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CONDENSOR & HEATEXCHANGER TUBES

Direct Import of high quality tubing in Copper, Brass, Cupro-Nickel, Aluminum Brass, Admiralty Brass and other Copper Alloys, acc. to C71500, C70600, C68700, C 44300 etc.

  
Standard BS 2871Part 3 ASTM
B -111		 DIN 1785 NFA 51
102		 JIS H3300 IS 1545
Symbol CN 107 C 71500 CuNi 30
Mn 1 Fe 		 CuNi 30
Mn 1 Fe 		 C 7150 CuNi 30
Mn 1 Fe 
Cu Rem Rem Rem Rem Rem Rem
Pb 0.01 0.05 0.03 0.05
Sn + Pb		 0.05 0.05
Ni 30.00-32.0 29.0-33.0 30.0-32.0 29.0 –32.0 29.0-33.0 29.0-33.0
Fe 0.4-1.0 0.4-1.0 0.4-1.0 0.4-0.7 0.4-0.7 0.4-1.0
Mn 0.5-1.0 1.0 0.5-1.5 0.5-1.5 0.2-1.0 0.5-1.0
Zn -- 1.0 0.5 0.5 0.5 0.5
S 0.08 -- 0.05 0.02 -- --
C 0.06 -- 0.05 0.06 -- --
Total impurities Max. 0.30 -- 0.30 0.10 Rem.(Cu +Fe +Mn 99.5 Min.) 0.30
Condition M
O		 061
HR 50		 F 37
F 42		 -- O

O
D 
Yield Stength N/mm2 -- 125 Min. 345Min. 120-220
150-260		 -- -- --
Tensile
N/mm2		 -- 360 Min.
495 Min.		 370 Min.
420 Min.		 -- 363 min. 360
480
Elongation %   -- 12 / 15 * 35 Min.
30 Min.		 -- 30 Min. --
Hardness  HV 5 150  
90-120		 -- -- 90-130 -- 115 Max.
140 Min.
Grain size
Mm (75X)		 0.05 Max -- -- .010-.045 .010-.045 --

*Wall Thickness up to 1.21mm, including, 15% wall thickness over 1.21mm

Product Application Areas :
High Capacity Power Plant, Ship Building & Ship Repairs, Heat Exchangers and condencors, Distiller Tubes, Evaporators, Ferrules.

Characteristics :
A Copper Nickel Alloy having small amount of iron and manganese to improve corrosion resistance in high velocity ( from 1 to about 4mtrs/sec.) waters, including sea water. The alloy is relatively insensitive to stress corrosion. It had good cold and hot working properties and is readily weldable.

Guide to the selection of tube material :

Sea Water-

  • Dissolved salts more than 10,000 ppm.

  • Absance of abrasive Suspended solids.

  • Polluted with H2s and Ammonia.

Permissible average velocity of water 3-4 meters /sec.
  Copper - DHP Copper Capillary - 90 /10 Cupro Nickel - 70/30 Cupro Nickel - Admiralty Brass - Aluminium Brass - 70/30 Brass - 63/37 Brass - Copper Fin  

      Latest revision: 2005-05-04 13:24     

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