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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 51 102 JIS H3300 IS 1545
Symbol CZ-110 C 68700 CuZn 20
AL2 		 CuZn 22
AL2		 C 6870 CuZn 21
AL 2  As
Cu 76.0-78.0 76.0 -79.0 76.0 -79.0 76.0 -79.0 76.0 -79.0 76.0 -78.0
AL 1.8-2.3 1.8-2.5 1.8-2.3 1.8-2.5 1.8-2.5 1.8-2.3
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 39
F 34		 -- O

O
TA
D 
Yield Stength N/mm2 -- 125 150-230
120-180		 -- -- 400 mpa Max.
335 mpa Max.
415 mpa Max.
Tensile
N/mm2		 -- 345 390 Min.
340 Min.		 -- 375 --
Elongation %   -- -- 45 Min.
55 Min.		 -- 40 85 Max.
80-110
130 Min.
Hardness  HV 5 150 Min
80-110
75- Max		 -- -- 80-130 -- --`
Grain size
Mm (75X)		 0.05 Max .010-.045 -- .010-.045 .010-.045 .010-.045

Product Application Areas :
Power Plants, Heat Exchangers, Refineries, Power Plants, Desalination Plants, Ship Building & Ship Repairs, Radiators, Off Shore oil rigs, Condensors, Evaporators, Ferrules, Distillers.

Characteristics :
A Copper Zinc Alloy containing Aluminum and small amount of Arsenic which is added as an inhibitor against dezincification. Inhibited Aluminum brass resists the action of high velocity salt and brackish water and is commonly used for condensor tubes. The outstanding characteristics of aluminum brass is the high resistance to impingement attack. Tubes of this alloy are recommended for use in marine and land power stations where cooling water velocities are high and where inhibited admiralty brass has failed from impingement.

Guide to the selection of tube material :

Sea Water-

  • Dissolved salts more than 2,000 ppm.

  • Suspended solids more than 30 ppm.

  • H2s and Ammonia is less than 1 ppm.

Permissible average velocity of water 2.08 - 2.5 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 13:17     

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