Admiralty Brass Tubes
For Evaporators & Coolers |
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Product Application Areas :
Heat Exchangers, Refineries, Power Plants, Desalination Plants, Ship Building & Ship Repairs, Condensers, Ferrules, Distillers.
Characteristic :
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 seawater, either stagnant or slow moving (upto about 2 mtrs/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.a. Dissolved salts more than 2000 ppm.b. Chloride less then 20 ppm.c. H2S and Ammonia is less than 1 ppm.d. Suspended solids less than 25 ppm.e. For temperature more than 2000C and less than 4500 C.Permissible average velocity of water 1.8-2.0 meters/sec.
| Chemical Composition of Admiralty Brass |
| Cu |
70.0-73.0 |
| Zn |
rem. |
| Pb |
0.07 max |
| Fe |
0.06 max |
| Sn |
0.9-1.2 |
| As |
0.02-0.08 |
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| Related Standards |
| ISS |
Cuzn28Sn |
| KS |
D5301
C4430 |
| JIS |
H3300
C4430 |
| ASTM |
B111
C44300 |
| BS |
2871
CZ111 |
| DIN |
1785
CuZn28Sn |
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Mechanical Properties |
| Classification |
Temper |
Designation |
Outside diameter (mm) |
Thickness (mm) |
Tensile Strength Kgf/mm2 |
Elongation (%) |
Yield Strength (kg/mm2) |
ASTM JIS Admiralty Brass
Aluminum Brass |
061
061 |
C4430T-O
C4431TS-O |
5mm and over upto and incl 250mm |
0.8mm and over upto and incl 10mm |
32 min |
30min |
11min |
C6870T-O
C6870TS-O |
5mm and over upto and incl 50mm |
0.8mm and over upto and incl 10mm |
36min |
40min |
13min |
C6871T-O
C6871TS-O
C6872T-O |
Over 50mm upto and incl 250mm |
0.8mm and over upto and incl 10mm |
36min |
40min |
13min |
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C6872TS-O |
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Application :
- C44300 Admiralty Brass Tubes :
- Evaporators, Condensate Coolers, Heaters, Vent Condensers, Water Heaters, Generator, Air Coolers, Turbine Oil Coolers for Petrochemical, Ship-building, Power plants and Desalinations plants.
- C68700 Aluminum Brass Tubes :
- Steam Ejector Inter and after Condensers, Gland Steam Condensers, Feed Water Evaporators for Petrochemical, Ship-building, Power plants and Desalinations plants.
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