SIST EN 10084:2008
(Main)Case hardening steels - Technical delivery conditions
Case hardening steels - Technical delivery conditions
This European Standard gives the technical delivery requirements for: - semi-finished products, hot formed, for example blooms, billets, slabs (see NOTE 2 and NOTE 3), bars (see NOTE 2), - rod, - wide flats, quarto plates, - hot-rolled sheet/plate and strip, - hammer and drop forgings (see NOTE 2), manufactured from the case hardening non alloyed or alloyed steels (see NOTE 4) listed in Table 3 and supplied in one of the heat treatment conditions given for the different types of products in Table 1, lines 2 to 7 and in one of the surface conditions given in Table 2. The steels are in general intended for the fabrication of case-hardened (see Clause 3) machine parts.
Einsatzstähle - Technische Lieferbedingungen
1.1 Diese Europäische Norm legt die technischen Lieferbedingungen fest für
- Halbzeug, warmgeformt, z. B.: Vorblöcke, Knüppel und Vorbrammen (siehe Anmerkungen 2 und 3),
- Stabstahl (siehe Anmerkung 2),
- Walzdraht,
- Breitflachstahl, Quartobleche,
- Warmgewalztes Blech und Band,
- Freiform- und Gesenkschmiedestücke (siehe Anmerkung 2)
aus den in Tabelle 3 aufgeführten unlegierten und legierten Einsatzstählen (siehe Anmerkung 4), die in einem
der für die verschiedenen Erzeugnisformen in Tabelle 1, Zeilen 2 bis 7, angegebenen Wärmebehandlungszustände
und in einer der in Tabelle 2 angegebenen Oberflächenausführungen geliefert werden.
Die Stähle sind im Allgemeinen zur Herstellung einsatzgehärteter (siehe Abschnitt 3) Maschinenteile vorgesehen.
ANMERKUNG 1 Europäische Normen für Stahlsorten mit gleichen Anforderungen an die chemische Zusammensetzung
wie in Tabelle 3, die jedoch in anderen Erzeugnisformen oder Behandlungszuständen geliefert werden oder für besondere
Anwendungsfälle vorgesehen sind, sowie Europäische Normen für ähnliche Stahlsorten sind in den Literaturhinweisen
zusammengestellt.
ANMERKUNG 2 Freiformgeschmiedetes Halbzeug (Vorblöcke, Knüppel, Vorbrammen usw.), nahtlos gewalzte Ringe
und freiformgeschmiedeter Stabstahl sind im Folgenden unter den Begriffen Halbzeug oder Stabstahl und nicht unter dem
Begriff Freiform- und Gesenkschmiedestücke erfasst.
ANMERKUNG 3 Bei Bestellung von unverformtem stranggegossenem Halbzeug sind besondere Vereinbarungen zu
treffen.
ANMERKUNG 4 Entsprechend EN 10020 handelt es sich bei den in dieser Europäischen Norm enthaltenen Stählen
um Edelstähle.
1.2 In Sonderfällen können bei der Bestellung Abweichungen von oder Zusätze zu diesen technischen Lieferbedingungen
vereinbart werden (siehe Anhang A).
Aciers pour cémentation - Conditions techniques de livraison
1.1 La présente norme européenne expose les conditions techniques de livraison concernant les produits suivants :
- demi-produits transformés à chaud, par exemple : blooms, billettes, brames (voir NOTES 2 et 3) ;
- barres (voir NOTE 2) ;
- fils-machine ;
- larges-plats, plaques quarto ;
- tôles/feuilles et bandes laminées à chaud ;
- pièces forgées par martelage ou estampage (voir NOTE 2) ;
fabriqués en aciers non alliés ou alliés pour cémentation (voir NOTE 4) et énumérés dans le Tableau 3 ; ils sont fournis dans l’un des états de traitement thermique indiqués pour les différents types de produits aux lignes 1 à 7 du Tableau 1 et dans l’un des états de surface mentionnés au Tableau 2.
Les aciers sont en général destinés à la fabrication de pièces mécaniques cémentées (voir article 3 ).
NOTE 1 Les Normes européennes relatives aux aciers qui sont conformes aux prescriptions de composition chimique du Tableau 2 mais fournis sous d’autres formes de produits ou dans des états de traitement autres que ceux indiqués ci dessus ou qui sont destinés à des applications spéciales, ainsi que les Normes européennes relatives à des nuances d’aciers similaires, sont énumérées dans la bibliographie.
NOTE 2 Les produits semi-finis forgés par martelage (blooms, billettes, brames, etc.), les anneaux laminés sans soudure et les barres forgées par martelage figurent parmi les produits semi-finis ou les barres, et non sous l'appellation « pièces forgées par martelage ou estampage ».
NOTE 3 La commande de demi-produits brut de coulée continue doit faire l'objet d'un accord particulier.
NOTE 4 Conformément à l'EN 10020, les aciers dont traite la présente norme européenne sont des aciers spéciaux.
1.2 Dans certains cas particuliers, il est possible de déroger aux présentes conditions techniques de livraison ou d'en ajouter d'autres, à condition d'en convenir au moment de l'appel d'offres et de la commande (voir Annexe A).
(...)
Cementacijska jekla - Tehnični dobavni pogoji
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Einsatzstähle - Technische LieferbedingungenAciers pour cémentation - Conditions techniques de livraisonCase hardening steels - Technical delivery conditions77.140.10Jekla za toplotno obdelavoHeat-treatable steelsICS:Ta slovenski standard je istoveten z:EN 10084:2008SIST EN 10084:2008en,fr,de01-junij-2008SIST EN 10084:2008SLOVENSKI
STANDARDSIST EN 10084:20001DGRPHãþD
SIST EN 10084:2008
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10084April 2008ICS 77.140.10Supersedes EN 10084:1998
English VersionCase hardening steels - Technical delivery conditionsAciers pour cémentation - Conditions techniques delivraisonEinsatzstähle - Technische LieferbedingungenThis European Standard was approved by CEN on 29 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10084:2008: ESIST EN 10084:2008
EN 10084:2008 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Classification and designation.5 4.1 Classification.5 4.2 Designation.6 5 Information to be supplied by the purchaser.6 5.1 Mandatory information.6 5.2 Options.6 6 Manufacturing process.7 6.1 Melting process.7 6.2 Deoxidation.7 6.3 Manufacture of the product.7 6.4 Heat-treatment condition and surface finish at the time of delivery.7 6.5 Cast separation.8 7 Requirements.8 7.1 Chemical composition, hardness and hardenability.8 7.2 Technological properties.8 7.3 Structure.8 7.4 Internal soundness.9 7.5 Surface condition.9 7.6 Dimensions, tolerances on dimensions and shape.9 8 Inspection and testing.9 8.1 Types and contents of inspection documents.9 8.2 Specific inspection and testing.10 9 Marking.10 Annex A (normative)
Options.31 Annex B (informative)
Dimensional standards applicable to products complying with this European Standard.33 Annex C (normative)
Determining the microscopic non-metallic inclusions content.34 Annex D (informative)
Comparison of steel grades specified in this European Standard and
ISO 683-11:1987 and other steel grades previously standardized nationally.35 Annex E (informative) Classification of steel grades according to minimum tensile strength as a function of diameter after hardening and tempering at 200 °C.36 Bibliography.37
SIST EN 10084:2008
EN 10084:2008 (E) 3 Foreword This document (EN 10084:2008) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by 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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10084:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Repub-lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 10084:2008
EN 10084:2008 (E) 4 1 Scope 1.1 This European Standard gives the technical delivery requirements for: semi-finished products, hot formed, for example blooms, billets, slabs (see NOTE 2 and NOTE 3), bars (see NOTE 2), rod, wide flats, quarto plates, hot-rolled sheet/plate and strip, hammer and drop forgings (see NOTE 2), manufactured from the case hardening non alloyed or alloyed steels (see NOTE 4) listed in Table 3 and sup-plied in one of the heat treatment conditions given for the different types of products in Table 1, lines 2 to 7 and in one of the surface conditions given in Table 2. The steels are in general intended for the fabrication of case-hardened (see Clause 3) machine parts. NOTE 1 European Standards relating to steels complying with the requirements for the chemical composition in Ta-ble 3 but which are supplied in other product forms or treatment conditions than given above or are intended for special applications, and European Standards for similar steel grades are listed in the Bibliography. NOTE 2 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are included under semi-finished products or bars and not under the term "hammer and drop forgings". NOTE 3 Special agreements shall be made when ordering non-deformed continuously cast semi-finished products. NOTE 4 In accordance with EN 10020, the steels covered by this European Standard are special steels. 1.2 In special cases variations in these technical delivery requirements or additions to them may form the subject of an agreement at the time of enquiry and order (see Annex A). 1.3 In addition to the specifications of this European Standard, the general technical delivery requirements of EN 10021 are applicable, unless otherwise specified. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10020, Definition and classification of grades of steel EN 10021, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steel - Part 2: Numerical system EN 10052, Vocabulary of heat treatment terms for ferrous products EN 10079, Definition of steel products SIST EN 10084:2008
EN 10084:2008 (E) 5
EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection method) EN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections - Part 2: Plates and wide flats EN 10204, Metallic products - Types of inspection documents EN 10221, Surface quality classes for hot-rolled bars and rods - Technical delivery conditions EN 10247:2007, Micrographic examination of the non-metallic inclusion content of steels using standard
pictures prCEN/TR 10261, Iron and steel - Review of available methods of chemical analysis EN 10308, Non destructive testing – Ultrasonic testing of steel bars EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 642, Steel - Hardenability test by end quenching (Jominy test) (ISO 642:1999) EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003) EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2005) EN 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 6508-1:2005) EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical com-position (ISO 14284:1996) 3 Terms and definitions For the purposes of this European Standard the terms and definitions given in EN 10020, EN 10021, EN 10052, EN 10079, EN ISO 377 and EN ISO 14284 and the following apply. 3.1 case-hardening steels steels with a relatively low carbon content which are intended for carburising or carbonitriding and subsequent hardening NOTE Such steels, after treatment, are characterised by a high hardness surface layer and a tough core. 4 Classification and designation 4.1 Classification All steels covered by this European Standard are classified according to EN 10020. Steel grades C10E, C10R, C15E, C15R, C16E and C16R are non alloy special steels. All other steels covered by this European Stan-dard are alloy special steels. SIST EN 10084:2008
EN 10084:2008 (E) 6 4.2 Designation 4.2.1 Steel names For the steel grades covered by this European Standard, the steel names as given in Table 3, Table 5 and Table 6 are allocated in accordance with EN 10027-1. 4.2.2 Steel numbers For the steel grades covered by this European Standard, the steel numbers as given in Table 3, Table 5 and Table 6 are allocated in accordance with EN 10027-2. 5 Information to be supplied by the purchaser 5.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity to be delivered; b) designation of the product form (e.g. round bar or square bar); c) number of the dimensional standard (see 7.6 and Annex B); d) dimensions and tolerances on dimensions and shape and, if applicable, letters denoting relevant special tolerances; e) number of this European Standard (EN 10084); f) steel name or steel number (see 4.2); g) standard designation for a test report 2.2 or, if required, any other type of inspection document in accor-dance with EN 10204 (see 8.1). 5.2 Options A number of options are specified in this European Standard and listed below. If the purchaser does not indi-cate his wish to implement one of these options, the supplier shall supply in accordance with the basis specifi-cation of this European Standard (see 5.1) any: a) particular heat-treatment condition at delivery (see 6.4.2 and Table 1); b) particular surface condition at delivery (see 6.4.3 and Table 2); c) requirement concerning minimum reduction ratio or minimum thickness deformation ratio of rolled and forged products (see 6.3 and A.5); d) verification of fine grain size (see 7.3.1, 8.2.3 and A.4); e) requirement for the verification of non-metallic inclusion content (see 7.3.2, A.1 and Annex C); f) requirement for restricted hardenability scatter bands for alloy steels (+HH, +HL-grades, see 7.1.2 and Table 6); g) verification of hardenability and if agreed the information about calculation of the hardenability (see 8.2.2); SIST EN 10084:2008
EN 10084:2008 (E) 7 h) requirement for internal soundness (see 7.4 and A.2); i) requirement relating to surface quality (see 7.5.3); j) requirement concerning suitability of bars and rod for bright drawing (see 7.5.4); k) requirement relating to removal of surface defects (see 7.5.5); l) requirement concerning special marking of the products (see clause 9 and A.6); m) verification of the product analysis (see A.3). EXAMPLE
20 round bars with nominal diameter 40 mm and the nominal length of 8 000 mm according to EN 10060 made of steel grade 20MnCr5 (1.7147) according to EN 10084 in the heat treatment condition +A with surface condition +BC, test report 2.2 as specified in EN 10204 20 round bars EN 10060 - 40x8000 EN 10084 - 20MnCr5+A+BC EN 10204 -2.2 or 20 round bars EN 10060 - 40x8000 EN 10084 - 1.7147+A+BC EN 10204 - 2.2 6 Manufacturing process 6.1 Melting process The type of melting process shall be left to the discretion of the manufacturer. 6.2 Deoxidation All steels shall be killed. 6.3 Manufacture of the product The manufacturing process route of the product shall be at the manufacturer’s discretion. For minimum reduction ratio or minimum thickness deformation ratio of rolled and forged products see A.5. 6.4 Heat-treatment condition and surface finish at the time of delivery 6.4.1 Normal condition at delivery Unless otherwise agreed at the time of enquiry and order, the products shall be delivered in the untreated, i.e. hot formed, condition. 6.4.2 Particular heat-treatment condition If so agreed at the time of enquiry and order, the products shall be delivered in one of the heat-treatment con-ditions given in Table 1, line 3 to line 8. SIST EN 10084:2008
EN 10084:2008 (E) 8 6.4.3 Particular surface condition If so agreed at the time of enquiry and order, the products shall be supplied in one of the special surface con-ditions given in Table 2, line 3 to line 7. 6.5 Cast separation The products shall be delivered as separated by cast. 7 Requirements 7.1 Chemical composition, hardness and hardenability 7.1.1 Table 1 gives a survey on combinations of usual heat-treatment conditions at delivery, product forms and requirements according to Table 3 to Table 7 (chemical composition, hardenability, maximum hardness, hardness range). 7.1.2 Unless otherwise agreed for alloy steels the hardenability requirements given in Table 5 apply. If agreed at the time of enquiry and order alloy steels with restricted hardenability scatter bands given in Table 6 shall be supplied. 7.2 Technological properties 7.2.1 Machinability All steels are machinable in the conditions “soft annealed”, “treated to hardness range”, “treated to fer-rite/pearlite structure and hardness range” and "normalized". Where improved machinability is required, the grades with a specified sulphur range should be ordered. (See also Table 3, footnote c). 7.2.2 Shearability of semi-finished products and bars 7.2.2.1 Under suitable shearing conditions (preheating, application of blades with a profile adapted to that of the product, etc.) all steels are shearable in the condition “soft annealed”. 7.2.2.2 The steel types 28Cr4, 28CrS4, 20MnCr5, 20MnCrS5, 22CrMoS3-5, 20MoCr3, 20MoCrS3, 20MoCr4, 20MoCrS4, 16NiCr4, 16NiCrS4, 18NiCr5-4, 17CrNi6-6, 15NiCr13, 17NiCrMo6-4, 17NiCrMoS6-4, 20NiCrMoS6-4, 18CrNiMo7-6, 14NiCrMo13-4 and 20NiCrMo13-4 and the corresponding grades with require-ments on hardenability (see Table 5 and Table 6), are, under suitable conditions, also shearable when sup-plied in the "treated to improve shearability" condition with the hardness requirements given in Table 7. 7.2.2.3 The non alloyed steels and the steels 17Cr3, 17CrS3, 16MnCr5, 16MnCrS5, 16MnCrB5, 18CrMo4, 18CrMoS4, 10NiCr5-4, 20NiCrMo2-2, 20NiCrMoS2-2 and the corresponding grades with requirements on hardenability (see Table 5 and Table 6) are shearable in the untreated condition under suitable conditions. 7.3 Structure 7.3.1 Grain size Unless otherwise agreed the steel shall show a fine grain structure with an austenitic grain size of 5 or finer (see 8.2.3 and A.4).
SIST EN 10084:2008
EN 10084:2008 (E) 9 7.3.2 Non-metallic inclusions 7.3.2.1 Microscopic inclusions The steels shall have a degree of cleanliness corresponding to the special steel quality (see A.1.1 and An-nex C). 7.3.2.2 Macroscopic inclusions As freedom from macroscopic inclusions cannot be ensured in any steel, requirements to verify the level pre-sent may be agreed at the time of enquiry and order (see Annex A.1.2). 7.4 Internal soundness Where appropriate, requirements relating to the internal soundness of products shall be agreed at the time of enquiry and order, if possible with reference to European standards. EN 10160 specifies requirements of ul-trasonic testing of flat products of thickness equal to or greater than 6 mm and EN 10308 specifies require-ments of ultrasonic testing of steel bars (see A.2). 7.5 Surface condition 7.5.1 All products shall have a surface finish appropriate to the manufacturing processes applied. 7.5.2 Minor surface imperfections which can occur also under normal manufacturing conditions, such as scores originating from rolled-in scale in the case of hot-rolled products, shall not be regarded as defects. 7.5.3 Where appropriate, requirements relating to the surface quality of the products shall be agreed on at the time of enquiry and order, in the case of hot-rolled bars and rods with reference to EN 10221, in the case of plate/sheet with reference to EN 10163-2. NOTE It is more difficult to detect and eliminate surface discontinuities from coiled products than from cut lengths. This should be taken into account when agreements on surface quality are made. 7.5.4 If suitability of bars, wide flats and rod for bright drawing is required, this shall be agreed at the time of enquiry and order. 7.5.5 The removal of surface defects by welding is only permitted with the approval of the purchaser or his representative. The method and permissible depth of defect removal, where appropriate, shall be agreed upon at the time of enquiry and order. 7.6 Dimensions, tolerances on dimensions and shape The nominal dimensions, tolerances on dimensions and shape for the product shall be agreed at the time of enquiry and order, if possible, with reference to the dimensional standards applicable (see Annex B). 8 Inspection and testing 8.1 Types and contents of inspection documents 8.1.1 Products complying with this European Standard shall be ordered and delivered with one of the in-spection documents as specified in EN 10204. The type of document shall be agreed upon at the time of en-quiry and order. If the order does not contain any specification of this type, a test report shall be issued. SIST EN 10084:2008
EN 10084:2008 (E) 10 8.1.2 If, in accordance with the agreements made at the time of enquiry and order, a test report 2.2 is to be issued, it shall contain the following information: a) confirmation that the material complies with the requirements of the order; b) results of the cast analysis for all the elements specified in Table 3 for the steel grade concerned. 8.1.3 If, in accordance with the order agreements, inspection certificate 3.1 or 3.2 is to be issued, the spe-cific tests described in 8.2 shall be carried out and the results shall be confirmed in the inspection certificate. In addition, the inspection certificate shall include the following information: a) the confirmation that the material complies with the requirements of the order; b) manufacturer's results for the cast analysis of all elements specified in Table 3 for the steel grade con-cerned, see Table 9; c) results of inspections and tests ordered as a result of supplementary options (see Annex A); d) symbol letters or numbers relating the inspection certificates, test pieces and products to each other. 8.2 Specific inspection and testing 8.2.1 Verification of hardness
For non alloy steels, the hardness requirements given in Table 1, column 8, sub-clause 2, shall be verified (see also Table 7 and Table 9).
8.2.2 Verification of hardenability For alloy steels as far as available the manufacturer has the option to verify the hardenability by calculation. The calculation method is left to the discretion of the manufacturer. If agreed at the time of enquiry and order the manufacturer shall give sufficient information about the calculation for the customer to confirm the result. If for certain steel grades a calculation formula is not available or in the case of dispute an end quench harde-nability test shall be carried out in accordance with EN ISO 642 and Table 9. The temperature for quenching shall comply with Table 8 of this document. The hardness values shall be determined in accordance with EN ISO 6508-1, method C. 8.2.3 Verification of austenitic grain size If the verification of fine grain structure is agreed at the time of enquiry and order, the verification of the aus-tenitic fine grain size shall be made according to A.4. 8.2.4 Visual and dimensional inspection A sufficient number of products shall be inspected to ensure compliance with the specification. 8.2.5 Retests See EN 10021. 9 Marking The manufacturer shall mark the products or the bundles or boxes in a suitable way so that it is possible to determine the cast, the steel grade and the origin of the delivery (see A.6).SIST EN 10084:2008
EN 10084:2008 (E) 11 Table 1 — Combinations of usual heat-treatment conditions at delivery, product forms and requirements according to Tables 3 to 7
1 2 3 4 5 6 7 8 9 10 x = Applicable for Applicable requirements for Non alloy steel grades Alloy steel grades 1 Heat-treatment condition at
delivery Symbol Semi- finished products Bars Rod Flat products Hammer and
drop for-gings 1. 2. 1. 2. 3. Remarks 2 Untreated None or + U x x x x x - 3 Treated to im-prove sheara-bility + S x x - - - Column+ S 4 Soft annealed
+ A x x x x x Column+ A 5 Treated to hardness range + TH - x x x x Column+ TH 6 Treated to fer-rite-pearlite structure and hardness range + FP - x - - x Column+ FP 7 Normalizeda
+N - - - x - Chemical com-position accord-ing to Tables 3 and 4 Brinell
hardness according to
Table 7
Column+ N As in column 8 (see footnote b to Table 3) Hardenability
values according to Table 5 or Table 6 Observe also options given in Annex A. 8 Others Other treatment conditions, for example certain annealing conditions to achieve a certain structure, may be agreed at the time of enquiry and order. The condition "annealed for spheroidal carbides (+AC) ", as required for cold heading and cold extrusion, is covered by EN 10263-4. a Normalizing may be replaced by normalizing forming. SIST EN 10084:2008
EN 10084:2008 (E) 12 Table 2 — Surface condition at delivery
1 2 3 4 5 6 7 8 9 X = in general applicable for 1 Surface condition at delivery Symbol Semi-finished products such as blooms, billets bars rods flat products hammer and drop forgings (see 1.1,
Note 2) Notes 2 Unless otherwise agreed Hot worked None or + HW x x x x x - 3 Unformed con-tinuously cast +CC x - - - - - 4 Hot worked and pickled + PI - - x x - a 5 Hot worked and blast cleaned + BC x x x x x a 6 Hot worked and
rough ma-chined + RM - x x - x a 7 Particular conditions supplied by agreement Others - - x x x x - a In addition certain surface treatments like oiled or limed or phosphated may be agreed.
SIST EN 10084:2008
EN 10084:2008 (E) 13 Table 3 — Steel grades and chemical composition (cast analysis) Steel grade % by massa, b, c
Name Number C Si max. Mn P max. S Cr Mo Ni B C10E 1.1121 0,07 to 0,13 0,40 0,30 to 0,600,035 ≤ 0,035 - - - - C10R 1.1207 0,07 to 0,13 0,40 0,30 to 0,600,035 0,020 to 0,040 - - - - C15E 1.1141 0,12 to 0,18 0,40 0,30 to 0,600,035 ≤ 0,035 - - - - C15R 1.1140 0,12 to 0,18 0,40 0,30 to 0,600,035 0,020 to 0,040 - - - - C16E 1.1148 0,12 to 0,18 0,40 0,60 to 0,900,035 ≤ 0,035 - - - - C16R 1.1208 0,12 to 0,18 0,40 0,60 to 0,900,035 0,020 to 0,040 - - - - 17Cr3 1.7016 ≤ 0,035 17CrS3 1.7014 0,14 to 0,20 0,40 0,60 to 0,900,025 0,020 to 0,040 0,70 to 1,00 - - - 28Cr4 1.7030 ≤ 0,035 28CrS4 1.7036 0,24 to 0,31 0,40 0,60 to 0,900,025 0,020 to 0,040 0,90 to 1,20 - - - 16MnCr5 1.7131 ≤ 0,035 16MnCrS5 1.7139 0,14 to 0,19 0,40 1,00 to 1,300,025 0,020 to 0,040 0,80 to 1,10 - - - 16MnCrB5 1.7160 0,14 to 0,19 0,40 1,00 to 1,300,025 ≤ 0,035 0,80 to 1,10 - - 0,0008 to 0,0050d
20MnCr5 1.7147 ≤ 0,035 20MnCrS5 1.7149 0,17 to 0,22 0,40 1,10 to 1,400,025 0,020 to 0,040 1,00 to 1,30 - - - 18CrMo4 1.7243 ≤ 0,035 18CrMoS4 1.7244 0,15 to 0,21 0,40 0,60 to 0,900,025 0,020 to 0,040 0,90 to 1,20 0,15 to 0,25 - - 22CrMoS3-5 1.7333 0,19 to 0,24 0,40 0,70 to 1,000,025 0,020 to 0,040 0,70 to 1,00 0,40 to 0,50 - - 20MoCr3 1.7320 ≤ 0,035 20MoCrS3 1.7319 0,17 to 0,23 0,40 0,60 to 0,900,025 0,020 to 0,040 0,40 to 0,70 0,30 to 0,40 - - 20MoCr4 1.7321 ≤ 0,035 20MoCrS4 1.7323 0,17 to 0,23 0,40 0,70 to 1,000,025 0,020 to 0,040 0,30 to 0,60 0,40 to 0,50 - - 16NiCr4 1.5714 ≤ 0,035 16NiCrS4 1.5715 0,13 to 0,19 0,40 0,70 to 1,000,025 0,020 to 0,040 0,60 to 1,00 - 0,80 to 1,10 - 10NiCr5-4 1.5805 0,07 to 0,12 0,40 0,60 to 0,900,025 ≤ 0,035 0,90 to 1,20 - 1,20 to 1,50 - 18NiCr5-4 1.5810 0,16 to 0,21 0,40 0,60 to 0,900,025 ≤ 0,035 0,90 to 1,20 - 1,20 to 1,50 - 17CrNi6-6 1.5918 0,14 to 0,20 0,40 0,50 to 0,900,025 ≤ 0,035 1,40 to 1,70 - 1,40 to 1,70 - 15NiCr13 1.5752 0,14 to 0,20 0,40 0,40 to 0,700,025 ≤ 0,035 0,60 to 0,90 - 3,00 to 3,50 - 20NiCrMo2-2 1.6523 ≤ 0,035 20NiCrMoS2-2 1.6526 0,17 to 0,23 0,40 0,65 to 0,950,025 0,020 to 0,040 0,35 to 0,70 0,15 to 0,25 0,40 to 0,70 - 17NiCrMo6-4 1.6566 ≤ 0,035 17NiCrMoS6-4 1.6569 0,14 to 0,20 0,40 0,60 to 0,900,025 0,020 to 0,040 0,80 to 1,10 0,15 to 0,25 1,20 to 1,50 - 20NiCrMoS6-4 1.6571 0,16 to 0,23 0,40 0,50 to 0,900,025 0,020 to 0,040 0,60 to 0,90 0,25 to 0,35 1,40 to 1,70 - 18CrNiMo7-6 1.6587 0,15 to 0,21 0,40 0,50 to 0,900,025 ≤ 0,035 1,50 to 1,80 0,25 to 0,35 1,40 to 1,70 - 14NiCrMo13-4 1.6657 0,11 to 0,17 0,40 0,30 to 0,600,025 ≤ 0,035 0,80 to 1,10 0,20 to 0,30 3,00 to 3,50 - 20NiCrMo13-4 1.6660 0,17 to 0,22 0,40 0,30 to 0,600,025 ≤ 0,035 0,80 to 1,20 0,30 to 0,50 3,00 to 3,50 - a Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition of such elements from scrap or other material used in manufacture which affect the hardenability, mechanical properties and applicability. b Where requirements are made on hardenability (see Table 5 and Table 6), slight deviations from the limits for the cast analysis are permitted, except for phosphorus and sulphur; these deviations shall, however, not exceed in the case of carbon ± 0,01 % and in all other cases the values acc. to table 4. c Steels with improved machinability as a result of the a
...
SLOVENSKI oSIST prEN 10084:2006
PREDSTANDARD
marec 2006
Cementacijska jekla - Tehnični dobavni pogoji
Case hardening steels - Technical delivery conditions
ICS 77.140.10 Referenčna številka
oSIST prEN 10084:2006(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN 10084
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2006
ICS 77.140.10 Will supersede EN 10084:1998
English Version
Case hardening steels - Technical delivery conditions
Aciers pour cémentation - Conditions techniques de Einsatzstähle - Technische Lieferbedingungen
livraison
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ECISS/TC 23.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10084:2006: E
worldwide for CEN national Members.
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prEN 10084:2006 (E)
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Classification and designation.5
4.1 Classification.5
4.2 Designation .5
5 Information to be supplied by the purchaser .6
5.1 Mandatory information.6
5.2 Options .6
6 Manufacturing process .7
6.1 Melting process.7
6.2 Deoxidation .7
6.3 Manufacture of the product .7
6.4 Heat-treatment condition and surface finish at the time of delivery.7
6.5 Cast separation.7
7 Requirements.8
7.1 Chemical composition, hardness and hardenability .8
7.2 Technological properties .8
7.3 Structure .8
7.4 Internal soundness.8
7.5 Surface quality .9
7.6 Dimensions, tolerances on dimensions and shape.9
8 Inspection and testing.9
8.1 Types and contents of inspection documents .9
8.2 Specific inspection and testing.10
9 Marking .10
Annex A (normative) Options .31
Annex B (informative) Dimensional standards applicable to products complying with this
European Stand .33
Annex C (normative) Determining the non-metallic inclusion content.34
Annex D (informative) Comparison of steel grades specified in this European Standard and ISO
683-11:1987 and other steel grades previously standardized nationally.36
Annex E (informative) Classification of steel grades according to minimum tensile strength as a
function of diameter after quenching and tempering at 200 °C.37
Bibliography .38
2
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prEN 10084:2006 (E)
Foreword
This document (prEN 10084:2006) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat
treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by
DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10084:1998.
3
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prEN 10084:2006 (E)
1 Scope
1.1 This European Standard gives the technical delivery requirements for
semi-finished products, hot formed, for example blooms, billets, slabs (see NOTES 2 and 3)
bars (see NOTE 2)
rod
wide flats, quarto plates
hot-rolled sheet/plate and strip
hammer and drop forgings (see NOTE 2)
manufactured from the case hardening non alloyed or alloyed steels (see NOTE 4) listed in Table 3 and sup-
plied in one of the heat treatment conditions given for the different types of products in Table 1, lines 2 to 7
and in one of the surface conditions given in Table 2.
The steels are in general intended for the fabrication of case-hardened (see clause 3) machine parts.
NOTE 1 European Standards relating to steels complying with the requirements for the chemical composition in Ta-
ble 3 but which are supplied in other product forms or treatment conditions than given above or are intended for special
applications, and European Standards for similar steel grades are listed in the bibliography.
NOTE 2 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged
bars are included under semi-finished products or bars and not under the term "hammer and drop forgings".
NOTE 3 Special agreements shall be made when ordering undeformed continuously cast semi-finished products.
NOTE 4 In accordance with EN 10020, the steels covered by this European Standard are special steels.
1.2 In special cases variations in these technical delivery requirements or additions to them may form the
subject of an agreement at the time of enquiry and order (see annex A).
1.3 In addition to the specifications of this European Standard, the general technical delivery requirements
of EN 10021 are applicable, unless otherwise specified.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 10020, Definition and classification of grades of steel
EN 10021, General technical delivery requirements for steel and iron products
EN 10027-1, Designation systems for steel - Part 1: Steel names
EN 10027-2, Designation systems for steel - Part 2: Numerical system
EN 10052, Vocabulary of heat treatment terms for ferrous products
EN 10079, Definition of steel products
4
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prEN 10084:2006 (E)
EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection
method)
EN 10163-2, Delivery requirements for surface condition of hot rolled steel plates, wide flats and sections -
Part 2: Plates and wide flats
EN 10204, Metallic products - Types of inspection documents
EN 10221, Surface quality classes for hot-rolled bars and rods - Technical delivery conditions
EN 10308, Non destructive testing – Ultrasonic testing of steel bars
EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical
testing (ISO 377:1997)
EN ISO 642, Steel - Hardenability test by end quenching (Jominy test) (ISO 642:1999)
EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003)
EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:1999)
EN ISO 6508-1, Metallic materials - Rockwell hardness test (scales A, B, C, D, E, F, G, H, K, N, T) - Part 1:
Test method (ISO 6508-1:1999)
EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical com-
position (ISO 14284:1996)
3 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 10020, EN 10021, EN
10052, EN 10079, EN ISO 377 and EN ISO 14284 and the following apply.
3.1
case-hardening steels
Steels with a relatively low carbon content which are intended for carburising or carbonitriding and subsequent
hardening. Such steels, after treatment, are characterised by a high hardness surface layer and a tough core
4 Classification and designation
4.1 Classification
All steels covered by this European Standard are classified according to EN 10020. Steel grades C10E, C10R,
C15E, C15R, C16E and C16R are non alloy special steels. All other steels covered by this European Stan-
dard are alloy special steels.
4.2 Designation
4.2.1 Steel names
For the steel grades covered by this European Standard, the steel names as given in Tables 3, 5 and 6 are
allocated in accordance with EN 10027-1.
4.2.2 Steel numbers
For the steel grades covered by this European Standard, the steel numbers as given in Tables 3, 5 and 6 are
allocated in accordance with EN 10027-2.
5
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prEN 10084:2006 (E)
5 Information to be supplied by the purchaser
5.1 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. round bar or square bar);
c) the number of the dimensional standard (see 7.6);
d) the dimensions and tolerances on dimensions and shape and, if applicable, letters denoting relevant spe-
cial tolerances;
e) the number of this European Standard (EN 10084);
f) steel name or steel number (see 4.2);
g) the standard designation for a test report (2.2) or, if required, any other type of inspection document in
accordance with EN 10204 (see 8.1).
5.2 Options
A number of options are specified in this European Standard and listed below. If the purchaser does not indi-
cate his wish to implement one of these options, the supplier shall supply in accordance with the basis specifi-
cation of this European Standard (see 5.1).
a) any particular heat-treatment condition at delivery (see 6.4.2 and Table 1);
b) any particular surface condition at delivery (see 6.4.3 and Table 2);
c) any requirement concerning minimum reduction ratio of rolled and forged products (see 6.3 and A.5),
d) any verification of fine grain size (see 7.3.1, 8.2.2 and A.4),
e) any requirement for the verification of non-metallic inclusion content (see 7.3.2, A.1 and annex C),
f) any requirement for restricted hardenability scatter bands for alloy steels (+HH, +HL-grades, see 7.1.2
and Table 6),
g) any verification of hardenability and if agreed the information about calculation of the hardenability (see
8.2.1),
h) any requirement for internal soundness (see 7.4 and A.2),
i) any requirement relating to surface quality (see 7.5.3),
j) any requirement concerning suitability of bars and rod for bright drawing (see 7.5.4),
k) any requirement relating to removal of surface defects (see 7.5.5),
l) any requirement concerning special marking of the products (see clause 9 and A.6),
m) any verification of the product analysis (see Table 9 and A.3).
6
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prEN 10084:2006 (E)
EXAMPLE
20 round bars with nominal diameter 40 mm and the nominal length of 8000 mm according to EN 10060 made of steel
grade 20MnCr5 (1.7147) according to EN 10084 in the heat treatment condition +A with surface condition +BC, test report
2.2 as specified in EN 10204
20 round bars EN 10060 - 40x8000
EN 10084 - 20MnCr5+A+BC
EN 10204 -2.2
or
20 round bars EN 10060 - 40x8000
EN 10084 - 1.7147+A+BC
EN 10204 - 2.2
6 Manufacturing process
6.1 Melting process
The type of melting process is left to the discretion of the manufacturer.
6.2 Deoxidation
All steels shall be killed.
6.3 Manufacture of the product
The manufacturing process route of the product shall be at the manufacturer’s discretion.
For minimum reduction ratio respectively minimum thickness deformation ratio of rolled and forged products
see A.5.
6.4 Heat-treatment condition and surface finish at the time of delivery
6.4.1 Normal condition at delivery
Unless otherwise agreed at the time of enquiry and order, the products shall be delivered in the untreated, i.e.
hot formed, condition.
6.4.2 Particular heat-treatment condition
If so agreed at the time of enquiry and order, the products shall be delivered in one of the heat-treatment con-
ditions given in Table 1, lines 3 to 8.
6.4.3 Particular surface condition
If so agreed at the time of enquiry and order, the products shall be supplied in one of the special surface con-
ditions given in Table 2, lines 3 to 7.
6.5 Cast separation
The products shall be delivered separated by cast.
7
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prEN 10084:2006 (E)
7 Requirements
7.1 Chemical composition, hardness and hardenability
7.1.1 Table 1 gives a survey on combinations of usual heat-treatment conditions at delivery, product forms
and requirements according to Tables 3 to 7 (chemical composition, hardenability, maximum hardness, hard-
ness range).
7.1.2 Unless otherwise agreed (see 5.2 d) for alloy steels the hardenability requirements given in Table 5
apply. If agreed at the time of enquiry and order alloy steels with restricted hardenability scatter bands given in
Table 6 can be supplied.
7.2 Technological properties
7.2.1 Machinability
All steels are machinable in the conditions “annealed to maximum hardness requirements”, “treated to hard-
ness range”, “treated to ferrite/pearlite structure and hardness range” and "normalized".
Where improved machinability is required, the grades with a specified sulphur range should be ordered. (See
also Table 3, footnote c).
7.2.2 Shearability of semi-finished products and bars
7.2.2.1 Under suitable shearing conditions (preheating, application of blades with a profile adapted to that
of the product, etc.) all steels are shearable in the condition “annealed to maximum hardness requirements”.
7.2.2.2 The steel types 28Cr4, 28CrS4, 20MnCr5, 20MnCrS5, 22CrMoS3-5, 20MoCr3, 20MoCrS3,
20MoCr4, 20MoCrS4, 16NiCr4, 16NiCrS4, 18NiCr5-4, 17CrNi6-6, 15NiCr13, 17NiCrMo6-4, 17NiCrMoS6-4,
20NiCrMoS6-4 and 18CrNiMo7-6 and the corresponding grades with requirements on hardenability (see Ta-
bles 5 and 6), are, under suitable conditions, also shearable when supplied in the "treated to improve sheara-
bility" condition with the hardness requirements given in Table 7.
7.2.2.3 The non alloyed steels and the steels 17Cr3, 17CrS3, 16MnCr5, 16MnCrS5, 16MnCrB5, 18CrMo4,
18CrMoS4, 10NiCr5-4, 20NiCrMo2-2, 20NiCrMoS2-2 and the corresponding grades with requirements on
hardenability (see Tables 5 and 6) are shearable in the untreated condition under suitable conditions.
7.3 Structure
7.3.1 Unless otherwise agreed the steel shall show a fine grain structure with an austenitic grain size of 5 or
finer.
7.3.2 The steels shall have a degree of cleanliness corresponding to the special steel quality (see A.1
and C).
7.4 Internal soundness
Where appropriate, requirements relating to the internal soundness of products shall be agreed at the time of
enquiry and order, if possible with reference to European standards. EN 10160 specifies requirements of ul-
trasonic testing of flat products of thickness equal to or greater than 6 mm and EN 10308 specifies require-
ments of ultrasonic testing of steel bars (see A.2).
8
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prEN 10084:2006 (E)
7.5 Surface quality
7.5.1 All products shall have a surface finish appropriate to the manufacturing processes applied.
7.5.2 Minor surface imperfections which may occur also under normal manufacturing conditions, such as
scores originating from rolled-in scale in the case of hot-rolled products, shall not be regarded as defects.
7.5.3 Where appropriate, requirements relating to the surface quality of the products shall be agreed on at
the time of enquiry and order, in the case of hot-rolled bars and rods with reference to EN 10221, in the case
of flat products with reference to EN 10163-2.
NOTE It is more difficult to detect and eliminate surface discontinuities from coiled products than from cut lengths.
This should be taken into account when agreements on surface quality are made.
7.5.4 If suitability of bars, wide flats and rod for bright drawing is required, this shall be agreed at the time of
enquiry and order.
7.5.5 The removal of surface defects by welding is only permitted with the approval of the purchaser or his
representative.
The method and permissible depth of defect removal, where appropriate, shall be agreed at the time of en-
quiry and order.
7.6 Dimensions, tolerances on dimensions and shape
The nominal dimensions, tolerances on dimensions and shape for the product shall be agreed at the time of
enquiry and order, if possible, with reference to the dimensional standards applicable (see annex B).
8 Inspection and testing
8.1 Types and contents of inspection documents
8.1.1 Products complying with this European Standard shall be ordered and delivered with one of the in-
spection documents as specified in EN 10204. The type of document shall be agreed upon at the time of en-
quiry and order. If the order does not contain any specification of this type, a test report shall be issued.
8.1.2 If, in accordance with the agreements made at the time of enquiry and order, a test report 2.2 is to be
issued, it shall contain the following information:
a) the confirmation that the material complies with the requirements of the order;
b) the results of the cast analysis for all the elements specified in Table 3 for the steel grade concerned.
8.1.3 If, in accordance with the order agreements, inspection certificate 3.1 or 3.2 is to be issued, the spe-
cific tests described in 8.2 shall be carried out and the results shall be confirmed in the inspection certificate.
In addition, the inspection certificate shall include the following information:
a) the manufacturer's results for the cast analysis of all elements specified in Table 3 for the steel grade
concerned;
b) the results of inspections and tests ordered as a result of supplementary options (see annex A);
c) the symbol letters or numbers relating the inspection certificates, test pieces and products to each other.
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prEN 10084:2006 (E)
8.2 Specific inspection and testing
8.2.1 Verification of hardenability
8.2.1.1 For non alloy steels, the hardness requirements given in table 1, column 8, sub-clause 2, shall be
verified.
8.2.1.2 For alloy steels as far as available the manufacturer has the option to verify the hardenability by cal-
culation. The calculation method is left to the discretion of the manufacturer. If agreed at the time of enquiry
and order the manufacturer shall give sufficient information about the calculation for the customer to confirm
the result.
If for certain steel grades a calculation formula is not available or in the case of dispute an end quench harde-
nability test shall be carried out in accordance with EN ISO 642. The temperature for quenching shall comply
with table 8 of this document. The hardness values shall be determined in accordance with EN ISO 6508-1,
method C.
8.2.2 Verification of the grain size
If the verification of fine grain structure is agreed at the time of enquiry and order, the verification of fine grain
size shall be made according to annex A.4.
8.2.3 Visual and dimensional inspection
A sufficient number of products shall be inspected to ensure compliance with the specification.
8.2.4 Retests
See EN 10021.
9 Marking
The manufacturer shall mark the products or the bundles or boxes in a suitable way so that it is possible to
determine the cast, the steel grade and the origin of the delivery (see A.6).
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prEN 10084:2006 (E)
Table 1 — Combinations of usual heat-treatment conditions at delivery, product forms and requirements according to Tables 3 to 7
2 3 4 5 6 7 8 9 10
1
x = Applicable for Applicable requirements for
Heat-treatment
Hammer Non alloy steel grades Alloy steel grades
Semi-
Symbol Remarks
1 condition at
Flat and
finished Bars Rod
delivery
products
drop for-
1. 2. 1. 2. 3.
products
gings
None
x x x x x -
2 Untreated
or + U
Treated to im-
Column
+ S x x - - -
3 prove sheara-
+ S
bility
Annealed to
maximum Column
+ A x x x x x
4
Chemical com- Brinell Observe
+ A
hardness re-
As in column 8 Hardenability
position accord- hardness also options
quirements (see footnote values according
ing to Tables 3 according given in
b to Table 3) to Table 5 or 6
Treated to
Column
and 4 to annex A.
5 + TH - x x x x
Table 7 + TH
hardness range
Treated to fer-
rite-pearlite
Column
6 + FP - x - - -
+ FP
structure and
hardness range
Column
a
+N - - - x -
7
Normalized
+ N
Other treatment conditions, for example certain annealing conditions to achieve a certain structure, may be agreed at the time of enquiry and order.
8 Others
The condition "annealed for spheroidal carbides (+AC) ", as required for cold heading and cold extrusion, is covered by EN 10263-4.
a
Normalizing may be replaced by normalizing forming
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prEN 10084:2006 (E)
Table 2 — Surface condition at delivery
1 2 3 4 5 6 7 8 9
X = in general applicable for
hammer
Semi-finished and drop
1 Surface condition at delivery Symbol Notes
flat
products such as bars rods forgings
products
blooms, billets (see 1.1,
Note 2)
Unless None
2 otherwise Hot worked or x x x x x -
agreed + HW
Unformed con-
-
3 +CC x - - - -
tinuously cast
Hot worked and
a
4 + PI - - x x -
pickled
Particular
conditions
Hot worked and
5
+ BC x x x x x a
supplied
blast cleaned
by agreement
Hot worked and
6
rough ma- + RM - x x - x a
chined
7
Others
a
In addition certain surface treatments like oiled or limed or phosphated may be agreed.
12
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prEN 10084:2006 (E)
Table 3 — Steel grades and chemical composition (cast analysis)
a, b, c
Steel designation
% by mass
Si P
Name Number C Mn S Cr Mo Ni B
max. max.
C10E 1.1121 0,07 to 0,13 0,40 0,30 to 0,60 0,035 ≤ 0,035 - - - -
C10R 1.1207 0,07 to 0,13 0,40 0,30 to 0,60 0,035 0,020 to 0,040 - - - -
C15E 1.1141 0,12 to 0,18 0,40 0,30 to 0,60 0,035 ≤ 0,035 - - - -
C15R 1.1140 0,12 to 0,18 0,40 0,30 to 0,60 0,035 0,020 to 0,040 - - - -
C16E 1.1148 0,12 to 0,18 0,40 0,60 to 0,90 0,035 ≤ 0,035 - - - -
C16R 1.1208 0,12 to 0,18 0,40 0,60 to 0,90 0,035 0,020 to 0,040 - - - -
17Cr3 1.7016 ≤ 0,035
0,14 to 0,20 0,40 0,60 to 0,90 0,025 0,70 to 1,00 - - -
17CrS3 1.7014 0,020 to 0,040
28Cr4 1.7030 ≤ 0,035
0,24 to 0,31 0,40 0,60 to 0,90 0,025 0,90 to 1,20 - - -
28CrS4 1.7036 0,020 to 0,040
16MnCr5 1.7131 ≤ 0,035
0,14 to 0,19 0,40 1,00 to 1,30 0,025 0,80 to 1,10 - - -
16MnCrS5 1.7139 0,020 to 0,040
0,0008 to
16MnCrB5 1.7160 0,14 to 0,19 0,40 1,00 to 1,30 0,025 ≤ 0,035 0,80 to 1,10 - -
d
0,0050
20MnCr5 1.7147 ≤ 0,035
0,17 to 0,22 0,40 1,10 to 1,40 0,025 1,00 to 1,30 - - -
20MnCrS5 1.7149 0,020 to 0,040
18CrMo4 1.7243 ≤ 0,035
0,15 to 0,21 0,40 0,60 to 0,90 0,025 0,90 to 1,20 0,15 to 0,25 - -
18CrMoS4 1.7244 0,020 to 0,040
22CrMoS3-5 1.7333 0,19 to 0,24 0,40 0,70 to 1,00 0,025 0,020 to 0,040 0,70 to 1,00 0,40 to 0,50 - -
20MoCr3 1.7320 ≤ 0,035
0,17 to 0,23 0,40 0,60 to 0,90 0,025 0,40 to 0,70 0,30 to 0,40 - -
20MoCrS3 1.7319 0,020 to 0,040
20MoCr4 1.7321 ≤ 0,035
0,17 to 0,23 0,40 0,70 to 1,00 0,025 0,30 to 0,60 0,40 to 0,50 - -
20MoCrS4 1.7323 0,020 to 0,040
16NiCr4 1.5714 ≤ 0,035
0,13 to 0,19 0,40 0,70 to 1,00 0,025 0,60 to 1,00 - 0,80 to 1,10 -
16NiCrS4 1.5715 0,020 to 0,040
10NiCr5-4 1.5805 0,07 to 0,12 0,40 0,60 to 0,90 0,025 ≤ 0,035 0,90 to 1,20 - 1,20 to 1,50 -
18NiCr5-4 1.5810 0,16 to 0,21 0,40 0,60 to 0,90 0,025 ≤ 0,035 0,90 to 1,20 - 1,20 to 1,50 -
17CrNi6-6 1.5918 0,14 to 0,20 0,40 0,50 to 0,90 0,025 ≤ 0,035 1,40 to 1,70 - 1,40 to 1,70 -
15NiCr13 1.5752 0,14 to 0,20 0,40 0,40 to 0,70 0,025 ≤ 0,035 0,60 to 0,90 - 3,00 to 3,50 -
20NiCrMo2-2 1.6523 ≤ 0,035
0,17 to 0,23 0,40 0,65 to 0,95 0,025 0,35 to 0,70 0,15 to 0,25 0,40 to 0,70 -
20NiCrMoS2-2 1.6526 0,020 to 0,040
17NiCrMo6-4 1.6566 ≤ 0,035
0,14 to 0,20 0,40 0,60 to 0,90 0,025 0,80 to 1,10 0,15 to 0,25 1,20 to 1,50 -
17NiCrMoS6-4 1.6569 0,020 to 0,040
20NiCrMoS6-4 1.6571 0,16 to 0,23 0,40 0,50 to 0,90 0,025 0,020 to 0,040 0,60 to 0,90 0,25 to 0,35 1,40 to 1,70 -
18CrNiMo7-6 1.6587 0,15 to 0,21 0,40 0,50 to 0,90 0,025 ≤ 0,035 1,50 to 1,80 0,25 to 0,35 1,40 to 1,70 -
14NiCrMo13-4 1.6657 0,11 to 0,17 0,40 0,30 to 0,60 0,025 ≤ 0,035 0,80 to 1,10 0,20 to 0,30 3,00 to 3,50 -
20NiCrMo13-4 1.6xxx 0,17 to 0,22 0,40 0,30 to 0,60 0,025 ≤ 0,035 0,80 to 1,20 0,30 to 0,50 3,00 to 3,50 -
a
Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finish
ing the heat. All reasonable precautions shall be taken to prevent the addition of such elements from scrap or other material used in manufacture which
affect the hardenability, mechanical properties and applicability.
b
Where requirements are made on hardenability (see Tables 5 and 6), slight deviations from the limits for the cast analysis are permitted, except for
phosphorus and sulphur; these deviations shall, however, not exceed in the case of carbon ± 0,01 % and in all other cases the values acc. to table 4.
c
Steels with improved machinability as a result of the addition of higher sulphur contents up to around 0,10 % S (including resulphurized steels with con-
trolled inclusion content (e.g. Ca-treatment)) may be supplied on request. In this c
...
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