ALUMINUM BRONZE

AMPCO® 642

Aluminum-silicon bronze alloy

Nominal composition

7%
Aluminium
(Al)
2%
Silicon
(Si)
91%
Copper
(Cu)

DESCRIPTION

A wrought aluminum-silicon-copper alloy used for valve seats and stems, marine hardware, pole line hardware, bushings and bearings, cams, bolts and nuts, valve bodies and similar components.
AMPCO® 642 alloy has excellent capacity for hot forming, with a hot forgeability rating of 80 and a machinability rating of 60.

Fair brazing and arc welding joining, Soldering and oxyacetylene welding are not recommended.

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