| Ampco 673 and 674 are wrought zinc-manganese-silicon lead-copper alloys. Both alloys have excellent capacity for hot forming, with hot forgeability ratings of 100. Ampco 674 exhibits a machinability rating of 25%, while Ampco 673 has a considerably higher rating of 80%. This significant difference in the two materials is in the higher lead content of Ampco 673 which increases that alloy's machinability but decreases its tensile and yield values. Applications: Widely specified for a variety of bearing and/or corrosive applications: bushings; gears; cams; nuts and bolts; connector rods; idler shafts and other shafting; worm gears; feed fingers; lead nut screws, etc. |
