
9 SOLID HM & HSS MILLS – ICONS OVERVIEW General icons Primary use Possible use Material code (BMC) Hard Material (Solid Carbide) High Speed Cobalt Steel Tool Material HSS-E HSS PM High Speed Cobalt Powder Metal Tool Material High Speed Steel Tool Material Mill Profile General Purpose Cutter Type for Low to High N Resistance Materials Coarse Pitch Rounded Profile Chipbreaker Coarse Pitch Non-ferrous Cutter Type for Soft HRA Fine Pitch Asymmetrical Rounded Profile Fine Pitch Malleable Materials Chipbreaker FS Semi-finishing Profile Chipbreaker Coarse Pitch Asymmetrical Rounded Profile Chipbreaker Non-ferrous Cutter Type with Coarse Pitch Coarse Pitch Flat Profile Chipbreaker Asymmetrical Rounded Profile Chipbreaker Number of flutes (NOF) NOF NOF NOF 1 Number of Flutes = 1 (single tooth) 4-5 Number of Flutes = 4 – 5 (teeth) 16-24 Number of Flutes = 16 – 24 (teeth) 28-44 NOF NOF 2 Number of Flutes = 2 (teeth) 5 Number of Flutes = 5 (teeth) NOF Number of Teeth = 28 – 44 (teeth) 32-100 NOF NOF 3 Number of Flutes = 3 (teeth) 4-6 Number of Flutes = 4 – 6 (teeth) NOF Number of Teeth = 32 – 100 (teeth) 48-200 NOF NOF 3= Number of Flutes = 3 (differential pitch) 4-8 Number of Flutes = 4 – 8 (teeth) NOF Number of Teeth = 48 – 200 (teeth) 100-140 NOF NOF 3-4 Number of Flutes = 3 – 4 (teeth) 6-8 Number of Flutes = 6 – 8 (teeth) NOF Number of Teeth = 100 – 140 (teeth) 110-180 NOF NOF 3-5 Number of Flutes = 3 – 5 (teeth) 6-12 Number of Flutes = 6 – 12 (teeth) NOF Number of Teeth = 110 – 180 (teeth) 130-220 NOF NOF 3-6 Number of Flutes = 3 – 6 (teeth) 8 Number of Flutes = 8 (teeth) NOF Number of Teeth = 130 – 220 (teeth) 160-350 NOF NOF 4 Number of Flutes = 4 (teeth) 8-12 Number of Flutes = 8 – 12 (teeth) NOF Number of Teeth = 160 – 350 (teeth) NOF NOF 4= Number of Flutes = 4 (differential pitch) 10-12 Number of Flutes = 10 – 12 (teeth) 14