1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12450:2012Copper and copper alloys Seamless, round coppercapillary tubesBS EN 12450:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of
2、EN 12450:2012. Itsupersedes BS EN 12450:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/34/1, Wrought and unwrought copper and copperalloys.A list of organizations represented on this committee can beobtained on request to its secretary.This pu
3、blication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013 ISBN 978 0 580 78115 5 ICS 23.040.15 Compliance with a British Standard cannot confer immu
4、nity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013. Amendments issued since publicationDate T e x t a f f e c t e dBS EN 12450:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12450 November 2012 I
5、CS 23.040.15; 77.150.30 Supersedes EN 12450:1999English Version Copper and copper alloys - Seamless, round copper capillary tubes Cuivre et alliages de cuivre - Tuyaux circulaires en cuivre, de faible diamtre, sans soudure Kupfer und Kupferlegierungen - Nahtlose, runde Kapillarrohre aus Kupfer This
6、European Standard was approved by CEN on 6 October 2012. 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. Up-to-date lists and bibliographical reference
7、s 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 (English, French, German). A version in any other language made by translation under the responsibility of a CEN mem
8、ber 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, Former Yugoslav Republic of Macedonia, Fr
9、ance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES
10、KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12450:2012: EBS EN 12450:2012EN 12450:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 4
11、3 Terms and definitions .44 Designations 54.1 Material .54.2 Material condition 54.3 Product .55 Ordering information .66 Requirements .76.1 Composition .76.2 Mechanical properties .76.3 Dimensions and tolerances 76.4 Tolerances on form86.5 Flow .86.6 Surface quality .87 Sampling .97.1 General 97.2
12、Analysis 97.3 Mechanical tests 98 Test methods 98.1 Analysis 98.2 Tensile test 108.3 Hardness test 108.4 Flow test 108.5 Cleanliness test. 108.6 Retests . 108.7 Rounding of results 109 Declaration of conformity and inspection documentation . 119.1 Declaration of conformity 119.2 Inspection documenta
13、tion . 1110 Marking, packaging, labelling 11Bibliography . 12Tables Table 1 Mechanical properties . 7Table 2 Tolerances on tubes in straight lengths . 8Table 3 Tolerances on flow 8Table 4 Sampling rate . 9BS EN 12450:2012EN 12450:2012 (E) 3 Foreword This document (EN 12450:2012) has been prepared by
14、 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, at the latest by May 2013, and conflicting national standards sh
15、all be withdrawn at the latest by May 2013. 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 12450:1999. In
16、 comparison with EN 12450:1999, the following significant technical changes were made: a) 6.6 “Surface quality“, has been modified; b) In 8.5 “Cleanliness test“ the text regarding the determination of lubricant residue as described in EN 723 has been added. This is one of a series of European Standa
17、rds for copper and copper alloy tubes. Other products are, or will be, specified as follows: EN 1057, Copper and copper alloys Seamless, round copper tubes for water and gas in sanitary and heating applications EN 12449, Copper and copper alloys Seamless, round tubes for general purposes EN 12451, C
18、opper and copper alloys Seamless, round tubes for heat exchangers EN 12452, Copper and copper alloys Rolled, finned, seamless tubes for heat exchangers EN 12735-1, Copper and copper alloys Seamless, round copper tubes for air conditioning and refrigeration Part 1: Tubes for piping systems EN 12735-2
19、, Copper and copper alloys Seamless, round copper tubes for air conditioning and refrigeration Part 2: Tubes for equipment EN 13348, Copper and copper alloys Seamless, round copper tubes for medical gases or vacuum EN 13349, Copper and copper alloys Pre-insulated copper tubes with solid covering EN
20、13600, Copper and copper alloys Seamless copper tubes for electrical purposes Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 3 “Copper tubes (installation and industrial)“ to revise the following standard: EN 12450:1999, Copper and copper alloys Seamless, round
21、copper capillary tubes. 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 o
22、f 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 United Kingdom. BS EN 12450:2012EN 12450:2012 (E) 4 1 Scope This European Stand
23、ard specifies the composition, property requirements and tolerances on dimensions and on form for seamless round copper capillary tubes for use as metering lines for liquids or gases where close controls over the smoothness and dimensions of the bore are required to ensure uniform flow characteristi
24、cs. This European Standard applies to capillary tubes in straight lengths, or in coils, in the size range up to and including 6,10 mm outside diameter and from 0,30 mm up to and including 4,45 mm inside diameter which are intended for restrictor applications. The sampling procedures and the methods
25、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 references, only the edition
26、cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1057:2006, Copper and copper alloys Seamless, round copper tubes for water and gas in sanitary and heating applications EN 1655, Copper and copper alloys Declarations of confor
27、mity EN 10204, Metallic products Types of inspection documents EN ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method (ISO 6507-1) EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1) 3 Terms and definitions For the purposes o
28、f this document, the terms and definitions given in EN 1057:2006 and the following apply. 3.1 seamless round tube hollow semi-finished product, circular in cross-section, having a uniform wall thickness, which at all stages of production has a continuous periphery 3.2 mean diameter arithmetical mean
29、 of the maximum and minimum outside diameters through the same cross-section of the tube SOURCE: EN 1057:2006, 3.5 3.3 deviation from circular form difference between the maximum and minimum outside diameters measured at any one cross-section of the tube SOURCE: EN 1057:2006, 3.6 3.4 capillary tube
30、tube of small inside diameter with an inside surface of high quality and conforming to close diameter tolerances Note 1 to entry: It is subject to special tests to ensure precision and uniformity of bore, having been specially cleaned. BS EN 12450:2012EN 12450:2012 (E) 5 4 Designations 4.1 Material
31、4.1.1 General The material is designated either by symbol or number (see 6.1). 4.1.2 Symbol The material symbol designation is based on the designation system given in ISO 1190-1. NOTE Although material symbol designations used in this standard might be the same as those in other standards using the
32、 designation system given in ISO 1190-1, 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. 4.2 Material condition For the purposes of this standard, the following designations, which are
33、 in accordance with the system given in EN 1173, apply for the material condition: R. Material condition designated by the minimum value of tensile strength requirement for the product with mandatory tensile strength and elongation requirements; H. Material condition designated by the minimum value
34、of hardness requirement for the product with mandatory hardness requirements. Exact conversion between the material conditions designated R. and H. is not possible. Material condition is designated by only one of the above designations. 4.3 Product The product designation provides a standardized pat
35、tern of designation from which a rapid and unequivocal description of a product is 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 fo
36、r the full content of the standard. The product designation for products to this standard shall consist of: denomination (Tube); number of this European Standard (EN 12450); material condition designation (see Table 1); nominal cross-sectional dimensions (outside diameter inside diameter). The deriv
37、ation of a product designation is shown in the following example. BS EN 12450:2012EN 12450:2012 (E) 6 EXAMPLE Tube conforming to this standard, in material condition R240, nominal outside diameter 4,78 mm, nominal inside diameter 3,30 mm, shall be designated as follows: Tube EN 12450 R240 4,78 3,30
38、Denomination Number of this European Standard Material condition designation Nominal cross-sectional dimensions in millimetres 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 hi
39、s enquiry and order the following information: a) quantity of product required (length or mass); b) denomination (Tube); c) number of this European Standard (EN 12450); d) material condition designation (see 4.2 and Table 1); e) nominal cross-sectional dimensions (outside diameter inside diameter);
40、f) for straight lengths, the length required; g) for coils, the coil mass required; It is recommended that the product designation, as described in 4.3, is used for items b) to e). In addition, the purchaser shall also state on the enquiry and order any of the following, if required: h) whether flow
41、 requirements are to be met, and if so, the test details (see 6.5); i) whether special internal surface quality is required (see 6.6); j) whether a declaration of conformity is required (see 9.1); k) whether an inspection document is required, and if so, which type (see 9.2); l) whether there are an
42、y special requirements for marking, packaging or labelling (see Clause 10). EXAMPLE Ordering details for 1 000 m of tube conforming to EN 12450, in material condition R240, nominal outside diameter 4,78 mm, nominal inside diameter 3,30 mm, nominal length 3 000 mm. 1 000 m Tube EN 12450 R240 4,78 3,3
43、0 nominal length 3 000 mm BS EN 12450:2012EN 12450:2012 (E) 7 6 Requirements 6.1 Composition The composition shall conform to the following requirements: Cu + Ag: min. 99,90 % 0,015 % P 0,040 % This copper is designated either Cu-DHP or CW024A. 6.2 Mechanical properties The properties shall conform
44、to the appropriate requirements given in Table 1. The tests shall be carried out in accordance with either 8.2 (tensile test) or 8.3 (hardness test). Table 1 Mechanical properties Designations Tensile strength Elongation Hardness RmA HV Material Material condition N/mm2% Symbol Number min. max. min.
45、 min. max. Cu-DHP CW024A R240 240 15 H050 50 90 R320 320 5 H095 95 125 R395 395 515 H110 110 NOTE 1 N/mm2is equivalent to 1 MPa. 6.3 Dimensions and tolerances 6.3.1 General The geometrical properties of the tubes are defined by outside diameter, inside diameter and length. The dimensional tolerances
46、 are applied on the outside diameter, inside diameter and length. 6.3.2 Outside diameter and inside diameter The diameters of the tubes shall conform to the following tolerances: outside diameter; inside diameter. The outside diameter of the tube including deviation from circular form for straight l
47、engths, at any cross- section shall not vary from the specified value by more than 0,050 mm. BS EN 12450:2012EN 12450:2012 (E) 8 The mean inside diameter shall not vary from the specified value by more than 0,025 mm which shall be determined by the production flow test (see 8.4). 6.3.3 Length Tubes
48、ordered as straight lengths shall conform to the tolerances given in Table 2. The length of tube ordered in coiled form shall be agreed between the purchaser and the supplier on the basis of the coil mass. Table 2 Tolerances on tubes in straight lengths Tolerances on length mm from 150 up to and including 500 over 500 up to and including 2 000 over 2 000 up to and including 6 000 + 1,6 0 + 2,0 0 + 1 , but not more than 5 mm 6.4 Tolerances on form Tubes in straight lengths shall conform to the tolerances on diameter, including deviation from circular form, given in 6.3.2. Tubes in coiled for
