Tools made of tool steel have a sufficiently high hardness after heat treatment. For example, tools used for metal cutting are generally above HRC60. The tool can maintain high hardness and good red hardness under the high cutting speed and high temperature heating conditions generated by processing hard materials. Carbon tool steel and alloy tool steel are generally at 180 ℃ ~ 250 ℃, high-speed tool steel at 600
(1) Hardness
Tools made of tool steel have a sufficiently high hardness after heat treatment. For example, tools used for metal cutting are generally above HRC60. The tool can maintain high hardness and good red hardness under the high cutting speed and high temperature heating conditions generated by processing hard materials. Carbon tool steel and alloy tool steel generally maintain a high hardness at an operating temperature of about 180°C to 250°C and high-speed tool steel at about 600°C. Red hardness is a very important property for hot deformation molds and steel for high-speed cutting tools.
(2) Wear resistance
Tool steel has good wear resistance, that is, the ability to resist wear. The tool can keep its shape and size unchanged under the conditions of considerable pressure and friction.
(3) Strength and toughness
Tool steel has a certain strength and toughness, so that the tool can withstand complex stresses such as load, impact, vibration and bending during work to ensure the normal use of the tool.
(4) Other performance
Due to the different working conditions of various tools, tool steel also has some other properties, such as mold steel should also have certain high-temperature mechanical properties, thermal fatigue, thermal conductivity, wear resistance and corrosion resistance.
