3/16" aluminum alloy spool for thermal spray applications. When arc sprayed, aluminum offers superior corrosion protection. This part is primarily used in shoreline and saltwater areas, both spash zone and subsea areas where PH ranges from 8-12. Aluminum coatings can also be used in service with continuous operating temperatures of 1000º F. Recommended spray parameters: 80-100 PSI, 32-34 Volts, 150-650 amps, 6-8" standoff.