Forming dies and casting models generally run to thousands of dollars. More extruders stock many standard dies , which the customer can use without a die service charge. Extrusion dies can be finished with less lead time than forming dies and casting molds. Aluminum extruders will also store and maintain the die without charge . Most aluminum extrusion dies can be installed in a press quickly, so set up charges are nominal.
Extrusion die life is long.
While many metals can be extruded, aluminum is the best all around extrusion metal because of its unique combination properties . The weight of aluminum is approximately one-third that of copper or brass or steel. Corrosion resistance Aluminum has exceptionally good corrosion-resistance properties. It is self-protected by its own thin, transparent oxide film. Aluminum's natural protective properties and color can be enhanced by chemical or electrochemical means.