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BRITISH STANDARD BS EN10210-1:1994

Hot finished structuralhollow sections of

non-alloy and fine grain

structural steels —

Part 1: Technical delivery requirements

The European Standard EN 10210-1:1994 has the status of aBritish Standard

UDC 669.14.018.29-122.4-46:620.1

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BS EN 10210-1:1994

This British Standard, havingbeen prepared under thedirection of the Iron and SteelStandards Policy Committee,was published under theauthority of the StandardsBoard and comes into effect on15 June 1994

© BSI 11-1999

The following BSI referencesrelate to the work on this

standard:Committee reference ISM/12Draft for comment 90/47916 DC

ISBN 0 580 22163 6

Cooperating organizations

The European Committee for Standardization (CEN), under whose supervisionthis European Standard was prepared, comprises the national standardsorganizations of the following countries:

Austria Oesterreichisches NormungsinstitutBelgium Institut belge de normalisationDenmark Dansk StandardiseringsraadFinland Suomen Standardisoimisliito, r.y.France Association française de normalisationGermany Deutsches Institut für Normung e.V.Greece Hellenic Organization for StandardizationIceland Technological Institute of IcelandIreland National Standards Authority of IrelandItaly Ente Nazionale Italiano di Unificazione

Luxembourg Inspection du Travail et des MinesNetherlands Nederlands Normalisatie-instituutNorway Norges StandardiseringsforbundPortugal Instituto Portuguès da QualidadeSpain Asociación Española de Normalización y CertificaciónSweden Standardiseringskommissionen i SverigeSwitzerland Association suisse de normalisationUnited Kingdom British Standards Institution

Amendments issued since publication

Amd. No. Date Comments

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Contents

PageCooperating organizations Inside front cover

National foreword iiForeword 2Text of EN 10210-1 3National annex NA (informative) Committees responsible Inside back coverNational annex NB (informative) Cross-references Inside back cover

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National foreword

This British Standard has been prepared under the direction of the Iron andSteel Standards Policy Committee and is the English language version ofEN 10210-1:1994 Hot finished structural hollow sections of non-alloy and fine

grain structural steels — Part 1: Technical delivery requirements, published bythe European Committee for Standardization (CEN). Along with BS EN 10113-1 to BS EN 10113-3, BS EN 10155, BS 7613 andBS 7668 this British Standard supersedes BS 4360:1990 which is withdrawn. A British Standard does not purport to include all the necessary provisions of acontract. Users of British Standards are responsible for their correct application.

Compliance with a British Standard does not of itself confer immunityfrom legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii,the EN title page, pages 2 to 22, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have hadamendments incorporated. This will be indicated in the amendment table on theinside front cover.

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EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 10210-1

March 1994

UDC 669.14.018.29-122.4-46:620.1

Descriptors: Metal sections, hollow profiles, hot rolled products, structural steels, unalloyed steels, classifications, designation, deliverycondition, chemical composition, mechanical properties, mechanical tests, marking

English version

Hot finished structural hollow sections of non-alloy andfine grain structural steels — Part 1: Technical delivery

requirements

Profils creux pour la construction finis àchaud en aciers de construction non alliés et àgrains fins — Partie 1: Conditions techniquesde livraison

Warmgefertigte Hohlprofile für den Stahlbauaus unlegierten Baustählen und ausFeinkornbaustählen — Teil 1: TechnischeLieferbedingungen

This European Standard was approved by CEN on 1994-03-03. CEN membersare bound to comply with the CEN/CENELEC Internal Regulations whichstipulate the conditions for giving this European Standard 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 Central Secretariat or to anyCEN member.This European Standard exists in three official versions (English, French,German). A version in any other language made by translation under theresponsibility of a CEN member into its own language and notified to theCentral Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnited Kingdom.

CEN

European Committee for StandardizationComité Européen de NormalisationEuropäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

© 1994 Copyright reserved to CEN membersRef. No. EN 10210-1:1994 E

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Foreword

This European Standard has been prepared by theTechnical Committee ECISS/TC 10, Structuralsteels — Qualities, the secretariat of which is heldby NNI.This European Standard shall be given the status ofa national standard, either by publication of anidentical text or by endorsement, at the latest bySeptember 1994, and conflicting national standardsshall be withdrawn at the latest by September 1994. According to the Internal Regulations ofCEN/CENELEC, the following countries are boundto implement this European Standard: Austria,Belgium, Denmark, Finland, France, Germany,

Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and United Kingdom.

Contents

PageForeword 21 Scope 32 Normative references 32.1 General standards 32.2 Standards for tolerances and

dimensions 32.3 Standards for testing 43 Definitions 44 Classification and designation 44.1 Classification 44.2 Designations 45 Information to be supplied by the

purchaser 55.1 General 55.2 Options 5

5.3 Example 66 Technical requirements 76.1 General 76.2 Steel manufacturing process 76.3 Delivery condition 76.4 Structural hollow section

manufacturing process 76.5 Chemical composition 76.6 Mechanical properties 86.7 Technological properties 86.8 Surface condition 86.9 Non-destructive testing of welds 96.10 Tolerances and mass 97 Inspection and testing 9

Page7.1 Types of inspection and testing 9

7.2 Types of inspection document 97.3 Product inspection and testing 98 Samples 108.1 Frequency of tests 108.2 Preparation of samples and test pieces 119 Test methods 129.1 Chemical analysis 129.2 Mechanical tests 129.3 Visual inspection and dimensional check 139.4 Non-destructive testing 13

9.5 Retests, sorting and reprocessing 1310 Marking 13 Annex A (normative) Structural hollowsections of non-alloy steels — Chemicalcomposition and mechanical properties 14 Annex B (normative) Structural hollowsections of fine grain steels — Chemicalcomposition and mechanical properties 16 Annex C (normative) Location of samplesand test pieces 18 Annex D (informative) List of nationalstandards which correspond with

EURONORMS referenced 20 Annex E (informative) The designation ofproduct steel grades in this standard andcorresponding former national designations 21Table 1 — Permissible deviations of theproduct analysis from the specified limits ofthe ladle analysis 7Table 2 — Inspection and test programme fornon-alloy steels 10Table 3 — Inspection and test programme forfine grain steels 11

Table 4 — Test units 11Table A.1 — Chemical composition — Ladleanalysis for product thickness k 65 mm 14Table A.2 — Maximum carbon equivalentvalue based on ladle analysis 14Table A.3 — Mechanical properties fornon-alloy structural steel hollow section 15Table B.1 — Chemical composition — Ladleanalyses for product thickness k 65 mm 16Table B.2 — Maximum carbon equivalentvalue based on ladle analysis 17Table B.3 — Mechanical properties 17

Table D.1 — EURONORMS withcorresponding national standards 20Table E.1 — List of corresponding formernational designations 21

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2.3 Standards for testing

EN 10002-1, Metallic materials — Tensile testing —

Part 1: Method of test (at ambient temperature).EN 10045-1, Metallic materials — Charpy impacttest — Part 1: Test method.

EURONORM 18, Selection and preparation ofsamples and test pieces for steel and iron products2).

EURONORM 103, Micrographical determination of ferritic or austenitic grain size of steel2).

prEN 10246-3, Non-destructive testing of steeltubes — Part 3: Seamless and welded (exceptsubmergedarc-welded) steel tubes — Automatic eddy currenttesting for the detection of imperfections.

prEN 10246-5, Non-destructive testing of steeltubes — Part 5: Seamless and welded (exceptsubmergedarc-welded) ferromagnetic steel tubes — Automatic full peripheral magnetic transducer/ flux leakagetesting for the detection of longitudinalimperfections.

prEN 10246-8, Non-destructive testing of steeltubes — Part 8: Electric resistance and inductionwelded steel tubes — Automatic ultrasonic testing ofthe weld seam for the detection of longitudinalimperfections.

prEN 10246-9, Non-destructive testing of steeltubes — Part 9: Submerged arc-welded steel tubes — Automatic ultrasonic testing of the weld seam for thedetection of longitudinal and/or transverseimperfections.

ISO 2566-1, Steel — Conversion of elongationvalues — Part 1: Carbon and low alloy steels.

3 Definitions

For the purposes of this European Standard, thefollowing definitions apply:

— non-alloy base steel, non-alloy quality steel

and alloy special steel: as defined in EN 10020; — inspection and testing: as defined inEN 10021; — heat treatment terms: as defined inprEN 10052; — hollow section: as defined in EN 10079; — inspection documents: as defined in EN 10204and their contents as defined inEURONORM 1682);

— normalizing rolling

A rolling process in which the final deformation

is carried out in a certain temperature rangeleading to a material condition equivalent to thatobtained after normalizing so that the specifiedvalues of the mechanical properties are retainedeven after normalizing. — supplier

The manufacturer for material supplied ex-mill,the merchant for material supplied from amerchant’s stock;

4 Classification and designation

4.1 Classification

4.1.1 Within the strength grades of the non-alloysteels given in Annex A, three qualities JR, J0, andJ2 are specified. These differ in respect of specifiedimpact requirements, method of deoxidation, limitson values of various elements with particularreference to sulfur and phosphorus and theinspection and testing requirements.In accordance with the classification systemin EN 10020 steel grade S235 is a non-alloy basesteel. All other steel grades in Annex A are non-alloyquality steels.4.1.2 Within the strength grades of the fine grain

steels given in Annex B, two qualities N and NL arespecified. These differ in respect of the carbon,sulfur and phosphorus content, and lowtemperature impact properties.In accordance with the classification system inEN 10020 steel grades S275 and S355 are non-alloyquality steels and steel grade S460 is an alloyspecial steel.

4.2 Designations

4.2.1 For the products covered by this EuropeanStandard the steel names are allocated inaccordance with EN 10027-1 and ECISS IC 10; the

steel numbers are allocated in accordance withEN 10027-2.NOTE For a list of corresponding former national designationssee Annex E, Table E.1.

4.2.2 For non-alloy steel standard hollow sectionsthe designation shall consist of:

— the number of this European Standard(EN 10210); — the capital letter S for structural steel; — the indication of the minimum specified yieldstrength for thicknesses k 16 mm expressedin N/mm2;

2) Until these EURONORMs are transformed into European Standards, they can either be implemented or reference made to thecorresponding national standards, the list of which is given in Annex D to this Part of this European Standard.

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— the capital letters JR for the qualities withspecified impact properties at room temperature; — the capital letter J and a number 0 or 2 for the

qualities with specified impact properties at 0 °

Cand – 20 °C respectively; — the capital letter H to indicate hollow sections.

4.2.3 For fine grain steel structural hollow sectionsthe designation shall consist of:

— the number of this European Standard(EN 10210-1); — the capital letter S for structural steel; — the indication of the minimum specified yieldstrength for thicknesses k 16 mm expressedin N/mm2; — the capital letter N to indicate normalized ornormalized rolled, (see 6.3); — the capital letter L for the qualities withspecified minimum values of impact energy at atemperature of – 50 °C; — the capital letter H to indicate hollow sections.

4.2.4 The product shall be designated as illustratedby the following examples:Example 1

Example 2

5 Information to be supplied by thepurchaser

5.1 General

The following information shall be supplied by thepurchaser at the time of enquiry and order:

a) the quality (mass or total length);b) the range and type of length(see prEN 10210-2);c) details of the product formHFCHS = hot finished circular hollow sectionsHFRHS = hot finished square or rectangularhollow sectionsd) the designation (see 4.2);e) the dimensions (see prEN 10210-2);f) the options required (see 5.2);g) the type of inspection document required(see 7.2 and Table 2 and Table 3).

5.2 Options

A number of options are specified in Parts 1 and 2 ofthis European Standard. Those relevant to this Partare listed below with appropriate clause references.In the event that the purchaser does not indicate hiswish to implement any of these options at the timeof enquiry and order the supplier shall supply inaccordance with the basic specification.

1.1 Product analysis shall be carried out(see 6.5.1).1.2 A maximum carbon equivalent value inaccordance with Table A.2 shall be provided fornon-alloy grades (see 6.5.2).1.3 The Cr, Cu, Mo, Ni, Ti and V ladle analysiscontents shall be reported in the inspectioncertificate or inspection report for non-alloygrades (see 6.5.2).1.4 A maximum carbon equivalent value inaccordance with Table B.2 shall be provided forfine grain steels S275 and S355 (see 6.5.3).

1.5 The ladle analysis limits for grade S460(see 6.5.3) shall be:a) V + Nb + Ti k 0,22 %; andb) MO + Cr k 0,30 %.

1.6 Impact properties of quality JO and JR shallbe verified by test. This option applies only whenproducts are ordered with specific inspection andtesting (see 6.6.4).1.7 The material shall be suitable for hot dippedgalvanized coating (see 6.7.2).1.8 Weld repairs to the body of non-alloystructural steel hollow sections shall not bepermitted (see 6.8.4).1.9 Specific inspection and testing for non-alloygrades of qualities JR and JO shall be applied(see 7.1.1).

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EN

1 0 2 1 0 -1 : 1 9 9 4

6

© B S I 1 1 -1 9 9 9

5.3 Example

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6 Technical requirements

6.1 General

Structural hollow sections of non-alloy steels shallcomply with the requirements of Annex A;structural hollow sections of fine grain steels shallcomply with the requirements of Annex B.

6.2 Steel manufacturing process

6.2.1 The steel manufacturing process shall be atthe discretion of the steel producer.6.2.2 For the non-alloy structural steels givenin Annex A, the method of deoxidation shall be asgiven in Table A.1.6.2.3 For the fine grain steels given in Annex B the

method of deoxidation shall be as given in Table B.1.6.3 Delivery condition

The products shall be delivered in the conditionsindicated below:

Qualities JR, J0 and J2 — hot finished,Qualities N and NL — normalized. Normalizedincludes normalized rolled.

NOTE Cold formed hollow sections with subsequent heattreatment to obtain equivalent metallurgical conditions to thoseobtained by normalizing rolling are deemed to meet therequirements of this standard.

6.4 Structural hollow section manufacturing

process6.4.1 Structural hollow sections shall bemanufactured by a seamless or by a weldingprocess. Welded sections manufactured by acontinuous process shall not include welds used for joining lengths of the flat rolled-strip prior toforming the hollow section except as permittedin 9.4.3.6.4.2 The fine grain steels given in Annex B shallhave a ferritic grain size equal to or finer than 6when measured in accordance withEURONORM 103.

6.4.3 Electric resistance including induction weldedhollow sections are normally supplied withouttrimming the internal weld bead.6.4.4 For quality assurance requirementssee EN 10021. If the purchaser specifies qualityassurance the appropriate standard is EN 29002.

6.5 Chemical composition

6.5.1 The ladle analysis reported by the steelproducer shall apply and shall comply with therequirements of Table A.1 of Annex A and Table B.1of Annex B.Option 1.1 (see 5.2). The purchaser may request a

product analysis at the time of enquiry and order forproducts supplied with specific inspection andtesting.

The permissible deviations of the product analysisfrom the specified ladle analysis are given in

Table 1.Table 1 — Permissible deviations of the

product analysis from the specified limits ofthe ladle analysis

When a carbon equivalent value (CEV) is required itshall be determined from the ladle analysis usingthe formula:

6.5.2 For non-alloy steel products the followingadditional requirements can be requested at thetime of enquiry and order for products supplied withspecific inspection and testing (see 7.1).

Option 1.2 (see 5.2). The CEV in accordancewith Table A.2.

Element Permissible maximumcontent in the ladle

analysis

Permissibledeviation of theproduct analysis

from specifiedlimits for theladle analysis

% %

Ca k 0,20> 0,20

+ 0,02+ 0,03

Si k 0,60 + 0,05

Mnnon-alloy k1,60 + 0,10

fine grain k1,70 – 0,05+ 0,10

Pnon-alloy k 0,045 + 0,010

fine grain k 0,035 + 0,005

Snon-alloy k 0,045 + 0,010

fine grain k 0,030 + 0,005

Nb k 0,060 + 0,010

V k 0,20 + 0,02Ti k 0,03 + 0,01

Cr k 0,30 + 0,05

Ni k 0,80 + 0,05

Mo k 0,10 + 0,03

Cu k 0,350,35 < Cu k 0,70

+ 0,04+ 0,07

N k 0,025 + 0,002

Altotal U 0,020 – 0,005a For S235JRH for thicknesses k 16 mm, the permissible

deviation = 0,04 % C, and for thicknesses > 16 k 40 mm thepermissible deviation = 0,05 % C.

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Option 1.3 (see 5.2). The recording on the inspectioncertificate or inspection report of the Cr, Cu, Mo, Ni,

Ti and V content (ladle analysis).6.5.3 For fine grain steel products the followingadditional requirements can be requested at thetime of enquiry and order.Option 1.4 (see 5.2). The CEV for steel grades S275and S355 in accordance with Table B.2.Option 1.5 (see 5.2). For steel grade S460 thefollowing limits for the ladle analysis

V + Nb + Ti k 0,22 % andMo + Cr k 0,30 %.

NOTE A maximum CEV may be agreed between the purchaserand manufacturer as an alternative to this option.

6.6 Mechanical properties

6.6.1 Under the inspection and testing conditions asspecified in clause 7 and in the delivery condition asspecified in 6.3 the mechanical properties shallcomply with the relevant requirements of Table A.3and Table B.3.NOTE Stress relief annealing at more than 580 °C or for overone hour may lead to deterioration of the mechanical properties.If the purchaser intends to stress relief anneal the products athigher temperatures or for longer times, the minimum values ofthe mechanical properties after such a treatment should beagreed at the time of the enquiry and order.

6.6.2 For impact tests standard V-notch test pieces

(see EN 10045-1) shall be used. If the nominalproduct thickness is not sufficient for thepreparation of standard test pieces, the test shall becarried out using test pieces of width lessthan 10 mm, but not less than 5 mm. The minimumaverage values given in Table A.3 and Table B.3shall be reduced in direct proportion to the actualwidth of the test piece to that of the standard testpiece.Impact tests are not required for nominalthickness < 6 mm.6.6.3 For fine grain steel hollow sections inthicknesses which do not permit impact test piecesof width U 5 mm to be taken, the ferritic grain size(see 6.4.2) shall be verified by the method asdescribed in EURONORM 103.When aluminium is used as the grain refiningelement, the grain size requirement shall be deemedto be fulfilled if the ladle analysis shows thealuminium content to be not less than 0,020 % totalaluminium or alternatively 0,015 % acid solublealuminium. In these cases, verification of the grainsize is not required.6.6.4 Subject to the limitations of 6.6.2

a) the impact properties of structural hollowsections of steel qualities J2, N and NL shall beverified;

b) the impact properties of structural hollowsections of steel qualities JR and J0 are not

verified.Option 1.6 (see 5.2). The purchaser may request atthe time of enquiry and order, for products suppliedwith specific inspection and testing (see option 1.9),that the impact properties are not verified.

6.7 Technological properties

6.7.1 Weldability

The steels specified in this European Standard shallbe suitable for welding by all appropriate weldingprocesses.NOTE 1 With increasing product thickness, increasingstrength level and increasing carbon equivalent level, the

occurrence of cold cracking in the welded zone forms the mainrisk. Cold cracking is caused by the following factors incombination:

— the amount of diffusible hydrogen in the weld metal; — a brittle structure of the heat affected zone; — significant tensile stress concentrations in the welded joint.

NOTE 2 When using recommendations as laid down forexample in Information Circular No. 2 or any other relevantstandard, the recommended welding conditions and the variouswelding ranges of the steel grades can be determined dependingon the product thickness, the applied welding energy, the designrequirements, the electrode efficiency, the welding process andthe weld metal properties.

6.7.2 Hot dipped galvanized coating

Option 1.7 (see 5.2). At the time of enquiry and

order the purchaser may request that the productsshall be suitable for hot dipped galvanized coating.

6.8 Surface condition

6.8.1 The hollow sections shall have a smoothsurface corresponding to the manufacturing methodused; bumps, cavities or shallow longitudinalgrooves resulting from the manufacturing processare permissible, provided the thickness is withintolerance.Surface defects may be removed by themanufacturer by grinding provided that thethickness of the hollow section after the repair is not

less than the minimum permissible thickness.(See prEN 10210-2 for thickness tolerance.)6.8.2 The ends of the hollow section shall be cutnominally square with the axis of the product.6.8.3 For both non-alloy and fine grain structuralsteel hollow sections manufactured by a weldedprocess repair of the weld shall be permitted.6.8.4 For non-alloy structural steel hollow sectionsmanufactured by either a seamless or weldingprocess repair of the body by welding shall bepermitted unless otherwise specified. Theconditions under which, and the extent to which

welding repair to the body may be carried out shallbe agreed between the manufacturer and thepurchaser.

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Option 1.8 (see 5.2). The purchaser may specify atthe time of enquiry and order that repair of the body

by welding shall not be carried out.For fine grain structural steel hollow sectionsmanufactured by either a seamless or weldedprocess repair of the body by welding shall not bepermitted unless otherwise agreed.6.8.5 Welding repair shall be carried out byoperators qualified in accordance with EN 287-1.Welding procedures shall be in accordance withEN 288-1 to EN 288-3. The repair weldingprocedures shall be covered by the manufacturer’squality assurance system.6.8.6 The repaired hollow section shall comply with

all the requirements of this European Standard.6.9 Non-destructive testing of welds

The seam weld of all welded hollow sectionssupplied with specific inspection and testing shallbe subjected to a non-destructive test.

6.10 Tolerances and mass

6.10.1 Tolerances

Tolerances for hot finished structural hollowsections shall be as specified in Part 2 of thisstandard (EN 10210-2).

6.10.2 Mass

Mass shall be determined using a densityof 7,85 kg/dm3.NOTE Dimensions, sectional properties and mass unit lengthfor a range of standard sizes of hot finished structural hollowsections are given in Part 2 of this standard (EN 10210-2). Thepurchaser should preferably select the dimensions of the hollowsections from this range of standard sizes.

7 Inspection and testing

7.1 Types of inspection and testing

7.1.1 Hollow sections of non-alloy steels in qualitiesJR and J0 (see Annex A) shall be subjected tonon-specific inspection and testing in accordance

with EN 10021 unless otherwise specified by thepurchaser at the time of enquiry and order.Option 1.9 (see 5.2). The purchaser may requestspecific inspection and testing at the time of enquiryand order.7.1.2 Hollow sections of non-alloy steel quality J2(see Annex A) and fine grain steels of qualities Nand NL (see Annex B) shall be subjected to specificinspection and testing in accordance withEN 10021.

7.2 Types of inspection document

7.2.1 For products supplied with non-specificinspection and testing a test report (2.2) inaccordance with EN 10204 shall be provided.

The test report shall contain the codes and relevantinformation in accordance with EURONORM 168.

A — Commercial transactions and partiesinvolved.B — Description of products to which the testreport applies.C — Information on tests as follows:

C11-C13 — Tensile test reports;C71-C92 — Chemical composition, a ladleanalysis.

Z — Authentications that the products complywith the requirements of the order.

7.2.2 For products supplied with specific inspection

and testing an inspection certificate (3.1.A, 3.1.Bor 3.1.C) or an inspection report (3.2) in accordancewith EN 10204 shall be supplied.The purchaser shall indicate in the enquiry andorder the type of inspection document required[see 5.1 g)].NOTE If an inspection document 3.1.A, 3.1.C or 3.2 is specifiedthe purchaser should notify the manufacturer of the address ofthe organization or person nominated by him to carry out theinspection and produce the certificate of conformity.

The inspection certificate or inspection report shallcontain the following codes and related informationin accordance with EURONORM 168.

A — Commercial transactions and partiesinvolved.B — Description of products to which theinspection document applies.C — Information on tests as follows:

C01-C03 — Location of sample, direction oftest pieces and test temperature;C10-C13 — Tensile test — Test piece shapeand test results;C40-C43 — Impact test — Test piece type andtest results;C71-C92 — Chemical composition — The ladleanalysis and if applicable to the productanalysis.

Z — Authentication that the products complywith the requirements of the order.

7.3 Product inspection and testing

7.3.1 General

The requirements for inspection and testing aregiven in Table 2 for hollow sections of non-alloysteels and in Table 3 for hollow sections of fine grainsteels.

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7.3.2 Non-specific inspection and testing

When products are supplied with non-specific

inspection and testing, the tests shall be carried outby the manufacturer, in accordance with his ownprocedures, to demonstrate that products made bythe same manufacturing process meet therequirements of the order. The products tested maynot necessarily be the products actually supplied.

7.3.3 Specific inspection and testing

When products are supplied with specific inspectionand testing, the tests shall be carried out on theproducts to be supplied, or on test units of which theproduct to be supplied is a part, or when applicableon all hollow sections.

8 Samples

8.1 Frequency of tests

8.1.1 For products supplied with non-specificinspection and testing see clause 7.3.2.

8.1.2 For products supplied with specific inspectionand testing the verification of the mechanical

properties and product analysis, if applicable, shallbe carried out by test unit. A test unit is defined asa quantity of hollow sections from one or morecast(s) of the same grade and dimensionsmanufactured by the same process (e.g. electricwelding, submerged arc welding), and if applicablein the same heat treatment condition, submitted foracceptance at the same time.From each test unit one sample shall be takensufficient for the preparation of the following testpieces:

— 1 tensile test piece;

— 2 sets of 3 impact test pieces; — 1 product analysis when required.

Table 2 — Inspection and test programme for non-alloy steels

Inspection and test requirements Scope of inspection and test programme and typeof document

Requirement Subclausereference(s)

Non-specific inspectionand testing

Specific inspection andtesting

Test report (2.2)a Inspection certificate(3.1 A, B or C)a

Inspection report (3.2)a

Mandatoryrequirements

1 Ladle analysis 6.59.1

One result perdelivery item

One per cast

2 Tensile test 6.69.2

One result perdelivery item

One per test unitbc

3 Impact test quality J2only

6.69.2

Not applicable One set per test unitbc

4 Surface condition anddimensions

6.86.109.3

See 9.3 See 9.3

5 NDT of the weld 6.9

9.4

Not applicable All products, fulllength

Optionalrequirements

6 Product analysis 6.59.1

Not applicable One per test unit

7 Ladle analysisadditional elements

6.59.1

Not applicable See option 1.3

8 Impact test qualitiesJR and J0

6.69.2

Not applicable One set per test unitbc (only when option 1.6is requested)

a Inspection document number from EN 10204.b For test unit see 8.1.3.c Longitudinal or transverse samples at the discretion of the manufacturer.

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Table 3 — Inspection and test programme for fine grain steels

8.1.3 The test unit shall consist of the tonnage ofsections as specified in Table 4.Table 4 — Test units

8.2 Preparation of samples and test pieces

8.2.1 Selection and preparation of samples forchemical analysis

Samples for product analysis shall be taken fromthe test pieces or samples for mechanical testing orfrom the whole thickness of the hollow section at thesame location as for the mechanical test samples.The preparation of samples shall be in accordancewith EURONORM 18.

8.2.2 Location and orientation of samples formechanical tests

8.2.2.1 Tensile test pieces

The test pieces for tensile testing shall comply withthe following:

a) for circular, rectangular or square sections, thetest piece may be the full section of the product;b) for circular sections, not tested in full section,the test pieces shall be taken longitudinally andshall be taken at a point remote from the weld(see Annex C); Alternatively, at the discretion of themanufacturer, transverse test pieces may betaken;c) for square or rectangular sections, not tested infull section, the test pieces shall be takenlongitudinally, midway between the corners,from one of the sides not containing the weld(see Annex C). Alternatively, at the discretion of themanufacturer, transverse test pieces may betaken.

Inspection and test requirements Scope of inspection and test

programme and type ofdocument

Requirement Subclause reference(s) Specific inspection andtesting

Inspection certification(3.1 A, B or C)a Inspection

report (3.2)a

Mandatoryrequirements

1 Ladle analysis 6.59.1

One per cast

2 Tensile test 6.69.2

One per test unitbc

3 Impact test 6.6

9.2

One set per unitbc

4 Surface condition anddimensions

6.86.109.3

see 9.3

5 NDT of the weld 6.99.4

All products, full length

Optionalrequirements

6 Product analysis 6.59.1

One per test unitb

a Inspection document numbers from EN 10204.b For test unit see 8.1.3.c Longitudinal or transverse samples at the discretion of the manufacturer.

Type of section Test unit

Circular Square or rectangular

Outsidediameter

D

External perimeter Mass (tonnes)

mm mm t

k 114,3 k 400 k 40

> 114,3k 323,9

> 400k 800

k 50

> 323,9 > 800 k 75

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8.2.2.2 Impact test pieces

Test pieces for impact testing shall comply with the

following;a) for circular sections the test pieces shall betaken longitudinally and shall be taken at a pointremote from the weld (see Annex C). Alternatively, at the discretion of themanufacturer, transverse test pieces may betaken;b) for square or rectangular sections the testpieces shall be taken longitudinally, midwaybetween the corners, from one of the sides notcontaining the weld (see Annex C). Alternatively, at the discretion of the

manufacturer, transverse test pieces may betaken.

8.2.3 Preparation of test pieces for mechanicaltests

The requirements of EURONORM 18 shall apply inconjunction with the test piece location specified inclause 8.2.2.

8.2.3.1 Tensile test pieces

The requirements of EN 10002-1 as appropriateshall apply.Test pieces may be non-proportional but in cases of

dispute proportional test pieces having a gaugelength L0 = 5,65ÆS 0 shall be used (see 9.2.1).

8.2.3.2 Impact test pieces

Impact V-notch test pieces shall be machined andprepared in accordance with EN 10045-1. Inaddition, the following requirements apply:

a) for nominal thicknesses > 12 mm, standardtest pieces shall be machined in such a way thatone side is not further away than 2 mm from arolled surface;b) for nominal thicknesses k 12 mm, when testpieces with reduced sections are used, the width

shall be U 5 mm.NOTE Test piece size is dependent on the actual thickness ofthe sample and, for circular hollow sections, allowance also needsto be made for the curvature of the section.

9 Test methods

9.1 Chemical analysis

The elements to be determined and reported shallbe those given in Table A.1 of Annex A, unlessoption 1.3 is requested (see 5.2) or in Table B.1of Annex B.The choice of a suitable physical or chemical

analytical method for the analysis shall be at thediscretion of the manufacturer.

In case of disputes, the method used shall be agreedtaking into account the relevant existing European

Standards.9.2 Mechanical tests

Tensile tests shall be carried out in the temperaturerange 10 °C to 35 °C. Impact tests shall be carriedout at the temperatures specified in Table A.3 fornon-alloy steels and Table B.3 for fine grain steels.

9.2.1 Tensile tests

The tensile test shall be carried out in accordancewith EN 10002-1.For the specified yield strength in Table A.3and Table B.3, the upper yield stress (ReH) shall bedetermined.If a yield phenomenon is not present, the 0,2 % proofstrength (Rp0,2) or the 0,5 % total extension (Rt0,5)shall be determined. In cases of dispute, the 0,2 %proof strength (Rp0,2) shall apply.If a non-proportional test piece is used, thepercentage elongation value obtained shall beconverted to the value for a gauge lengthL0 = 5,65ÆS 0 using the conversion tables given inISO 2566-1.

9.2.2 Impact tests

The impact test shall be carried out in accordance

with EN 10045-1 and shall be assessed inaccordance with EN 10021 as follows:a) the averaged value of a set of three test piecesshall meet the specified requirement. Oneindividual value may be below the specifiedvalue, provided that it is not less than 70 % ofthat value;b) if the conditions under a) are not satisfied thenan additional set of three test pieces shall betaken from the same sample and tested. Toconsider the test unit as conforming, after testingthe second set, the following conditions shall besatisfied simultaneously:

1) the average value of six tests shall be equalto or greater than the specified value;2) not more than two of six individual valuesmay be lower than the specified value;3) not more than one of the six individualvalues may be lower than 70 % of the specifiedvalue;

c) if these conditions are not satisfied the sampleproduct is deemed not to comply with thisstandard and retests may be carried out on theremainder of the test unit (see 9.5).

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9.3 Visual inspection and dimensional check

9.3.1 Visual inspection

The hollow sections shall be visually inspected forcompliance with the requirements of 6.8.

9.3.2 Dimensional check

The dimensions of the hollow sections shall bechecked for compliance with the requirements ofPart 2 of this standard (EN 10210-2).

9.4 Non-destructive testing

9.4.1 When the welds of welded structural hollowsections are to be subjected to non-destructivetesting the method shall be in accordance with 9.4.2 or 9.4.3. At the manufacturer’s discretion the NDT

may be carried out either on the round circularshape prior to final forming or on the round, squareor rectangular hollow sections after final forming.9.4.2 Longitudinally butt welded and electricresistance including induction welded sections. Theweld seam of the hollow sections shall be tested inaccordance with one of the following EuropeanStandards. The standard to be applied is at thediscretion of the manufacturer.

a) prEN 10246-3 to acceptance level E4 with theexception that the rotating tube/pancake coiltechnique shall not be permitted.

b) prEN 10246-5 or prEN 10246-8 with theexception that the acceptance level shall be basedon the use of N 15 internal/external notches.

9.4.3 Submerged arc welded sections. The weldseam of hollow sections shall be tested to level U4 in

accordance with prEN 10246-9.Butt welds used to join lengths of strip/platetogether in the spiral submerged arc weld processshall be permitted, provided that the butt weld istested to the same type of procedure and meets thesame acceptance level as the main weld seam.

9.5 Retests, sorting and reprocessing

For retests, sorting and reprocessing in accordancewith EN 10021 shall apply with the provision that ifsorting is carried out each individual product shallbe subjected to the test which failed.

10 Marking10.1 Except as provided for in 10.2 for hollowsections which are bundled, each hollow sectionshall be marked by suitable and durable methodssuch as painting, stamping, adhesive labels orattached tags with the following:

— the abridged designation,e.g. EN 10210-S275J0; — the manufacturer’s name or trademark.

Examples: EN 10210-S235JR + TrademarkEN 10210-S275NL + Manufacturer’s name

10.2 Where the products are supplied bundled, themarking required in 10.1 may be on a label whichshould be securely attached to the bundle.

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Annex A (normative)Structural hollow sections of non-alloy steels — Chemical composition and

mechanical propertiesTable A.1 — Chemical composition — Ladle analysis for product thickness k 65 mm

Table A.2 — Maximum carbon equivalent value based on ladle analysis

Designation Type ofdeoxidationa

Subgroupb

C%

max.

Si%

max.

Mn%

max.

P%

max.

S%

max.

N%

max.cd

According toEN 10027-1 and

IC 10

According toEN 10027-2

Nominalthickness (mm)

k 40 > 40k 65

S235JRH 1.0039 FN BS 0,17 0,20 — 1,40 0,045 0,045 0,009

S275J0H 1.0149 FN QS 0,20 0,22 — 1,50 0,040 0,040 0,009

S275J2H 1.0138 FF QS 0,20 0,22 — 1,50 0,035 0,035 —

S355J0H 1.0547 FN QS 0,22 0,22 0,55 1,60 0,040 0,040 0,009

S355J2H 1.0576 FF QS 0,22 0,22 0,55 1,60 0,035 0,035 — a The deoxidation methods are designated as follows:

FN — Rimming steel not permitted

FF — Fully killed steel containing nitrogen binding elements in amounts sufficient to bind available nitrogen (e.g. min. 0,020 %total Al, or 0,015 % soluble Al).

b BS = base steel. QS = quality steel.c It is permissible to exceed the specified values provided that for each increase of 0,001 % N the P max. content will be reducedby 0,005 %, the N content of the ladle analysis, however, shall not be more than 0,012 %.d The max. value for nitrogen does not apply if the chemical composition shows a minimum total Al content of 0,020 % with aminimum Al/N ratio of 2 : 1, or if sufficient other N-binding elements are present. The N-binding elements shall be mentioned inthe Inspection Document.

Designation Maximum CEV in % for nominalthicknesses in mm

New according to EN 10027-1 andIC 10

According to EN 10027-2 k 16 > 16k 40

> 40k 65

S235JRHS275J0HS275J2HS355J0HS355J2H

1.00391.01491.01381.05471.0576

0,370,410,410,450,45

0,390,430,430,470,47

0,410,450,450,500,50

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Table A.3 — Mechanical properties for non-alloy structural steel hollow section

Designation Minimum yield strength ReH in N/mm2

Tensile strength Rm inN/mm2

Minimum percentage elongation Lo = 5,65ÆS o

Impact properties

According toEN 10027-1 and

IC 10


Nominal thickness in mm Nominal thickness in mm Longitudinal Transverse Test temperature°C

Minimum averageabsorbed energy (J)

for standard testpiecesbk 16 > 16

k 40> 40k 65

< 3 U 3 k 65 Nominal thickness in mm

k 40> 40k 65 k 40

> 40k 65

S235JRHa 1,0039 235 225 215 360–510 340–470 26 25 24 23 20 27

S275J0Ha 1,0149 275 265 255 430–580 410–560 22 21 20 19 0 27

S275J2Ha 1,0138 – 20 27

S355J0Ha 1,0547 355 345 335 510–680 490–630 22 21 20 19 0 27

S355J2H 1,0576 – 20 27a The impact properties are verified only when specified at the time of the enquiry and order for products supplied with specific inspection and testing.b For impact properties for reduced section test pieces see 6.6.2.

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Annex B (normative)Structural hollow sections of fine grain steels — Chemical composition and mechanical properties

Table B.1 — Chemical composition — Ladle analyses for product thickness k 65mm

Designation Type ofdeoxidationa

Subgroupb

C%

max.

Si%

max.

Mn%

max.

P%

max.

S%

max.

Nb%

max.

V %

max.

Al total%

max.c

Ti%

max.

Cr%

max.

Ni%

max.

Mo%

max.

Cu%

max.d

N%

max.

According toEN 10027 and

IC10


S275NH 1.0493GF QS

0,20 0,40 0,50– 1,40

0,035 0,030 0,050 0,05 0,020 0,03 0,30 0,30 0,10 0,35 0,015

S275NLH 1.0497 0,030 0,025

S355NH 1.0539GF QS

0,20 0,50 0,90– 1,65

0,035 0,030 0,050 0,12 0,020 0,03 0,30 0,50 0,10 0,35 0,015

S355NLH 1.0549 0,18 0,030 0,025

S460NH 1.8953GF SS

0,20 0,60 1,00– 1,70

0,035 0,030 0,050 0,20 0,020 0,03 0,30 0,80 0,10 0,70 0,025

S460NLH 1.8956 0,030 0,025a The deoxidation method is designated as follows:

GF = Full killed steel containing nitrogen binding elements in amounts sufficient to bind the available nitrogen and having a fine grains structure .b QS = quality steel. SS = special steel.c If sufficient N-binding elements are present, the minimum total Al content does not apply.d If the copper content is greater than 0,30 % then the nickel content shall be at least half of the copper content.

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Table B.2 — Maximum carbon equivalent valuebased on ladle analysis

Table B.3 — Mechanical properties

Designation Type ofdeoxidation

Maximum CEVfor nominal

thicknesses inmm

Newaccording toEN 10027-1and IC 10


k 16 > 16 k 65

S275NH 1.0493GF

0,40 0,40

S275NLH 1.0497

S355NH 1.0539GF

0,43 0,45

S335NLH 1.0549

S460NHa 1.8953 GF — — S460NLHa 1.8956a See 6.5.3 option 1.5

Designation Minimum yield ReH inN/mm2

Tensilestrength Rm

in N/mm2

Minimum percentageelongation Lo = 5,65ÆS o

Impact properties

Accordingto

EN 10027-1and IC 10

Accordingto

EN 10027-2

Nominal thicknessin mm

Nominal thickness in mmk 65

Testtemperature

Minimumaverage

absorbedenergy (J)

for standardtest piecesa

k 16 > 16k 40

> 40k 65

Longitudinal Transverse °C

S275NH 1.0493 275 265 255 370–540 24 22 – 20 40

S275NLH 1.0497 – 50 27

S355NH 1.0539 355 345 335 470–630 22 20 – 20 40

S355NLH 1.0549 – 50 27

S460NH 1.8953 460 440 430 550–720 17 15 – 20 40

S460NLH 1.8956 – 50 27a For impact properties for reduced section test pieces (see 6.6.2).

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Annex C (normative)Location of samples and test pieces

This annex gives information on the location of samples and test pieces for hollow sections (see 8.2.2).Position of test samples for impact test

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Annex D (informative)List of national standards which correspond with EURONORMS referencedUntil the following EURONORMS are transformed into European Standards, they can either be implemented or reference made to thecorresponding national standards as listed in Table D.1.

Table D.1 — EURONORMS with corresponding national standards

EURONORMS

Corresponding national standard in

Germany FranceUnited

KingdomSpain Italy Belgium Portugal Sweden Austria Norway

18 — NF A 03-111 BS 4360 UNE 36-300 UNI EU 18 NBN A 03-001 NP-2451 SS11 01 20 — NS 10 005

103 DIN 50 601 NF A 04-102 BS 4490 UNE 7-280 UNI EU 103 NBN A 14-101 NP-1787 — — —

168 — NF A 03-116 BS 4360 UNE 36-800 UNI EU 168 — — SS11 00 12 — —

InformationCircular No. 2

SEW 088 NF A 36-000 BS 5135 — — — — SS06 40 25

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Annex E (informative)The designation of product steel grades in this standard and corresponding former national designations

Table E.1 — List of corresponding former national designations

Designation Equivalent former designations in

Accordingto

EN 10027-1and IC 10


Germany France UnitedKingdom

Spain Italy Belgium Sweden Portugal Austria Norway

Steelnumber

S235JRH 1.0039 1.0037 St 37-2 E 24-2 Fe 360B AE 235-B 13 11-00 Fe 360B NS 12 120S275J0HS275J2H

1.01491.0138

1.01441.0144

St 44-3USt 44-3N

E 28-3E 28-4

43 C43 D

AE 275C AE 275D

Fe 430CFe 430D

AE 255-C AE 255-D 14 14-01

Fe 430CFe 430D

St 430CSt 430D

NS 12 143NS 12 143

S2355J0HS355J2H

1.05471.0576

1.05701.0570

St 52-3USt 52-3N

E 36-3 50 C50 D

AE 355C AE 355D

Fe 510CFe 510D

AE 355-C AE 355-D

Fe 510CFe 510D

St 510CSt 510D

NS 12 153NS 12 153

S275NHS275NLH

1.04931.0497

1.04861.0488

St E 285 NTSt E 285 N

— 43 EE

S355NHS355NLH

1.05391.0549

1.05621.0566


— 50 EE

S460NHS460NLH

1.89531.8956

1.89051.8915


— 55 EE

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National annex NA (informative)Committees responsible

The United Kingdom participation in the preparation of this European Standard was entrusted by the Ironand Steel Standards Policy Committee (ISM/-) to Technical Committee ISM/12 upon which the followingbodies were represented:

BEAMA Ltd.British Constructional Steelwork Association Ltd.British Railways BoardBritish Steel IndustryDepartment of TransportInstitution of Structural EngineersLloyd’s Register of ShippingNational Association of Steel StockholdersRailway Industry Association of Great BritainSociety of Motor Manufacturers and Traders Ltd.Steel Construction InstituteWelding Institute

National annex NB (informative)Cross-references

Publication referred to Corresponding British Standard

EN 287-1:1992 BS EN 287 Approval testing of welders for fusion welding Part 1:1992 SteelsBS EN 288 Specification and approval of welding procedures for metallic materials

EN 288-1:1992 Part 1:1992 General rules for fusion welding

EN 288-2:1992 Part 2:1992 Welding procedures specification for arc welding

EN 288-3:1992 Part 3:1992 Welding procedure tests for the arc welding of steels

EN 10002-1:1990 BS EN 10002 Tensile testing of metallic materialsPart 1:1990 Method of test at ambient temperature

EN 10020:1988 BS EN 10020:1991 Definition and classification of grades of steelBS EN 10027 Designation systems for steel

EN 10027-1:1992 Part 1:1992 Steel names, principal symbols

EN 10027-2:1992 Part 2:1992 Steel numbersEN 10045-1:1990 BS EN 10045 Charpy impact test on metallic materials

Part 1:1990 Test method (V- and U-notches)

EN 10079:1992 BS EN 10079:1993 Definition of steel products

EN 10204:1991 BS EN 10204:1991 Metallic products. Types of inspection, documents

EURONORM 52 BS 6562 Terms used in the iron, and steel industryPart 1:1985 Glossary of heat treatment terms

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