1、BS EN 12168:2016Copper and copper alloys Hollow rod for free machiningpurposesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 12168:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12168:2016. It supersedes BS EN 12168:
2、2011 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee NFE/34, Copper and copper alloys.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provi
3、sions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 91261 0 ICS 77.150.30 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publis
4、hed under the authority of the Standards Policy and Strategy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDate Text affectedBS EN 12168:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12168 July 2016 ICS 77.150.30 Supersedes EN 12168:2011English Version Copper and
5、 copper alloys - Hollow rod for free machining purposes Cuivre et alliages de cuivre - 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/CENELE
6、C Internal Regulations which stipulate the conditions for giving this European 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
7、to any CEN member. This European Standard exists in three official versions (English, 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 offic
8、ial versions. CEN members are the national standards bodies of 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,
9、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, 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 ex
10、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12168:2016 EBS EN 12168:2016EN 12168:2016 (E) 2 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 G
11、eneral 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 Requirements 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 wid
12、th 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 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 tes
13、ts . 18 7.4 Dezincification resistance and stress corrosion resistance tests . 18 8 Test methods . 18 8.1 Analysis 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.
14、3 Hardness test . 19 BS EN 12168:2016EN 12168:2016 (E) 3 8.4 Dezincification resistance test . 19 8.5 Stress 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
15、Declaration of conformity and inspection documentation . 20 9.1 Declaration of conformity 20 9.2 Inspection 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 Tabl
16、es Table 1 Composition of low alloyed copper alloys 21 Table 2 Composition of copper-zinc alloys. 22 Table 3 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
17、of copper-zinc alloys . 28 Table 7 Mechanical properties of copper-zinc-lead alloys . 31 Table 8 Mechanical 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
18、bore . 38 Table 12 Tolerances on eccentricity . 39 Table 13 Tolerances on straightness of hollow rod 39 Table 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, hexag
19、onal or octagonal external shape . 40 Table 17 Sampling rate 40 BS EN 12168:2016EN 12168:2016 (E)BS EN 12168:2016EN 12168:2016 (E) 2 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
20、.2 Symbol . 9 4.1.3 Number . 9 4.2 Material condition 9 4.3 Product 9 5 Ordering information . 13 6 Requirements 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-fl
21、ats 15 6.5.2 Tolerance on wall thickness . 15 6.5.3 Eccentricity . 16 6.5.4 Shape tolerances 16 6.5.5 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
22、Dezincification resistance and stress corrosion resistance tests . 18 8 Test methods . 18 8.1 Analysis 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 t
23、est . 19 BS EN 12168:2016EN 12168:2016 (E) 3 8.4 Dezincification resistance test . 19 8.5 Stress 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
24、of conformity and inspection documentation . 20 9.1 Declaration of conformity 20 9.2 Inspection 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 C
25、omposition of low alloyed copper alloys 21 Table 2 Composition of copper-zinc alloys. 22 Table 3 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-zi
26、nc alloys . 28 Table 7 Mechanical properties of copper-zinc-lead alloys . 31 Table 8 Mechanical 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 Ta
27、ble 12 Tolerances on eccentricity . 39 Table 13 Tolerances on straightness of hollow rod 39 Table 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 octa
28、gonal external shape . 40 Table 17 Sampling rate 40 BS EN 12168:2016EN 12168:2016 (E)BS EN 12168:2016EN 12168:2016 (E) 4 European 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 Europ
29、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, 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 elem
30、ents of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying 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 draw
31、n products, forgings and scrap” to revise the following standard: EN 12168:2011, Copper and copper alloys Hollow rod for free 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 specif
32、ied as follows: EN 12163, Copper and copper alloys Rod for general purposes; EN 12164, Copper and copper alloys Rod for free 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
33、copper alloys Profiles and bars for general purposes; EN 13601, Copper and copper alloys Copper rod, bar and wire for general 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 profi
34、les and profiled wire for electrical purposes. In comparison with EN 12168:2011, the following significant technical changes were made: a) addition of four new materials: CuZn37Pb1 (CW605N), CuZn35Pb1,5AlAs (CW625N), CuZn33Pb1,5AlAs (CW626N) and CuZn33Pb1AlSiAs (CW725R) due to the market requirement
35、s on restriction of lead and modification of the chemical composition for CuZn39Pb1 (CW611N); b) introduction of an optional 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 drinki
36、ng water; c) requirements and test methods for resistance of dezincification modified; d) provisions for surface quality added; BS EN 12168:2016EN 12168:2016 (E) 5 e) mechanical properties for CuZn21Si3P (CW724R) modified. According to the CEN-CENELEC Internal Regulations, the national standards org
37、anisations 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
38、, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12168:2016EN 12168:2016 (E)BS EN 12168:2016EN 12168:2016 (E) 4 European foreword This document (EN 12168:2016) has been prepared by Technical Committee CEN/TC
39、 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, at the latest by January 2017, and conflicting national standards shall be withdrawn at the
40、 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 any or all such patent rights. This document supersedes EN 12168:2011. Within its programme
41、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 free machining purposes. This document is one of a series of European Standards for the copper
42、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 machining purposes; EN 12165, Copper and copper alloys Wrought and unwrought forging stock;
43、 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 general electrical purposes; EN 13602, Copper and copper alloys Drawn, round copper wire for the m
44、anufacture 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 were made: a) addition of four new materials: CuZn37Pb1 (CW605N), CuZn35Pb1,5AlAs (CW625N),
45、 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 procedure how to refer to restrictions to the chemical composition imposed by the 4 MS Comm
46、on 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 added; BS EN 12168:2016EN 12168:2016 (E) 5 e) mechanical properties for CuZn21Si3P (CW724R) mod
47、ified. 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, Fran
48、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12168:2016EN 12168:2016 (E)BS EN 12168:2016EN 12168:2016 (E) 6 Introductio
49、n 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 (CW725R) 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 unde
