Sacrificial anodes

Aluminum and Zinc Alloyed Anode Catalogue

Marpo Ltd. is producing a wide range of zinc and aluminum sacrificial anodes and is stocking magnesium anodes for marine and onshore applications. Soft iron anodes can be produced on demand. Our Zinc alloys are the ASTM B-418 type I, equivalent to US MIL A 18001 K and the cadmium free ASTM B-418 type II, and the Alalloy Aluminum alloy with the following compositions and properties:

Composition

Alalloy

ASTM B-418 type I

ASTM B-418 type II

Zinc (%)

2.8 – 6.5

Balance

Balance

Aluminum (%)

Remainder

0.1-0.5

0.005 max

Copper (%)

0.006 max

0.006 max

0.002 max

Silicon (%)

0.10 max

-

-

Iron (%)

0.15 max

0.005 max

0.0014 max

Titanium (%)

0.025 max

-

-

Bismuth (%)

0.02 max

-

-

Indium (%)

0.01–0.02

-

-

Lead (%)

-

0.006 max

0.003 max

Cadmium (%)

-

0.02-0.07

0.003 max

       

Nominal Electromechanical Capacity (Ahr/Kg)

2600

780

780

Nominal Solution Potential (V)

1,1

1,1

1,05

Density (kg/m3)

2710

7000

7000

Apart from our standard alloys listed above, other alloys can be manufactured to meet customer specifications.
The Aluminum and Zinc alloyed anodes listed below, can be found in most of our stock points and all Wilson Walton group factories worldwide.

Table #1. Aluminium Alloyed Flush Mounted Anodes

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

Insert

(mm)

NWT

(kg)t

GWT

(kg)

W131

300

200

95

32

20x3

1.2

1.3

W130

350

270

150

32

40x6

2.6

3.2

W111

500

400

150

32

40x6

4.0

5.0

W114

650

550

130

50

40x6

8.0

9.2

W117

650

550

130

65

50x6

10.1

11.6

W119

650

550

130

75

50x6

12.6

14.1

W118

650

550

130

95

50x6

16.5

18.0

W124

1015

920

130

50

50x6

13.0

15.4

W126

1015

920

130

75

50x6

21.0

23.4

W128

1015

920

130

105

50x6

30.0

32.4

Table #2. Zinc Alloyed Flush Mounted Anodes

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

Insert

(mm)

NWT

(kg)t

GWT

(kg)

WP3

300

200

95

30

40x3

3.1

3.2

W6Z

350

270

150

32

40x6

6.5

7.1

W11Z

500

400

150

32

40x6

10.8

11.8

W14Z

650

550

130

50

40x6

21.3

22.5

W17Z

650

550

130

65

50x6

25.0

26.5

W18Z

650

550

130

95

50x6

42.6

44.1

W19Z

650

550

130

75

50x6

33.0

34.5

W24Z

1015

920

130

50

50x6

35.0

37.4

Table #3. Zinc Alloyed Flush Mounted Anodes (drop shape)

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

Insert

(mm)

NWT

(kg)t

GWT

(kg)

WP1

260

180

60

32

20x3

1.0

1.1

WP2

300

220

75

38

20x3

2.15

2.3

WP5

380

290

100

50

30x5

4.55

5.0

W10Z

400

280

150

75

40x6

10.0

10.7

W16Z

520

420

160

70

40x6

15.0

16.0

Table #4. Aluminium Alloyed Slender Stand-Off Anodes*

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

E

(mm)

F Dia.

(mm)

NWT

(kg)

GWT

(kg)

W110

1225

765

50

40

50

12

4.2

5.3

W156

765

305

70

50

76

12

3.3

3.8

W155

1070

610

70

50

76

12

7.1

8.1

W154

1222

762

70

50

76

12

8.7

10.0

W153

1476

1016

70

50

76

12

11.6

13.1

W152

1730

1270

70

50

76

12

14.5

16.3

W151

1984

1524

70

50

76

12

17.3

19.3

W196

765

305

95

75

85

12

5.8

6.5

W195

1060

600

95

75

85

12

12.2

13.1

W194

1210

750

95

75

85

12

15.0

16.1

W193

1465

1005

95

75

85

12

20.2

21.5

Table #5. Zinc Alloyed Slender Stand-Off Anodes*

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

E

(mm)

F Dia.

(mm)

NWT

(kg)

GWT

(kg)

WT50Z

1676

1219

63

57

12

19

21.0

22.5

WT70Z

1676

1219

76

68

12

23

30.0

32.0

WT90Z

1676

1219

82

78

12

25

40.0

42.0

*Anode lengths given on tables 4 and 5 are standard, but other lengths can be supplied to order

Table #6. “C” Clamp Mounted Slender Stand-Off Anodes

(Pit Guard)

Type

Alloy

A

(mm)

B

(mm)

C

(mm)

F Dia.

(mm)

NWT

(kg)

AT2235

Aluminium

193

70

76

2.25

2.25

AT2235/1

Aluminium

386

70

76

4.5

4.5

AT2235/2

Aluminium

344

70

76

4.0

4.0

ZT2247

Zinc

332

70

76

10.0

10.0

Table #7. Standard Bolted Anodes

Aluminum Alloy

Zinc

Alloy

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

F

(mm)

GWT

(kg)

GWT

(kg)

B4

200

100

40

110

50

1.8

4.20

B9E

300

150

40

160

50

4.6

11.0

B9F

300

150

50

160

50

5.5

13.8

B9H

300

150

60

160

50

6.5

16.5

B9G

300

150

65

160

50

7.0

18.0

B12E

300

200

40

160

50

6.6

15.2

B12F

300

200

50

160

50

7.5

18.8

B12H

300

200

60

160

50

9.7

25.0

B12G

300

200

65

160

50

10.7

26.8

Table #8. Aluminum Alloyed Bolted Anodes

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

F

(mm)

NWT (kg)

GWT (kg)

MF 134 E

400

180

40

180

50

7.4

7.8

MF 134 F

400

180

50

180

50

9.3

9.7

MF 134 H

400

180

60

180

50

11.2

11.6

MF 134

400

180

70

180

50

13.0

13.4

Table #9. Aluminum Alloyed Bolted Anodes

Type

A

(mm)

B

(mm)

C

(mm)

D

(mm)

F

(mm)

NWT (kg)

GWT (kg)

RF-118

460

200

64

260

50

11.5

11.8

RF-155

540

200

65

340

50

15.1

15.4

Table #10. Zinc Alloyed Rods

Type

Diameter

(mm)

Length

(mm)

Weight

(kg)

ZR 20

20

300

1.00

ZR 30

30

300

1.70

ZR 40

40

300

3.00

ZR 50

50

300

4.50

ZR 60

60

300

6.20

ZR 70

70

300

8.50

ZR 80

80

300

10.80

ZR 90

90

300

14.00

ZR 100

100

300

16.50

ZR 110

110

300

20.00

ZR 120

120

300

23.80


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