1、 STD.BSI BS EN LZb7-ENGL 1778 Lb2qbb 070877b 800 BRITISH STANDARD Ferritic-pearlitic steels for precipitation hardening from hot-working temperatures The European Standard EN 102671998 has the status of a British Standard ICs 77.140.10; 77.140.20 BS EN 10267:1998 NO COPYING WITHOUT BSI PERMISSION EX
2、CEPT AS PERMITTED BY COPYRIGH LAW COPYRIGHT European Committee for StandardizationLicensed by Information Handling Services - STD-BSI BS EN L02b7-ENGL 1996 LbZLibb 0708777 7Li7 D AmdNo. Date BS EN 1026E1998 Text afeckd This British Standard, having been prepared under the direction of the Engineerin
3、g Sector Board, was published under the authority of the Standards Board and comes int effect on 15 June 1998 O BSI 1998 National foreword This British Standard is the English language version of EN 10267:1998. The UK participation in its preparation was entrusted to Technical Committee ISEl, Wrough
4、t steels, which has the responsibility to: - aid enquirem to understand the te* - present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate t
5、hem in the UK. A iist of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section e
6、ntided “International Standards Correspondence Index“, or by using the “Find“ faciiity of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a conimct Users of British Standards are responsible for their correct application. Complia
7、nce with a British Standard does not of itself confer immunity from legai obligations. ISBN O 680 29162 6 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesEUROPEAN STANDARD NORNE EUR0PEE”E EUROP NORM EN 10267 January 1998 ICs 77.140; 77.140.10 Descriptors: Ste
8、els, non alloy steels, heat treatable steels, hot-working, billets, metal bars, designaion, grades: quality, chemical composition, mechanical properties, quality, inspection, conformity tests, testing conditions, marking Enghh version Ferritic-tic steels for precipitation hardening bm hot-worlang te
9、rnpraturw Aciers de type ferritepdite aptes au durcissement par prcipitation partir des tempratures de formage chaud Von Warmformgebungstmpemtur awscheidungshrtende ferritjsch-prlitische Sthle This European Standard was approved by CEN on 11 December 1997. CEN members are bound to comply with the CE
10、N/CENELEC Internai Regulations which stipuiate the conditions for giving this European Standard the status of a national standard without any alteration. Uptdate lists and bibliojpphicai references concerning such national standards may be obtained on application to the Centrai Secretariat or to any
11、 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other ianguage made by translation under the responsibility of a CEN member into its om language and notified to the Central Secretariai has the same status as the official versions. CEN
12、members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comiti Europen de No
13、rmalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 102671998 E COPYRIGHT European Committee for StandardizationLicensed by Info
14、rmation Handling ServicesSTD-BSI BS EN LOZb7-ENGL L97 m Lb2LibbS 0708777 5LT Page 2 EN 10267:199 Foreword This European Standard has been prepared by ECISSAC 23, Steels for heat treatment, alloy steels and free-cutting steeisquaiities, the Secretariat of which is held by DIN. This European Standard
15、shall be given the status of a national standard, either by publication of an identicai text or by endorsement, at the latest by July 1998, and conflictin$ nationai standards shai be withdrawn at the latest by July 1998. Accordng to the CENKENELEC Internal Regulations, the national standards organiz
16、ations of the following countries are bound to implement this European Standard Austsia, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugai, Spain, Sweden, Switzerland and the United Kingdom. contents Foreword 1 Scop
17、e 2 Nomative references 3 Definitions 4 Classicaion and designation 4.1 Classification 4.2 Designation 5 5.1 Mandatory information 5.2 Options 6 Manufactwingprocess 6.1 General 6.2 Deoxidation 6.3 Heat-treatment and surface condition 7 Requirements 7.1 Chemical composition and mechanical 7.2 Structu
18、re 7.3 Internalsoundn 7.4 Surfacequaiity 7.5 Dimensions, tolerances on dimensions and shape 8 Inspectionandtesting 8.1 Qpes and contents of inspection documents 8.2 Specific inspection and testing Annex A (normative) Supplementary or special requirements Annex B (informative) Guide to aditional prop
19、erty values Annex C (iodve) Dimensional standards applicable to products complying with this European standard Information to be supplied by the purchaser at delivery properties 9 Marking page 2 3 3 3 3 3 3 4 4 4 5 11 11 11 O BSI 1998 COPYRIGHT European Committee for StandardizationLicensed by Infor
20、mation Handling Services STD-BSI BS EN 202b7-ENGL 2778 Lb24bb9 0708780 231 D * * tn 1 scope 1.1 This European Standard gives the technical delivery requirements for semi-finished products and bars of the non-doy special steels listed in Tables 3 and 5. The products are supplied in the conditions giv
21、en in Table 1, line 2 to 4, and in one of the surface conditions given in Table 2. 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
22、 of this European Standard, the general technical delivery requirements of EN 10021 are applicable, unless otherwise specified. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These nonnative references are cited at the ap
23、propriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications appy to this European Standard oniy when incorporated in it by amendment or revision. For undated references the latest edition of the publ
24、ication referred to applies. EN 1OOO2-1, Metallic mutenals - Tme testing - Part 1: Method of test (at ambient hpemture). EN loOO.%l, Metallic materials - BrineU hardness test - Part 1: Test method. EN 10020, Definition and clussifCation of gmdes of steel. EN 10021, Geneml technical delivery requirem
25、ents for steel and iron products. EN 10027-1, Designation systems for steel - Part 1: Steel names, principal symbols. EN 10027-2, Designation systems for steel - Part 2: Numerical system. EN 10079, Definition of steel products. EN 10204, Metallic products - n/pes of inspection documents (includes am
26、endment Al: 1995). EN 10221, Surjce quality chses for hot-rolled bars and rods - Technical delivery conditions. CR 10260, ECISS IC 10 - Designution systems for steel - Additid symbols for steel names. CR 10261, ECISS IC 11 - Iron and steel - Mew of available methods of chemical analysis. prEN IS0 37
27、7, Steel and steel products - Location and preparation of test pieces for mechaniud testing. IS0 14284, Steel and iron - Sampling and preparation of samples for th determination of cMical composition. Page 3 EN 102671998 3 Denitions For the purposes of this European Standard, the definitions given i
28、n EN 10020, EN 10021, EN 10079, prEN IS0 377 and IS0 14284 apply. 4 Classification and designation 4.1 Classification Ali steels covered by this European Standard are classified as non-doy special steels according to EN 10020. 4.2 Designation 4.2.1 Steel names For the steel grades covered by this Eu
29、ropean Standard, the steel mes as given in Tables 3 and 5 are allocated in accordance with EN 10027-1 and CR 10260. 4.2.2 Steel numbers For the steel grades covered by this European Standard, the steel numbers as given in Tables 3 and 5 are docated in accordance with EN 10027-2. 5 Information to be
30、supplied by the purchaser 6.1 Mandatory information The following information shali 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 or square). c) The number of the dimensional standard. d) The dimensi
31、ons and tolerances on dimensions and shape and, if applicable, letters denotrng relevant special tolerances. e) The number of this European Standard (EN 10267). f) Steel name or steel number (see 4.2). g) If appropriate, the symbol for the treatment condition at delivery (see 6.3.1 and Table 1). h)
32、If appropriate, the symbol for the surface condition at delivery (see 6.3.2 and Table 2). i) If required, the type of inspection document in accordance with EN 10204 (see 8.1). 20 rounds EURONORM 60 - 40 X 8OOO EXAMPLE: EN 10267 - 19MnVS6+P EN 10204 - 2.2 or 20 rounds EURONORM 60 - 40 X 8OOO EN 1026
33、7 - 1.1301+P EN 10204 - 2.2 O BSI 1998 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD-BSI BS EN 102b7-ENGL 1998 1b24bb7 0706781 178 9 Page4 EN 10267:1998 6.2 Options A number of options are specified in this European Standard and are iisted below. if the
34、 purchaser does not indicate his wish to implement one of these options, the supplier shall supply in accordance with the base specification of this European Standard (see 6.1). a) Any requirement concerning non-metallic inclusion content (see 7.2.2 and A.l). b) Any requirement for internai soundnes
35、s (see 7.3 and A.2). c) Any requirement rem to surface quality (see 7.4.1). d) Any requirement relating to removal of surface defects (see 7.4.2). e) Any requirement concerning special marking of the products (see clause 9 and A.4). f) Any verification of the product anaysis (see Table 6 and A.3). 6
36、 1Manufacturing process 6.1 General The manufactwing process of the steel and of the products is left to the discretion of the manufacturer with the restrictions given by the requirements in 6.2 and 6.3. 6.2 Deoxidation All steels Shall be killed. 6.3 Heat-treatment and surface condition at delivery
37、 6.3.1 Heat-treatment condition Products which are intended for hot forging, shall be delivend in the untreated condition or in the condition treated for cold shearing“. products which are intended for machhing, shall be delivered in the precipitation hardened condition 6.3.2 Sw$me condition Unless
38、otherwise agreed (see Table 2, lines 3 to 6) at the time of enquiry and order, the products shall be delivered in the ashot-worked condition. 6.3.3 Cast separation The steels shai be delivered sepamted by casts. Identined products stemming from severai casts may be delivered in the same means of lmn
39、sport, e.g. lorry or wagon. 7 Requirements 7.1 Chemical composition and mechanical properties 7.1.1 Where the products are to be delivered in the untreated condition, the requirements for chemical composition given in Tables 3 and 4 apply. In addition, for products to be delivered in the conition tr
40、eated for cold shearing“, a maximum Brineli hardness of 256 applies. NOTE Guidance data for mechanical properties of hot forgings after precipitation hardening are given in Table B. 1. 7.1.2 Where the products are to be delivered in the precipitation hardened condition, the requirements for mechanic
41、al properties given in Table 5 apply. NOTE in this case, the chemical composition given in Table 3 is for guidance oniy. 7.2 Structure 7.2.1 Steels in Table 5 are controlaoled from the hot-working temperatwe to produce a ferritic-pearlitic sh-ucture. Under certain circumstances, small portions of ba
42、inite and/or martensite may be present. 7.2.2 For the content of non-metallic inclusions, see Al. 7.3 Internai soundness Requirements for internal soundness may be agreed upon at the time of enquiry and order, e.g. on the basis of nondestructive tests (see A.2). 7.4 Surface quaity 7.4.1 At the time
43、of enquiry and order, agreements may be made Concerning the required surface Wty. In the case of bars, such agreements should be made in accordance with EN 10221. 7.4.2 Repair of surface discontinuities by welding is not permitted If surface discontinuities are removed, the kind of surface discontin
44、uities and permissible depth for their removal should, where appropriate, 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 tolerances for the product shall be agreed at the time of enquiry a
45、nd order, if possible, with reference to the dimensionai standards applicable (see annex C). O BSI 1998 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD-BSI BS EN 102b7-ENGL 1998 = LbZLibb9 0708782 OOLi 8 Inspection and testing 8.1 mes and contents of insp
46、ection documents 8.1.1 For each delivery, the issue of any inspection document according to EN 10204 may be agreed upon at the time of enquiry and order. 8.1.2 If, in accordance with the agreements made at the time of enquiry and order, a test report is to be provided, this shai cover a) the stateme
47、nt that the material complies with the requirements of the order; b) the resuits of the cast analysis for ail elements specified for the type of steel supplied. also applies to the grades of Table 5.) 8.1.3 If, in accordance with the agreements in the order, an inspection certificate 3.1.4 3.1.B or
48、3.1.C or an inspection report 3.2 (see EN 10204) is to be provided, the specific inspections and tests described in 8.2 shail be camied out and their results shall be certified in the document. In addition, the document shail cover: a) the results of the cast anaysis provided by the manufacturer for
49、 all elements specified in Table 3 for the steel type concerned (this also applies to the grades of Table 5); b) the results of ail inspections and tests ordered by supplementary requirements (see annex A); c) the symbol letters or numbers connecting the inspection documents, the test pieces and products to each other. Table 1 - Combinations of usual conditions at delivery, product forms (and their application) and requirements according to Tables 3 to 6 3 Page 6 EN 102671998 1 - 1 - 2 4 8.2 Specific inspection and testing 8.2.1 Ver
