Zinc anodes are widely adopted for protecting of steel construction from corrosion in seawater and saline mud.
The alloy chemical compositions of the anode are covered by US MIL-A-18001H and the ASTM-B418 type I standard.
Chemical composition%:
| Zn | AL | Cd | Fe | Pb | Cu |
| Balance | 0.1-0.5 | 0.02-0.07 | 0.005 max | 0.006 max | 0.005max |
Electrochemical properties :
| Environment | Open Voltage(-V) | Closed Voltage(-V) | Actual capacitance A.h/kg | Efficiency % | Solution Appearance |
| Sea water | 1.05-1.09 | 1.00-1.05 |  780 min
| 95 min | Solute uniformly |
| soil |  1.05
| 1.03 | 530 | 17.25 | |
Size Specification :
CORRTECH supplies Zn anodes in different shapes according to customer's request. There are hull, condenser, tank anodes and bracelet shapes anodes. The anodes also can be made in strings.
Following are some of the anodes available
1. Zn anodes for Vessel
| Type | AZ-V01 | AZ-V02 | AZ-V03 | AZ-V04 | AZ-V05 | AZ-V06 | AZ-V07 | AZ-V08 |
| Size | 390x120x50 | 500x150x40 | 300x150x35 | 400x100x35 | 300x150x30 | 320x100x40 | 250x100x35 | 200x100x35 |
| Weight | 15.6 | 13.6 | 11 | 9 | 8.6 | 8 | 5.6 | 4 |
| Current | 610 | 680 | 540 | 540 | 540 | 400 | 410 | 370 |
2. Zn anodes for ballast tank
| Type | AZ-B01 | AZ-B02 | AZ-B03 | AZ-B04 | AZ-B05 | AZ-B06 |
| Size | 1500x(65+75)x70 | 100x(58.5+78.5)x68 | 800x(56+74)x65 | 1143x(48+54)x51 | 800x(58+64)x60 | 650x(58+64)x70 |
| Weight | 52.8 | 33 | 25 | 22 | 22 | 18 |
3. Zn anodes for Oil Tank
| Type | AZ-T01 | AZ-T02 | AZ-T03 | AZ-T04 | AZ-T05 | AZ-T06 |
| Size | 500x(105+135)x100 | Dia300 x80 | 390x120x65 | Dia250x60 | Dia200x50 | 350x(60+90)x75 |
| Weight | 40 | 40 | 20 | 20 | 10 | 14 |
4. Zn anodes for Pipeline in seawater
| Type | AZ-P01 | AZ-P02 | AZ-03 | AZ-04 |
| Size | 622x51x420x38 | 530x46x464x38 | 503x51x400x51 | 371x51x562x51 |
| Weight | 261 | 218 | 191 | 184 |
Zn anodes for Pipeline in seawater anodes are all in bracelet shape
The dimension is: diameter x thickness x length x distance between the bracelet.
MSN