Originally Posted by
Delw
Shane
I run 303 slower than 304 with sandvik tools, its more of a personal preference for me. the reason is 303 is really abrasive and tends to wear the tip of the insert down faster than 304 does, yes 304 is tougher to cut but it runs smoother than 303 especially on cut off and facing tools.
one machine (omni turn )we run 303 in runs only oil and that machine we can run a cut off blade for 1 year(micro 100 cut off blades) on 303 and not worry about wearing it out. it runs every day on 3/16 dia to 5/8 dia 303 stock.
it runs a .025-.050 chamfer depending on part dia. and cut off .
used to cut tons of 303 in 2" and up( in bigger lathes) and I always cut down the SF on 303 vs 304 for the same reason.
Delw