ALUNODE is a newly developed Al-Zn-In type alloy anode with high purity aluminium as main component and due to its large current capacity and light weight compared with other anodes, ALUNODE has been accepted as the most economical galvanic anode especially to large sea structures such as habor and offshore structures, ships, etc., requiring long life corrosion protection. The standard properties of ALUNODE are as shown in Table 1 below.