Technical data
Magnesium Anode Sizes and Specifications
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Standard CathPro magnesium anode models with weight, dimensions and steel core size, plus chemical composition and electrochemical properties for high potential (ASTM B843-M1C) and standard potential (ASTM B843-AZ63B, H-1) alloys. Length is given for HP (-1.7 V) / H-1 (-1.5 V) alloy at the same weight.
D-shape
D-shape magnesium anodes
| Item No. | Weight | Width | Height | Length(-1.7V / -1.5V) | Core Size(WxT) |
|---|---|---|---|---|---|
| MG-3D3 | 1.36kg (3 lbs) | 89mm (3.5") | 95mm (3.7") | 115/105mm (4.5"/4.1") | 14x1.5mm (0.6"x0.06") |
| MG-5D2 | 2.3kg (5 lbs) | 70mm (2.8") | 76mm (3.0") | 310/300mm (12.2"/11.8") | 14x1.5mm (0.6"x0.06") |
| MG-5D3 | 2.3kg (5 lbs) | 89mm (3.5") | 95mm (3.7") | 189/175mm (7.4"/6.9") | 14x1.5mm (0.6"x0.06") |
| MG-9D2-1 | 4.1kg (9 lbs) | 63mm (2.5") | 67mm (2.6") | 650/640mm (25.6"/25.2") | 14x1.5mm (0.6"x0.06") |
| MG-9D2 | 4.1kg (9 lbs) | 70mm (2.8") | 76mm (3.0") | 565/545mm (22.2"/21.5") | 14x1.5mm (0.6"x0.06") |
| MG-9D3 | 4.1kg (9 lbs) | 89mm (3.5") | 95mm (3.7") | 340/320mm (13.4"/12.6") | 14x1.5mm (0.6"x0.06") |
| MG-14D2 | 6.35kg (14 lbs) | 63mm (2.5") | 66mm (2.6") | 1010/985mm (39.8"/38.8") | 14x1.5mm (0.6"x0.06") |
| MG-17D2 | 7.7kg (17 lbs) | 63mm (2.5") | 66mm (2.6") | 1215/1185mm (47.8"/46.7") | 14x1.5mm (0.6"x0.06") |
| MG-17D3 | 7.7kg (17 lbs) | 89mm (3.5") | 95mm (3.7") | 635/605mm (25.0"/23.8") | 14x1.5mm (0.6"x0.06") |
| MG-17D4 | 7.7kg (17 lbs) | 108mm (4.3") | 102mm (4.0") | 430/410mm (16.9"/16.1") | 20x3.0mm (0.8"x0.1") |
| MG-20D2 | 9.1kg (20 lbs) | 70mm (2.8") | 76mm (3.0") | 1524/1495mm (60.0"/58.9") | 14x1.5mm (0.6"x0.06") |
| MG-20D2-1 | 9.1kg (20 lbs) | 63mm (2.5") | 67mm (2.6") | 1435/1405mm (56.5"/55.3") | 14x1.5mm (0.6"x0.06") |
| MG-32D5 | 14.5kg (32 lbs) | 140mm (5.5") | 146mm (5.7") | 495/470mm (19.5"/18.5") | 20x2.0mm (0.8"x0.08") |
| MG-40D3 | 18.2kg (40 lbs) | 103mm (4.1") | 90mm (3.5") | 1480/1450mm (58.3"/57.1") | 20x2.0mm (0.8"x0.08") |
| MG-48D5 | 21.8kg (48 lbs) | 140mm (5.5") | 146mm (5.7") | 735/700mm (28.9"/27.6") | 20x2.0mm (0.8"x0.08") |
| MG-50D5 | 22.7kg (50 lbs) | 127mm (5.0") | 140mm (5.5") | 791/765mm (31.1"/30.1") | 20x2.0mm (0.8"x0.08") |
| MG-60D3-1 | 27.3kg (60 lbs) | 89mm (3.5") | 95mm (3.7") | 2115/2075mm (83.3"/81.7") | 20x2.0mm (0.8"x0.08") |
| MG-60D4 | 27.3kg (60 lbs) | 106mm (4.2") | 102mm (4.0") | 1515/1485mm (59.6"/58.4") | 20x3.0mm (0.8"x0.1") |
| MG-100D5 | 45.4kg (100 lbs) | 140mm (5.5") | 146mm (5.7") | 1215/1165mm (47.8"/45.9") | 25x3.0mm (1.0"x0.1") |
Square
Square magnesium anodes
| Item No. | Weight | Width | Height | Length(-1.7V / -1.5V) | Core Size(WxT) |
|---|---|---|---|---|---|
| MG-3S3 | 1.36kg (3 lbs) | 97mm (3.8") | 76mm (3.0") | 120/115mm (4.7"/4.5") | 14x1.5mm (0.6"x0.06") |
| MG-5S3 | 2.3kg (5 lbs) | 97mm (3.8") | 76mm (3.0") | 205/195mm (8.1"/7.7") | 14x1.5mm (0.6"x0.06") |
| MG-9S2 | 4.1kg (9 lbs) | 71mm (2.8") | 51mm (2.0") | 750/710mm (29.5"/28.0") | 14x1.5mm (0.6"x0.06") |
| MG-9S3 | 4.1kg (9 lbs) | 97mm (3.8") | 76mm (3.0") | 365/345mm (14.4"/13.6") | 14x1.5mm (0.6"x0.06") |
| MG-17S3 | 7.7kg (17 lbs) | 97mm (3.8") | 76mm (3.0") | 675/650mm (26.6"/25.6") | 14x1.5mm (0.6"x0.06") |
| MG-17S4 | 7.7kg (17 lbs) | 106mm (4.2") | 102mm (4.0") | 432/408mm (17.0"/16.1") | 14x1.5mm (0.6"x0.06") |
| MG-32S5 | 14.5kg (32 lbs) | 127mm (5.0") | 127mm (5.0") | 560/535mm (22.0"/21.0") | 20x2.0mm (0.8"x0.08") |
| MG-48S5 | 21.8kg (48 lbs) | 127mm (5.0") | 127mm (5.0") | 830/795mm (32.7"/31.3") | 20x2.0mm (0.8"x0.08") |
| MG-60S4 | 27.3kg (60 lbs) | 106mm (4.2") | 102mm (4.0") | 1515/1485mm (59.6"/58.4") | 20x3.0mm (0.8"x0.1") |
Round
Round magnesium anodes
| Item No. | Weight | Diameter | Length(-1.7V / -1.5V) | Core Size(WxT) |
|---|---|---|---|---|
| MG-9R2 | 4.1kg (9 lbs) | 95mm (3.7") | 380/360mm (15.0"/14.2") | 14x1.5mm (0.6"x0.06") |
| MG-9R3 | 4.1kg (9 lbs) | 111mm (4.4") | 215/200mm (8.5"/7.9") | 14x1.5mm (0.6"x0.06") |
| MG-17R3 | 7.7kg (17 lbs) | 111mm (4.4") | 410/390mm (16.1"/15.4") | 14x1.5mm (0.6"x0.06") |
| MG-17R4 | 7.7kg (17 lbs) | 127mm (5.0") | 310/295mm (12.2"/11.6") | 20x3.0mm (0.8"x0.1") |
| MG-32R5 | 14.5kg (32 lbs) | 152mm (6.0") | 255/240mm (10.0"/9.4") | 20x2.0mm (0.8"x0.08") |
| MG-48R5 | 21.8kg (48 lbs) | 152mm (6.0") | 375/355mm (14.8"/14.0") | 20x2.0mm (0.8"x0.08") |
| MG-50R4 | 22.7kg (50 lbs) | 127mm (5.0") | 920/900mm (36.2"/35.4") | 20x3.0mm (0.8"x0.1") |
| MG-60R4 | 27.3kg (60 lbs) | 127mm (5.0") | 1105/1080mm (43.5"/42.5") | 20x3.0mm (0.8"x0.1") |
| MG-100R5 | 45.4kg (100 lbs) | 152mm (6.0") | 620/585mm (24.4"/23.0") | 25x3.0mm (1.0"x0.1") |
Electrochemical properties
High potential (HP) and standard potential (H-1)
| Technical Measurement | Performance |
|---|---|
| Open Circuit Voltage (-V) | 1.70 ~ 1.75 |
| Closed Circuit Voltage (-V) | 1.58 ~ 1.62 |
| Current Capacity | 1100 A.h/kg (500 A.h/lbs) |
| Current Efficiency | 50% min. |
| Consumption Rate | 7.9 kg/A.y (17.5 lbs/A.y) |
| Technical Measurement | Performance |
|---|---|
| Open Circuit Voltage (-V) | 1.50 ~ 1.55 |
| Closed Circuit Voltage (-V) | 1.45 ~ 1.50 |
| Current Capacity | 1230 A.h/kg (550 A.h/lbs) |
| Current Efficiency | 55% min. |
| Consumption Rate | 7.1 kg/A.y (15.6 lbs/A.y) |
Open and closed circuit voltages are measured against a saturated calomel electrode.
Chemical composition
ASTM B843-M1C and ASTM B843-AZ63B
| Element | Content (%) |
|---|---|
| Aluminum (Al) | 0.010 max. |
| Manganese (Mn) | 0.500 ~ 1.300 |
| Zinc (Zn) | — |
| Silicon (Si) | 0.050 max. |
| Copper (Cu) | 0.020 max. |
| Iron (Fe) | 0.030 max. |
| Nickel (Ni) | 0.001 max. |
| Single Impurity (Each) | 0.050 max. |
| Other Impurities (Total) | 0.300 max. |
| Magnesium (Mg) | Remainder |
| Element | Content (%) |
|---|---|
| Aluminum (Al) | 5.300 ~ 6.700 |
| Manganese (Mn) | 0.150 ~ 0.700 |
| Zinc (Zn) | 2.500 ~ 3.500 |
| Silicon (Si) | 0.100 max. |
| Copper (Cu) | 0.020 max. |
| Iron (Fe) | 0.003 max. |
| Nickel (Ni) | 0.002 max. |
| Single Impurity (Each) | 0.050 max. |
| Other Impurities (Total) | 0.300 max. |
| Magnesium (Mg) | Remainder |
Buyer questions
Frequently asked questions
What are the dimensions of a 32D5 magnesium anode?
MG-32D5 weighs 14.5 kg (32 lb), with a width of 140 mm, height of 146 mm, length of 495 mm (HP) or 470 mm (H-1) and a 20 x 2.0 mm steel core.
What are the dimensions of a 17D3 magnesium anode?
MG-17D3 weighs 7.7 kg (17 lb), with a width of 89 mm, height of 95 mm, length of 635 mm (HP) or 605 mm (H-1) and a 14 x 1.5 mm steel core.
What are the dimensions of a 48D5 magnesium anode?
MG-48D5 weighs 21.8 kg (48 lb), with a width of 140 mm, height of 146 mm, length of 735 mm (HP) or 700 mm (H-1) and a 20 x 2.0 mm steel core.
What is the current capacity of magnesium anodes?
High potential: 1100 Ah/kg (500 Ah/lb), 50% minimum efficiency, consumption 7.9 kg/A.y. Standard potential H-1: 1230 Ah/kg (550 Ah/lb), 55% minimum efficiency, consumption 7.1 kg/A.y.