Factors Affecting Corrosion in Gulf of Finland Brackish Water

Table 4

Results of planned interval immersion test in Isosaari brackish water, average values from all tests.

Material	Corrosion rate m/year
Al 99.5%	5 ± 1
Cu 99.5%	4 ± 1
CuZn23Al1	12 ± 1
Unalloyed steel	120 ± 10
Galvanized steel	24 ± 3
304 stainless steel	<1
316 stainless steel	<1
Zn 99.995%	50 ± 4