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Cast
Magnesium Anode
Standard Specification and Test Method
Magnesium anode with high potential is cast from pure magnesium
99.95%. State of the art production techniques manufacture
good open circuit voltage (driving) potential than conventional
H-1 alloy anodes.
Anode Chemistry
ASTM B843 Industry Standard for high potential magnesium anodes-
Alloy M1C.
Each production run is tested as per ASTM specification
G97 Standard Test Method for Laboratory Evaluation of Magnesium
Sacrificial Anode Test Specimens for Underground Applications.
This tests the anodes for voltage potential and current
efficiency performance. The quality magnesium anode should
have a current efficiency of 48 to 55%.
Manufacturing Process
A coiled lead wire of #12 TW insulated solid copper is silver soldered (45% silver) to the galvanized steel core. Standard wire length is 10 feet long. The 45% silver in the solder is critical to insuring a ¡®stronger than the wire itself¡¯ connection.
The core cavity is filled with electrical sealing compound to assure a fully insulated and protected connection.
Bare anodes are centered in cotton bags, then surrounded with a backfill mixture consisting of 75% hydrated gypsum, 20% bentonite, and 5% sodium sulfate.
This backfill lowers the anode to earth resistance, draws moisture to the anode for best performance, and creates a uniform environment for the anode to consume itself evenly.
The packaged anodes are then inserted into multiwall paper sacks, palletized, and film wrapped for shipping.
Soil Anode
Dimensions & Weights
Anode
Type |
Bare
Weight
Lb |
Packaged
Weight
Lb |
Shipping
Package |
Bare |
Packaged |
A
|
B |
C |
D |
E |
| GN 1Lb |
1 |
5 |
6 per box |
1-9/16" |
8" |
|
3-1/4 |
10" |
GN 3D3 |
3
|
9 |
5 per bag |
3-1/2" |
3-1/2" |
5-1/4" |
5 1/2" |
10" |
GN 5D3 |
5
|
14 |
5 per bag |
3-1/2" |
3-1/2" |
9-1/4" |
5 1/2" |
14" |
GN 9D2 |
9 |
35 |
2 per bag |
2-3/4" |
2-3/4" |
26-1/4" |
6" |
31" |
GN 9D3 |
9
|
27 |
2 per bag |
3-1/2" |
3-3/4" |
13-3/4" |
6" |
17" |
GN 17D3 |
17
|
45 |
2 per bag |
3-1/2" |
4" |
25-1/4" |
6-1/2" |
29" |
GN 20D2 |
20
|
72 |
1 per bag |
2-3/4" |
2-3/4" |
56-3/4" |
5-1/2" |
66" |
GN 32D5 |
32
|
72 |
1 per bag |
5-1/2" |
5-3/4" |
20" |
8" |
28" |
GN 48D5 |
48 |
95 |
1 per bag |
5-1/2" |
5-3/4" |
30-1/4" |
8" |
38" |
| GN 50D5 |
50 |
95 |
1 per bag |
7-7/8" |
17-1/2" |
|
10" |
24" |
GN 60S4 |
60 |
125
|
1 per bag |
4-3/4" |
4-3/4" |
57-1/2" |
7" |
64" |
Anode Type |
Weight
Kg |
Diameter
mm |
GN-HP
L mm |
GN-H1
L mm |
Core
W¡ÁT¡ÁL
mm |
Deep of Recess
mm |
GNC36 |
3.6-3.7 |
114 |
210-215 |
202-207 |
25¡Á2 ¡Á190 |
30 |
GNC41 |
4.1-4.2 |
114 |
239-243 |
225-230 |
25¡Á2¡Á190 |
30 |
GNC45 |
4.5-4.6 |
114 |
260-264 |
245-250 |
25¡Á2¡Á210 |
30 |
GNC50 |
5.0-5.1 |
114 |
282-86 |
272-277 |
25¡Á2¡Á210 |
30 |
GNC77 |
7.7-7.8 |
114 |
441-444 |
416-420 |
25¡Á2¡Á332 |
30 |
GNC100 |
10.0-10.2 |
114 |
571-579 |
537-545 |
25¡Á2¡Á428 |
30 |
GNC145 |
14.5-14.7 |
146 |
506-508 |
486-488 |
25¡Á2¡Á428 |
30 |
GNC227 |
22.7-22.9 |
178 |
525-529 |
501-520 |
25¡Á2¡Á428 |
30 |
GNC273 |
27.3-28.2 |
114 |
1545-1588 |
1470-1520 |
25¡Á2¡Á1700 |
50 |
|
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