A wrought aluminum-silicon-copper alloy, Ampco 642 alloy has excellent capacity for hot forming, with a hot forgeability rating of 80 and a machinability rating of 60. Joining, using the brazing and arc welding methods, is only fair. Soldering and oxyacetylene welding are not recommended. Applications: valve seats and stems; marine hardware; pole line hardware; bushings and bearings; cams; bolts and nuts; valve bodies and similar components |
ASTM B-150 C64200; Federal QQ-C-465 CA642; Military A-15939A Comp.1; AMS 4634 (thru 3") |