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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 2871
Part 3		 ASTM
B -111		 DIN 1785 NFA JIS H3300 IS 1545
Symbol CZ-111 C 44300 CuZn 28
Sn 1 		 CuZn 28
Sn 1 		 C 4430 CuZn 29
Sn 1  As
Cu 70.0 - 73.0 70.0 -73.0 70.0-72.5 70.0-73.0 70.0-73.0 70.0-73.0
Sn 1.0 - 1.5 0.9 - 1.2 0.9 - 1.3 0.9 - 1.2 0.9 - 1.2 1.0 -1.5
Pb 0.07 0.07 0.07 0.07 0.07 0.07
Ni - - 0.1 - - -
Fe 0.06 0.06 0.07 0.06 0.06 0.06
Zn Rem Rem Rem Rem Rem Rem
As 0.02-0.06 0.02-0.06 0.02-0.035 0.02-0.06 0.02-0.06 0.02-0.06
P - - 0.01 - - -
Total impurities Max. 0.30 -- 0.1 0.30 - 0.3
Condition M
TA
O		 061 F 36
F 32		 -- O O
TA
D 
Yield Stength N/mm2 -- 105 140-220
100-170		 -- -- --
Tensile
N/mm2		 -- 310 360 Min.
320 Min.		 -- 314 min. 375 mpa Max.
340 mpa Max.
385 mpa Max.
Elongation %   -- -- 45 Min.
55 Min.		 -- 30 Min. --
Hardness  HV 5 150 Min
80-105
75- Max		 -- -- 80-120 -- 80 Max.
80-105
130 Min.
Grain size
Mm (75X)		 0.05 Max .010-.045 -- .010-.045 .010-.045 .010-.045

Product Application Areas :
Heat Exchangers, Refineries, Power Plants, Desalination Plants, Ship Building & Ship Repairs, Condensors, Ferrules, Distillers.

Characteristics :
A Copper Zinc Alloy containing tin and small amount of Arsenic which is added as an inhibitor against dezincification. The pressure of Tin imparts to the alloy good corrosion resistance in a moderately polluted  river water and clean sea water, either stagnant or slow moving (up to about 2 meters / sec.). The most common and wrought form is tube for heat exchange equipment.

Guide to the selection of tube material :

Clear River, Lake or Canal Water-

  • Dissolved salts more than 2,000 ppm.

  • Chloride less than 20 ppm.

  • H2s and Ammonia is less than 1 ppm.

  • Suspended solids less than 25 ppm.

  • For temperatures more than 200oc and less than 450oc

Permissible average velocity of water 1.8 - 2.0 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 13:16     

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