When drilling titanium, carbide drill bits are only good for how many holes at 400 RPM?

When drilling titanium, carbide drill bits are noted for their ability to handle the demanding characteristics of this material, which is known for its hardness and toughness. At a speed of 400 RPM, carbide drill bits can achieve a performance of approximately 10 to 15 holes before they begin to show significant wear or degradation in cutting efficiency.

This range is a result of several factors including the heat generated during drilling, the chip formation, and the wear resistance of the carbide material itself. Titanium's properties can lead to rapid wear on drill bits, necessitating careful management of drilling speed and technique to maximize tool life.

While carbide bits might manage more than 15 holes under optimal conditions—such as effective coolant application and precise drilling technique—the generally accepted lifespan at the specified RPM for typical operations lands within the 10 to 15 range. Thus, this is recognized as a practical and safe estimate for maintaining quality drilling results while managing wear on the bits.