1、November 2016 English price group 15No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.150.30!%q-“2587810www.din.de
2、DIN EN 12168Copper and copper alloys Hollow rod for free machining purposes;English version EN 12168:2016,English translation of DIN EN 12168:2016-11Kupfer und Kupferlegierungen Hohlstangen fr die spanende Bearbeitung;Englische Fassung EN 12168:2016,Englische bersetzung von DIN EN 12168:2016-11Cuivr
3、e et alliages de cuivre Barres creuses pour dcolletage;Version anglaise EN 12168:2016,Traduction anglaise de DIN EN 12168:2016-11SupersedesDIN EN 12168:201108www.beuth.deDocument comprises 43 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered a
4、uthoritative.11.16 DIN EN 12168:2016-11 2 A comma is used as the decimal marker. National foreword This document (EN 12168:2016) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DI
5、N-Normenausschuss Nichteisenmetalle (DIN Standards Committee Nonferrous Metals), Working Committee NA 066-02-04 AA Strangpress- und Zieherzeugnisse. Amendments This standard differs from DIN EN 12168:2011-08 as follows: a) due to the market requirements for the restriction of lead content and modifi
6、cation of the chemical composition of alloy CuZn39Pb1 (CW611N), four new materials have been added: CuZn37Pb1 (CW605N), CuZn35Pb1,5AlAs (CW625N), CuZn33Pb1,5AlAs (CW626N) and CuZn33Pb1AlSiAs (CW725R); b) an optional procedure has been included for referring to restrictions to the chemical compositio
7、n imposed by the 4 MS Common Composition List for materials used for products accepted for contact with drinking water; c) the requirements and test methods for the resistance to dezincification have been modified; d) specifications for surface quality have been added; e) the mechanical properties f
8、or alloy CuZn21Si3P (CW724R) have been amended. Previous editions DIN 1714: 1936-02 DIN 1775: 1936-06 DIN 17671: 1957-04 DIN 17671-1: 1961-08, 1969-02, 1974-06, 1983-12 DIN 17671-2: 1961-08, 1969-06 DIN 17674-1: 1963-01, 1969-02, 1974-06, 1983-12 DIN 17674-2: 1963-06 DIN 17674-4: 1963-06 DIN 17674-5
9、: 1963-06 DIN 59752: 1973-11 DIN 59750: 1974-06 DIN EN 12168: 1998-04, 2000-09, 2011-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12168 July 2016 ICS 77.150.30 Supersedes EN 12168:2011English Version Copper and copper alloys - Hollow rod for free machining purposes Cuivre et alliages de c
10、uivre - Barres creuses pour dcolletage Kupfer und Kupferlegierungen - Hohlstangen fr die spanende Bearbeitung This European Standard was approved by CEN on 9 April 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
11、Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (En
12、glish, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium
13、, 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, Slovakia, Slovenia, Spain, Sweden, Switzerla
14、nd, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Mem
15、bers. Ref. No. EN 12168:2016 E2 Contents Page European foreword . 4 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 7 4 Designations 9 4.1 Material . 9 4.1.1 General 9 4.1.2 Symbol . 9 4.1.3 Number . 9 4.2 Material condition 9 4.3 Product 9 5 Ordering information . 13 6 R
16、equirements 15 6.1 Composition . 15 6.2 Mechanical properties 15 6.3 Resistance to dezincification . 15 6.4 Residual stress level 15 6.5 Dimensions and tolerances 15 6.5.1 Diameter or width across-flats 15 6.5.2 Tolerance on wall thickness . 15 6.5.3 Eccentricity . 16 6.5.4 Shape tolerances 16 6.5.5
17、 Straightness 16 6.5.6 Length . 16 6.5.7 Corner radii 16 6.5.8 Twist of polygonal hollow rod . 16 6.6 Surface quality. 17 7 Sampling 17 7.1 General . 17 7.2 Analysis 17 7.3 Mechanical tests . 18 7.4 Dezincification resistance and stress corrosion resistance tests . 18 8 Test methods . 18 8.1 Analysi
18、s 18 8.2 Tensile test . 18 8.2.1 General . 18 8.2.2 Location of test pieces 18 8.2.3 Shape and size of test pieces 19 8.2.4 Procedure for testing 19 8.2.5 Determination of results . 19 8.3 Hardness test . 19 EN 12168:2016 (E) DIN EN 12168:2016-11 3 8.4 Dezincification resistance test . 19 8.5 Stress
19、 corrosion resistance test 19 8.6 Retests 19 8.6.1 Analysis, tensile, hardness and dezincification resistance tests . 19 8.6.2 Stress corrosion resistance test 20 8.7 Rounding of results 20 9 Declaration of conformity and inspection documentation . 20 9.1 Declaration of conformity 20 9.2 Inspection
20、documentation 20 10 Marking, packaging, labelling 20 Bibliography . 41 Figures Figure 1 Examples of hollow rod cross-sections .8 Figure 2 Measurement of twist of polygonal hollow rod . 17 Tables Table 1 Composition of low alloyed copper alloys 21 Table 2 Composition of copper-zinc alloys. 22 Table 3
21、 Composition of copper-zinc-lead alloys 23 Table 4 Composition of complex copper-zinc alloys . 26 Table 5 Mechanical properties of low alloyed copper alloys . 27 Table 6 Mechanical properties of copper-zinc alloys . 28 Table 7 Mechanical properties of copper-zinc-lead alloys . 31 Table 8 Mechanical
22、properties of complex copper-zinc alloys . 34 Table 9 Tolerances on external diameter or width across-flats. 38 Table 10 Tolerances on wall thickness 38 Table 11 Tolerances on diameter of the bore . 38 Table 12 Tolerances on eccentricity . 39 Table 13 Tolerances on straightness of hollow rod 39 Tabl
23、e 14 Tolerances on length of hollow rod 39 Table 15 Corner radii for hollow rod with square, hexagonal or octagonal external shape . 39 Table 16 Maximum twist for hollow rod with square, hexagonal or octagonal external shape . 40 Table 17 Sampling rate 40 EN 12168:2016 (E) DIN EN 12168:2016-11 4 Eur
24、opean foreword This document (EN 12168:2016) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, 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 endorsement,
25、 at the latest by January 2017, and conflicting national standards shall be withdrawn at the latest by January 2017. 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 identifying
26、any or all such patent rights. This document supersedes EN 12168:2011. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 4 “Extruded and drawn products, forgings and scrap” to revise the following standard: EN 12168:2011, Copper and copper alloys Hollow rod for fre
27、e machining purposes. This document is one of a series of European Standards for the copper and copper alloy products rod, wire, profile and forgings. Other products are specified as follows: EN 12163, Copper and copper alloys Rod for general purposes; EN 12164, Copper and copper alloys Rod for free
28、 machining purposes; EN 12165, Copper and copper alloys Wrought and unwrought forging stock; EN 12166, Copper and copper alloys Wire for general purposes; EN 12167, Copper and copper alloys Profiles and bars for general purposes; EN 13601, Copper and copper alloys Copper rod, bar and wire for genera
29、l electrical purposes; EN 13602, Copper and copper alloys Drawn, round copper wire for the manufacture of electrical conductors; EN 13605, Copper and copper alloys Copper profiles and profiled wire for electrical purposes. In comparison with EN 12168:2011, the following significant technical changes
30、 were made: a) addition of four new materials: CuZn37Pb1 (CW605N), CuZn35Pb1,5AlAs (CW625N), CuZn33Pb1,5AlAs (CW626N) and CuZn33Pb1AlSiAs (CW725R) due to the market requirements on restriction of lead and modification of the chemical composition for CuZn39Pb1 (CW611N); b) introduction of an optional
31、 procedure how to refer to restrictions to the chemical composition imposed by the 4 MS Common Composition List for materials used for products accepted for contact with drinking water; c) requirements and test methods for resistance of dezincification modified; d) provisions for surface quality add
32、ed; EN 12168:2016 (E) DIN EN 12168:2016-11 5 e) mechanical properties for CuZn21Si3P (CW724R) modified. 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, Croati
33、a, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
34、 United Kingdom. EN 12168:2016 (E) DIN EN 12168:2016-11 6 Introduction The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent concerning the alloy CuZn21Si3P (CW724R) and CuZn33Pb1AlSiAs (CW72
35、5R) given in 6.1. CEN takes no position concerning the evidence, validity and scope of this patent right. The holder of this patent right has ensured the CEN that he is willing to negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In
36、 this respect, the statement of the holder of this patent right is registered with CEN. For CuZn21Si3P (CW724R) information may be obtained from: Wieland-Werke AG Graf Arco Strae 36 D-89079 Ulm GERMANY For CuZn33Pb1AlSiAs (CW725R) information may be obtained from: Diehl Metall Messing Heinrich-Diehl
37、-Strae 9 D-90552 Rthenbach/Pegnitz GERMANY Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. CEN shall not be held responsible for identifying any or all such patent rights. CEN and CENELEC maintain
38、 online lists of patents relevant to their standards. Users are encouraged to consult the lists for the most up to date information concerning patents (ftp:/ftp.cencenelec.eu/EN/IPR/Patents/IPRdeclaration.pdf). Due to developing legislation, the composition of a material may be restricted to the com
39、position specified in this European Standard with respect to individual uses (e.g. for the use in contact with drinking water in some Member States of the European Union). These individual restrictions are not part of this European Standard. Nevertheless, for materials for which traditional and majo
40、r uses are affected, these restrictions are indicated. The absence of an indication, however, does not imply that the material can be used in any application without any legal restriction. EN 12168:2016 (E) DIN EN 12168:2016-11 7 1 Scope This European Standard specifies the composition, property req
41、uirements and dimensional tolerances for copper alloy hollow rod, finally produced by drawing or extruding, specifically intended for free machining purposes. NOTE Hollow products having an outside diameter greater than 80 mm and/or a wall thickness less than 2 mm are specified in EN 12449. The samp
42、ling procedures, the methods of test for verification of conformity to the requirements of this European Standard, are also specified. 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
43、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1173, Copper and copper alloys - Material condition designation EN 1412, Copper and copper alloys - European numbering system EN 1655, Copper and
44、copper alloys - Declarations of conformity EN 10204, Metallic products - Types of inspection documents EN 14977, Copper and copper alloys - Detection of tensile stress - 5 % ammonia test EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1) EN ISO 6507-1, Metal
45、lic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1) EN ISO 6509-1, Corrosion of metals and alloys - Determination of dezincification resistance of copper alloys with zinc - Part 1: Test method (ISO 6509-1) EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of t
46、est at room temperature (ISO 6892-1) ISO 1190-1, Copper and copper alloys Code of designation Part 1: Designation of materials ISO 6957, Copper alloys Ammonia test for stress corrosion resistance 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.
47、1 hollow rod straight product, of uniform cross-section along its whole length with an enclosed void for which the longitudinal axes of its external contour and its internal contour, which is the boundary with the enclosed void, are coincidental EN 12168:2016 (E) DIN EN 12168:2016-11 8 Note 1 to ent
48、ry: The external and internal contours of the rod, at any cross-section, can be that of a circle, square, rectangle, hexagon, or octagon, or with slight modification of those basic shapes by inclusion of detail(s) of relatively small size to the remainder of the cross-section. Examples of hollow rod
49、 cross-sections are shown in Figure 1. Figure 1 Examples of hollow rod cross-sections 3.2 deviation from circular form difference between the maximum and the minimum outside diameters measured at any one cross-section of the product SOURCE: EN 12163:2016, 3.2, modified The definition was adapted. 3.3 eccentricity difference between the maximum and the minimum wall thickness, measured in the same cross
