Unknown INTERNATIONAL STANDARD IS0 683 l 5 Second edition 1992 08 15 Heat treatable steels, alloy steels and free cutting steels Part 15 Valve steels for internal combustion engines Aciers pour traite[.]
IS0 683-l INTERNATIONAL STANDARD Second edition 1992-08-15 Heat-treatable steels, alloy steels and free-cutting steels Part 15: Valve steels for internal Aciers pour dCcol/etage Partie traitement thermique, combustion aciers alli& engines et aciers pour - 15: Aciers pour soupapes de moteurs g combustion interne `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Reference number IS0 683-l 5: 1992(E) Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies) The work of preparing International Standards is normally carried out through IS0 technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote International Standard IS0 683-15 was prepared by Technical Committee ISO/TC 17, Steel, Sub-Committee SC 4, Heat treatable and alloy steels This (IS0 second edition cancels and 683-15:1976), of which it constitutes replaces a technical the first revision IS0 683 consists of the foliowing parts, under the treatable steels, alloy steels and free-cutting steels: - Part 1: Direct-hardening in form of different black unalloyed products - Part 9: Wrought - Part 10: Wrought nitriding - Part I: Wrought case-hardening - Part 13: Wrought stainless - Part 14: Hot-rolled steels - Part 15: Valve - Part 16: Precipitation - Part 17: Ball free-cutting steels low-alloyed title Heat- wrought steel steels steels steels steels for quenched for internal and roller and general edition hardening bearing and tempered combustion stainless springs engines steels steels IS0 1992 All rights reserved No part of this publication may be reproduced or by any means, electronic or mechanical, Including photocopying permission in writing from the publisher or utilized in any form and microfilm, without International Orgamzation for Standardization Case Postale 56 l CH-1211 Genbve 20 l Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Foreword IS0 683-15:1992(E) Annex Part 18: Bright A of this products of unalloyed and low alloy part of IS0 683 is for information steels only `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - III Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT INTERNATIONAL Heat-treatable Part 15: Valve steels IS0 STANDARD steels, alloy steels and free-cutting for internal combustion - engines IS0 404:1992, Steel and steel technical delivery requirements IS0 783:1989 Metallic elevated temperature 1.2 This part of IS0 683 does resistant to wear and corrosion protect valve seat surfaces products IS0 643:1983, Steels - Micrographic of the ferrific or ausfenitic grain size It is applicable to bars, wire wire rod and forgings and for the surface finishes listed in note of 6.2 not apply to alloys which are used to 1.3 In addition to this part of IS0 683, the general technical delivery requirements of IS0 404 are applicable Normative steels IS0 377-2:1989, Selection and preparation of sanJples and test pieces of wrought steels - Part 2: Samples for the determination of the chemical composition Scope 1.1 This pat? of IS0 683 applies to the grades of wrought high-alloy materials listed in table These valve materials are used for intake and exhaust valves in reciprocating internal combustion engines 683-15:1992(E) materials IS0 1035-1:1980, Hot-rolled mensions of round bars steel IS0 1035-4:1982, erances steel IS0 6506:1981, Brine// test Hot-rolled Metallic - materials - General determination Tensile bars bars - testing - Part at I: Di- Part 4: Tol- Hardness test IS0 6508:1986 Metallic materials - Hardness lest Rockwell test (scales A - B - C - D - E - F - G - H - references Kl The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 683 At the time of publication, the editions indicated were valid All standards are subject to revision, and parties to agreements based on this part of IS0 683 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below Members of IEC and IS0 maintain registers of currently valid International Standards IS0 286-1:1988, IS0 system of limits and fits Part I: Bases of tolerances, deviations arJtJ fits IS0 377-1:1989, and test pieces and test pieces Selection and preparation of wrought steels - Part for mechanical test IS0 6892:1984 Mefallic IS0 8457-l : 1989, Steel and tolerances materials wire rod - Part ISO/TR 9769:1991, Steel and iron able methods of analysis - IS0 10474:1991, Steel spection documents of samples 1: Samples and Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT steel - testing I: Dimensions IS0 9443:1991, Heat-treatable and alloy Surface qualify classes for hot-rolled round wire rods ~-~TectJnica/ delivery conditions `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Tensile steels bars Review prOdlJCtS a/Jd of avail- - In- 683-l 5:1992(E) d) the designation Definition e) the number For the purposes of this part of IS0 683, the following definition applies 3.1 valve materials: alloys which exhibit, to: - heat, - thermal corrosion, - oxidation, - fatigue impact, - adhesive f) Steels and non-ferrous metal to varying degrees, resistance and abrasive wear classification for the manufacin reciprocating condition and categorization listed in this part of IS0 683 are to their chetnical composition Valve materials are divided into two categories based upon structure, which is itself determined by the general chemical composition: delivery (see the intended or upsetting i) the required 7.1) type of document (see Requirements martensitic steels which are primarily used for intake valves and the stem portion of exhaust valves; austenitic alloys, exhaust valves which are primarily used Manufacturing process 6.1.1 Unless otherwise agreed in the order, the type of melting process (see 6.1.2) and the type of process used in making the product are left to the discretion of the manufacturer for 6.2 Heat-treatment condition finish at the time of delivery Valve materials intended shall a) the quantity to be delivered; b) the designation see 1.1); state in his enquiry of the product form and order (e.g “bar”, the number of the product standard, the dimensions and, where these are not specified in the standard, the surface finish (see 6.2, note 3) and the tolerances (see 6.6); for subsequent When they have become are used, depending in the quenched finished condition peeled and polished; - peeled and ground; - ground; - ground and polished; - peeled and ground, - as rolled components, the the compoor the (see tables A.1 and A.5) are mainly supplied surface finishes: - of on their chemical and tempered then polished; Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS processing by metal forming are normally ordered in one heat-treatment conditions indicated in table 3 Valve materials one of the following The purchaser surface finish of shall be agreed NOTES materials Ordering and surface The heat-treatment condition and the products at the time of delivery when ordering sition, precipitation-hardened c) on 6.1.2 The non-ferrous metal alloys NiCr 15 Fe TiAI, NiFe 25 Cr 20 NbTi and NiCr 20 TiAl are usually produced by remelting processes 4.2 1); all other necessary details including method of processing (hot extrusion with electric resistance heating); 6.1 The materials classified according (see table 1) - (see table loading, 4.1 - grade h) cycling, Valve materials are therefore used ture of intake and exhaust valves internal combustion engines Grade material”; of this part of IS0 683; g) the heat-treatment 6.2); the alloy “valve Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT in bar form, with `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - IS0 IS0 683-15:1992(E) 6.3 Chemical 6.6 composition 6.3.1 The chemical composition of the materials, as given by the cast analysis, shall conform to the specifications in table 6.3.2 Slight deviations from the specified limits may be permitted by the purchaser, if the characteristics in use are only affected to a negligible extent 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 International Standards or otherwise on suitable national Standards NOTE The following International Standards cover dimensions and/or tolerances for products included in this part of IS0 683: 6.3.3 At the time of ordering, it may be agreed that the result of the product analysis, with the permissible deviations given in table 2, shall serve as proof that the limiting values for the cast analysis in table have been complied with - for as-rolled bars: IS0 1035-l and IS0 10354 - for as-rolled wire rod: IS0 8457-l 6.4 Mechanical properties Table3 specifies values of the mechanical properties at room temperature for the soft annealed and quenched and tempered conditions of martensitic and/or steels and for the controlled cooled quenched conditions of austenitic materials (see also tables A.1 to A.4) 6.5 Internal and external 6.5.1 Any limitations valve materials shall enquiry and order condition on non-metallic be agreed upon inclusions for at the time of NOTE In connection with agreements of the type deset-ibed in this subclause, it should be borne in mind that, in the case of open melting, the percentage of nonmetallic inclusions will be high because of the high alloy contents of the materials complying with this part of IS0 683 and also that an irregular distribution of the nonmetallic inclusions is to be expected Testing 7.1 6.5.3 The NiCr 20 TiAl alloy shall have a grain size of and/or finer when tested in accordance with IS0 643, but occasional coarser grains shall be tolerated 6.5.4 In the case of bars which were peeled or ground during finishing (see 6.2, note 3) the depth of surface defects shall not exceed the tolerance class hll of IS0 286-I For round bars and wire rods to be delivered in the hot-rolled surface condition, these requirements should where appropriate be based on IS0 9443 tests and documents 7.1.2 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 steel type supplied 7.1.3 If, in accordance with the agreements at the time of enquiry and order, an inspection certificate or an inspection report is to be provided the specifications in 7.2 to 7.5 are to be observed 7.2 Number of tests Mechanical tests 7.2.1.1 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, 7.2.1.2 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 7.2.1.1 As far as possible, the hardness shall be determined, otherwise the tensile test shall be carried out 7.2.2 6.5.5 In all other cases, the requirements governing surface quality shall be agreed upon at the time of enquiry and order between 7.1.1 For each delivery, the issue of one of the documents listed in 7.6 may be agreed upon at the time of enquiry and order 7.2.1 6.5.2 The valve materials shall not have internal bursts, open centreline, or any other kind of internal void apparent on a polished cross-section at 100 x magnification Agreement Other tests Where in addition to the tests in 7.2.1, other tests are to be carried 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 `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) 7.3.1 and preparation of samples and If the spectrographic analysis method is used, testing may be carried out on the surface of the product However, in cases of doubt, it will be necessary to carry out several analyses evenly distributed over the cross-section of the product and to average their results Tensile and hardness tests The test pieces for the tensile test shall be 7.3.2.1 taken in the longitudinal direction of the products (in accordance with figurel) and be prepared in accordance with IS0 377-l and IS0 6892 7.3.2.2 The hardness test shall be made in the cross-sectional area from which the tensile test pieces are to be taken, in accordance with figure The test pieces for the hardness test shall be prepared in accordance with IS0 6506 or IS0 6508 7.3.3 Grain size The instructions given in IS0 643 shall apply to the sampling and preparation of test pieces for determining the austenitic grain size 7.3.4 Surface testing In accordance with IS0 9443, in cases of dispute, transverse microsections shall be prepared for the microscopic examination of the surface quality (see also 7.4.5) 7.4 7.4.1 shall be determined in ac- Unless otherwise agreed, the choice between the various methods specified in IS0 643 is left to the discretion of the manufacturer 7.4.5 Surface defects In cases of dispute, the depth of surface defects shall, in accordance with IS0 9443, be determined by metallography on a transverse microsection If this is not possible, the defective spot shall be filed until the defect disappears, in order to determine the depth of the defect by suitable means 7.5 Retests IS0 404 shall apply 7.6 Certification IS0 10474 is valid, for retests of the tests acceptable - a test - an inspection certificate, - an inspection repot-t documents being: report, or Marking 8.1 Each coil of wire or bundle identified by means of a securely turing - the manufacturer’s - the grade - the cast number, - the nominal mark of bars shall be affixed label, fea- or name, of material, Chemical analysis Tensile test The tensile test with IS0 6892 7.4.3 grain size IS0 643 Test methods The chemical composition shall be determined in accordance with the appropriate International Standards listed in ISO/TR 9769 or prepared since the publication of ISO/TR 9769 7.4.2 Grain size The austenitic cordance with Product analysis For product analysis, the selection and preparation of samples shall be carried out in accordance with the requirements of IS0 377-2 7.3.2 7.4.4 shall be performed in accordance Hardness test The Rockwell C hardness test shall be performed in accordance with IS0 6508, the Brine11 hardness test shall be performed in accordance with IS0 6506 Marking indicates upon size which identifies the surface finish and/or the coil or bundle weight may be agreed 8.2 The marking legible even after coil or bundle on the label shall remain prolonged outdoor exposure 8.3 In the case of bars with diameters not smaller than 30 mm or with a cross-section of equivalent area, the manufacturer shall also ensure that one bar per bundle is marked as a guide bar This requires painting its front end white and affixing the manufacturer’s mark, the material grade and the Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS clearly of the Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Selection 7.3 test pieces IS0 683-15:1992(E) cast number on the front end, either (die-stamping), or by printing (rubber by means of adhesive tape by engraving stamping), or giving information about terial grade and the cast In the case cross-sections of diameters smaller of equivalent area, than 30 mm, or a second label the manufacturer, the manumber shall be provided Complaints The conditions for dealing in ISC 404 shall apply with complaints Dimensions Figure - Location of tensile test pieces `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT specified in millimetres IS0 683-l 5:1992(E) Table - Types of valve materials and specified chemical composition (applicable to cast analysis) Chemical 20X s!!?= Material designation g.5 E z Si C Mn gX 622 P S “GIX max Martensitic X 45 CtSi X 85 50 CrMoV CrSi I8 -L-L 0.40to 0.45 0.80 0.50 to I -L 0.55 0.90 X 55 CrMnNiN 20 X 53 CrMnNiN 21 8.9 X 50 CrMnNiNbN X 53 CrMnNiNbN Cr MO Ni Others 2.7103.3 mm 0.80 0,040 0,030 max max 0.60 1.5 , 0,040 0,030 t 0,030 8,Oto I 10,O 18.5to 7.5109.5 18.5 , 2,0to2,5 , zi % o,30too,60” materials 0,50 to 0.60 max 0.25 7.010 10.0 0,050 0,030 19.5to21.5 1,5102,75 0.2OtoO.40 to 0.58 max 0,25 8.0 to 10.0 0,050 0,030 20,010 22.0 3.25104.5 0.35 to 0.50 N max 0,45 a,0 to 10.0 0.050 0,030 20.0 to 22.0 3,5to5.5 0,80 to 1,50 W 0.48toO.58 219 (m/m)] 0.48 0,45100.55 219 [% steels mm I.0102,0 1.0 Austenitic - composition mm 0.45 8.0 to 10.0 0,050 0,030 20.0 3.25t04.5 to 22.0 N 1.8Olo2.50 Nb+Ta 0,4OtoO,60 N 0,38toO,50 N C + N > 0.80 2.OOto3.00 X 33 CrNiMnN 0.28toO.38 23 0,5oto 1,OO 1.5103.5 0,050 0.030 22.0 to 24.0 max 0.50 max 7.oto9.0 Nb+Ta 0,50 W 0,25toO.35 NiCr 0,03100,10 15 Fe TiAl Inax 0,50 max 0.50 0,015 0.015 14,010 17,o l”3X 0.50 N I.10t01.35 Remainder Al 5.Oto9.0 0.70to Fe 1,20 2.0t02.6 NiFe 25 Cr “lax 20 NbTi 0,lO rnax t o mm 1.0 0,030 0,015 18,Oto21,0 Remainder 0.30 to I OO Al 23.0 to 28.0 l.Oto2.0 20 TiAl 11 0.04t00.10 “Iax 1.0 “lax 1,o 0,020 0.015 18.0to21,O 65 `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT Ti max 0,008 max 3.0 Fe max 0.2 cu max 2.0 Co max 0.008 1,Oto 1.8 Al 1.8102.7 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Fe Nb+Ta l.Oto2.0 NiCr Nb+Ta TI B B li IS0 683-l 5:1992(E) Table - Product analysis Cast analysis Element Permissible (specified deviations from the specified cast analysis (see table 1) Permissible limits) Yo (m;m) 0,20 0,60 C deviationsl) 2) from the specified composition % (m/m) < 0,20 < 0,60 < 0.90 + 0,Ol + 0,02 * 0.03 - _ Si > 1.0 .- - 1.0 > 2,0 Mn - < 1,o < 3,3 * 0,05 + 0,lO - _ < 1,o < 2,0 d 10,o * 0,03 * 0,04 + 0,06 < 0,040 d 0,050 t- 0,005 + 0,010 < 0.030 + - _ - P > 0,040 -S N ~~_-_ 7,5 > 10,o > 15,o > 20,o Cr < 0,60 0,005 - _~ $- 0,02 G < < < * * + + 10,o 15,o 20,o 24,0 ~ < 1,75 MO z 1,75 - 3T OS05 rt: 0.10 < 2,5 ~- _ < 5,0 < 9,0 * 0.07 + 0.10 1,8 - < 3,o + 0,05 Ni 5.0 Nb (+ Ta) _ ._-. -.-V W _-0,lO 0,15 0,20 0,25 _ 0,30 - d 0,60 < 1.50 1) The permissible deviations for the NiCr 20 TiAI, at the time of ordering, if required . -. _ f 0,03 + o,05 -. -_ NiFe 25 Cr 20 NbTi and NiCr 15 Fe TiAl alloys shall be agreed the upper value `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - 2) ‘I&-” means that in one cast, and in more than one product analysis, the deviation may occur over or under the lower value of the specified range in table 1, but not both at the same time upon Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) Table Material - Mechanical properties at room temperature Heat-treatment designation condition Martensitic Quenched X 85 CrMoV 18 2-.-Ipp and tempered Soft annealed in the heat-treatment on delivery condition Hardness’) HB on delivery Tensile strength’) N/mm221 steels (TQ +- T) (TA) Austenitic materials X 55 CrMnNiN 20 X 53 CrMnNiN 21 X 50 CrMnNiNbN X 33 CrNiMnN 21 23 NiCr 15 Fe TiAl I NiFe Quenched at 930 “C to 030 “C Quenched at 930 “C to 030 ‘C NiCr 20 TiAl materials, the tensile strength values I I 1) In the case of austenitic 2) N/mm* 3) This heat-treatment condition is suitable for processing by hot extrusion 4) This heat-treatment condition is suitable for processing by upsetting max 295 I max 325 shall be decisive in cases I max 000 max 100 of dispute = MPa with electric resistance heating `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - I 25 Cr 20 NbTi Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) Annex A (informative) Technical A.3 General Property values contained in the main text of this part of IS0 683 are requirements of delivery Properly values indicated in this annex are not requirements of delivery (with the exception indicated in tableA.l, footnote 3) because they are the result of processing after delivery The data in this annex are provided only as a guide to the relative performance of the different materials covered in this part of IS0 683 They are not intended for use in the purchase, design development, manufacture or usage of any item Users must assure themselves of the properties actually obtained in practice A.2 Mechanical properties A.2.1 For the reference heat-treatment condition (see table A.5) reference values for mechanical properties at room temperature are given in table A.I A.2.2 For the reference heat-treatment condition (see table A.5), reference values for tensile strength and 0,2 %-proof stress at elevated temperatures are given in tables A.2 and A.3 respectively A.2.3 Reference 000 h are given NOTE An values for the creep in table A.4 International Standard strength on creep after A.2.4 If the mechanical properties covered in tables A.1 to A.3 are to be checked, then the relevant reference heat treatment indicated in tableA should be carried out before the mechanical properties are tested In addition, for tests at room 7.4.3 shall peratures, applied the specifications of 7.3.2, properties Table A.6 contains reference values physical properties of the materials this part of IS0 683 A.4 Subsequent treatment A.4.1 Shaping processing and heat and heat treatment All the materials listed in this part of IS0 683 are suitable for hot forming As a general rule, hot forming becomes more difficult as the alloy content increases, because of the reduced capacity for flow Consequently, abrupt reductions in cross-section during any single forging pass should be avoided When establishing parameters for heating prior to forging, the low thermal conductivity of austenitic alloys should be borne in mind Any temperature gradients in valve alloys can cause tremendous internal stresses during forging and working, which result in internal ruptures and surface cracks Guideline treatment temperatures for hot are given in tableA.5 7.4.2 A.4.2 forming and heat Machining Machining is possible but difficult in the case of austenitic materials, due to their high strength, toughness and strain hardening characteristics To prevent cracks from occurring during grinding operations, appropriate grinding conditions should be chosen and be applied For tests at elevated temthose of figure and IS0 783 should be Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS relating to the complying with rupture testing of metallic materials is in preparation and should be applied as soon as it is available, because the results of creep tests are very dependent on differences in the testing conditions temperature Physical `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - A.1 supplement Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) Table Material A.1 - Reference values for the mechanical properties at room temperature 40 mm) (applicable to the reference heat-treatment condition in accordance Reference heat treatment condition’) designation 0,2 %proof stress 2) Hardness (for diameters with tableA.5) Tensile strength Elongation after fracture (I, = Do) 2) 900to1 150 950 to 200 950to 150 950to 150 850 to 100 100 to 300 900to1 100 100to 1400 8 12 20 12 25 15 up to Reduction in area after fracture*) X 50 CrSi X 45 CrSi X 85 CrMoV 18 - _Austenitic ST+P ST-t P ST+P STtP ST+P ST+- P ST+P ST+P CrMnNiN 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNiNbN 21 CrNiMnN 23 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - X 55 X 53 X 50 X 53 X 33 NiCr NiFe NiCr 1) TO = quenched; 2) The values given 3) N/mm* 4) Also possible ~._ .~_ - T = tempered; 285) 305) 305) 305) 255) 32 28 32 - ST = here are situated solution near materials 550 580 580 580 550 750 500 725 treated; the lower P = precipitation limit of the scatter 10 IO 15 IO 30 20 30 25 hardened range = MPa as delivery condition, in which case the values shall apply as true requirements 5) Austenitic grades X 55 CrMnNiN 20 to X 33 CrNiMnN 23 may show hardness values which cannot be converted into tensile strength values according to the standard tables commonly used in laboratories Therefore, in cases of dispute only the tensile strength value shall be considered as valid Table A.2 - Reference values for the tensile strength at elevated Tensile Material designation Reference heat treatment condition’) 500 “C 550 “C Martensitic Austenitic X 55 X 53 X 50 X 53 X 33 NiCr NiFe NiCr ST+P ST+P ST+P ST+P ST+P ST+P ST+P ST+P CrMnNiN 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNiNbN 21 CrNiMnN 23 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl 1) TQ = quenched: 2) The values 3) N/mm* given T = tempered; ST = here are situated 640 650 680 680 600 000 800 050 solution treated; near the lower temperatures strength*), at 650 “C 700 “C N/mm* 3) 600 “C 800 “C steels materials 590 600 650 650 570 980 800 030 P = 540 550 610 600 530 930 790 000 precipitation limit of the scatter 490 500 550 510 470 850 740 930 440 450 480 450 400 770 640 820 hardened range = MPa 10 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS 750 “C Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT 360 370 410 380 340 650 500 680 290 300 340 320 280 510 340 500 IS0 Table A.3 - Reference values for the 0,2 %-proof stress at elevated 0,2 %-proof Material Reference heat treatment condition’) designation 500 “C 550 “C Martensitic TQ+T TQ+T TO-t-T -I 400 400 500 1) TQ = quenched; 2) The values 3) - N/mm2 = MPa ST+P ST+P ST+P ST+-P ST+P ST+-P ST+P ST+P T = tempered; given here Reference 650 “C 700 “C N/mm2 3) 220 240 280 110 120 170 75 80 120 80 250 300 310 310 220 690 450 650 230 270 285 280 210 660 450 600 220 250 260 260 190 650 430 600 200 230 240 235 180 560 380 500 ST = are situated near precipitation hardened materials 300 350 350 340 270 725 450 700 solution 280 330 330 320 250 710 450 650 treated; the lower P = limit of the scatter designation I 500 “C strength’) 650 “C after I N/mm2 Martensitic X 50 CrSi X 45 CrSi X 85 CrMoV 18 -~ - III CrMnNiN 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNiNbN 21 CrNiMnN 23 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl 1) Mean 2) N/mm* values of scatter 000 h, at 725 “C I 800 “C 2) : 160 200 220 215 235 475 400 500 - determined in y materials - range condition steels - _ X 55 X’53 X 50 X 53 X 33 NiCr NiFe NiCr to the reference -p -Fl-1 Austenitic 170 200 220 220 170 425 250 450 range values for the creep strength after 000 h (applicable accordance with table A-5) Creep Material 800 “C at - CrMnNiN 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNiNbN 21 CrNiMnN 23 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl A.4 - 750 “C temperatures stress*), steels 300 300 370 Austenitic Table 5:1992(E) - x 50 CrSi X 45 CrSi X 85 CrMoV 18 X 55 X 53 X 50 X 53 X 33 NiCr NiFe NiCr t 600 “C 683-l 85 110 120 115 130 260 180 290 _ 45 50 55 50 60 125 60 150 until now = MPa `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - 11 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT IS0 683-l 5:1992(E) Table Material designation A.5 - Reference data for hot forming Hot forming Soft annealing “C “C and heat treatment Quenching or solution heat treatment T Quenching agent Tempering or artificial ageing “C Martensitic steels X 50 CrSl X 45 CrSt x a5 CrMoV 18 700 to 820 I Air or water 720 to 820 / Air or water 780 to 820 / Air or water 820 to 860 / Retarded cooling 720 to 820 I Air or water 720 to 820 / Air L Austenitic malerials _ X 55 CrMnNiN X 53 X 50 X 53 X 33 NiCr NiFe NiCr Table 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNlNbN 21 CrNiMnN 23 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl A.6 - 140 to 140 to 160to 160to 150to loot0 i 000 to I 000 to 150 to 1050 Reference Material designation I 1 1 1100to950 1150t0950 1150to950 150 to 980 i 150 to 980 150to 940 150 to 050 data relating Density at 20 "C to physical Modulus of elasticity at I ia0 I ia0 1 1 Water Water Water Water Water Air Air or water Air or water 200 200 170 150 I 080 I 090 properties (applicable with table AS) to the reference Thermal expansion coefficient between 20 “C and 20 "C 760 to 815 I4 760 to 815 I4 h to h Air 760 to 850 I6 h Air a00 to a30 a h Air 840 I24 h + 700 I2 h Air 690 to 710 / 16 h Air 690 to 710 I16 h Air condition kN/mm2 l) 10 6.K ’ in accordance Specific heat capacity at Thermal conductivity at 20 “C Magnetizability 20 "C 1oo"cl3oo"cl5oo"cl7oo"c kg/dm3 h to h Air 760 to 815 I4 h to a h Air J/kg’K w/O-W Martensitic steels X 50 CrSi a X 45 CrSi 7>7 7,7 210 210 x a5 CrMoV ia - 797 210 73 78 7,a 78 78 83 61 83 205 205 205 205 205 215 215 215 X 55 X 53 X 50 X 53 X 33 NiCr NiFe NiCr 1) CrMnNlN 20 CrMnNiN 21 CrMnNiNbN 21 CrMnNiNbN 21 CrNiMnN 23 a 15 Fe TiAl 25 Cr 20 NbTi 20 TiAl Nlrnm*=l 2) Austenitic ing IO,9 10,9 II,5 II,5 II,2 II,2 - IO,9 II,5 II,:! Austenilic materials 15,5 15.5 15.5 15,5 16,5 13.0 14,l II,9 17,5 17,5 17.5 17.5 17,l 14.0 15,5 13.1 ia,5 ia,5 qa,5 Aa, ii.8 ii,8 11~8 ~ _ I a,a Aa-8 I a,8 ia,a 17,3 17,4 14,5 15,9 13,7 15.5 16.8 14.5 500 500 500 21 21 21 Existent Extstent Existent I - 14,5 14,5 14,5 14.5 14,5 - 13 13 13 500 500 500 500 500 460 460 460 Non-existent*) Non-exister@1 Non-existent*) Non-existed Non-existent21 Non-existent Non-existent Non-existent MPa SteetS may be slightly magnetizable in the aged condition Their magnetizability may increase `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - 12 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT with extended cold form IS0 683-15:1992(E) `,,,,,``,````,`,`,,``,,,,,,```-`-`,,`,,`,`,,` - UDC [669.14/.15].018.2:621.43-33 Descript&s: classification, marking steels, heat treatable steels, alloy steels, free machining steels, internal combustion engines, engine valves, specifications, mechanical properhes, chemical composition, tests, mechanical tests, chemical analysis, designation, Price based on 12 pages Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ~ _ - Licensee=Bogazici University/5964815002, User=ahmadi, rozita Not for Resale, 05/25/2015 04:55:57 MDT _ -