What is the typical use of high-speed steel drill bits?

High-speed steel (HSS) drill bits are primarily designed for their versatility and strength, making them ideal for drilling through a range of materials, particularly metals and plastics. HSS is known for its ability to withstand higher temperatures, which occur during the drilling process, thus maintaining its cutting edge and effectiveness.

When using HSS drill bits, the cutting process is efficient for various metals due to their sharp edges and durability. They work well for applications involving different types of alloys, steel, aluminum, and plastics, showcasing their broad utility in industrial and construction settings. The geometry of these bits allows for effective chip removal, which is critical when drilling into harder materials like metals.

While HSS drill bits can occasionally be used for softer materials such as wood, they are not optimized for this purpose compared to specialized wood drill bits. Similarly, while certain masonry bits exist, HSS drills are not suitable for drilling into hard materials like concrete or stone. Lastly, drilling glass requires specific tools made of diamond or carbide, as glass is brittle and can fracture easily.

Hence, the primary and best-suited use for high-speed steel drill bits is for drilling metals and plastics.