EN 12451:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Baker in bakrove zlitine - Nevarjene cevi z okroglim prerezom za toplotne izmenjevalnikeKupfer und Kupferlegierungen - Nahtlose Rundrohre für WärmeaustauscherCuivre et alliages de cuivre - Tubes ronds sans soudure pour échangeurs thermiquesCopper and copper alloys - Seamless, round tubes for heat exchangers77.150.30Bakreni izdelkiCopper products23.040.15Cevi iz neželeznih kovinNon-ferrous metal pipesICS:Ta slovenski standard je istoveten z:EN 12451:2012SIST EN 12451:2012en,de01-september-2012SIST EN 12451:2012SLOVENSKI
STANDARDSIST EN 12451:20001DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE 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 - Tubes ronds sans soudure pour échangeurs thermiques
Kupfer und Kupferlegierungen - Nahtlose Rundrohre für Wärmeaustauscher 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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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: ESIST EN 12451:2012

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 . 22 Tables 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 reference standard tubes . 18 Table ZA.1 — Correspondence between this European Standard and Directive 97/23/EC . 21
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 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 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 13600, Copper and copper alloys — Seamless copper tubes for electrical purposes SIST EN 12451:2012

(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 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 production 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 SIST EN 12451:2012

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 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 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 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 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 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 standard. SIST EN 12451:2012

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 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 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 (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 cross-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). SIST EN 12451:2012

1 000 m Tube EN 12451 – CuNi10Fe1Mn – H075 – 22 ×××× 2,0
– nominal length 3 000 mm
or
1 000 m Tube EN 12451 – CW352H – H075 – 22 ×××× 2,0
– nominal length 3 000 mm 6 Requirements 6.1 Composition The composition shall conform to the requirements for the appropriate material given in Table 1. 6.2 Mechanical properties The properties shall conform to the appropriate requirements given in Table 2. The tests shall be carried out in accordance with either 8.2 (tensile test) or 8.3 (hardness test). Products in stress relieved condition shall conform to the same mechanical property requirements as for non-stress relieved material. SIST EN 12451:2012
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