1、BRITISH STANDARDBS EN 10277-5:2008Bright steel products Technical delivery conditions Part 5: Steels for quenching and temperingICS 77.140.20; 77.140.60g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g4
2、0g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 10277-5:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 52935 1National forewordThis British Standard is the UK implementation of EN 10277-5:20
3、08. It supersedes BS EN 10277-5:1999 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ISE/31, Wrought steels.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include a
4、ll the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 10277-5March 2008
5、ICS 77.140.20; 77.140.60 Supersedes EN 10277-5:1999 English VersionBright steel products - Technical delivery conditions - Part 5:Steels for quenching and temperingProduits en acier transforms froid - Conditionstechniques de livraison - Partie 5: Aciers pour trempe etrevenuBlankstahlerzeugnisse - Te
6、chnische Lieferbedingungen -Teil 5: VergtungssthleThis European Standard was approved by CEN on 4 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 alte
7、ration. 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 trans
8、lationunder 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, G
9、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement
10、 Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10277-5:2008: EEN 10277-5:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Classifica
11、tion and designation.4 4.1 Classification4 4.2 Designation 4 5 Information to be supplied by the purchaser .4 6 Manufacturing process .4 7 Requirements.5 7.1 Chemical composition 5 7.2 Mechanical properties.5 7.3 Hardenability 5 7.4 Grain size5 7.5 Non-metallic inclusions 5 7.5.1 Microscopic inclusi
12、ons .5 7.5.2 Macroscopic inclusions 5 7.6 Options .5 8 Inspection and testing.5 8.1 Types and contents of inspection documents .5 8.2 Specific inspection 6 8.3 Verification of hardenability .6 9 Marking .6 BS EN 10277-5:2008EN 10277-5:2008 (E) 3 Foreword This document (EN 10277-5:2008) has been prep
13、ared 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 end
14、orsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 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
15、 identifying any or all such patent rights. This document supersedes EN 10277-5:1999. 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 Republic,
16、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. This European Standard EN 10277 Bright steel products - T
17、echnical delivery conditions is subdivided as follows: Part 1: General; Part 2: Steels for general engineering purposes; Part 3: Free-cutting steels; Part 4: Case hardening steels; Part 5: Steels for quenching and tempering. During the preparation of the first edition of this European Standard there
18、 were not enough statistical data available concerning mechanical properties of bright bar products. Since then it has been recognized that the proof strength values in the cold drawn condition were too high. In addition, cyclic stresses that occur during straightening can reduce the proof strength
19、(Bauschingers effect), which was not taken into account when drafting the first edition of this standard. In this second edition the proof strength values of non-alloy and alloy grades in condition +QT+C in parts 3 and 5 have been adjusted downwards compared to the first edition. Furthermore for thi
20、s part the tensile strength values of different grades were amended in the condition +QT+C in the tables for the mechanical properties for non alloy and alloy steels. BS EN 10277-5:2008EN 10277-5:2008 (E) 4 1 Scope This part of EN 10277 applies to bright steel bars in the drawn, turned or ground con
21、dition, in straight lengths of steels for quenching and tempering. This EN 10277-5 is complemented by EN 10277-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere
22、nces, the latest edition of the referenced document (including any amendments) applies. EN 10083-2, Steels for quenching and tempering - Part 2: Technical delivery conditions for non alloy steels EN 10083-3, Steels for quenching and tempering - Part 3: Technical delivery conditions for alloy steels
23、EN 10277-1, Bright steel products - Technical delivery conditions - Part 1: General 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10277-1 and the following apply. 3.1 steels for quenching and tempering engineering steels which because of th
24、eir chemical composition are suitable for hardening and in the quenched and tempered condition have good toughness at a given tensile strength. 4 Classification and designation 4.1 Classification Steel grades C35E, C35R, C40E, C40R, C45E, C45R, C50E, C50R, C60E and C60R are non-alloy special steels.
25、 All other steel grades covered by this European Standard are alloy special steels. 4.2 Designation See EN 10277-1. 5 Information to be supplied by the purchaser See EN 10277-1. 6 Manufacturing process See EN 10277-1. BS EN 10277-5:2008EN 10277-5:2008 (E) 5 7 Requirements 7.1 Chemical composition 7.
26、1.1 Cast analysis The chemical composition of the steel according to the cast analysis shall be as specified in Table 1. 7.1.2 Product analysis The permissible deviations from the chemical composition as specified in Table 1 for cast analysis and the product analysis of the steel shall be as specifi
27、ed in Table 2. 7.2 Mechanical properties The mechanical properties of the steels shall be as specified in Table 3, Table 4 and Table 5. 7.3 Hardenability Where steels are ordered with hardenability requirements, the requirements of EN 10083-2 shall apply for non alloyed steels and EN 10083-3 shall a
28、pply for alloyed steels. 7.4 Grain size Unless otherwise agreed at the time of ordering the grain size of non-alloy steels shall be left to the discretion of the manufacturer. If a fine grain structure is required in accordance with a reference treatment, option B.2 of EN 10277-1 shall be ordered. A
29、ll alloy steels shall show an austenitic grain size of 5 or finer. Only for verification see B.2 of EN 10277-1. 7.5 Non-metallic inclusions 7.5.1 Microscopic inclusions The steels shall have a cleanness corresponding to special steel quality. For details of the requirements for the verification of n
30、on-alloy steels see EN 10083-2, A.4 for and of alloy steels see EN 10083-3, A.3. 7.5.2 Macroscopic inclusions As freedom from macroscopic inclusions cannot be guaranteed in any steel, any requirement to verify the level present shall be agreed at the time of enquiry and order (see EN 10277-1, 7.5.2
31、and B.3.2). 7.6 Options See Annex B of EN 10277-1. 8 Inspection and testing 8.1 Types and contents of inspection documents See EN 10277-1. BS EN 10277-5:2008EN 10277-5:2008 (E) 6 8.2 Specific inspection See EN 10277-1. 8.3 Verification of hardenability See 10.3.2 of EN 10083-2 and EN 10083-3. 9 Mark
32、ing See EN 10277-1. BS EN 10277-5:2008EN 10277-5:2008 (E) 7 Table 1 Chemical composition (cast analysis) of steels for quenching and tempering Designation Chemical composition, % by massa,b,cSteel name Steel number Steel grade according to Cd Si max. Mn P max. S Cr Mo Ni V Cr+Mo+Ni max.dC35E 1.1181
33、EN 10083-2 0,32 to 0,39 0,40 0,50 to 0,80 0,030 0,035 0,40 0,10 0,40 - 0,63 C35R 1.1180 EN 10083-2 0,32 to 0,39 0,40 0,50 to 0,80 0,030 0,020 to 0,040 0,40 0,10 0,40 - 0,63 C40E 1.1186 EN 10083-2 0,37 to 0,44 0,40 0,50 to 0,80 0,030 0,035 0,40 0,10 0,40 - 0,63 C40R 1.1189 EN 10083-2 0,37 to 0,44 0,4
34、0 0,50 to 0,80 0,030 0,020 to 0,040 0,40 0,10 0,40 - 0,63 C45E 1.1191 EN 10083-2 0,42 to 0,50 0,40 0,50 to 0,80 0,030 0,035 0,40 0,10 0,40 - 0,63 C45R 1.1201 EN 10083-2 0,42 to 0,50 0,40 0,50 to 0,80 0,030 0,020 to 0,040 0,40 0,10 0,40 - 0,63 C50E 1.1206 EN 10083-2 0,47 to 0,55 0,40 0,60 to 0,90 0,0
35、30 0,035 0,40 0,10 0,40 - 0,63 C50R 1.1241 EN 10083-2 0,47 to 0,55 0,40 0,60 to 0,90 0,030 0,020 to 0,040 0,40 0,10 0,40 - 0,63 C60E 1.1221 EN 10083-2 0,57 to 0,65 0,40 0,60 to 0,90 0,030 0,035 0,40 0,10 0,40 - 0,63 C60R 1.1223 EN 10083-2 0,57 to 0,65 0,40 0,60 to 0,90 0,030 0,020 to 0,040 0,40 0,10
36、 0,40 - 0,63 34CrS4 1.7037 EN 10083-3 0,30 to 0,37 0,40 0,60 to 0,90 0,025 0,020 to 0,040 0,90 to 1,20 - - - - 41CrS4 1.7039 EN 10083-3 0,38 to 0,45 0,40 0,60 to 0,90 0,025 0,020 to 0,040 0,90 to 1,20 - - - - 25CrMoS4 1.7213 EN 10083-3 0,22 to 0,29 0,40 0,60 to 0,90 0,025 0,020 to 0,040 0,90 to 1,20
37、 0,15 to 0,30 - - - 42CrMoS4 1.7227 EN 10083-3 0,38 to 0,45 0,40 0,60 to 0,90 0,025 0,020 to 0,040 0,90 to 1,20 0,15 to 0,30 - - - 34CrNiMo6 1.6582 EN 10083-3 0,30 to 0,38 0,40 0,50 to 0,80 0,025 0,035 1,30 to 1,70 0,15 to 0,30 1,30 to 1,70 - - 39NiCrMo3 1.6510 EN 10083-3 0,35 to 0,43 0,40 0,50 to 0
38、,80 0,025 0,035 0,60 to 1,00 0,15 to 0,25 0,70 to 1,00 - - 51CrV4 1.8159 EN 10083-3 0,47 to 0,55 0,40 0,70 to 1,10 0,025 0,025 0,90 to 1,20 - - 0,10 to 0,25 - aElements not quoted shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of fini
39、shing 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. bWhere requirements are made on hardenability (see 7.3) slight deviations from
40、 the limits for the cast analysis are permissible, except for the elements, carbon (see footnote d), phosphorus and sulphur; the deviations shall not exceed the specifications of Table 2. cSteels with improved machinability as a result of the addition of higher sulphur contents up to around 0,10 % S
41、 (including resulphurized steels with controlled inclusion content (e.g. Ca-treatment) (modern method) or lead may be supplied on request. In the first case the upper limit for the manganese content may be increased by 0,15 %. d If the unalloyed steels are ordered without hardenability requirements
42、(symbols +H, +HH, +HL) or without requirements on the mechanical properties in the quenched and tempered condition restriction in the carbon range to 0,05 % and/or the total sum of the elements Cr, Mo and Ni to 0,45 % may be agreed at the time of ordering. BS EN 10277-5:2008EN 10277-5:2008 (E) 8 Tab
43、le 2 Permissible deviations between the product analysis and the limiting values given in Table 1 for the cast analysis Permissible deviationsaElement Permissible content in the cast analysis % by mass % by mass C 0,55 0,55 0,65 0,02 0,03 Si 0,40 + 0,03 Mn 1,00 1,00 1,10 0,04 0,05 P 0,035 + 0,005 S
44、0,040 + 0,005b Cr 1,70 0,05 Mo 0,30 0,03 Ni 1,70 0,05 V 0,25 0,02 a means that in one cast the deviation may occur over the upper value or under the lower value of the specified range in Table 1, but not both at the same time. bFor steels with a specified sulphur range (0,020 % to 0,040 % according
45、to cast analysis), the permissible deviation is 0,005 %BS EN 10277-5:2008EN 10277-5:2008 (E) 9 Table 3 Mechanical properties in the cold drawn (+C) condition Designation Mechanical properties a Cold drawn (+C) Steel name Steel number Thickness mm Proof strength b Rp0,2 MPa min. Tensile strength bRm
46、MPa Elongation A % min. 5 10 510 650 to 1 000 6 10 16 420 600 to 950 7 16 40 320 580 to 880 8 40 63 300 550 to 840 9 C35E C35R 1.11811.1180 63 270 520 to 800 9 5 10 540 700 to 1 000 6 10 16 460 650 to 980 7 16 40 365 620 to 920 8 40 63 330 590 to 840 9 C40E C40R 1.11861.1189 63 290 550 to 820 9 5 10
47、 565 750 to 1 050 5 10 16 500 710 to 1 030 6 16 40 410 650 to 1 000 7 40 63 360 630 to 900 8 C45E C45R 1.11911.1201 63 310 580 to 850 8 5 10 590 770 to 1 100 5 10 16 520 730 to 1 080 6 16 40 440 690 to 1 050 7 40 63 390 650 to 1 030 8 C50E C50R 1.12061.1241 63 - - - 5 10 630 800 to 1 150 5 10 16 550
48、 780 to 1 130 5 16 40 480 730 to 1 100 6 40 63 - - - C60E C60R 1.12211.1223 63 - - - aFor thickness 10 16 - - - - - 490 700 to 900 9 16 40 154 to 207 520 to 700 370 600 to 750 19 455 650 to 850 10 40 63 154 to 207 520 to 700 320 550 to 700 20 400 570 to 770 11 C35E C35R 1.1181 1.1180 63 100 154 to 2
49、07 520 to 700 320 550 to 700 20 385 550 to 750 12 5 10 - - - - - 560 800 to 1 000 8 10 16 - - - - - 525 750 to 950 8 16 40 163 to 211 550 to 710 400 630 to 780 18 490 700 to 900 9 40 63 163 to 211 550 to 710 350 600 to 750 19 435 620 to 820 10 C40E C40R 1.1186 1.1189 63 100 163 to 211 550 to 710 350 600 to 750 19 420 600 to 800 11 5 10 - - - - - 595 850 to 1 050 8 10 16
