GFN-M :  First choice for the parting of nonferrous materials, high temperature alloys (Ni-base, inconel, etc). Single cavity with a strong cutting edge. Used for deep grooving at medium-to-high feeds.  
 
 
Ext. Grooving Int. Grooving Parting
  Designation
W
W±toler
R±0.05		 fg
(min)		 fg
(max)
  Grade
  GFN 4M  4.10  0.04  0.24  0.05  0.20 IC354 IC20

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