Chromium Nitride Coated End Mill

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High speed steel is a high carbon tool steel, containing a large dose of tungsten.A typical hss composition is 18 tungsten, 4 chromium, 1 vanadium, 0.7 carbon and the rest, iron.Hss tools have a harness of 62-64 rc.The addition of 5 to 8 cobalt to.

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