Cast Iron G2 Dura-Bar is a non-ductile, pearlitic gray iron, exhibiting good machinability, wear resistance, and vibration dampening. G2 will not yield nor elongate before fracture.
G2 Dura-Bar can be oil quench hardened from 1600 F (885 C) to a minimum hardness of Rockwell C 50 on the outside of the bar. The inside diameter hardness will be less than Rockwell C 50.
G2 Dura-Bar is manufactured through the Continuous Cast process, which is actually closer to extrusion than casting. However, this process causes all of the impurities in the molten iron to float to the top of the crucible, away from the metal being used to create the bar. This removes porosity and other impurities common to other cast iron grades.
It is typically used in the automotive and power industries for gears, rotors, pistons, valves, rollers, bushings, chucks, flywheels, pile drivers, rams pulleys, housings, and motorcycle disc brakes.