oSIST prEN 12166:2022
(Main)Copper and copper alloys - Wire for general purposes
Copper and copper alloys - Wire for general purposes
This European Standard specifies the composition, property requirements and dimensional tolerances for copper alloy wire, finally produced by drawing, rolling or extruding, intended for general purposes, spring and fastener manufacturing applications.
The sampling procedures and the methods of test for verification of conformity to the requirements of this European Standard are also specified.
Kupfer und Kupferlegierungen - Drähte zur allgemeinen Verwendung
Dieses Dokument legt die Zusammensetzung, die Anforderungen an die Eigenschaften und die Grenzabmaße für durch Ziehen, Walzen oder Pressen endgefertigte Drähte aus Kupferlegierungen zur allgemeinen Verwen
dung und zur Herstellung von Federn und Verbindungselementen fest.
Der Ablauf der Probenahme und die Prüfverfahren zur Feststellung der Übereinstimmung mit den Anforde
rungen dieses Dokuments sind ebenfalls festgelegt
Cuivre et alliages de cuivre - Fils pour usages généraux
Le présent document spécifie la composition, les exigences de propriétés et les tolérances dimensionnelles des fils en alliage de cuivre, fabriqués par étirage, laminage ou filage, destinés à des usages généraux, des applications de fabrication de ressorts et de fixations.
Les modes opératoires d’échantillonnage et les méthodes d’essai pour la vérification de la conformité aux exigences du présent document sont également spécifiés.
Baker in bakrove zlitine - Žica za splošno uporabo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 12166:2022
01-oktober-2022
Baker in bakrove zlitine - Žica za splošno uporabo
Copper and copper alloys - Wire for general purposes
Kupfer und Kupferlegierungen - Drähte zur allgemeinen Verwendung
Cuivre et alliages de cuivre - Fils pour usages généraux
Ta slovenski standard je istoveten z: prEN 12166
ICS:
77.150.30 Bakreni izdelki Copper products
oSIST prEN 12166:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12166:2022
DRAFT
EUROPEAN STANDARD
prEN 12166
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2022
ICS 77.150.30 Will supersede EN 12166:2016
English Version
Copper and copper alloys - Wire for general purposes
Cuivre et alliages de cuivre - Fils pour usages généraux Kupfer und Kupferlegierungen - Drähte zur
allgemeinen Verwendung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 133.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN 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 official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12166:2022 E
worldwide for CEN national Members.
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Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Designation. 8
4.1 Material . 8
4.1.1 General . 8
4.1.2 Symbol . 8
4.1.3 Number . 8
4.2 Material condition . 8
4.3 Product . 8
5 Ordering information .10
6 Requirements .12
6.1 Composition .12
6.2 Mechanical properties .12
6.3 Grain size .12
6.4 Dimensions and tolerances .12
6.4.1 Diameter or width across-flats .12
6.4.2 Shape tolerances .12
6.4.3 Corner and edge geometry (wire with square and rectangular cross-section only) .12
6.5 Joins .13
6.6 Surface quality.13
6.7 Internal inclusion .13
7 Sampling .14
7.1 General .14
7.2 Analysis .14
7.3 Tensile, hardness and grain size tests .14
8 Test methods .14
8.1 Analysis .14
8.2 Tensile test .14
8.3 Hardness test .15
8.4 Estimation of average grain size .15
8.5 Retests .15
8.6 Rounding of results .15
9 Declaration of conformity and inspection documentation .16
9.1 Declaration of conformity .16
9.2 Inspection documentation .16
10 Marking, packaging, labelling .16
Annex A (informative) Position of wire cross-section within a coil, reel, spool or drum .35
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Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU (Pressure equipment Directive) aimed to be
covered . 37
Bibliography . 38
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European foreword
This document (prEN 12166:2022) has been prepared by Technical Committee CEN/TC 133 “Copper and
copper alloys”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12166:2016.
In comparison with EN 12166:2016, the following significant technical changes were made:
a) Modified the definition of diameter or width across-flats at 6.4.1;
b) Modified 6.4.2 with the introduction of 6.4.2.1 Round wire and 6.4.2.2 Wire with square or regular
cross-section;
c) Introduction in 6.6 of eddy current test parameters;
d) Introduction of 6.7 Internal inclusion;
e) CuPb1P (CW113C) added in Table 1and Table 7;
f) CuSn5 (CW451K) added in Table 3 and Table 9;
g) Added a new alloy CuZn36Si1P (CW726R) in Table 6 and Table 12;
h) Introduction in the chemical composition Tables of a footnote to explain the meaning of elements for
which no upper and lower limits are defined;
i) Chemical composition of CuZn39Pb3 (CW614N) and CuZn40Pb2 (CW617N) modified in Table 5;
j) Added a new alloy CuZn40Pb1 (CW627N) in Table 5 and Table 11;
k) Table 19 added;
l) Annex ZA added.
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 machining purposes;
— EN 12165, Copper and copper alloys — Wrought and unwrought forging stock;
— EN 12167, Copper and copper alloys — Profiles and bars for general purposes;
— EN 12168, Copper and copper alloys — Hollow rod for free machining 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;
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— EN 13605, Copper and copper alloys — Copper profiles and profiled wire for electrical purposes.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
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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
CuZn36Si1P (CW726R) 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 either free of
charge or under reasonable and non-discriminatory terms and conditions with applicants throughout the
world. In this respect, the statement of the holder of this patent right is registered with CEN.
Information may be obtained from:
— For CuZn36Si1P (CW726R) information may be obtained from:
Luvata Oy
Kuparitie 5
28330 Pori
FINLAND
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 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 composition
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 major 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.
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1 Scope
This document specifies the composition, property requirements and dimensional tolerances for copper
alloy wire, finally produced by drawing, rolling or extruding, intended for general purposes, spring and
fastener manufacturing applications.
The sampling procedures and the methods of test for verification of conformity to the requirements of
this document are also specified.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1173:2008, Copper and copper alloys - Material condition designation
EN 1412:2016, Copper and copper alloys - European numbering system
EN 10204:2004, Metallic products - Types of inspection documents
EN 17263:2019, Copper and copper alloys - Eddy current testing on the outer surface of rods, bars, hollow
rods and wires for the detection of defects by encircling test coil
EN ISO 2624:1995, Copper and copper alloys - Estimation of average grain size (ISO 2624:1990)
EN ISO 6507-1:2018, Metallic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1:2018)
EN ISO 6892-1:2019, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO
6892-1:2019)
ISO 1190-1:1982, Copper and copper alloys — Code of designation — Part 1: Designation of materials
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
wire
wound product of uniform cross-section along its whole length
Note 1 to entry: Rectangles may have round or sharp corners.
3.2
deviation from circular form
difference between the maximum and the minimum diameters measured at any one cross-section of a
round product
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4 Designation
4.1 Material
4.1.1 General
The material is designated either by symbol or by number (see Tables 1 to 6).
4.1.2 Symbol
The material symbol designation is based on the designation system given in ISO 1190-1:1982.
NOTE Although material symbol designations used in this standard might be the same as those in other
standards using the designation system given in ISO 1190-1:1982, the detailed composition requirements are not
necessarily the same.
4.1.3 Number
The material number designation is in accordance with the system given in EN 1412:2016.
4.2 Material condition
For the purposes of this document, the following designations, which are in accordance with the system
given in EN 1173:2008, apply for the material condition:
M material condition for the product as manufactured, without specified mechanical
properties;
R. material condition designated by the minimum value of tensile strength requirement for
the product with mandatory tensile property requirements;
H. material condition designated by the minimum value of Vickers hardness requirement for
the product with mandatory hardness requirements;
S (suffix) material condition for a product which is stress relieved.
G. material condition designated by the mid-range value of grain size requirement for the
product with mandatory grain size requirements (Table 13).
NOTE The G. material condition is normally applicable only to round wires in the soft material condition made
from alloys given in Tables 3, 4 and non-leaded alloys given in Table 2.
Exact conversion between material conditions designated R., H. and G. is not possible.
Except when the suffix S is used, material condition is designated by only one of the above designations.
4.3 Product
The product designation provides a standardized pattern of designation from which a rapid and
unequivocal description of a product can be conveyed in communication. It provides mutual
comprehension at the international level with regard to products which meet the requirements of the
relevant European Standard.
The product designation is no substitute for the full content of the document.
The product designation for products to this standard shall consist of:
— denomination (Wire);
— number of this document (EN 12166);
— material designation, either symbol or number (see Tables 1 to 6);
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— DW for compliance in the chemical composition according to the 4 MS Common Composition List.
This information is mandatory in the case in which the product is used for drinking water
applications according to the 4 MS Common Composition List and not to be given in other cases;
— material condition designation (see 4.2 and Tables 7 to 13);
— cross-sectional shape (the following designations shall be used as appropriate: RND for round, SQR
for square, RCT for rectangular, HEX for hexagonal, OCT for octagonal, PFL for profile);
— nominal cross-sectional dimension(s) (or the number of the profile or a fully dimensioned and
toleranced drawing);
— tolerance class for round, square or polygonal wire, (see Tables 14 and 15);
— for square, rectangular or polygonal wire, the corner shape (the following designations shall be used
as appropriate: SH for sharp, RD for rounded), (see Table 17).
The derivation of a product designation is shown in the following examples.
EXAMPLE 1 Wire conforming to this document, in material designated either CuZn40Pb2 or CW617N, for
standard applications in material condition H115, rectangular, nominal cross-sectional dimensions
6,0 mm × 5,0 mm, with sharp corners, will be designated as follows:
EXAMPLE 2 Wire conforming to this document, in material designated either CuZn40Pb2 or CW617N, for
drinking water applications according to the 4 MS Common Composition List, in material condition H115,
rectangular, nominal cross-sectional dimensions 6,0 mm × 5,0 mm, with sharp corners, will be designated as
follows:
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EXAMPLE 3 Wire conforming to this document, in material designated either CuZn39Pb3 or CW614N, for
standard applications in material condition R430, round, nominal diameter 6,0 mm, tolerance class B, will be
designated as follows:
Wire EN 12166 — CuZn39Pb3 — R430 — RND6,0B
or
Wire EN 12166 — CW614N — R430 — RND6,0B
5 Ordering information
In order to facilitate the enquiry, order and confirmation of order procedures between the purchaser and
the supplier, the purchaser shall state on his enquiry and order the following information:
a) mass of product required;
b) denomination (Wire);
c) number of this document (EN 12166);
d) material designation (see Tables 1 to 6);
e) material condition designation (see 4.2 and Tables 7 to 13) if other than M;
f) DW for compliance in the chemical composition according to the 4 MS Common Composition List.
This information is mandatory in the case in which the product is used for drinking water
applications according to the 4 MS Common Composition List and not to be given in other cases;
g) cross-sectional shape;
h) nominal cross-sectional dimension(s) (diameter or width across-flats);
i) for round, square and regular polygonal wire, the tolerance class required, unless the tolerance class
shall be left to the discretion of the supplier (see Tables 14 and 15); for profiles, the tolerances
required (or a drawing with dimensions and tolerances);
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j) for square or rectangular wire, whether 'sharp' or 'rounded' corners are required, unless the corner
radii shall be left to the discretion of the supplier (see Table 17);
It is recommended that the product designation, as described in 4.3, is used for items b) to j).
In addition, the purchaser shall also state on the enquiry and order any of the following, if required:
k) for profiles, if the shape is such that the position of the cross-section within the coil, reel, spool or
drum is of importance to the purchaser, this should be stated on the drawing (see Annex A for
illustration);
l) for profiles, whether mechanical properties are required; if so, the method of test and the level of
properties shall be agreed between the purchaser and the supplier;
m) whether the products shall be supplied in a thermally stress relieved material condition;
n) whether special surface quality is required (see 6.6);
o) whether surface quality test is required (see 6.6) and the class;
p) whether a declaration of conformity is required (see 9.1);
q) whether an inspection document is required, and if so, which type (see 9.2);
r) whether there are any special requirements for marking, labelling or packaging including, if
necessary, any limitation on dimensions or mass of coils, spools, reels or drums (see Clause 10).
EXAMPLE 1 Ordering details for 1 000 kg wire for general purposes conforming to EN 12166, in material
designated either CuZn39Pb3 or CW614N, in material condition H115, rectangular, nominal cross-sectional
dimensions 6,0 mm × 5,0 mm, with sharp corners, in 25 kg coils:
1 000 kg Wire EN 12166 — CuZn39Pb3 — H115 — RCT 6,0 × 5,0 — SH
— 25 kg coils
or
1 000 kg Wire EN 12166 — CW614N — H115 — RCT 6,0 × 5,0 — SH
— 25 kg coils
EXAMPLE 2 Ordering details for 5 000 kg wire for general purposes conforming to EN 12166, in material
designated either CuZn40Pb2 or CW617N, for drinking water application according to the 4 MS Common
Composition List, in material condition R430, round, nominal diameter 6,0 mm, tolerance class B, on 1 000 kg
spools:
5 000 kg Wire EN 12166 — CuZn40Pb2 — DW — R430 — RND6,0B
— 1 000 kg spools
or
5 000 kg Wire EN 12166 — CW617N — DW — R430 — RND6,0B
— 1 000 kg spools
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6 Requirements
6.1 Composition
The composition shall conform to the requirements for the appropriate material given in Tables 1 to 6.
Due to developing legislation, specific applications (see 4.3) may require restrictions in the chemical
composition. In this case the limitations shall be specified in the ordering information [see Clause 5 list
entry f)].
6.2 Mechanical properties
The tensile properties of R. material condition or the hardness properties of H. material condition shall
conform to the appropriate requirements given in Tables 7 to 12. The tests shall be carried out in
accordance with 8.2 or 8.3.
6.3 Grain size
The grain size of G. material condition shall conform to the appropriate ranges in Table 13. The tests
shall be carried out in accordance with 8.4.
6.4 Dimensions and tolerances
6.4.1 Diameter or width across-flats
Diameter or width across-flats at any point shall conform to the tolerances given in Tables 14 to 16.
6.4.2 Shape tolerances
6.4.2.1 Round wire
The deviation from circular form (see 3.2) of round wire less than 3,0 mm diameter, shall not exceed half
the range of the tolerance on diameter given in Table 14. The deviation from circular form of round wire
equal to or greater than 3,0 mm diameter, shall not exceed the range of the tolerance on diameter given
in Table 14.
6.4.2.2 Wire with square or regular cross-section (see above)
The width across-flats, measured at the centre of the faces at any one cross-section, shall not differ by
more than half the range of the tolerance given for the size in Table 15.
6.4.3 Corner and edge geometry (wire with square and rectangular cross-section only)
The radii of the corners of wires shall conform to the requirements given in Table 17 for sharp or rounded
corners.
For wires with the minimum width across-flats less than 3 mm the corners shall be calculated according
to Figure 1. For wires with both widths across-flats equal to or greater than 3 mm, except in cases of
dispute, the corners shall be measured directly, either by use of a gauge or an optical projector. In cases
of dispute the method by optical projector shall be used.
Wire edges shall be smooth along the product length without discontinuity.
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For sizes below 3 mm, the corner radius c is calculated from the
formula:
cc+
12
c=
2
and may fall anywhere between fully circular 'a' and a chamfer 'b'.
Figure 1 — Calculation of corner radii
6.5 Joins
Welds made before the final drawing sequence are permissible. Joins made after the final drawing
sequence are not permitted unless there has been agreement between the purchaser and the supplier on
the method of performing and marking these joins.
6.6 Surface quality
The surfaces shall be clean and smooth. The wires may have a superficial film of drawing lubricant or, if
annealed or thermally stress relieved, a superficial, dull, iridescent oxide film, securely adherent on the
surfaces.
Discontinuous irregularities on the surfaces of the wires are permitted if they are within the dimensional
tolerances.
Since surface discontinuities (cracks, overlapping, scale, isolated pores, pits, grooves, etc.) cannot be
completely avoided during manufacturing (hot and cold formation, heat treatments, handling and
storage) and since they are retained when drawing, agreements shall be made regarding surface quality.
If eddy current test is requested, the test method given in EN 17263:2019 shall be applied using reference
standard according to Table 19 for round wire. For polygonal wire the reference standard shall be agreed
between purchaser and supplier.
The sensitivity is to be set in such a way that the smallest signal of the borehole(s) just exceeds the
response threshold (acceptance level).
Special requirements (e.g. pickling, degreasing, etc.) relating to the surface quality shall be agreed
between the purchaser and the supplier [see Clause 5, list entry n)].
6.7 Internal inclusion
Freedom of internal inclusions cannot be ensured in any copper alloys.
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7 Sampling
7.1 General
When required (e.g. if necessary in accordance with specified procedures of a supplier's quality system,
or when the purchaser requests inspection documents with test results, or for use in cases of dispute), an
inspection lot shall be sampled in accordance with 7.2 and 7.3.
7.2 Analysis
The sampling rate shall be in accordance with Table 18. A test sample, depending on the analytical
technique to be employed, shall be prepared from each sampling unit and used for the determination of
the composition.
When preparing the test sample, care should be taken to avoid contaminating or overheating the test
sample. Carbide tipped tools are recommended; steel tools, if used, should be made of magnetic material
to assist in the subsequent removal of extraneous iron. If the test samples are in finely divided form (e.g.
drillings, millings), they should be treated carefully with a strong magnet to remove any particles of iron
introduced during preparation.
In cases of dispute concerning the results of analysis, the full procedure given in ISO 1811-2 should be
followed.
Results may be used from analyses carr
...
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