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  • September 22, 2023

Which is a better drill bit, cobalt or titanium?


The choice between cobalt and titanium drill bits depends on the specific application and material you are working with. Here's a comparison to help you decide:

Cobalt Drill Bits

  • Material: Made of high-speed steel (HSS) with 5-8% cobalt.

  • Durability: Extremely hard and heat-resistant, maintaining their sharpness longer.

  • Best for: Hard metals like stainless steel, cast iron, and other tough materials.

  • Cost: Generally more expensive due to the cobalt content.

  • Resharpening: Can be resharpened without losing their effectiveness.

Titanium Drill Bits

  • Material: High-speed steel (HSS) coated with titanium nitride (TiN).

  • Durability: Less durable than cobalt bits, as the coating can wear off over time.

  • Best for: Softer metals, wood, plastic, and other less tough materials.

  • Cost: Typically less expensive than cobalt bits.

  • Resharpening: Once the coating wears off, the drill bit loses its titanium advantage and performs like a standard HSS bit.

Summary

  • For hard metals: Cobalt drill bits are superior due to their durability and heat resistance.

  • For softer materials and general use: Titanium drill bits are a good choice as they are less expensive and perform well for a wide range of materials.


Choose cobalt drill bits for heavy-duty tasks and titanium drill bits for lighter, general-purpose drilling.

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