HY-PRO® CARB Performance Sub-Micrograin Carbide End Mills List HP432 Slotting (Fractional) Hardness – Up to 20 HRC 20 to 30 HRC 30 to 38 HRC 38 to 45 HRC 45 to 55 HRC 55 to 60 HRC Hardened Steels Hardened Steels Alloy Steels Pre-hardened Pre-hardened WorkMaterial Cast Iron Mild Steels Tool SteelsCarbon SteelsTi AlloysSteels Steels HardenedTi AlloysStainless SteelsSteelsHardenedSteels (Annealed) (Solution Treated and Inconel Aged) Ni Based Alloys CuttingSpeed 360 SFM 330 SFM 260 SFM 220 SFM 180 SFM 120 SFM 80 SFM aaDepthD<1/160.1Dof Cut1/16