UFC 3-570-06
JANUARY 31 2003
Table 2-9. Estimated Output Current of Sacrificial Anodes
ESTIMATED ANODE CURRENT OUTPUT IN MILLIAMPERES (mA) (SEE NOTE)
ELECTROLYTE RESISTIVITY (OHM-CM)
ANODE
SIZE(INCHES)
WEIGHT 500
1000 2000 4000 8000 16000 32000 64000
MATERIAL
(POUNDS)
High Purity
3x3x5
3
127
64
32
16
8
4
2
1
Magnesium
High Purity
2.75x2.75x26
9
242 121
61
30
15
8
4
2
Magnesium
High Purity
3.75x3.75x60
40
413 206 103
52
26
13
6
3
Magnesium
High Purity
3x3x78
42
456 228 114
57
29
14
7
4
Magnesium
Magnesium
3x3x5
3
102
51
25
13
6
3
2
1
Magnesium
2.75x2.75x26
9
194
97
48
24
12
6
3
2
Magnesium
3.75x3.75x60
40
330 165
83
41
21
10
5
3
Magnesium
3x3x78
42
365 182
91
46
23
11
6
3
Zinc
3x3x5
3
42
21
11
5
3
1
1
0
Zinc
2.75x2.75x26
9
81
40
20
10
5
3
1
1
Zinc
3.75x3.75x60
40
138
69
34
17
9
4
2
1
Zinc
3x3x78
42
152
76
38
19
10
5
2
1
Note: For protection of well-coated steel (single vertical anode, 3 meters (10 feet) from
structure).
2-35
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