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-EPM High Speed Cobalt Powder Metal Tool Material HSS High Speed Steel Tool Material Mill Profile N General Purpose Cutter Type for Low to HighResistance Materials Coarse Pitch Rounded Profile Chipbreaker Coarse Pitch Non-ferrous Cutter Type for SoftMalleable MaterialsHRA Fine Pitch Asymmetrical Rounded ProfileChipbreaker Fine Pitch FS Semi-finishing Profile Chipbreaker Coarse Pitch Asymmetrical Rounded ProfileChipbreaker Coarse Pitch Flat Profile Chipbreaker Non-ferrous Cutter Type with Coarse PitchAsymmetrical Rounded Profile Chipbreaker Number of flutes (NOF) NOF1 Number of Flutes = 1 (single tooth) NOF4-5Number of Flutes = 4 – 5 (teeth) NOF16-24Number of Flutes = 16 – 24 (teeth) NOF2 Number of Flutes = 2 (teeth) NOF5 Number of Flutes = 5 (teeth) 28-44NOF Number of Teeth = 28 – 44 (teeth) NOF3 Number of Flutes = 3 (teeth) NOF4-6Number of Flutes = 4 – 6 (teeth) 32-100NOF Number of Teeth = 32 – 100 (teeth) NOF3= Number of Flutes = 3 (differential pitch) NOF4-8Number of Flutes = 4 – 8 (teeth) 48-200NOF Number of Teeth = 48 – 200 (teeth) NOF3-4Number of Flutes = 3 – 4 (teeth) NOF6-8Number of Flutes = 6 – 8 (teeth) 100-140NOF Number of Teeth = 100 – 140 (teeth) NOF3-5Number of Flutes = 3 – 5 (teeth) NOF6-12Number of Flutes = 6 – 12 (teeth) 110-180NOF Number of Teeth = 110 – 180 (teeth) NOF3-6Number of Flutes = 3 – 6 (teeth) NOF8 Number of Flutes = 8 (teeth) 130-220NOF Number of Teeth = 130 – 220 (teeth) NOF4 Number of Flutes = 4 (teeth) NOF8-12Number of Flutes = 8 – 12 (teeth) 160-350NOF Number of Teeth = 160 – 350 (teeth) NOF4= Number of Flutes = 4 (differential pitch) NOF10-12Number of Flutes = 10 – 12 (teeth) 14