Sacrificial Magnesium anodes
Sacrificial Magnesium anodes are widely used for cathodic protection in underground steel pipelines, tanks, boilers, condensers, water, heatexchangers, ship hulls and marine structures applications, because it has the greatest driving potential of any other metals.
HONGTAI provides a complete serial of both high potential(HP) and normal potential (H1) magnesium anode types and styles for your applicants of CP system. We can also take the specifications as per customers’ requirements.
Sacrificial Mg anode Sacrificial Zn anode Sacrificial Zn anode
High Potential Cast Magnesium Anode
High Potential (HP) Cast Magnesium anode is the best choice for CP systems in high resistivity soil since it is made from the high purity magnesium which provides higher electrochemical and efficiency.
Chemical composition of HP Mg anode, %
|
Alloy |
Al |
Mn |
Si |
Cu |
Ni |
Fe |
Other impurity(each) (max) |
Total Impurities (max) |
|
Mg-Mn |
0.01 |
0.50-1.30 |
0.05 |
0.005 |
0.001 |
0.01 |
0.05 |
0.30 |
Electrochemical properties of HP Mg anode
|
Open voltage(-V) |
Closed voltage(-V) |
Actual capacity(A.h/kg) |
Efficiency (%) |
|
1.70-1.75 |
1.58-1.62 |
1,150 |
50 min |
Normal Potential (H1) Cast Magnesium Anode
Normal Potential (H1) Magnesium anode is used in low resistivity soil.
Chemical composition of H1 Mg anode, %
|
Alloy |
Al |
Zn |
Mn |
Si |
Cu |
Ni |
Fe |
Total of Impurities (max) |
|
AZ63B |
5.30-6.70 |
2.50-3.50 |
0.15-0.70 |
0.10 |
0.02 |
0.002 |
0.003 |
0.30 |
Electrochemical properties of H1 Mg anode
|
Open voltage(-V) |
Closed voltage(-V) |
Actual capacity(A.h/kg) |
Efficiency(%) |
|
1.50-1.55 |
1.45-1.50 |
1,230 min |
55 min |
Specifications and drawings of HP & H1 Magnesium Anodes
“D” Type Cast Magnesium Anode
|
Type |
Weight |
A |
B |
C |
Insert |
|
3D2 |
3lbs |
69.9 |
76.2 |
182 |
Strip |
|
5D2 |
5lbs |
69.9 |
76.2 |
303 |
Strip |
|
9D2 |
9lbs |
69.9 |
76.2 |
547 |
Strip |
|
14D2 |
14lbs |
69.9 |
76.2 |
850 |
Strip |
|
20D2 |
20lbs |
69.9 |
76.2 |
1260 |
Strip |
|
9D3 |
9lbs |
88.9 |
95.25 |
259 |
Strip |
|
17D3 |
17lbs |
88.9 |
95.25 |
657.2 |
Strip |
|
32D5 |
32lbs |
139.7 |
146.05 |
523.9 |
Strip |
|
48D5 |
48lbs |
139.7 |
146.05 |
765.2 |
Strip |
|
60D4 |
60lbs |
114 |
114 |
1520 |
Strip |
* We also take customers’ requirements order.
“R”Type Cast Magnesium Anode
|
Type |
N.W. |
G.W. |
DIA |
Length |
Length |
Insert |
|
R36 |
3.6kg |
3.7kg |
114 |
202 |
193 |
25x2x190 |
|
R41 |
4.1kg |
4.2kg |
114 |
230 |
220 |
25x2x190 |
|
R50 |
5.0kg |
5.1kg |
114 |
280 |
268 |
25x2x195 |
|
R77 |
7.7kg |
7.8kg |
114 |
431 |
412 |
25x2x332 |
|
R100 |
10kg |
10.2kg |
114 |
560 |
536 |
25x2x428 |
|
R145 |
14.5kg |
14.7kg |
146 |
494 |
472 |
25x2x428 |
|
R227 |
22.7kg |
22.9kg |
178 |
520 |
497 |
25x2x428 |
|
R274(I) |
27.3kg |
27.6kg |
178 |
630 |
618 |
25x3x550 |
|
R274(II) |
27.3kg |
27.6kg |
114 |
1528 |
1462 |
25x3x1300 |
*We also take customers’ requirements order.
R Type Mg anode S Type Mg anode S Type Mg anode
"S" Type Cast Magnesium Anode
|
Type |
N.W. |
A |
B |
C |
Insert |
|
3S3 |
3lbs |
76 |
76 |
114 |
Strip |
|
5S3 |
5lbs |
76 |
76 |
191 |
Strip |
|
9S2 |
9lbs |
71.1 |
50.8 |
711 |
strip |
|
9S3 |
9lbs |
76 |
76 |
343 |
Strip |
|
17S3 |
17lbs |
96.5 |
76.2 |
650 |
Strip |
|
17S4 |
17lbs |
102 |
102 |
432 |
Strip |
|
32S5 |
32lbs |
127 |
127 |
533 |
Strip |
|
48S5 |
48lbs |
127 |
127 |
800 |
Strip |
* We also take customers’ requirements order.
Specifications and drawings of HP & H1 Packaged Magnesium Anodes
Above bare Mg anodes could be packed in either carton or plastic bags with backfills consisting of 75% Gypsum, 20% Bentonite and 5% Anhydrous Sodium Sulphate, and connected with PVC/PVC, XLPE/PVC, HMWPE, TW cable and sealed with epoxy resin.
Prepackaged Mg Anode Mg Anode with Cable Prepackaged Mg Anode
Hongtai Packaged Mg anodes are free from environmental pollution for that the harmful elements in the backfill is lower the safety standard. The packaged anodes are ready to be installed which could save the cost and job for users.
Magnesium Ribbon Anode
Magnesium Ribbon Anode has a high current to weight ratio, which mainly used for oil tank, pipelines, and other steel made structures in high resistivity soil.
Chemical composition of magnesium ribbon anode, %
|
Mn |
Zn |
Al |
Cu |
Ni |
Fe |
Si |
Impurities |
Mg |
|
|
Each |
Total |
|
|||||||
|
0.50-1.3 |
---- |
0.01 |
0.02 |
0.001 |
0.03 |
--- |
0.05 |
0.30 |
Bal. |
|
0.20 min |
0.7-1.3 |
2.5-3.5 |
0.01 |
0.001 |
0.002 |
0.05 |
0.05 |
0.30 |
Bal. |
Specification of magnesium ribbon anode
|
Section (inch) |
3/8X3/4± 0.015 (1/8" corner) |
|
Diameter of core (inch) |
0.135 |
|
Core eccentric (inch) |
<1/16 |
|
Weight (lbs/feet) |
0.243 |
|
Standard coil length (feet) |
1000 |
|
Coil weight (lbs) |
243 (110kg) |
Shandong Hongtai Science and Technology Co., Ltd.
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