material and cutting speed

[hdwarner]

all material being cut has an optimal cutting speed based on hardness and
and machinability and tool type whether it is high speed steel or carbide
the optimal cutting speed is usaully defined as s.f.m which can be optained thru tol manufatures or mmaterial sciences
s.f.m, surface feet per minute is the rate you can safely pass the tool over a
workpiece with minimal wear and good cutting action.

s.f.m normally needs to be converted to r.p.m.
revolutions per minute .

when cutting a workpiece the most crucial variable in tool life is s.f.m
second is feed rate of tool or workpiece .
and third is depth of cut .