Alloy steel is a type of steel alloyed with several elements such as molybdenum, manganese, nickel, chromium, vanadium, silicon, and boron. These alloying elements are added to increase strength, hardness, and wear resistance. Alloy steel is commonly used for CNC machining parts due to its strength and hardness. Typical machine parts made from alloy steel include gears, shafts, screws, bolts, valves, bearings, bushings, flanges, sprockets, and fasteners.”