Graphite speeds and feeds

[Elmo Crow X]

does anybody have a good reference for s&f for graphite high speed machining

[TKDBB]

We use the following as a starting point

.375 dia 20,000rpm 160/200ipm

.312 dia 25,000rpm 200ipm

.250 dia 30,000rpm 240ipm

.187 dia 35,000rpm 280ipm

.125 dia 40,000rpm 320ipm

.093 dia 45,000rpm 360ipm

 

based on using diamond coated carbide

our spindle maxs out at 45,000 for smaller cutters we decrease feed rate

[Elmo Crow X]

thanks