EN 10090

STDmBSI BS EN 10090-ENGL 17’78 162466’7 0737053 075 BRITISH STANDARD ____I____ - Valve steels and alloys for internal combustion engines The European Stanàard EN 100901998 has the status of a British Standard BS EN 10090:1998 ICs 77.140.10 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. - - ` , , , ` , ` ` , , ` , ` , ` ` ` , ` , , ` , ` ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - ~~~~ ~ STD-BSI BS EN 10090-ENGL 1998 m 3624669 0737052 T O 1 m direction of the Engineering Amd. No. Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1998 BS EN 10090:1998 Date Text affected National foreword This British Standard is the English ianguage version of EN 10090:1998. It supersedes BS 9704: 1970 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISEXIO, Stainless steels, which has the responsibility to: - aid enquirem to understand the te* - present to the responsible European committee any enquiries on the - monitor related intemationai and European developments and promulgate interpretation, or proposais for change, and keep the UK inter& informed; them in the üK. A iist of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Caîalogue under the section entitled "Internaiional Standards Correspondence Index", or by using the "Find" facility of the BSI Standards Electsonic Catalogue. A British Standard does not purport to include al l the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. ~ O BSI 1998 I l ISBN O 680 29386 8 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. - - ` , , , ` , ` ` , , ` , ` , ` ` ` , ` , , ` , ` ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - EUROPEAN SMNDAFtD NO- EUR0PEE”E EUROP- NORM EN loo90 February 1998 ICs 27.020; 77.140.10 Descriptors: Iron and steel products, steels, alloy steels, engine valves, internal combustion engines, specifications English veirsion V i e steels and alloys for h k d combustion engines Aciers et alliages pour soupapes de moteurs a combustion interne Verbrennungskraftmaschinen Vmtdstähle und -1egierungen fur This European Standard was approved by CEN on 2 January 1998. CEN members are bound to comply with the CENKENELEC Internai Regulations which stipuiate the conditions for giving this European Standard the status of a national Standard without any alteration. Up-tc4at.e lists and bibiiographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). Aversion in any other language made by translation under the responsibility of a CEN member into its own language and notitied to the Central Secretanat has the same status as the official versions. CEN members are the national standards bodies of A u s a Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Centrai Secretariat: rue de Stassart 36, B-1050 Brussels O 1998 CEN AU rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 100901998 E Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,,,`,``,,`,`,```,`,,`,`````-`-`,,`,,`,`,,`--- ~~~~ ~ STDmBSI BS EN 30090-ENGL 1998 = Lb24bb9 0737054 884 Page 2 EN 10090:1998 Foreword This European Standard has been prepared by ECISSiIY: 23/SC 1, Stainless steels, the secretariat of which is held by the Normenausschuf3 Eise und StaN (FEX) of DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 1998, and conflicting national standards shall be withdrawn at the latest by August 1998. According to the CEN/CENELEC Internai Regulations, the national standards organizations of the following countries are bound to implement this European Stan- Austria, Belgium, Czech Republic, Denmark, Finiand, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Foreword 1 2 3 4 4.1 4.2 5 5.1 5.2 6 6.1 6.2 6.3 7 7.1 7.2 7.3 7.4 8 8.1 8.2 8.3 8.4 8.5 8.6 9 10 Scope Normative references Definitions Classification and designation Classification Designation Information to be supplied by the purchaser Mandatory information Supplementary information Manufacturing process Melting process Manufacture of the product Heat treatment condition and surface finish at the time of delivery Requirements Chemical composition Mechanical properties Internal and external condition Dimensions and tolerances Agreement of tests and inspection documents Number of tests Selection and preparation of samples and test pieces Test methods Retests Certification of the tests Marking Complaints Testing Annex A (informative) Technical supplement page 2 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 6 10 O BSI 1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. - - ` , , , ` , ` ` , , ` , ` , ` ` ` , ` , , ` , ` ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - ~ STD-BSI BS EN L0090-ENGL L998 1624669 0717055 710 1 Scope 1.1 This European Standard applies to the grades of wrought high-alloy materials listed in làble 1. These valve materials are used for intake and exhaust valves in reciprocating i nkd combustion engines. It is applicable to bars, wire, rod and forgings and for the surface finishes listed in note 3 of 6.3. 1.2 This European Standard does not apply to alloys resistant to wear and corrosion which are used to protect valve seat surfaces. 1.3 In addition to the specifcations of this European Standard, the general technical delivery requirements of EN 10021 are applicable, unless otherwise specified 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 10002-1, Metít.Uk materiaCs - Tensile testing - Part 1: Method of test (at ambient temperature) (including Addendum AC1: 1990). EN 10002-5, Metauic materials - Tensile testing - Part 5: Method of test at elevated kmperature. EN 10003-1, Metallic materials - Hardness test - Brinell - Part 1: Test method. EN 10020, Definition and classQication of g v n b f ~ s of steel. EN 10021, Geneml 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 sgstems f o r steel - Part 2: Numerical system. EN 10052, Vocabuhq of heat treatment terms far fèrrous products. EN 10079, Definition of steel products. EN 10109-1, Metít.Uk muteri& - Hardness test - Part 1: RoclcweU methods (scales A, B, C, D, E, 4 G, H, K) and methods N and T (scales 15N, 30N, 45N, 151: 301: 45T). EN 10204, Metallic products - mes of inspection documents (includes amendment Al: 1995). EN 10221, S u ~ m e quality classes for hot-rolled bars and rods - Technical delivery conditions. EN IS0 377, Steel and steel products - Location a,nd preparation of sampies and test pieces for mechanical testing. Page 3 EN 1o090:1998 prEN 10278, Dimensions and toierames of bright steel products. EURONORM 17l), Rod in general purpose nowalloy steel f o r cold drawing; dimensions and tolemnces. EURONORM 60'1, Hot rolled mnd bars for general purposes. EURONORM 1031), McrOscopic deterrnimtion of the femitic or austenitic grain size of steels. CR 10261, ECISS/IC 11 - Iron and sîeel - Review of available methods of chemicaE analysis. IS0 14284, Steel and iron - Sampling and preparation of samples for the detemz.ination of chemical mposi t ion. 3 Definitions For the purpose of this European Standard the following definition applies, in addition to the definitions in EN 10020, EN 10021, EN 10052, EN 10079, EN IS0 377 and IS0 14284. 3.1 valve materials steels and non-ferrous metal doys which exhibit, to varying degrees, resistance to: - heat; - thermal cyciing; - corrosion; - oxidation; - fatigue loading; - impact; - adhesive and abrasive wear valve materials are therefore used for the mmufacbm of intake and exhaust valves in reciprocating internal combustion engines 4 Classification and designation 4.1 Classincation 4.1.1 Ail steel grades are, according to EN 10020, classified as alloyed special steels. 4.1.2 Valve materiah are divided into two categories based upon structure, which is itself determined by the general chemical composition: - martensitic steels which are primarily used for intake valves and the stem portion of exhaust valves; - austenitic alloys, which are primarily used for exhaust valves. '1 It may be agreed at the time of ordering, until this EURONORM has been adopted as a European Standard, that either this EURONORM or a corresponding national standard should be applied. O BSI 1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. - - ` , , , ` , ` ` , , ` , ` , ` ` ` , ` , , ` , ` ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - ~~ ~ ~~ STD=BSI B S EN L0090-ENGL 1998 = Lb24669 0717056 657 D Page 4 EN 10090:1998 4.2 Designation 4.2.1 Names For the steel grades covered by this European Standard, the steel names as given in the relevant tables are assigned in accordance with EN 10027-1. NOTE Explanation of the names used for alloys: The preceding chemical symbols indicate the main alloy elements and the figure immediately following indicates the average content of these alloys subsequently foliowed by the other added d o y elements in short designation. 4.2.2Numbers For the steel grades covered by this European Standard, the steel numbers as given in the relevant tables are allocated in accordance with EN 10027-2. NOTE Explanation of the numbers used for alloys: The structure is set out according to EN 10027-2 with the number 2 for the material group number. This material group comprises chemically resistant and high temperature or heat resistant nickel and cobalt ailoys. 6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) the quantity to be delivered; b) the designation of the product form (e.g. “bar”); c) the number of the dimensional standard (e.g. EURONORM 60); d) the dimensions and tolerances on dimensions and shape; e) reference to this European Standard (EN 10090); f ) name or number of the steel or alloy grade (see ’ihble i); g) the heat treatment condition on delivery (see 6.3); h) all other necessary details including the intended method of processing (hot extnision or upsetting with electric resistance heating); i) if required, the type of inspection document in accordance with EN 10204 (see 8.1). EXAMPLE 10 t round bars of 30 mm diameter, dimensional tolerances as specifíed in EURONORM 60, of a steel grade according to EN lo090 with the m e X45CrSi9-3 and the number 1.4718, in the soft annealed condition (+A), intended for hot extnision, inspection document 3.1.B as specified in EN 10204: 10 t rounds EURONORM 60-30 steel EN loo90 - X46CrSiW +A, for hot extrusion EN 102043.1.B 10 t rounds EURONORM 60-30 steel EN 10090 - 1.4718 +A, for hot exbrusion EN 102û4-3.1.B or 6.2 Supplementary information The following supplementary information may be supplied by the purchaser and agreed with the manufacturer a) product analysis (see 7.1.3); b) verification of m e c M d properties in the reference heat treatment condition (see A.2.4); c) ijrnitations on non-metallic inclusions (see 7.3.1); d) surface @ty class for hot-rolled round bars and rods (see 7.3.6); e) other tests (see 8.2.2); f) special marking (see 9.1). 6 Manufacturing process 6.1 Melting process 6.1.1 Unless otherwise agreed in the order, the type of melting process (see 6.1.2) is left to the discretion of the manufacturer. 6.1.2 The non-ferrous metal alloys NiFe25Cr20NbTi and NiCr201EAI are usually produced by remelting processes. 6.2 Manufacture of the product The manufacturing process route of the product shall be at the manufacturer’s discretion. 6.3 Heat treatment condition and surface finish at the time of delivery The heat îmatment condition and surface finish of the products at the time of delivery shall be agreed when ordering. NOTE 1 Valve materials intended for subsequent processing by metal forming are normally ordered in one of the heat treatment conditions indicated in Table 3. NOTE 2 When they have become finished components, the materials are used, dependmg on their chemical composition, in the quenched and tempered or precipitation-hardened condition (see a b l e s A.1 and A.5). NOTE 3 Valve materials are mainly supplied in bar form, with one of the following surface finishes: - turned and polished; - turned and ground - ground - turned and ground, then polished - as rolled. - ground and polished; 7 Requirements 7.1 Chemical composition 7.1.1 The chemical composition of the materials, as given by the cast analysis, shall conform to the specifications in Table 1. 7.1.2 Slight deviations from the specified limits may be permitted by the purchaser, if the characteristics in use are only affected to a negligible extent. O BSI 1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 18:59:53 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. - - ` , , , ` , ` ` , , ` , ` , ` ` ` , ` , , ` , ` ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - ~ STD-BSI BS EN 30090-ENGL 3998 m l b 2 4 b b 9 0737057 593 m * * m 7.1.3 At the thne of ordering, it may be agreed that the result of the product analysis, with the permissible deviations given in Table 2, SM serve as proof that the limiting values for the cast analysis in Wle 1 have been complied with. 7.2 Mechanical properties 'pable 3 specifies values of the mechanid properties at room temperature for the soft annealed and quenched and tempered conditions of martensitic steels and for the controlled cooled and/or quenched conditions of austenitic materials (see also Tables A l to k4). 7.3 Internal and external condition 7.3.1 Any limitations on non-metallic inclusions for valve materials shall be agreed upon at the time of enquiry and order. 7.3.2 The valve malerials shall not have any internal defects detrimental to valve fabrication and use of the valves. 7.3.3 The NiCr20TiAl and NiFe25Cr20NbTi alloys shall have a grain size of 4 and/or finer when tested in accordance with EURONORM 103, but occasional comer grains shall be tolerated 7.3.4 In the case of bars which were turned or ground during finishing (see 6.3, note 3), the depth of surface defects shall not exceed the tolerance class h l l of prEN 10278. 73.5 in all other cases, the requirements governing surface qual& shall be agreed upon at the time of enquiry and order. For round bars and rods to be delivered in the hot-rolled surface condition, these requirements should where appropriate be based on EN 10221. 7.4 Dimensions and tolerances The dimensions and tolerances of the product shall comply with the requirements agreed upon at the time of enquiry and order. The agreements shall, as far as possible, be based on corresponding European Stan- and EURONORMs, or otherwise on suitable national standards. NOTE The following European Standards and EURONORMs cover dimensions andor tolerances for products included in this European Standard - for rod EURONORM 17; - for as-rolled round bars: EURONORM 60; - for bright products: prEN 10278. 8 Testing 8.1 Agreement of tests and inspection documents 8.1.1 For each delivery, the issue of one of the documents listed in 8.6 may be agreed upon at the time of enquiry and order. 8.1.2 If, in accordance with the agreements at the time of enquiry and order, a test report is to be provided, this shall cover the results of the cast analysis for all elements specified for the valve material supplied. Page 5 EN 10090:1998 8.1.3 If, in accordance with the agreements at the time of enquiry and order, an inspection certifica or an inspection report is to be provided, the specifications in 8.2 to 8.6 are to be observed 8.2 Number of tests 8.2.1 Mechanical tests 8.2.1.1 The test unit shall consist of products from the same cast, the same type of manufacturing process and the same heat treatment batch; all products of the test unit shall have cross-sections of the same form and nominal dimensions. 8.2.1.2 For the purpose of verifying the mechanical properties given in Table 3, unless otherwise agreed at the time of ordering, one sample per 10 t shall be taken from the test units as described in 8.2.1.1. As far as possible, the hardness shall be determined, otherwise the tensile test shall be carried out. 8.2.2 Other tests Where, in addition to the tests in 8.2.1, other tests are to be caxried out and certified in an inspection certificate or inspection report, this shall be agreed upon at the time of enquiry and order, together with the necessary details on the test unit and the number of tests. 8.3 Selection and preparation of samples and test pieces 8.3.1 Product analgsis For pr