SIST EN 10263-4:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Walzdraht, Stäbe und Draht aus Kaltstauch- und Kaltfließpressstählen - Teil 4: Technische Lieferbedingungen für VergütungsstähleBarres, fil machine et fils en acier pour transformation à froid et extrusion à froid - Partie 4: Conditions techniques de livraison des aciers pour trempe et revenuSteel rod, bars and wire for cold heading and cold extrusion - Part 4: Technical delivery conditions for steels for quenching and tempering77.140.65Jeklene 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 10263-4:2017SIST EN 10263-4:2018en,fr,de01-februar-2018SIST EN 10263-4:2018SLOVENSKI
STANDARDSIST EN 10263-4:2002/AC:2003SIST EN 10263-4:20021DGRPHãþD



SIST EN 10263-4:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10263-4
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 vã t r r sEnglish Version
Steel rodá bars and wire for cold heading and cold extrusion æ Part
vã Technical delivery conditions for steels for quenching and tempering Barresá fil machine et fils en acier pour transformation à froid et extrusion à froid æ Partie
vã Conditions techniques de livraison des aciers pour trempe et revenu
Walzdrahtá Stäbe und Draht aus Kaltstauchæ und Kaltfließpressstählen æ Teil
vã Technische Lieferbedingungen für Vergütungsstähle 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 vã t r s y ESIST EN 10263-4:2018



EN 10263-4:2017 (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 . 4 5.1 Steelmaking process . 4 5.2 Deoxidation . 4 6 Requirements . 4 6.1 Delivery conditions . 4 6.2 Chemical composition . 5 6.3 Mechanical properties . 5 6.4 Hardenability . 5 6.5 Surface requirements . 5 6.6 Supplementary or special requirements . 5
SIST EN 10263-4:2018



EN 10263-4:2017 (E) 3 European foreword This document (EN 10263-4:2017) 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 10263-4:2001. 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 10263-4:2018



EN 10263-4:2017 (E) 4 1 Scope 1.1 This part of EN 10263 is applicable to round rod and round bars and wire with a diameter up to and including 100 mm, of non-alloy and alloy steel, intended for cold heading, cold extrusion, subsequent quenching and tempering or induction hardening or flame 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 quenched and tempered steels engineering steels which, because of their chemical composition, are suitable for hardening and in the quenched and tempered condition to provide enhanced toughness at a given tensile strength 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 C35EC to C45RC 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. 5 Production Process 5.1 Steelmaking process See EN 10263-1:2017. 5.2 Deoxidation All steels according to this part of EN 10263 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. SIST EN 10263-4:2018



EN 10263-4:2017 (E) 5 6.2 Chemical composition 6.2.1 Cast analysis The chemical composition for the cast analysis shall be in accordance with the values specified in Tables 3 and 4. 6.2.2 Product analysis In cases where a product analysis is requested, the permissible deviations from the values specified for the cast analysis are indicated in Table 5. 6.3 Mechanical properties The mechanical properties of the products, to be determined by the tensile test, shall be in accordance with the Tables 6, 7 and 8 but by considering the prescriptions given in Table 1 and the delivery condition 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 Tables 3 and 4 are supplemented by the symbol “+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 Tables 9 and 11. 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 10. 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 9, 10 and 11. 6.4.4 Core hardening In the case of products ordered with requirements for core hardening, that is when the steel name or number, as quoted in Tables 3 and 4 is supplemented by the symbol “+CH”, the core hardening temperature, the hardness values and the corresponding maximum diameters for the lowest hardenability shall be in compliance with the values given in Table 12. 6.5 Surface requirements 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 which can be agreed at the time of enquiry and order are described in EN 10263-1:2017, Annex A.
SIST EN 10263-4:2018



EN 10263-4:2017 (E) 6 Table 1 — Summary of delivery conditions, 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 bar rod wire Tables 3 and 4, 6 or 7 or 8 Tables 3 and 4, 6 or 7 or 8, 9 or 10 or 11 Tables 3 and 4, 6 or 7 or 8, 12 Tables 3,4,6,7,8,9, 10,11 or 12 untreated None or +U X X – Chemical composition as specified in Tables 3 and 4 Mechanical properties as specified in Table 6 or 7 or 8 Chemical composition as specified in Tables 3 and 4 Mechanical properties as specified in Table 6 or 7 or 8 Values for hardenability according to Tables 9 or 10 or 11 Chemical composition as specified in Tables 3 and 4 Mechanical properties as specified in Table 6 or 7 or 8 Minimum core hardness and maximum diameter according to Table 12 Supplementary or special requirements as specified in Annex A of EN 10263-1 a spheroidised +AC X X X Others Other delivery conditions may be agreed at the time of ordering Key X = applicable
= not applicable a If agreed at the time of the enquiry and order. SIST EN 10263-4:2018



EN 10263-4:2017 (E) 7 Table 2 — Surface condition at delivery Surface condition at delivery Symbol bar rod wire Unless otherwise agreed as rolled none or +AR x x – Particular surface conditions supplied by agreement cold drawn +C – – x skin passed +LC x – x peeled +PE x x x SIST EN 10263-4:2018



EN 10263-4:2017 (E) 8 Table 3 — Chemical composition for steel grades without boron – cast analysis % by mass Steel grade C b Si max a Mn P max S Cr Mo Ni Cu max Steel name Steel number C35EC C35RC C45EC C45RC 1.1172 1.1060 1.1192 1.1061 0,32 to 0,39 0.32 to 0,39 0,42 to 0,50 0,42 to 0,50 0,30 0,30 0,30 0,30 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,025 0,025 0,025 0,025 0,025 max 0.020 to 0,035 0,025 max 0.020 to 0,035
0,25 0,25 0,25 0,25 37Mo2 1.5418 0,35 to 0,40 0,30 0,60 to 0,90 0,025 0,025 max
0,20 to 0,30
0,25 38Cr2 46Cr2 34Cr4 37Cr4 41Cr4 41CrS4 1.7003 1.7006 1.7033 1.7034 1.7035 1.7039 0,35 to 0,42 0,42 to 0,50 0,30 to 0,37 0,34 to 0,41 0,38 to 0,45 0,38 to 0,45 0,30 0,30 0,30 0,30 0,30 0,30 0,50 to 0,80 0,50 to 0,80 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,025 0,025 0,025 0,025 0,025 0,025 0,025 max 0,025 max 0,025 max 0,025 max 0,025 max 0.020 to 0,040 0,40 to 0,60 0,40 to 0,60 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20
0,25 0,25 0,25 0,25 0,25 0,25 25CrMo4 25CrMoS4 34CrMo4 37CrMo4 42CrMo4 42CrMoS4 1.7218 1.7213 1.7220 1.7202 1.7225 1.7227 0,22 to 0,29 0,22 to 0,29 0,30 to 0,37 0,35 to 0,40 0,38 to 0,45 0,38 to 0,45 0,30 0,30 0,30 0,30 0,30 0,30 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90 0,025 0,025 0,025 0,025 0,025 0,025 0,025 max 0.020 to 0,040 0,025 max 0,025 max 0,025 max 0.020 to 0,040 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20 0,90 to 1,20 0,15 to 0,30 0,15 to 0,30 0,15 to 0,30 0,15 to 0,30 0,15 to 0,30 0,15 to 0,30
0,25 0,25 0,25 0,25 0,25 0,25 34CrNiMo6 41NiCrMo7–3–2 1.6582 1.6563 0,30 to 0,38 0.38 to 0,44 0,30 0,30 0,50 to 0,80 0,60 to 0,90 0,025 0,025 0,025 max 0,025 max 1,30 to 1,70 0,70 to 0,90 0,15 to 0,30 0,15 to 0,30 1,30 to 1,70 1,65 to 2,00 0,25 0,25 a Lower silicon contents may be agreed at the time of ordering, in which case due consideration should be given to the effects that could result for what concerns the specified properties such as, for example, hardenability. b A carbon range of 0,04 % (e.g. 0,33 % - 0,37 %) may be agreed at the time of enquiry and order. NOTE 1 Elements not quoted in this table should not be intentionally added to the steel without the agreement of the purchaser, except those intended for finishing the heat. All reasonable precautions shall be taken in order to prevent the addition of such elements from scrap or other materials used in the production process, which may affect the hardenability, mechanical properties and applicability. NOTE 2 In the case of steels with hardenability requirements (see Tables 9 to 11) minor deviation from the specified limits are permitted (with the exception of sulphur and phosphorus), provided that they do not exceed 0,01 % for carbon and the values indicated in Table 5 for the other elements. NOTE 3 To improve the performance of cold heading, it is possible to add Aluminium Al: 0,020 to 0,050 %. SIST EN 10263-4:2018



EN 10263-4:2017 (E) 9 Table 4 — Chemical composition for boron alloyed steel grades – cast analysis % by mass Steel grade C Si a Mn P max S max Cr b Mo Cu max B Steel name Steel number 17B2 1.5502 0,15 to 0,20
0,30 0,60 to 0,90 0,025 0,025
0,30
0,25 0,0008 to 0,005 23B2 1.5508 0,20 to 0,25
0,30 0,60 to 0,90 0,025 0,025
0,30
0,25 0,0008 to 0,005 28B2 1.5510 0,25 to 0,30
0,30 0,60 to 0,90 0,025 0,025
0,30
0,25 0,0008 to 0,005 33B2 1.5514 0,30 to 0,35
0,30 0,60 to 0,90 0,025 0,025
0,30
0,25 0,0008 to 0,005 38B2 1.5515 0,35 to 0,40
0,30 0,60 to 0,90 0,025 0,025
0,30
0,25 0,0008 to 0,005 17MnB4 1.5520 0,15 to 0,20
0,30 0,90 to 1,20 0,025 0,025
0,30
0,25 0,0008 to 0,005 23MnB3 1.5507 0,21 to 0,25 0,15 max. 0,80 to 1,00 0,015 0,015 0,25 to 0,35
0,25 0,0008 to 0,005 20MnB4 1.5525 0,18 to 0,23
0,30 0
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