O1 steel is a versatile tool steel that is widely used in a range of applications where high hardness, wear resistance, and toughness are required. Some of the typical applications of O1 steel include:

• Knives and cutting tools: O1 steel is a popular choice for making knives and other cutting tools, including blades, chisels, and punches. Its hardness and wear resistance make it ideal for maintaining a sharp edge, while its toughness allows it to withstand repeated use and impacts.
• Tool and die making: O1 steel is commonly used in tool and die making applications, such as for stamping and forming dies, as well as for gauges, jigs, and fixtures. Its hardness and wear resistance make it well-suited for these applications, while its machinability makes it easy to work with.
• Moulds: O1 steel is used in the manufacturing of plastic injection moulds, where its hardness and wear resistance make it ideal for withstanding the high temperatures and pressures of the injection moulding process.
• Machine parts: O1 steel is used for making various machine parts, such as gears, shafts, and bearings, where its hardness and wear resistance can help to reduce friction and increase durability.