UltrAlloy 6020 lead-free aluminum alloy with "A" rated machinability was developed without lead additions to produce small broken chips and a surface finish. This cold-finished aluminum alloy is for applications requiring machinability and moderate strength. Chipping characteristics, combined with tight dimensional tolerances, provide for faster machine speeds. Applications include master cylinder brake pistons, connectors, transmission valves, and hydraulic parts used in the automotive, aerospace, fluid power, and electronic industries.
Alcoa Engineered Products, Wire, Rod & Bar Div., Box 5300, Massena, NY 13662.