HTC progressive coat is bronze in color with a hardness reaching 90 rc and a 0.3 coefficient of friction. Progressive coat has up to 750º f thermal stability. Progressive offers improved wear resistance to abrasive, adhesive, or difficult-to-machine materials such as cast iron, aluminum alloys, tool steels, copper, inconel and titanium alloys. As in tin, feeds and speeds can be increased and tool life can be improved by as much as 800% depending on the application, coolant, and other conditions. Progressive is harder and more impact resistance than tin due to its low thermal stability, it is recommended to be used in sufficiently cooled and fabricated cuts.
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