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) |
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|
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* |
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|
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* |
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|
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 |
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|
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 |
|
