H-1 Alloy Buried Magnesium Anode
Electrolytic conditions in the soil surrounding a buried structure often determine the type of anodes employed in a cathodic protection system. In low resistivity soil (under 2000 Ohm-cm), our H-1 line of magnesium anodes are the most economical choice. Corrpro® certified H-1 anodes are cast to meet the American Society for Testing Materials (ASTM)Standard B843, Alloy AZ63. This unique composition allows for even-current output and efficient protection. The anodes are supplied in three quality grades (AZ63B, AZ63C, and AZ63D, also commonly known as H1A, H1B, and H1C, respectively), all of which produce an open circuit potential of negative 1.2- 1.55 volts (CSE).
Special procedures are also employed in the production of the certified H-1 anodes to ensure long-life performance. Lead wires on all three grades of anodes are silver soldered and then potted with a sealant to prevent the intrusion of moisture.
To order the required anode for your structure, indicate the specific grade of H-1 alloy anodes and specify the quantity desired, the anode type and whether they should be packaged or bare. All H-1 anodes are shipped standard with 10 ft. - #12 AWG solid lead wire with black TW insulation, unless otherwise specified. Standard backfill composition consists of 75 percent gypsum, 20 percent bentonite and 5 percent sodium sulphate.
ANODE TYPE | NOMINAL DIMENSIONS | NOMINAL WT. | |||||
“A” in. (mm) | “B” in. (mm) | “C” in. (mm) | “D” in. (mm) | “E” in. (mm) | BARE Lbs. (kg) |
PKGD. Lbs. (kg) |
|
1 cup | 2.9 (74) | - (-) | 3 (76) | 6 (152) | 6 (152) | 1 (0.45) | 3.5 (1.6) |
3S3 | 3 (76) | 3 (76) | 4.5 (114) | 6.5 (165) | 6 (152) | 3 (1.4) | 9 (4.1) |
5S3 | 3 (76) | 3 (76) | 7.5 (191) | 13.5 (343) | 6 (152) | 5 (2.3) | 14 (6.4) |
9S3 | 3 (76) | 3 (76) | 13.5 (343) | 17 (432) | 6 (152) | 9 (4.1) | 24 (10.9) |
17S4 | 4 (102) | 4 (102) | 17 (432) | 19 (483) | 6.5 (165) | 17 (7.7) | 42 (19.1) |
32S5 | 5 (127) | 5 (127) | 21 (533) | 30 (762) | 8 (203) | 32 (14.5) | 70 (31.8) |
50R8 | 8 (203) | - (-) | 15 (381) | 18 (457) | 10 (254) | 50 (22.7) | 11 (49.9) |
Ordering Procedure Example:
ITEM | EXAMPLE |
Quantity | 200 |
Anode material | H-1 magnesium |
Alloy grade | AZ63B (H1A) |
Anode type | 17S4 |
Packaging (bare or packaged) |
Packaged |
Wire length (ft.) (10-ft. = standard) |
10-ft. |
Wire size (stranded or solid) (#12 AWG solid = standard) |
#12 AWG (Solid) |
Wire insulation/color (TW/black = standard) |
TW/red |
Corrpro Technical Support
800.826.7891
Corrpro U.S. Materials
11616 W 59th Street
Sand Springs, OK 74063
Ph: 1.866.CORRPRO
Fax: 713.460.6060
Email: CorrproSales@aegion.com
Corrpro Canada Materials & Corrpower Manufacturing
10848 – 214 Street N.W.
Edmonton, Alberta T5S 2A7
Phone: 780.447.4565
cpcamaterials@aegion.com