1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 1: Non alloy and alloy steelsThe European Standard EN 10294-1:2005 has the status of a British
2、 StandardICS 77.140.75Hollow bars for machining Technical delivery conditions BRITISH STANDARDBS EN 10294-1:2005BS EN 10294-1:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 December 2005 BSI 23 December 2005ISBN 0 580 47372 4Cross-ref
3、erencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of Britis
4、h Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front
5、cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on this c
6、ommittee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Nation
7、al forewordThis British Standard is the official English language version of EN 10294-1:2005. It partially replaces BS 6258:1988 which will remain current until BS EN 10294-2 is published. The reader should be aware that work has not yet begun on BS EN 10294-2.The UK participation in its preparation
8、 was entrusted to Technical Committee ISE/8, Steel pipes, which has the responsibility to: aid enquirers to understand the text;EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 10294-1October 2005ICS 77.140.75English VersionHollow bars for machining - Technical delivery conditions - Part1: Non allo
9、y and alloy steelsBarres creuses pour usinage - Conditions techniques delivraison - Partie 1 : Aciers non allis et allisStahlrohre fr die spanende Bearbeitung (Drehteilrohre) -Technische Lieferbedingungen - Teil 1: Unlegierte undlegierte SthleThis European Standard was approved by CEN on 29 August 2
10、005.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
11、 application to the Central Secretariat 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 Central Secretariat h
12、as the same status as the officialversions.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, Slov
13、akia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for
14、 CEN national Members.Ref. No. EN 10294-1:2005: EEN 10294-1:2005 (E) 2 Contents Page Foreword 4 1 Scope .5 2 Normative references .5 3 Terms and definitions.5 4 Symbols.6 5 Classification and designation 6 5.1 Classification.6 5.2 Designation .6 6 Information to be supplied by the purchaser7 6.1 Man
15、datory information .7 6.2 Options 7 6.3 Example of an order7 7 Manufacturing process.8 7.1 Steelmaking process 8 7.2 Deoxidation process.8 7.3 Tube manufacture and delivery conditions 8 8 Requirements 8 8.1 General 8 8.2 Chemical composition8 8.3 Mechanical properties 10 8.4 Machinability .11 8.5 Ap
16、pearance .11 8.6 Straightness 11 8.7 Preparation of ends 12 8.8 Dimensions, masses and tolerances.12 9 Inspection22 9.1 Type of inspection 22 9.2 Inspection documents 22 9.3 Inspection and testing 23 10 Sampling23 10.1 Frequency of tests 23 10.2 Preparation of samples and test pieces24 11 Test metho
17、ds.24 11.1 Tensile test 24 11.2 Impact test.24 11.3 Dimensional inspection25 11.4 Visual examination25 11.5 Retests, sorting and reprocessing 25 12 Marking 25 13 Temporary corrosion protection26 Annex A (normative) Method for establishing machinability data27 A.1 General 27 A.2 Tube sizes27 A.3 Mach
18、ining parameters 27 EN 10294-1:2005 (E) 3 Bibliography.28 EN 10294-1:2005 (E) 4 Foreword This European Standard (EN 10294-1:2005) has been prepared by Technical Committee ECISS/TC 29 “steel tubes and fittings for steel tubes”, the secretariat of which is held by UNI. This European Standard shall be
19、given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2006, and conflicting national standards shall be withdrawn at the latest by April 2006. This European Standard differs from ISO 2938, Hollow bars for machining. Another part
20、 of EN 10294 in course of preparation is: Part 2: Stainless steels. Other European Standard series covering tubes for mechanical and general engineering purposes are: EN 10296, Welded steel tubes for mechanical and general engineering purposes, EN 10297, Seamless steel tubes for mechanical and gener
21、al engineering purposes. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, I
22、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 10294-1:2005 (E) 5 1 Scope This part of EN 10294 specifies the technical delivery conditions for seamless steel hollow bars intended for t
23、he manufacture of engineering components by machining. Machinability requirements are defined and a list of hollow bar size codes is given with the related dimensions achievable after machining when centring on the outside diameter. NOTE Dimensional requirements for other products, for example, appl
24、ying when centring on the inside diameter may be agreed between purchaser and manufacturer at the time of enquiry and order (see Options 3 and 4). 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the
25、 edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature. EN 10020:2000, Definition and classification of grades of steel. EN 10021:19
26、93, General technical delivery requirements for steel and iron products. EN 10045-1, Metallic materials Charpy impact test Part 1: Test method. EN 10052:1993, Vocabulary of heat treatment terms for ferrous products. EN 10168, Steel products Inspection documents List of information and description. E
27、N 10204, Metallic products Types of inspection documents. EN 10266:2003, Steel tubes, fittings and structural hollow sections Symbols and definitions of terms for use in product standards. EN ISO 377, Steel and steel products Location and preparation of samples and test pieces for mechanical testing
28、 (ISO 377:1997). EN ISO 2566-1, Steel Conversion of elongation values Part 1: Carbon and low alloy steels (ISO 2566-1:1984). ISO 3685, Tool-life testing with single-point turning tools. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10020:20
29、00, EN 10021:1993, EN 10052:1993 and EN 10266:2003 and the following apply. 3.1 hollow bar circular long product made by a seamless tube manufacturing process or by drilling a bore into a rolled or forged bar These products are characterized by special dimensions and material properties which confer
30、 machinability, suitability for heat treatment and surface condition suitable for final machining of the component EN 10294-1:2005 (E) 6 3.2 centering on outside diameter first chucking is made on the outside diameter and machining is performed on the outside surface and/or on the inside surface 3.3
31、 centering on the inside diameter first chucking is made on the inside diameter and machining is performed on the outside surface and/or on the inside surface 3.4 normalizing forming rolling process in which the final deformation is carried out in a certain temperature range leading to a material co
32、ndition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing NOTE When throughout this European Standard the term tube is used, it is synonymous to hollow bar. 4 Symbols In addition to (or deviating from) the symb
33、ols defined in EN 10266:2003 the following symbols apply: CS Cutting speed, in metres per minute DeMaximum achievable outside diameter when centring on the outside diameter; in millimetres DieMinimum achievable inside diameter when centring on the outside diameter, in millimetres DdManufacturers spe
34、cific outside diameter of the delivered product, in millimetres TdManufacturers specific wall thickness of the delivered product, in millimetres T0,3Time to obtain a 0,3 mm tool wear, in minutes TNNominal wall thickness, calculated as the half difference between the maximum achievable outside diamet
35、er Deand the minimum achievable inside diameter Die, in millimetres5 Classification and designation 5.1 Classification In accordance with the classification system in EN 10020, all steel grades except E590K2 are non-alloy quality steels; the steel grade E590K2 is a non-alloy special steel. 5.2 Desig
36、nation For tubes covered by this part of EN 10294 the steel designation consists of: number of this part of this European standard (EN 10294-1); plus either: steel name in accordance with EN 10027-1; EN 10294-1:2005 (E) 7 or steel number in accordance with EN 10027-2. The steel name is defined by: c
37、apital letter E for engineering purposes; indication of the specified minimum yield strength for thicknesses 16 mm, expressed in MPa. 6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order:
38、 a) quantity (mass or total length or number); b) term “hollow bar“; c) hollow bar size code; d) reference to this European Standard; e) steel grade (steel name or steel number); f) mechanical properties for tubes with wall thickness TNgreater than 50 mm. 6.2 Options A number of options are specifie
39、d in this European Standard and these are listed below. In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the hollow bars shall be supplied in accordance with the basic specification (see 6.1). 1) supply of machinability data
40、 to the purchaser (see 8.4); 2) special criteria for surface condition (see 8.5); 3) clean turned sizes when centring on the inside diameter(see 8.8.3); 4) exact lengths (see 8.8.4); 5) inspection document 3.2 (see 9.2.1); 6) temporary corrosion protection (see clause 13). 6.3 Example of an order 50
41、 t of hollow bars in accordance with EN 10294-1, hollow bar size code 9065, made of steel grade E470: 50 t hollow bars 9065 EN 10294-1 E470 EN 10294-1:2005 (E) 8 7 Manufacturing process 7.1 Steelmaking process The steels covered by this European Standard are characterized by their suitability for ma
42、chining (see 8.4). The steelmaking process is left at the discretion of the manufacturer provided all requirements defined in clause 8 can be fulfilled with the material produced. 7.2 Deoxidation process Steels shall be fully killed. 7.3 Tube manufacture and delivery conditions The products shall be
43、 manufactured by a seamless process or by machining from round bars. At the discretion of the manufacturer the tubes may be hot finished or cold finished before any heat treatment in accordance with Table 1 is applied. Cold finished products in grades E355 and E470 shall subsequently be either stres
44、s relieved or annealed or normalized. The method is left at the discretion of the manufacturer. The delivery conditions are given in Table 1. Table 1 Delivery condition Steel name Delivery condition aE355 No heat treatment required E355J2 Normalized or normalizing-formed E470 No heat treatment requi
45、red E420J2 Normalized or normalizing-formed E590K2 Quenched + tempered aSee requirements for cold finished products in 7.3 8 Requirements 8.1 General The hollow bars, when supplied in a delivery condition according to 7.3 and inspected in accordance with clauses 9, 10 and 11, shall comply with the r
46、equirements of this part of EN 10294. In addition, the general technical delivery conditions specified in EN 10021 shall apply. 8.2 Chemical composition The cast analysis reported by the steel producer shall apply and conform to the requirements of Table 2. In case of dispute the permissible deviati
47、ons of a product analysis from the limits of cast analysis specified in Table 2 are given in table 3. NOTE When welding products produced from hollow bars according to this European Standard, account should be taken of the fact that the behaviour of the steel during and after welding is dependent no
48、t only on the steel, but also on the material thickness and the conditions of preparing for and carrying out welding. EN 10294-1:2005 (E) 9 Table 2 Chemical composition (castanalysis) ain %bymassSteel grade Csi MnSAlVcNameNumberminmaxminmaxminmax P maxmin maxCrmaxMomaxNimaxmin maxCumaxN MaxNbbmaxTib
49、maxmin max E355d1.0580- 0,22- 0,55- 1,600,030 0,0150,050 - - - - - - - - -E355J21.0592- 0,22- 0,55- 1,600,030 0,0150,050 0,300,080,300,0100,060 0,300,020 0,050,05- 0,10E420J21.05990,160,220,100,501,301,700,030 0,0150,050 0,300,080,400,010- 0,300,020 0,070,050,08 0,15E4701.05360,160,220,100,501,301,700,030 0,0150,050 - - - 0,010- -0,020 0,07- 0,08 0,15E590K21.06440,160,220,100,501,301,700,030 0,0150,050 0,300,080,400,010- 0,300,020 0,070,050,08 0,15aElements not included in this table
