SIST EN 10263-3:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Walzdraht, Stäbe und Draht aus Kaltstauch- und Kaltfließpressstählen - Teil 3: Technische Lieferbedingungen für EinsatzstähleBarres, fil machine et fil en acier pour transformation à froid à froid et extrusion à froid - Partie 3: Conditions techniques de livraison des aciers de cémentationSteel rod, bars and wire for cold heading and cold extrusion - Part 3: Technical delivery conditions for case hardening steels77.140.65Jeklene žice, jeklene vrvi in verigeSteel wire, wire ropes and link chains77.140.60Jeklene palice in drogoviSteel bars and rodsICS:Ta slovenski standard je istoveten z:EN 10263-3:2017SIST EN 10263-3:2018en,fr,de01-februar-2018SIST EN 10263-3:2018SLOVENSKI
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SIST EN 10263-3:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10263-3
November
t r s y ICS
y yä s v rä x râ
y yä s v rä x w Supersedes EN
s r t x uæ uã t r r sEnglish Version
Steel rodá bars and wire for cold heading and cold extrusion æ Part
uã Technical delivery conditions for case hardening steels Barresá fil machine et fil en acier pour transformation à froid à froid et extrusion à froid æ Partie
uã Conditions techniques de livraison des aciers de cßmentation
Walzdrahtá Stäbe und Draht aus Kaltstauchæ und Kaltfließpressstählen æ Teil
uã Technische Lieferbedingungen für Einsatzstähle This European Standard was approved by CEN on
t x July
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s r t x uæ uã t r s y ESIST EN 10263-3:2018



EN 10263-3:2017 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Classification and Designation . 4 4.1 Classification . 4 4.2 Designation. 4 5 Production process . 5 5.1 Steelmaking process . 5 5.2 Deoxidation . 5 6 Requirements . 5 6.1 Delivery conditions . 5 6.2 Chemical composition . 5 6.2.1 Cast analysis . 5 6.2.2 Product analysis . 5 6.3 Mechanical properties . 5 6.4 Hardenability . 5 6.5 Surface quality. 6 6.6 Supplementary or special requirements . 6 Table 1 — Combination of heat-treatment condition at delivery, product forms and applicable requirements . 7 Table 2 — Surface condition at delivery . 8 Table 3 — Steel grades and chemical composition. Heat analysis % (by mass). 8 Table 4 — Permissible deviations between product analysis and the limiting values specified in Table 3 for the heat analysis . 10 Table 5 — Mechanical properties of non-alloyed steel grades . 11 Table 6 — Mechanical properties of boron-alloyed steel grades . 12 Table 7 — Mechanical properties of alloyed steel grades . 13 Table 8 — Hardness limits for steel grades with standard hardenability (+H grades - see 6.4.1) . 15 Table 9 — Hardness limits for steel grades with restricted hardenability scatter bands (+HH and +HL grades - see 6.4.2) . 16
SIST EN 10263-3:2018



EN 10263-3:2017 (E) 3 European foreword This document (EN 10263-3:2017) has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires”, the secretariat of which is held by AFNOR. 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 May 2018, and conflicting national standards shall be withdrawn at the latest by May 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10263-3:2001. This European Standard EN 10263 is subdivided as follows: — Part 1: General technical delivery conditions — Part 2: Technical delivery conditions for steels not intended for heat treatment after cold working — Part 3: Technical delivery conditions for case hardening steels — Part 4: Technical delivery conditions for steels for quenching and tempering — Part 5: Technical delivery conditions for stainless steels According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 10263-3:2018



EN 10263-3:2017 (E) 4 1 Scope 1.1 This part of EN 10263 is applicable to round rod, round bars and wire with a diameter up to and including 100 mm, of non-alloy and alloy steel, intended for cold heading and cold extrusion and case hardening. 1.2 EN 10263-1:2017 is indispensable for this part of EN 10263. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, 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 10263-1:2017, Steel rod, bars and wire for cold heading and cold extrusion — Part 1: General technical delivery conditions 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10263-1:2017 and the following apply. 3.1 case-hardening steels structural steels with a relatively low carbon content, which are carburized or carbonitrided on their surface and subsequently hardened Note 1 to entry: These steels, after hardening, have a high degree of hardness in the surface zone and good resistance to wear, while the core material is characterized principally by extreme toughness. Note 2 to entry: Further possibilities for heat treatment of case-hardening steels are, for example, nitrocarburizing and nitriding. 4 Classification and Designation 4.1 Classification All steels covered by this part of EN 10263 are special steels according to EN 10020. Steel grades from C10E2C to C20E2C as quoted in Table 3 are non-alloy steels and all others are alloy steels according to EN 10020. 4.2 Designation See EN 10263-1:2017. SIST EN 10263-3:2018



EN 10263-3:2017 (E) 5 5 Production process 5.1 Steelmaking process See EN 10263-1:2017. 5.2 Deoxidation All steels quoted in Table 3 shall be deoxidised. 6 Requirements 6.1 Delivery conditions The delivery conditions in which the products covered by this part of EN 10263 are normally supplied, the product forms and the applicable requirements are given in Tables 1 and 2. 6.2 Chemical composition 6.2.1 Cast analysis The chemical composition shall be in accordance with the values specified in Table 3 for the cast analysis. 6.2.2 Product analysis In cases where a product analysis is requested, the admissible deviations from the values specified for the cast analysis are indicated in Table 4. 6.3 Mechanical properties The mechanical properties of the products, to be determined by the tensile test or hardness test, shall be in accordance with Tables 5, 6 and 7 but by consideration of the prescriptions given in Table 1 and of the delivery conditions given in Table 2. 6.4 Hardenability 6.4.1 In the case of products ordered with standard requirements regarding hardenability, that is, when the steel names or numbers as quoted in Table 3 are supplemented by the symbols “+H”, the hardness values obtained in the end quench test (Jominy test) (see Table 1 of EN 10263-1:2017) shall be in compliance with the values given in Table 8. 6.4.2 In the case of products ordered with restricted requirements regarding the scatter bands of the hardness values obtained by the Jominy test, that is when the steel name or number as quoted in Table 3 is supplemented by the symbol “+HH” or “+HL”, the above hardness values shall be in compliance with the values given in Table 9. NOTE 1 The symbol “+HH” denotes that the upper limit of the scatter band coincides with the upper limit for the corresponding steel “+H”. NOTE 2 The symbol “+HL” denotes that the lower limit of the scatter band coincides with the lower limit for the corresponding steel “+H”. NOTE 3 See EN 10263-1:2017, 7.7.4 and 10.2 6.4.3 The austenizing temperatures for the Jominy test are given in Tables 8 and 9. SIST EN 10263-3:2018



EN 10263-3:2017 (E) 6 6.5 Surface quality For any particular surface requirement to be agreed at the time of ordering see EN 10263-1:2017, 7.10. 6.6 Supplementary or special requirements Other requirements that can be agreed at the time of enquiry and order are described in Annex A of EN 10263-1:2017.
SIST EN 10263-3:2018



EN 10263-3:2017 (E) 7 Table 1 — Combination of heat-treatment condition at delivery, product forms and applicable requirements Heat-treatment condition at delivery Symbol Products form Applicable requirements in cases where the steel concerned has been ordered with reference to the steel names indicated in rod bar wire Tables 3, 5 or 6 or 7 Tables 3,5 or 6 or 7,8 or 9 Table 3,5,6,7,8 or 9 untreated None or +U X X X Chemical composition as specified in Tables 3 and 4 Mechanical properties as specified in Table 5 or 6 or 7 Chemical composition as specified in Tables 3 and 4 Mechanical properties as specified in Table 5 or 6 or 7 Values for hardenability according to Tables 8 or 9 Supplementary or special requirements as specified in Annex A of EN 10263-1:2017 a spheroidized +AC X X X Treated to ferrite-pearlite structure and hardness range +FP – X
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