M3 steel is commonly used in a variety of high-speed tool applications where hardness, wear resistance, and toughness are critical factors. Some of the typical applications of M3 steel include:

• Cutting tools: M3 steel is often used to make cutting tools such as drills, milling cutters, taps, reamers, and broaches. Its high wear resistance and toughness make it ideal for cutting through tough materials such as stainless steel, titanium, and other high-strength alloys.
• Forming tools: M3 steel is also used to make forming tools such as dies and punches used in stamping, forging, and extrusion applications. Its high hardness and wear resistance make it ideal for withstanding the high stresses and strains involved in these operations.
• Machine tool components: M3 steel can also be used to make machine tool components such as gears, bearings, and spindles. Its high wear resistance and toughness make it ideal for withstanding the high speeds and loads involved in machine tool operations.
• Aerospace and defense applications: M3 steel is often used in the aerospace and defense industries to make components such as turbine blades, rocket motor casings, and missile components. Its high strength, wear resistance, and toughness make it ideal for withstanding the extreme conditions and stresses involved in these applications.