1、August 2012 Translation by DIN-Sprachendienst.English price group 12No 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
2、 77.150.30; 23.040.15!$u“1908259www.din.deDDIN EN 12451Copper and copper alloys Seamless, round tubes for heat exchangers;English version EN 12451:2012,English translation of DIN EN 12451:2012-08Kupfer und Kupferlegierungen Nahtlose Rundrohre fr Wrmeaustauscher;Englische Fassung EN 12451:2012,Englis
3、che bersetzung von DIN EN 12451:2012-08Cuivre et alliages de cuivre Tubes ronds sans soudure pour changeurs thermiques;Version anglaise EN 12451:2012,Traduction anglaise de DIN EN 12451:2012-08SupersedesDIN EN 12451:1999-10www.beuth.deDocument comprises 24 pagesIn case of doubt, the German-language
4、original shall be considered authoritative.07.12 DIN EN 12451:2012-08 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys” (Secretariat: DIN, Germany). The responsible German body involved in its prepa
5、ration was the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committee), Working Committee NA 066-02-03 AA Kupferrohre (Installation und Industrie). Amendments This standard differs from DIN EN 12451:1999-10 as follows: a) for Cu-DHP (CW024A): the material condition R220 has been ad
6、ded in Table 2; elongation values for R250 and R290 have been modified; b) the annexes have been restructured; c) Annex ZA has been extended. Previous editions DIN 1754: 1925-07, 1927-04, 1933-02, 1960-03 DIN 1754-1: 1969-08 DIN 1755: 1925-07, 1932-08, 1933-02, 1939-01 DIN 1755-1: 1969-08 DIN 1785:
7、1932-07, 1956-05, 1967-12, 1974-06, 1983-10 DIN EN 12451: 1999-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12451 May 2012 ICS 23.040.15; 77.150.30 Supersedes EN 12451:1999English Version Copper and copper alloys - Seamless, round tubes for heat exchangers Cuivre et alliages de cuivre - T
8、ubes ronds sans soudure pour changeurs thermiques Kupfer und Kupferlegierungen - Nahtlose Rundrohre fr Wrmeaustauscher This European Standard was approved 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
9、 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 to any CEN member. This European Standard exists in three official ve
10、rsions (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 Austri
11、a, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom
12、. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES 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 12451:2012: EEN 12451:
13、2012 (E) 2 Contents Page Foreword 31 Scope 52 Normative references 53 Terms and definitions .54 Designations 64.1 Material .64.2 Material condition 64.3 Product .65 Ordering information .76 Requirements .86.1 Composition .86.2 Mechanical properties .86.3 Dimensions and tolerances 96.4 Surface qualit
14、y .96.5 Technological requirements 107 Sampling 107.1 General . 107.2 Analysis . 107.3 Mechanical tests and stress corrosion resistance test 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 R
15、ounding of results 139 Declaration of conformity and inspection documentation . 139.1 Declaration of conformity 139.2 Inspection documentation . 1310 Marking, packaging, labelling 14Annex A (normative) U-bend seamless copper and copper alloy heat exchanger tubes 19Annex ZA (informative) Relationship
16、 between this European Standard and the Essential Requirements of EU Pressure Equipment Directive (PED) 97/23/EC 21Bibliography . 22Tables 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 Toler
17、ances on length . 17 Table 5 Tolerances on squareness of cut 17 Table 6 Sampling rate . 18 Table 7 Drill sizes for production of reference standard tubes 18 Table ZA.1 Correspondence between this European Standard and Directive 97/23/EC . 21 DIN EN 12451:2012-08 EN 12451:2012 (E) 3 Foreword This doc
18、ument (EN 12451:2012) 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, at the latest by Novem
19、ber 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. 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 paten
20、t rights. This document supersedes EN 12451:1999. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC Pressure Equipment Directive (PED). For relationship with EU
21、 Directive 97/23/EU, see informative Annex ZA, which is an integral part of this document. In comparison with EN 12451:1999, the following significant 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
22、 and R290. 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 12451:1999, Copper and copper alloys Seamless, round tubes for heat exchangers This is one of a series of European Stand
23、ards for copper and copper alloy tubes. Other products are 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 12450, Copper and co
24、pper alloys Seamless, round copper capillary tubes 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, Copper and co
25、pper 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 13600, Copper a
26、nd copper alloys Seamless copper tubes for electrical purposes DIN EN 12451:2012-08 EN 12451:2012 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croati
27、a, Cyprus, Czech Republic, Denmark, Estonia, Finland, 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. DIN EN 12451:2012-08 E
28、N 12451:2012 (E) 5 1 Scope This European Standard specifies the composition, property requirements and tolerances on dimensions and form for seamless round drawn copper and copper alloy tubes for heat exchangers, condensers, evaporators and desalination equipment. It is applicable to copper and copp
29、er 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. The sampling procedures and the methods of test for verification of conformity to the requirements of this European Standard are also specified. 2 N
30、ormative 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 cited applies. For undated references, the latest edition of the referenced document (including any amendmen
31、ts) applies. EN 1655, Copper and copper alloys Declarations of conformity EN 1971-1, Copper and copper alloys Eddy current test for measuring defects on 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 Edd
32、y 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 10204:2004, Metallic products Types of inspection documents EN 16090, Copper and copper alloys Estimation of average grain size by ultrasound EN ISO 196, W
33、rought copper and copper alloys Detection of residual stress Mercury (l) nitrate test (ISO 196) EN ISO 2624, Copper and copper alloys Estimation of average 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
34、 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, Copper alloys Ammonia test for stress corrosion resistance 3 Terms and definitions For the purposes of this document, the following terms and defini
35、tions 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 wall thickness arithmetical mean of the maximum and minimum wall thicknesses at the same cross-section
36、of the tube DIN EN 12451:2012-08 EN 12451:2012 (E) 6 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+A1:2010, 3.6 4 Designations 4.1 Material 4.1.1 General The material is designated eith
37、er 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 material symbol designations used in this European Standard might be the same as those in other standards using the designation system given in
38、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 European Standard, the following designations, which are in accordance with
39、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 property requirements; H. Material condition designated by the minimum value of hardness requirement for the pro
40、duct with mandatory hardness requirements. S (suffix) Material condition for a product which is stress relieved. NOTE 1 Products in the H. condition can be specified to Vickers or Brinell hardness. The condition designation H. is the same for both hardness test methods. NOTE 2 Products in the R. or
41、H. condition can be specially processed (i.e. mechanically or thermally stress relieved) in order to lower the residual stress level to improve the resistance to stress corrosion (see 6.5.2). Exact conversion between material conditions designated R. and H. is not possible. Except when the suffix S
42、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 designation from which a rapid and unequivocal description of a product can be conveyed in communication. It provides mutual comprehension at th
43、e 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 standard. DIN EN 12451:2012-08 EN 12451:2012 (E) 7 The product designation for products to this European Standard shall co
44、nsist of: denomination (Tube); number of this European Standard (EN 12451); material designation, either symbol or number (see Table 1); material condition designation (see Table 2); nominal cross-sectional dimensions (outside diameter wall thickness). The derivation of a product designation is show
45、n in the following example. EXAMPLE Tube conforming to this European Standard, in material designated either CuNi10Fe1Mn or CW352H, in material condition H075, with 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
46、 or Tube EN 12451 CW352H H075 22 2,0 Denomination Number of this European Standard Material designation Material condition designation Nominal dimensions in millimetres 5 Ordering information In order to facilitate the enquiry, order and confirmation of order procedures between the purchaser and the
47、 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 specific product and ordering information, see Annex A. a) quantity of product required (number of pieces, length or mass); b) denomination (Tu
48、be); 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 cross-sectional dimensions (outside diameter wall thickness); g) nominal length (see 6.3.4). NOTE 2 It is recommended that the product designation, as descr
