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Zinc Anodes


Zinc based anodes are widely used for shipping applications, they are also used for offshore structures but their higher density can lead to weight limitations. Zinc anodes do not require a chloride environment to operate and can be used in brackish and fresh water applications with resistivity up to 30 Ohm*m. 
There is a wide range of alloy compositions available. Our Zinc anodes are subject of National and/or International Patents. The different compositions are intended to optimize specific performance properties.
The electrochemical properties for zinc based alloys will vary depending on the specific alloy composition and the operating environment. 



Cathodic protection of ships and other marine metallic structures.Generally, zinc alloys are only applicable at temperatures up to 50 °C. Above this temperature, zinc alloys can suffer from inter-granular corrosion, especially when buried in saline mud. Also restrictions impose and where pH is over 8. Under these situations, zinc becomes Cathodic, rather than anodic, and should be avoided.  
Syncor develop a Zinc alloy that can operate successfully at higher temperatures up to 85 °C. 



Marine

Oil & Gas

Port & Harbors

Offshore wind farms

Chemical Composition

Element

US Mil 18001

Type I

ASTM B418, Type II

High temp Alloy 60-80OC

Aluminum

0.1-0.5%

<0.005%

0.10-0.25%

Cadmium 

0.025-0.07%

<0.003%

<0.001%

Iron

<0.005%

<0.014%

<0.002%

Copper

<0.005%

<0.002%

<0.001%

Pb

<0.006%

<0.003%

<0.006%

Mg

-

-

0.05-0.15%

Other single

<0.02%

<0.001%

<0.02%

Total Others

<0.10%

<0.005%

<0.10%

Zinc

Balance

Balance

Balance

Electrochemical characteristics

 

 

 

Capacity min

780 Ahr/Kg

760 Ahr/Kg

690 Ahr/Kg

Closed circuit potential (Ag/AgCl)

-1.03V

-1.00V

-0.97V

Consumption rate

11.2Kg/year

11.5Kg/year

12.7Kg/year

Vessel/Shipbuilding

Flush mounted 

 

Weld On Type

Type

Anode (mm)

Net Weight(kg)

Gross Weigh(kg)

10Z

180X60X30

1.0

1.1

30Z

230X78X37

2.2

2.6

50Z

290X100X50

4.8

5.3

110Z

285X145X71

10.1

10.6

 

 

Type

Anode (mm)

Net Weight(kg)

Gross Weigh(kg)

70Z

255X92X45

6.0

6.5

80Z

275X148X32

7.3

8.0

130Z

450X100X62

11.8

13.0

160Z

590X105X48

14.3

16.0

220Z

550X128X50

20.5

22.0

300Z

630X130X55

24.3

26.0

Bolt-on type

 

Type

Dimensions (mm)

Pitch (mm)

Net (kg)

Gross (kg)

B2Z

150X70X20

80

1.4

1.5

B3Z

200X100X20

110

2.4

2.5

B4Z

200X100X30

110

3.4

3.5

B5Z

200X100X40

110

4.1

4.2

B6Z

300X150X20

160

5.5

5.9

B8Z

300X150X25

160

7.1

7.5

B9Z

300X150X30

160

8.8

9.0

B10Z

300X150X40

160

11.1

11.4

B11Z

300X150X50

160

13.5

13.8

B12Z

300X150X60

160

15.9

16.2

B13Z

300X150X70

160

18.3

18.6

B14Z

300X150X75

160

20.0

20.3

B15Z

300X200X40

160

14.8

15,1

B16Z

300X200X45

160

18.3

18.6

B17Z

300X200X50

160

20.3

20.6

B18Z

300X200X55

160

22.1

22.4

B19Z

300X200X60

160

24.3

24.6

B20Z

300X200X65

160

26.4

26.7

Stand-off anodes

 

Type

Dimensions (mm)

Net (kg)

Gross (kg)

ZT50

270X(50+40)X57

4.8

5.4

ZT80

410X(50+40)X57

7.3

8.0

ZT110

520X(50+40)X57

9.1

10.0

ZT130

640X(50+40)X57

11

12.0

ZT150

830X(50+40)X57

14.5

15.6

ZT200

1000X(50+40)X57

18.3

19.6

ZT230

1220X(50+40)X57

21.5

23.0

ZT320

1220X(60+45)X68

30.0

31.5

ZT330

640X(80+75)X95

32.3

33.2

ZT390

750X(80+75)X95

37.8

38.9

ZT520

1000X(80+75)X95

52.3

53.6

ZT630

1220X(80+75)X95

61.6

63.1

Pit guard anodes

 

Type

Dimensions (mm)

Net (kg)

Gross (kg)

ZT50

 270X(50+40)X57

 4.8

5.2

ZT110

520X(50+40)X57

9.1

9.8

 

 

 


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