Why Molybdenum in High-Speed Drill Steel?

What’s so special about Molybdenum in drill bits?

Molybdenum is a cost effective and efficient replacement for tungsten in High-Speed steels. It increases hardness and wear resistance maintaining its properties in the high heat generated by the cutting of metals.  With about half the atomic weight of tungsten, 1% of Molybdenum is equivalent to 2% of Tungsten, making it more cost effective.

High Speed Steel

The term High Speed Steel is used when tool steel consists of more than 7% Molybdenum, Tungsten and Vanadium and more than 6% of Carbon. It is largely used in the manufacture of cutting tools such as Drills, Taps & Dies, Saw Blades, Milling Cutters, and Gear Cutters.

The Drill and Tap Doctor

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