What properties are required from a material used in the manufacture of drill heads?

Materials used in the manufacture of drill heads must possess high hardness and wear resistance to withstand the extreme conditions of drilling. They should also exhibit toughness to prevent fracture under impact and thermal stability to endure the heat generated during drilling. Additionally, corrosion resistance is important to ensure durability and longevity, especially in challenging environments. Lastly, a good balance of weight and strength is essential for optimal performance and maneuverability.