The Best End Mills for Cutting Hardened Steel Above 60HRC
When machining high-hardness steel, especially mold steel, tool steel, or high-speed steel workpieces above 60 HRC, tool selection becomes critically important. General-purpose end mills often fail under such demanding conditions—rapid wear, chipping, or breakage due to high cutting resistance, extreme temperatures, and hardened microstructures. This can significantly impact efficiency, surface quality, and overall cost. Therefore, […]
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