Type of water |
Corrosion Rate (mm/yr) |
Mine water, pH 8.3, 100 ppm hardness, aerated |
31 |
Mine water, 160 ppm hardness, aerated |
30 |
Mine water, 110 ppm hardness, aerated |
46 |
Demineralized water |
137 |
River water, moderate soft |
61 |
River water, treated by chlorination and copper sulfate |
64 |
Tap water, pH 5.6, 170 ppm hardness, aerated |
142 |
Spray cooling water, chromate treated, aerated |
15 |
Hard water |
16 |
Soft water |
15 |
Sources: Defrancq, J. N. ; Zinc and zinc-lead alloys in domestic water, Br. Corros. J. 17, 125-130, 1982.
Slunder, C. J., and Boyd, W. K.; Zinc: Its Corrosion Resistance, 2nd ed., International Lead Zinc Research Organization, Inc., New York, 1986. |