Zinc specification of sacrificial zinc anodes
Specification Code
Iron (FE)
Cadium (CD)
Copper (CU)
Aluminium (AL)
Lead (PB)
Others total
Zinc (ZN)
US Mil Spec 18001K
0.005%
0.025% – 0.7%
0.005% maximum
0.1% – 0.5%
0.006% maximum
0.1% maximum
Remainder
Capacity: 780 Amp-Hr/Kg
Potential: -1.05v Silver/Silver Reference Cell
This alloy is produced from pure high grade Zinc (99.995% purity) and then alloyed to above specification, it is false economy to purchase zinc anodes which are not correctly formulated, minor variations can have a dramatic impact on the effectiveness of the alloys and their lifetime.
Aluminium specification of sacrificial aluminium anodes
Specification Code
Iron (FE)
Silicon (SI)
Copper (CU)
Zinc (ZN)
Indium (IN)
Titanium (TI)
Gallium (GA)
Mercury (HG)
Nickel (NI)
Others total
Aluminium
US Mil Spec 24779B
0.90% maximum
0.08% – 0.2%
0.004% maximum
4.0% – 6.5%
0.041% – 0.020%
N/A
N/A
0.001% maximum
N/A
0.250% maximum
Remainder
Capacity: 2535 Amp-Hr/Kg
Potential: -1.05v Silver/Silver Reference Cell
This alloy is produced from high grade aluminium and then alloyed to the above specification, ideally suited for transition from sea to brackish water, or varying seawater temperatures, and salinity.