Aluminium Brass Tube
Aluminium Brass Tubes are generally used with brackish or sea water. Through its arsenic inhibition, it is virtually immune from dezincification and, when fully annealed, also practically free from stress-corrosion cracking. Aluminium Brass Tubes is resistant to pitting and even more so to impingement attack: in fresh water, a velocity of up to 3,5 m/s ( 11, 5 f/s) is admitted; it should be reduced to about 2,5 m/s (8,5 f/s) when operating in sea water.
Specifications:
| Aluminium Brass Tubes |
|
| Chemical Requirements | ||
| Copper (Cu) | 76.0 to 79.0% | |
| Aluminium (Al) | 1.8 to 2.5% | |
| Arsenic (As) | 0.02 to 0.06% | |
| Zinc (An) | Remainder | |
| Iron (Fe) | 0.06% Max | |
| Physical Properties | ||
| Condition | T.S.Kg/mm2 | EL% Min |
| Annealed | 30 to 37.5 | 40% |
| Temper Annealed (TA) | 35.50 min. | 35% |
| As manufactured (M) | 46 min. | – |
| Further Tests | ||
| Drift Test Flattening Test Microstructure Test MN Test Eddy Current Optional |
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| Uses | ||
| Excellent resistance to impinging action of turbulently flowing sea and fresh water, Used in marine and power station condensers and petroleum refineries. | ||
