Aluminium Anodes
Aluminum Anodes have been accepted as the most economical galvanic anode especially to large marine structures such as harbor facilities, offshore structure Power Stations & Plants , Ships & etc.. requiring long life corrosion protection.
Compositions of Aluminum Alloys
Si 0.10 % Max Si 0.10 % Max
Fe 0.10 % Max Fe 0.13 % Max
Cu 0.005 % Max Cu 0.005 % Max
Mn N / A Mn N / A
Zn 2.0 – 6.0 % Zn 4.0 – 6.0 %
Ti - Ti -
In 0.01 – 0.03 % In -
Sn - Sn 0.05 – 0.15 % Max
Other El 0.10 % Max Other El 0.10 % Max
Al Remainder Al Remainder
Open circuit potential
( VS Ag / AgCl ref. cell ) -1.05 volt
Nominal Electrochemical capacity
in seawater Max 2680 Amp.hr / kg
Efficiency 95 %