1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12451:2012Copper and copper alloys Seamless, round tubes for heatexchangersBS EN 12451:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation
2、of EN 12451:2012. Itsupersedes BS EN 12451:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/34/1, Wrought and unwrought copper and copperalloys.A list of organizations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
3、 publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 71888 5ICS 77.150.30Compliance 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 May 2012.Amendments issued since publicationDate Text affectedBS EN 12451:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12451 May 2012 ICS 23.040.15; 77.1
5、50.30 Supersedes EN 12451:1999English Version Copper and copper alloys - Seamless, round tubes for heat exchangers Cuivre et alliages de cuivre - Tubes ronds sans soudure pour changeurs thermiques Kupfer und Kupferlegierungen - Nahtlose Rundrohre fr Wrmeaustauscher This European Standard was approve
6、d by CEN on 20 April 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 references concerning such national sta
7、ndards 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 member into its own language and
8、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, Lith
9、uania, 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 KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brusse
10、ls 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12451:2012: EBS EN 12451:2012EN 12451:2012 (E) 2 Contents Page Foreword 31 Scope 52 Normative references 53 Terms and definitions .54 Designations 64.1 Material .64.2 Material
11、 condition 64.3 Product .65 Ordering information .76 Requirements .86.1 Composition .86.2 Mechanical properties .86.3 Dimensions and tolerances 96.4 Surface quality .96.5 Technological requirements 107 Sampling 107.1 General . 107.2 Analysis . 107.3 Mechanical tests and stress corrosion resistance t
12、est 118 Test methods . 118.1 Analysis . 118.2 Tensile test 118.3 Hardness test 118.4 Technological tests 118.5 Freedom from defects tests . 118.6 Retests . 138.7 Rounding of results 139 Declaration of conformity and inspection documentation . 139.1 Declaration of conformity 139.2 Inspection document
13、ation . 1310 Marking, packaging, labelling 14Annex A (normative) U-bend seamless copper and copper alloy heat exchanger tubes 19Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Pressure Equipment Directive (PED) 97/23/EC 21Bibliography . 22Table
14、s Table 1 Composition of copper and copper alloys 15 Table 2 Mechanical properties of copper and copper alloys . 16 Table 3 Tolerances on diameter 17 Table 4 Tolerances on length . 17 Table 5 Tolerances on squareness of cut 17 Table 6 Sampling rate . 18 Table 7 Drill sizes for production of referenc
15、e standard tubes 18 Table ZA.1 Correspondence between this European Standard and Directive 97/23/EC . 21 BS EN 12451:2012EN 12451:2012 (E) 3 Foreword This document (EN 12451:2012) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, the secretariat of which is held by DIN.
16、 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 November 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. Attention is drawn to the possibility that som
17、e 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 12451:1999. This document has been prepared under a mandate given to CEN by the European Commission and
18、the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC Pressure Equipment Directive (PED). For relationship with EU Directive 97/23/EU, see informative Annex ZA, which is an integral part of this document. In comparison with EN 12451:1999, the following sig
19、nificant technical changes were made: a) for Cu-DHP (CW024A): 1) the material condition R220 in Table 2 was added; 2) elongation values were modified for R250 and R290. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 3 “Copper tubes (installation and industrial)“
20、 to revise the following standard: EN 12451:1999, Copper and copper alloys Seamless, round tubes for heat exchangers This is one of a series of European Standards for copper and copper alloy tubes. Other products are specified as follows: EN 1057, Copper and copper alloys Seamless, round copper tube
21、s for water and gas in sanitary and heating applications EN 12449, Copper and copper alloys Seamless, round tubes for general purposes EN 12450, Copper and copper alloys Seamless, round copper capillary tubes EN 12452, Copper and copper alloys Rolled, finned, seamless tubes for heat exchangers EN 12
22、735-1, Copper and copper alloys Seamless, round copper tubes for air conditioning and refrigeration Part 1: Tubes for piping systems EN 12735-2, Copper and copper alloys Seamless, round copper tubes for air conditioning and refrigeration Part 2: Tubes for equipment EN 13348, Copper and copper alloys
23、 Seamless, round copper tubes for medical gases or vacuum EN 13349, Copper and copper alloys Pre-insulated copper tubes with solid covering EN 13600, Copper and copper alloys Seamless copper tubes for electrical purposes BS EN 12451:2012EN 12451:2012 (E) 4 According to the CEN/CENELEC Internal Regul
24、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Mal
25、ta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12451:2012EN 12451:2012 (E) 5 1 Scope This European Standard specifies the composition, property requirements and tolerances on dimensions and form for seamless ro
26、und drawn copper and copper alloy tubes for heat exchangers, condensers, evaporators and desalination equipment. It is applicable to copper and copper alloy tubes supplied in the size range from 6 mm up to and including 76 mm outside diameter and from 0,5 mm up to and including 3 mm wall thickness.
27、The sampling procedures and 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.
28、 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1655, Copper and copper alloys Declarations of conformity EN 1971-1, Copper and copper alloys Eddy current test for measuring defects on
29、 seamless round copper and copper alloy tubes Part 1: Test with an encircling test coil on the outer surface EN 1971-2, Copper and copper alloys Eddy current test for measuring defects on seamless round copper and copper alloy tubes Part 2: Test with an internal probe on the inner surface EN 10204:2
30、004, Metallic products Types of inspection documents EN 16090, Copper and copper alloys Estimation of average grain size by ultrasound EN ISO 196, Wrought copper and copper alloys Detection of residual stress Mercury (l) nitrate test (ISO 196) EN ISO 2624, Copper and copper alloys Estimation of aver
31、age grain size (ISO 2624) 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) EN ISO 8493, Metallic materials Tube Drift-expanding test (ISO 8493) ISO 6957,
32、Copper alloys Ammonia test for stress corrosion resistance 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 seamless round tube hollow semi-finished product, circular in cross-section, having a uniform wall thickness, which at all stages of pr
33、oduction has a continuous periphery 3.2 mean wall thickness arithmetical mean of the maximum and minimum wall thicknesses at the same cross-section of the tube BS EN 12451:2012EN 12451:2012 (E) 6 3.3 deviation from circular form difference between the maximum and minimum outside diameters measured a
34、t any one cross-section of the tube SOURCE: EN 1057:2006+A1:2010, 3.6 4 Designations 4.1 Material 4.1.1 General The material is designated either by symbol or by number (see Table 1). 4.1.2 Symbol The material symbol designation is based on the designation system given in ISO 1190-1. NOTE Although m
35、aterial symbol designations used in this European Standard might be the same as those in other standards using the 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
36、 given in EN 1412. 4.2 Material condition For the purposes of this European Standard, the following designations, which are 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
37、product with mandatory tensile property requirements; H. Material condition designated by the minimum value of hardness requirement for the product with mandatory hardness requirements. S (suffix) Material condition for a product which is stress relieved. NOTE 1 Products in the H. condition can be s
38、pecified to Vickers or Brinell hardness. The condition designation H. is the same for both hardness test methods. NOTE 2 Products in the R. or H. condition can be specially processed (i.e. mechanically or thermally stress relieved) in order to lower the residual stress level to improve the resistanc
39、e to stress corrosion (see 6.5.2). Exact conversion between material conditions designated R. and H. is not possible. Except when the suffix S is used, the material condition is designated by only one of the above designations. 4.3 Product The product designation provides a standardized pattern of d
40、esignation 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
41、 full content of the standard. BS EN 12451:2012EN 12451:2012 (E) 7 The product designation for products to this European Standard shall consist of: denomination (Tube); number of this European Standard (EN 12451); material designation, either symbol or number (see Table 1); material condition design
42、ation (see Table 2); nominal cross-sectional dimensions (outside diameter wall thickness). The derivation of a product designation is shown in the following example. EXAMPLE Tube conforming to this European Standard, in material designated either CuNi10Fe1Mn or CW352H, in material condition H075, wi
43、th nominal outside diameter 22 mm and nominal wall thickness 2,0 mm, shall be designated as follows: Tube EN 12451 CuNi10Fe1Mn H075 22 2,0 or Tube EN 12451 CW352H H075 22 2,0 Denomination Number of this European Standard Material designation Material condition designation Nominal dimensions in milli
44、metres 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: NOTE 1 Heat exchanger tube can also be supplied as U-bend tube. For speci
45、fic product and ordering information, see Annex A. a) quantity of product required (number of pieces, length or mass); b) denomination (Tube); c) number of this European Standard (EN 12451); d) material designation (see Table 1); e) material condition designation (see 4.2 and Table 2); f) nominal cr
46、oss-sectional dimensions (outside diameter wall thickness); g) nominal length (see 6.3.4). NOTE 2 It is recommended that the product designation, as described in 4.3, is used for items b) to f). BS EN 12451:2012EN 12451:2012 (E) 8 In addition, the purchaser shall also state on the enquiry and order
47、any of the following, if required: h) whether minimum wall thickness is required (see 6.3.3.2); i) whether the tubes in alloy CuNi10Fe1Mn (CW352H) are for sea water application (see Table 1), and if so, the composition limits required; j) whether the tubes are required to pass a stress corrosion res
48、istance test (see 6.5.2); k) whether the tubes in hard condition are required with annealed ends; l) whether the tubes are required to pass freedom from defects tests (see 6.5.4), and if so, which test method is to be used (see 8.5) if the choice and/or the acceptance criteria is (are) not to be lef
49、t to the discretion of the supplier; m) whether the tubes are for subsequent welding applications (see Table 1); n) whether special surface quality is required (see 6.4); o) whether a declaration of conformity is required (see 9.1); p) whether an inspection document is required, and if so, which type (see 9.2); q) whether there are any special re
