EC-A4 :  4 flute, 30° helix medium length solid carbide endmills. Used for hard materials up to 65 HRc.  
 Hard Materials
 
Shouldering Slotting Ramp down Helical interpolation
  Designation
D
d
ap
L
Flute
Ha°
Rd°
ShankC-Cylindrical		 fz
(min)		 fz
(max)
  Grade
  EC-A4 085-19C10-72  8.50  10.00  19.00  72.00  4  30.0  5.0  C  0.03  0.09 IC903
  EC-A4 090-19C10-72  9.00  10.00  19.00  72.00  4  30.0  5.0  C  0.03  0.09 IC903
  EC-A4 095-19C10-70  9.50  10.00  19.00  70.00  4  30.0  5.0  C  0.03  0.09 IC903
  EC-A4 100-22C10-72  10.00  10.00  22.00  72.00  4  30.0  5.0  C  0.03  0.10 IC903

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