| Location and water |
Type of zinc |
Type of test |
Years |
Agitation |
Corrosion rate (mm/year) |
| Eastport, Maine Seawater |
99.1% zinc |
Mean tide level |
3 |
|
25 |
| Eastport, Maine Seawater |
99.1% zinc |
Immersion |
3 |
|
16 |
| Bristol Channel Seawater |
Prime Western |
Immersion about 93% of time |
4 |
|
91 |
| Bristol Channel Seawater |
Galvanzied bar |
Immersion about 93% of time |
4 |
|
64 |
| Southhampton docks Seawater |
Prime western |
At half-tide level |
3 |
|
13 |
| Southhampton docks Seawater |
High grade |
At half-tide level |
3 |
|
14 |
| Southhampton docks Seawater |
Galvanized plate |
Immersion |
1 |
|
28 |
| Fort Amador, Canal Zone Tropical, Pacific Ocean |
Intermediate |
Immersion |
4 |
0.15 m/s flow |
20 |
| Fort Amador, Canal Zone Tropical, Pacific Ocean |
Intermediate |
Immersion |
8 |
0.15 m/s flow |
16 |
| Fort Amador, Canal Zone Tropical, Pacific Ocean |
Intermediate |
Mean tide level |
4 |
0.15 m/s flow |
23 |
| Fort Amador, Canal Zone Tropical, Pacific Ocean |
Intermediate |
Mean tide |
8 |
0.15 m/s flow |
14 |
| Panama Seawater |
Cast-Prime Western |
Immersion |
1 |
|
25 |
| Panama Seawater |
Cast-Special high grade |
Immersion |
1 |
|
25 |
| Kure Beach, North Carolina Seawater |
Special high grade |
Immersion |
0.5 |
Flowing |
48 |
| Kure Beach, North Carolina Seawater |
Special high grade |
Immersion |
4 |
Flowing |
20 |
| Kure Beach, North Carolina Seawater |
Brass special |
Immersion |
0.5 |
Flowing |
48 |
| Kure Beach, North Carolina Seawater |
Brass special |
Immersion |
4 |
Flowing |
18 |
| Kure Beach, North Carolina Seawater |
Galvanized |
Immersion |
0.5 |
Flowing |
48 |
| Kure Beach, North Carolina Seawater |
Galvanized |
Immersion |
1 |
Flowing |
23 |
| Kure Beach, North Carolina Seawater |
Galvanized |
Immersion |
3.5 |
Flowing |
15 |
| Kure Beach, North Carolina Seawater |
Galvanized |
Immersion |
5 |
Flowing |
13 |
| Gosport and Emsworth Seawater |
Hot-dipped |
Immersion |
6 |
Flowing |
9 |
| Gosport and Emsworth Seawater |
Hot-dipped |
Immersion |
6 |
Flowing |
9 |
| Gosport and Emsworth Seawater |
Cyanide, electrodeposit |
Immersion |
6 |
Flowing |
8 |
| Gosport and Emsworth Seawater |
Sprayed, molten metal pistol |
Immersion |
6 |
Flowing |
4 |
| Gosport and Emsworth Seawater |
Sprayed, powder pistol |
Immersion |
6 |
Flowing |
17 |
| Gosport and Emsworth Seawater |
Sprayed, wire pistol |
Immersion |
6 |
Flowing |
6 |
| Source: Porter, F. C. Corrosion Resistance of Zinc and Zinc Alloys. Dekker, New York, 523pp. 1994. |
