first off if this is the wrong place for this please let me know. i need to cut some sintered tungsten. i have looked on the internet and found feeds and speeds for regular tungsten, and i guess they will have to work, at least for a starting point. the website i found said this:

Milling - Carbide cutters are suggested.
Roughing - feeds of .007" to .015" per tooth at speeds of 200 to 400 SFM
Finishing - feeds of .003" to .010" per tooth at speeds of 300 to 700 SFM

i am using a .5" 4 flute endmill. now for my (really stupid) question, it says .015" per tooth, does that mean the total feed rate will be .06 ipm? or am i not looking at this right? i usually use the material selection feature in my nc software to get close but there isn't a tab for tungsten.

any help would be greatly appreciated
thanks
John

.015 per tooth would mean .060 per revolution when using a 4 flute mill.

IPM = RPM*IPR
RPM = SFM*3.82/D (diameter of cutter)

200(sfm)*3.82 = 764/.5 = 1528

.015*4=.06

1528*.06=91.68IPM