Specifications

H-1 ALLOY CAST MAGNESIUM ANODES, Material according to ASTM AZ63 Standard.

H-1 ALLOY CAST MAGNESIUM ANODES

Supplying Cost Effective Protection
Electrolytic conditions in the soil surrounding a buried structure often determine the type of anodes employed in a cathodic protection system. In lowresistivity soil (under 2000 ohm-cm), Corrpro’s H-1 line of magnesium anodes are the most economical choice. Corrpro Certified H-1 anodes are cast to meet American Society for Testing Materials Standard B80, Alloy AZ63. This unique composition allows for even-current output and efficient protection. The anodes are supplied in three quality grades, all of which produce an open circuit potential of 1.53- 1.55 volts.
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.

Typical Applications
H-1 anodes are recommended for use in low-resistivity soils (typically below 2000 ohm-cm). Because the anodes have a lower driving voltage than high-potential anodes, they are ideally suited for structures where over protection is of concern. Their lowercurrent output also allows these anodes to operate longer than their high-potential counterparts in more conductive environments.

Chemical Composition
Content %
Element	Grade A	Grade B	Grade C
Al	5.3-6.7	5.3-6.7	5.0-7.0
Mn	0.15 min	0.15 min	0.15 min
Zn	2.5-3.5	2.5-3.5	2.0-4.0
Si	0.10 max	0.30 max	0.30 max
Cu	0.02 max	0.05 max	0.10 max
Ni	0.002 max	0.003 max	0.003 max
Fe	0.003 max	0.003 max	0.003 max
Other	0.30 max	0.30 max	0.30 max
Magnesium	Remainder	Remainder	Remainder