INTERNATIONAL STANDARD ISO 683-1 Third edition 2016-07-01 Heat-treatable steels, alloy steels and free-cutting steels — Part 1: Non-alloy steels for quenching and tempering· Aciers pour traitement thermique, aciers alliés et aciers pour décolletage — Partie : Aciers non alliés pour trempe et revenu Reference number ISO 683-1:2016(E) © ISO 2016 ISO 683-1:2016(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2016, Published in Switzerland All rights reserved Unless otherwise specified, no part o f this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country o f the requester ISO copyright o ffice Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2016 – All rights reserved ISO 683-1:2016(E) Page Contents Foreword v Scope Normative references Terms and definitions Classification and designation 4.2 Designation C las s ificatio n Information to be supplied by the purchaser 5.3 Ordering example Manufacturing process 6.1 General 6.2 Deoxidation f 6.3.2 Particular heat-treatment condition 6.3.3 Particular surface conditions f Requirements 7.1.1 General 7.1.2 Chemical composition 7.1.3 Mechanical properties 7.1.5 Surface hardness 7.4 Grain size 7.5 Non-metallic inclusions 7.5.1 Microscopic inclusions 7.5.2 Macroscopic inclusions 7.6 Internal soundness f 7.8 Decarburization 7.9 Shape, dimensions and tolerances Inspection f f f 8.3.2 Visual and dimensional inspection Test methods 9.2 Mechanical tests 9.2.1 Tensile test 9.2.2 Impact test 9.3.1 Hardness in treatment conditions +A and +S f 9.3.3 Surface hardness M andato ry in fo rmatio n O p tio ns and/o r s up p lementary o r s p ecial requirements 6.3 H eat- treatment co nditio n and s ur ace co nditio n at delivery 6.3 6.4 Traceab ility o 7.1 C hemical co mp o s itio n, mechanical p ro p erties and hardenab ility 7.1 the cas t H ardenab ility 7.2 M achinab ility 7.3 C o ld s hearab ility 7.7 S ur ace quality 8.1 Tes ting p ro cedures and typ es o 8.2 Frequency o 8.3 S p ecific ins p ectio n and tes ting 8.3 N o rmal co nditio n at delivery cuments tes ting Verificatio n o the hardenab ility, hardnes s and mechanical p ro p erties 9.1 C hemical analys is 9.3 H ardnes s and hardenab ility tes ts 9.3 Verificatio n o © ISO 2016 – All rights reserved hardenab ility iii ISO 683-1:2016(E) 9.4 10 Retests 10 Marking 10 (normative) Ruling sections for mechanical properties 30 Annex B (normative) Supplementary or special requirements 34 Annex C (informative) Designation of steels given in this part of ISO 683 and of comparable Annex A grades covered in various designation systems 36 (informative) Annex D Dimensional standards applicable to products complying with this part of ISO 683 38 Bibliography 39 iv © ISO 2016 – All rights reserved ISO 683-1:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f preparing International Standards is normally carried out through ISO 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 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso.org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents) Any trade name used in this document is in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the meaning o f ISO specific terms and expressions related to formity assessment, as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html The committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 4, Heat treatable and alloy steels This third edition cancels and replaces the second edition (ISO 683-1:2012), of which it constitutes a minor revision ISO 683 consists of the following parts, under the general title Heat-treatable steels, alloy steels and freecutting steels: — Part 1: Non-alloy steels for quenching and tempering — Part 2: Alloy steels for quenching and tempering — Part 3: Case-hardening steels — Part 4: Free-cutting steels — Part 5: Nitriding steels — Part 14: Hot-rolled steels for quenched and tempered springs — Part 15: Valve steels for internal combustion engines — Part 17: Ball and roller bearing steels — Part 18: Bright steel products © ISO 2016 – All rights reserved v INTERNATIONAL STANDARD ISO 683-1:2016(E) Heat-treatable steels, alloy steels and free-cutting steels — Part 1: Non-alloy steels for quenching and tempering· Scope T h i s p a r t o f I S O s p e ci fie s the te ch n ic a l del iver y re qu i rements — s em i-fi ni s he d pro duc ts , ho t forme d, for e g blo om s , bi l le ts , s lab s (s e e No te 1) , — bars (see Note 1), — wire rod, — fi n i she d fl at pro duc ts , a nd — hammer or drop forgings (see Note 1) manu fac tu re d from the d i re c t harden i ng non-a l loy s te el s a nd the non- a l loy fla me - and i nduc tion- hardening steels listed in Table and supplied in one of the heat-treatment conditions given for the ff f Table and in one of the surface conditions given in Table The steels are, in general, intended for the manufacture of quenched and tempered or austempered (see 3.2 Tables and 11), but can also Table 10) The requirements for mechanical properties given in this part of ISO 683 are restricted to the sizes given in Tables and 10 di erent typ e s o pro duc ts i n and No te ) a nd fla me - or i nduc tion-h ardene d mach i ne p ar ts (s e e b e p ar tly u s e d i n the norma l i z e d cond ition (s e e NO TE H a m mer- forge d s em i-fi n i s he d h a m mer- forge d b a rs a re , i n the “hammer and drop forgings” fol lowi ng , pro duc ts ( b lo om s , bi l le ts , s l ab s , e tc ) , s e a m le s s ro l le d r i ngs a nd co vere d u nder s em i-fi n i s he d pro duc ts or b a rs a nd no t u nder the ter m NO TE Fo r the p u r p o s e s o f s i mp l i fic atio n , the ter m “quenche d a nd temp ere d” i s , u n le s s o ther wi s e i nd ic ate d , NO TE Fo r I nter n atio n a l S ta nd a rd s used in the following also for the austempered condition rel ati n g to s te el s compl yi ng with the re qu i rements fo r the chem ic a l composition in Table 3, however, supplied in other product forms or treatment conditions than given above or i ntende d NO TE fo r s p e c i a l ap p l ic atio n s , a nd fo r o ther rel ate d I ntern ation a l S ta nda rd s , s e e the B ib l io grap hy T h i s p a r t o f I S O e s no t app l y to b r ight p ro duc ts a nd b a rs a nd wi re ro d such products, see ISO 683-18 and ISO 4954 for cold he ad i ng For I n s p e c i a l c a s e s , va ri ation s i n the s e te ch n ic a l del iver y re qui rements or add ition s to them c an form the s ubj e c t o f a n agre ement b e twe en the ma nu fac tu rer and pu rcha s er at the ti me o f enqu i r y a nd order (see 5.2 and Annex B) I n add ition to th i s p ar t o f I S O , the genera l te ch n ic a l del iver y re qu i rements o f I S O 4 are appl ic able © ISO 2016 – All rights reserved ISO 683-1:2016(E) T he Normative references fol lowi ng i nd i s p en s able c u ments , i n whole or i n p a r t, are normatively re ference d i n th i s c ument a nd a re for its appl ic ation For date d re ference s , on ly the e d ition c ite d appl ie s For u ndate d re ference s , the late s t e d ition o f the re ference d c u ment (i nclud i ng any a mend ments) appl ie s ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method ISO 377, Steel and steel products — Location and preparation ofsamples and test pieces for mechanical testing ISO 404:2013, Steel and steel products — General technical delivery requirements ISO 642, Steel — Hardenability test by end quenching (Jominy test) ISO 643, Steels — Micrographic determination of the apparent grain size ISO 3887, Steels — Determination of depth of decarburization ISO 4885:—1) , Ferrous products — Heat treatments — Vocabulary ISO 4948-1:1982, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics ISO/TS 4949, Steel names based on letter symbols ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using standard diagrams ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 6892-1, Metallic materials — Tensile testing - Part 1: Method of test at room temperature ISO 6929, Steel products — Vocabulary ISO 7788, Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements ISO 9443, Heat-treatable and alloy steels — Surface quality classes for hot-rolled round bars and wire rods — Technical delivery conditions ISO 10474, Steel and steel products — Inspection documents ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition ISO 18265, Metallic materials — Conversion of hardness values 1) Under preparation Stage at the time of publication: ISO/DIS 4885:2016 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Terms and definitions For the purposes o f this document, the terms and definitions given in ISO 377, ISO 4885, ISO 4948-1, ISO 4948-2, ISO 6929, and ISO 14284 and the following apply NOTE For deviations from these terms and definitions, see Notes and o f Clause 3.1 ruling section section for which the specified mechanical properties apply Note to entry: Independent o f the actual shape and dimensions o f the cross-section o f the product, the size o f its ruling section is always given by a diameter This corresponds to the diameter o f an “equivalent round bar” That is a round bar which will show the same cooling rate as the actual ruling section of the product concerned at its position for taking the test pieces, when being cooled from austenitizing temperature 3.2 austempering isothermal heat treatment for producing bainitic or ausferritic structure of a work piece Note to entry: The final cooling to ambient temperature is not at a specific rate [SOURCE: ISO 4885:—2) , 3.11] 3.3 non-alloy steel as defined in ISO 4948-1:1982, 3.1.2 Classification and designation 4.1 Classification The classification o f the relevant steel grades is according to ISO 4948-1 and ISO 4948-2 Steel grades C25, C35, C40, C45, C50, C55 and C60 are non-alloy quality steels All other steel grades covered by this part o f ISO 683 are non-alloy special steels 4.2 Designation For the steel grades covered by this part o f ISO 683, the steel names, as given in the relevant tables, are allocated in accordance with ISO/TS 4949 5.1 Information to be supplied by the purchaser Mandatory information The manu facturer shall obtain the following in formation from the purchaser at the time o f enquiry and order: a) quantity to be delivered; b) designation o f the product form (slab, bloom, billet, round bar, wire rod, wide flat, sheet, plate, strip, forging, etc.) c) either the designation of the dimensional standard and the dimensions and tolerances selected from this (see 7.9) or, for example in the case of drop forgings, the designation of the drawing or any other document covering the dimensions and tolerances required for the product; 2) Under preparation Stage at the time of publication: ISO/DIS 4885:2016 © ISO 2016 – All rights reserved ISO 683-1:2016(E) d) re ference to this part o f ISO 683, i.e ISO 683-1; e) designation of the steel grade, as given in Table ; f ) standard designation for a test report 2.2 or, i f required, any other type o f inspection document in accordance with ISO 10474 or another standard (e.g regional standards EN 10204 or JIS G 0415) 5.2 Options and/or supplementary or special requirements Several options are specified in this part o f ISO 683 and listed below I f the purchaser does not indicate any o f these options, the products will be supplied in accordance with the basic specifications defined in this part of ISO 683 (see 5.1): a) i f a heat-treatment condition other than the untreated condition is required, the symbol for this other condition (see Table , column 2); b) i f another sur face condition than “hot worked” or a special sur face quality is required, the sur face condition (see Table ) and the surface quality (see 7.7 ); c) any requirement for the hardenability (+H, +HH, +HL) for special steels (see 7.1.4 and Tables to ); d) any supplementary requirement that shall be complied with, the symbol and, where necessary, the details o f this supplementary requirement (see Annex B ); e) any requirement for the verification o f non-metallic inclusion content (see 7.5 ); f ) verification o f hardenability and, i f agreed, the in formation about calculation o f the hardenability (see 9.3.2 ); g) any requirement regarding the permissible depth o f decarburization (see 7.8 ); h) suitability o f bars and rod for bright drawing (see 7.7.4); i) j) 5.3 any requirement relating to the removal o f sur face de fects (see 7.7.5 ); hardness testing instead o f tensile testing for normalized finished flat products in thicknesses >10 mm for plates or >100 mm for bars (see 7.1.3) (in this case, hardness limits should be agreed) Ordering example EXAMPLE Fi fty hot-rolled round bars according to ISO 1035-1 with a nominal diameter o f 40 mm and a nominal length of 000 mm, with diameter tolerance according to class S and with length tolerance according to class L2 of ISO 1035-4 made of steel grade ISO 683-1, C45E (see Table 3) in the heat treatment condition +N (see Table 1), surface blast cleaned (+BC) (see Table ), product analysis/option B.5 with an inspection certificate 3.1 according to ISO 10474: 50 round bars ISO 1035 – 40,0S × 000L2 ISO 683-1 – C45E+N+BC option B.5 ISO 10474 – 3.1 Manufacturing process 6.1 General The manu facturing process o f the steel and o f the products is with the restrictions given by the requirements in 6.2 to 6.4 left to the discretion of the manufacturer © ISO 2016 – All rights reserved ISO 683-1:2016(E) Key X Y g) h) i) j) distance from quenched end of test piece, mm hardness, HRC upper limit upper limit, +HL grades lower limit, +HH grades lower limit Figure — Scatter bands for the Rockwell C hardness in the end quench hardenability test 26 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Dimensions in millimetres Key A B C a b c sample rough specimen test piece tensile test piece notched bar impact test piece round and similar shaped sections rectangular and square sections For small products (d or w f f f For round bars, the longitudinal axis of the notch shall be about parallel to the direction of a diameter For rectangular bars, the longitudinal axis of the notch shall be perpendicular to the wider rolling surface ≤ mm) , the tes t p iece s hall, i p o s s ib le, co ns is t o an un- machined p art o the b ar Figure — Location of the test pieces in bars, seamless rolled rings and rods © ISO 2016 – All rights reserved 27 ISO 683-1:2016(E) Dimensions in millimetres Key principal direction of rolling a I n the cas e o f s teel grades in the quenched and temp ered co nditio n with requirements the width o f the s amp le s hall b e s u fficient NO TE fo r lo ngitudinal I n the c a s e o f d i ffic u lty ta ki n g the te s t pie ce centre of it is getting as close as possible to w/4 fo r the imp act energy, Figure w/4, take the sample from the position, where the imp act tes t p ieces to b e taken as s p ecified in fro m Figure — Location o f the samples (A and B) in flat products in relation to the product width 28 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Product Location of the test piece a for thickness a product width of Type of test mm w < 600 mm w longitudinal transverse longitudinal longitudinal Distance of the test piece from the rolled surface mm ≥ 60 mm ≤30 Tensile testb, e >30 Impact testc a b c d e >12 d Location of the longitudinal axis of the test piece with respect to the principal rolling direction T he te s t p ie ce s h a l l co mp l y with I S O -1 The longitudinal axis of the notch shall be perpendicular to the rolled surface I f ag re e d at the ti me o f o rder i n g , the te s t p ie ce from 1/4 product thickness If me ch a n ic a l p ro p er tie s a re de ter m i ne d T he a xi s o f the te s t p ie ce s h a l l b e i n t/2 fo r in fro m the p ro duc ts wi th a th ickne s s e xce e d i n g de l i ve r y co nd i tio n + QT, ro u nd te s t m m m ay b e ta ken p ie ce s th ickne s s e s ≤ m m a nd , m m b elo w the s u r face fo r shall be ta ke n th ickne s s e s >2 m m Key rolled surface alternatives F i g u r e — L o c a t i o n o f © ISO 2016 – All rights reserved t h e t e s t p i e c e f r o m f l a t p r o d u c t s i n r e l a t i o n t o p r o d u c t t h i c k n e s s a n d principal direction of rolling 29 ISO 683-1:2016(E) Annex A (normative) Ruling sections for mechanical properties A D e f i n i t i o n See 3.1 A.2 Determination of the diameter of the equivalent ruling section A.2.1 If the test pieces are taken from products with simple cross-sections and from positions with A.2.1.1 to A.2.1.3 quas i two - dimens io nal heat flo w, s hall ap p ly A.2.1.1 For rounds, the nominal diameter of the product (not comprising the machining allowance) shall be taken as the diameter of the ruling section A.2.1.2 For hexagons and octagons, the nominal distance between two opposite sides of the crosssection shall be taken as the diameter of the ruling section A.2.1.3 For square and rectangular bars, the diameter of the ruling section shall be determined in accordance with the example shown in Figure A.1 30 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Dimensions in millimetres Key X width Y thickness diameter of the ruling cross-section EXAMPLE For a rectangular bar with a section of 40 mm × 60 mm, the diameter of the ruling section is 50 mm Figure A.1 — Diameter of the equivalent ruling section for square and rectangular sections for quenching in oil or water A.2.2 Fo r o ther p ro duct fo rms , the ruling s ectio n s hall b e agreed at the time o f enquiry and o rder NOTE For this purpose, the following procedure can serve as a guideline The product is hardened in accordance with usual practice It is then cut so that the hardness and structure at the position of the ruling s e c tion pro vide d fo r ta ki n g te s t pie ce s c a n b e de ter m i ne d From a no ther p ro duc t o f the typ e u nder co n s ideration a nd o f the s a me c a s t, a n end quench pie ce i s ta ken fro m the p re s c r ib e d p o s itio n a nd te s te d i n the u s u a l way T hen , the distance is determined at which the end quench test piece shows the same hardness and structure as the ruling section at the position provided for taking test pieces On the basis of this distance, the diameter of the ruling section is then estimated using Figure A.2 and Figure A.3 © ISO 2016 – All rights reserved 31 ISO 683-1:2016(E) Dimensions in millimetres Key X distance from the quenched end Y bar diameter surface three-quarter radius centre NOTE Source: Reference [14] Figure A.2 — Relationship between the cooling rates in end quench test pieces (Jominy test pieces) and in quenched round bars in mildly agitated water 32 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Dimensions in millimetres Key X distance from the quenched end Y bar diameter surface three-quarter radius centre NOTE Source: Reference [14] Figure A.3 — Relationship between the cooling rates in end quench test pieces (Jominy test pieces) and in quenched round bars in mildly agitated oil © ISO 2016 – All rights reserved 33 ISO 683-1:2016(E) Annex B (normative) Supplementary or special requirements I t i s i ntende d th at o ne o r mo re o f the NO TE fol lowi ng s upp lementa r y o r s p e c i a l re qu i rements b e app l ie d , b ut on l y where s p e c i fie d i n the enqu i r y a nd order I t i s i ntende d th at, where ne ce s s a r y, de ta i l s o f the s e re qu i rements b e agre e d up on b y the m a nu fac tu rer a nd p u rch a s er at the ti me o f enqu i r y a nd o rder B.1 Mechanical properties of reference test pieces in the quenched and tempered condition For deliveries in a condition other than quenched and tempered or normalized, the requirements for the mechanical prop er ties i n the quenched and temp ered condition shal l b e veri fied on a re ference tes t piece In the case of bars and rods, the sample to be quenched and tempered shall, unless otherwise agreed, have the cross-section of the product In all other cases, the dimensions and the manufacture of f consideration the indications for the determination of the ruling section given in Annex A The samples shall be quenched and tempered in accordance with the conditions given in the relevant table for f f treatment shall be given in the inspection document The test pieces shall, unless otherwise agreed, be taken in accordance with Figure for bars and rods and in accordance with Figures and f products the s ample s l l b e agre e d at the ti me o enqui r y and order, where appropriate, wh i le ta ki ng i nto the he at-tre atment cond ition s or as agre e d at the ti me o enqu i r y and order T he de tai l s o the he at or flat B.2 Mechanical properties of reference test pieces in the normalized condition For del iverie s o f non-a l loy s te el s i n a cond ition o ther than quenche d a nd temp ere d or norma l i z e d , the re qu i rements for the me ch an ic a l prop er tie s i n the norma l i z e d cond ition sh a l l b e veri fie d on a re ference test piece In the case of bars and rods, the sample to be normalized shall, unless otherwise agreed, have the crosssection of the product In all other cases, the dimensions and the preparation of the sample shall be agre e d at the ti me o f enqui r y and order The details of the heat treatment shall be given in the inspection document The test pieces shall, unless otherwise agreed, be taken in accordance with Figure in the case of bars and rods and with Figures and f i n the ca s e o flat pro duc ts B.3 Fine grain steel When te s te d i n accord ance with I S O 43 , the s te el s l l h ave a n au s tenite gra i n s i ze o f or fi ner I f s p e c i fic te s ti ng i s ordere d , it sh a l l a l s o b e agre e d whe ther th i s grai n s i z e re qu i rement i s to b e veri fie d by de term i ni ng the a lu m i n iu m content or m icro graph ic a l ly I n the fi rs t c as e, the a lu m i n ium content shall also be agreed In the second case, one test piece shall be inspected per cast for the determination of the austenitic gra i n s i z e S a mpl i ng and s ample prep a ration s l l b e a s s p e c i fie d i n I S O 43 Un le s s o ther wi s e agre e d at the ti me o f enqu i r y a nd order, the quenche d gra i n s i ze s l l b e de term i ne d Hardening shall be carried out under the following conditions for the purposes of determining the quenched grain size: — 34 for s te el s with a c arb on content l i m it < , % : (8 ±10) ° C , m i n/water; © ISO 2016 – All rights reserved ISO 683-1:2016(E) — for s te el s with a c a rb on content l i m it ≥ , % : (8 ±10) ° C , m i n/water I n ca s e s o f d i s pute, pre -tre atment at 1 ° C uniform starting condition for m i n/a i r sh a l l b e c a rrie d out i n order to pro duce a B.4 Non-destructive tests T he pro duc ts sh a l l b e non- de s truc tively te s te d u nder cond ition s and to an accep ta nce s tandard agre e d at the ti me o f enqu i r y and order B.5 Product analysis O ne pro duc t a na lys i s s l l b e c a rrie d out p er c as t are s p e c i fie d for T he cond ition s for the de term i nation o f a l l elements for wh ich va lue s the c a s t a na lys i s o f the s te el typ e concerne d for s ampl i ng sh a l l b e i n accorda nce with I S O 142 I n ca s e s o f d i s pute, the ana lys i s sha l l be carried out, if possible, in accordance with a reference method taken from one of the International Standards listed in ISO/TR 9769 B.6 Reduction ratio and deformation ratio If the central soundness of the hot-rolled or forged products is important, the purchaser shall be aware that a minimum reduction ratio (referred to the cross-section) for long products or a minimum th ickne s s de formation ratio (re ferre d to the th ickne s s) for fl at pro duc ts i s ne ce s s a r y I n th i s c a s e, a m i n i mu m re duc tion ratio or a m i n i mu m th ickne s s de formation ratio o f 4: may b e agre e d at the ti me o f enqu i r y and order B.7 Special agreements for marking T he pro duc ts sha l l b e marke d i n a way s p e c i a l ly agre e d at the ti me o f enqu i r y a nd order © ISO 2016 – All rights reserved 35 ISO 683-1:2016(E) Annex C (informative) Designation of steels given in this part of ISO 683 and of comparable grades covered in various designation systems Table C.1 — Designation of steels given in this part of ISO 683 and of comparable grades covered in various designation systems Steel designations according to a EN 10083-2:2006 c ISO name ISO number ASTM A 830/UNS b (ISO 683-1) (ISO 683-1) — i/n/wf — i/n/wf C25 C30 C35 C40 C45 C50 C55 C60 C25E C25R C30E C30R C35E C35R C40E C40R C45E C45R C50E C50R C55E C55R C60E — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 1025 — 1030 — 1035 — 1040 — 1045 — 1050 — 1055 — 1060 — — — — — — — — n — n — n — n — n — n — n — n Quality steels C25 C30 C35 C40 C45 C50 C55 C60 (1,0406) (1,0528) 1,0501 1,0511 1,0503 (1,0540) 1,0535 1,0601 Special steels C25E C25R C30E C30R C35E C35R C40E C40R C45E C45R C50E C50R C55E C55R C60E (1,1158) (1,1163) (1,1178) (1,1179) 1,1181 1,1180 1,1186 1,1189 1,1191 1,1201 1,1206 1,1241 1,1203 1,1209 1,1221 GB/Xxxxx/ JIS d 200x/ISC e — i/n/wf — i/n/wf i i n n n i n n — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — i i i i n n n n n n n n n n n S25C — S30C — S35C — S40C — S45C — S50C — S55C — S58C n — n — n — n — n — n — n — n — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — a See sources in the Bibliography b US steel listed in ASTM A 830 and in UNS (i f the steel number is given in brackets then the steel has only a UNS number) c European steel listed in EN 10083-2:2006 and in the “Stahl-Eisen-Liste” (if the steel number is given parentheses/brackets, the steel is only listed in the “Stahl-Eisen-Liste”) d Japanese Industrial Standard e Chinese National Standard f i = steel identical to ISO-steel grade; n = steel grade with closer match o f composition, but not identical; w = wider match 36 © ISO 2016 – All rights reserved ISO 683-1:2016(E) Table C.1 (continued) Steel designations according to a EN 10083-2:2006 c ISO name ISO number ASTM A 830/UNS b (ISO 683-1) (ISO 683-1) — i/n/wf — i/n/wf C60R — — — C60R 1,1223 n 23Mn6 — 1524 n 23Mn6 (1,1054) i 28Mn6 — 1527 w 28Mn6 1,1170 n 36Mn6 — 1536 w 38Mn6 (1,1127) n 42Mn6 — 1541 n 42Mn6 (1,1055) i JIS d — i/n/wf — — SMn420 n SMn433 n SMn438 n SMn443 n GB/Xxxxx/ 200x/ISC e — i/n/wf — — — — — — — — — — a See sources in the Bibliography b US steel listed in ASTM A 830 and in UNS (i f the steel number is given in brackets then the steel has only a UNS number) c European steel listed in EN 10083-2:2006 and in the “Stahl-Eisen-Liste” (if the steel number is given parentheses/brackets, the steel is only listed in the “Stahl-Eisen-Liste”) d Japanese Industrial Standard e Chinese National Standard f i = steel identical to ISO-steel grade; n = steel grade with closer match o f composition, but not identical; w = wider match © ISO 2016 – All rights reserved 37 ISO 683-1:2016(E) Annex D (informative) Dimensional standards applicable to products complying with this part of ISO 683 a) b) c) d) e) f) g) 38 ISO 1035-1, Hot-rolled steel bars — Part 1: Dimensions of round bars ISO 1035-2, Hot-rolled steel bars — Part 2: Dimensions of square bars ISO 1035-3, Hot-rolled steel bars — Part 3: Dimensions of flat bars ISO 1035-4, Hot-rolled steel bars — Part 4: Tolerances ISO 7452, Hot-rolled steel plates — Tolerances on dimensions and shape ISO 16124, Steel wire rod — Dimensions and tolerances ISO 16160, Hot-rolled steel sheet products — Dimensional and shape tolerances © ISO 2016 – All rights reserved ISO 683-1:2016(E) Bibliography [1] ISO 683-2, Heat-treatable steels, [2] [3] [4] [5] ISO 683-3, Heat-treatable steels, alloy steels and free-cutting steels — Part 3: Case-hardening steels ISO 683-4, Heat-treatable steels, alloy steels and free-cutting steels — Part 4: Free-cutting steels ISO 683-5, Heat treatable steels, alloy steels and free-cutting steels — Part 5: Nitriding steels ISO 683-14, Heat-treatable steels, alloy steels and free-cutting steels — Part 14: Hot-rolled steels for [6] [7] [8] [9] [9] [10] quenching and tempering alloy steels and free-cutting steels — Part 2: Alloy steels for quenched and tempered springs ISO 683-18, products Heat-treatable steels, alloy steels and free-cutting steels — Part 18: Bright steel ISO 4954, Steels for cold heading and cold extruding ISO 4960, Cold-reduced carbon steel strip with a mass fraction of carbon over 0, 25 % ISO/TR 9769, Steel and iron — Review of available methods of analysis EN 10204, Metallic products — Types of inspection documents EN 10083-2:2006, Steels for quenching and tempering — Technical delivery conditions for non alloy steels [11] EN 10247, Micrographic examination of the non-metallic inclusion content of steels using standard pictures [12] JIS G 0415, Steel and steel products — Inspection documents [13] JIS G 0555, Microscopic testing method for the non-metallic inclusions in steel [14] SAE J406c, Methods of Determining Hardenability of Steels © ISO 2016 – All rights reserved 39 ISO 683 -1 : 01 6(E) I C S 7 ; 7 Price based on 39 pages © ISO 2016 – All rights reserved ; 7