100,300,0200,07 c0,050,080,15cE730K21.8893-0,20-0,501,401,700,0250,0250,300,300,450,300,700,0200,200,0200,050,05-0,12aSee also 7.1.bIf sufficient other N-binding elements are present the minimum total Al content does not apply.cNb + V = 0,20 % max.SIST EN 10297-1:2003
EN 10297-1:2003 (E)14Table 5 — Chemical composition (cast analysis) for tubes made of non-alloy special steels in % by massa bSteel gradeCSiMnPSSteelnameSteelnumbermin.max.min.max.min.max.max.max.C22E1.11510,170,24-0,400,400,700,0350,035C35E1.11810,320,39-0,400,500,800,0350,035C45E1.11910,420,50-0,400,500,800,0350,035C60E1.12210,570,65-0,400,600,900,0350,03538Mn61.11270,340,420,150,351,401,650,0350,035aSee also 7.1.bCr max. 0,40%, Mo max. 0,10%, Ni max 0,40%, Cr + Mo + Ni max. 0,63%.Table 6 — Chemical composition (cast analysis) for tubes made from alloy special steels in % by massaSteel gradeCSiMnPSCrMoNiSteel nameSteelnumbermin.max.max.min.max.max.max.min.max.min.max.min.max.41Cr41.70350,380,450,400,600,900,0350,0350,901,20----25CrMo41.72180,220,290,400,600,900,0350,0350,901,200,150,30--30CrMo41.72160,270,340,350,350,600,0350,0350,801,150,150,30--34CrMo41.72200,300,370,400,600,900,0350,0350,901,200,150,30--42CrMo41.72250,380,450,400,600,900,0350,0350,901,200,150,30--36CrNiMo41.65110,320,400,400,500,800,0350,0350,901,200,150,300,901,2030CrNiMo81.65800,260,340,400,300,600,0350,0351,802,200,300,501,802,2041NiCrMo7-3-2 b1.65630,380,440,300,600,900,0250,0250,700,900,150,301,652,00aSee also 7.1.b£ 0,25% Cu.SIST EN 10297-1:2003
EN 10297-1:2003 (E)15Table 7 — Permissible deviations of the product analysis from the specified limits on cast analysisElementLimiting values for thespecified analysis% by massPermissible deviation onthe product analysis% by massC£ 0,55± 0,02> 0,55 £ 0,65± 0,03Si£ 0,60± 0,05Mn£ 1,70- 0,05 / + 0,10P £ 0,035+ 0,005S£ 0,040+ 0,005Cr£ 2,00± 0,05> 2,00 £ 2,20± 0,10Mo£ 0,30± 0,03> 0,30 £ 0,50± 0,04Ni£ 2,00± 0,05> 2,00 £ 2,20± 0,07Al total ³ 0,010- 0,005Cu£ 0,35+ 0,04> 0,35 £ 0,70+ 0,07N£ 0,025+ 0,002Nb£ 0,07+ 0,01Ti£ 0,050+ 0,01V£ 0,20± 0,028.3 Mechanical properties8.3.1For tubes made of steels covered by Tables 3, 4, 5, and 6 the mechanical properties for the relevantdelivery condition in Tables 8, 9, 10,11 and 12 apply.8.3.2When specified, for tubes supplied as rolled or annealed in grades of Table 5 the mechanical properties inTable 10 shall apply for a sample submitted to a simulated normalizing treatment (see Option 2).Option 2A tensile test shall be carried out on a sample test piece from a sample heat treated to the condition+N and the results reported.8.3.3When specified, for tubes supplied normalized in grades of Table 5 and for tubes supplied as rolled orannealed in grades of Table 5 and 6 the mechanical properties in Table 12 shall apply for a sample submitted to asimulated quenched and tempered treatment (see Option 3).Option 3A tensile test shall be carried out
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.