The good performance of strength, toughness, hardness, wear resistance and tempering stability with tool steel.Mainly used for the forming of tools and measuring tools, all kinds of cutting tools manufacturing.

(1) hardness

Tool steel tool after heat treatment has high hardness, such as for metal cutting tools is generally more than HRC60.The heating conditions of high temperature and tool generated at high cutting speed and machining of hard materials, can still keep high hardness and good red hardness. Carbon tool steel, alloy tool steel in general working temperature 180 ℃ ~250 ℃, high speed tool steel at 600 ℃, still can maintain high hardness. Red hardness on the thermal deformation of die and the high speed cutting tool steel is very important for performance.

(2) wear resistance

Tool steel with good resistance to wear, or abrasion resisting ability. Tool in under a lot of pressure and frictioncondition, still can maintain its shape and size invariant.

(3) the strength and toughness

A certain strength and toughness steel tool having, the tool can bear load, impact, vibration and bending stresscomplex in the work, to ensure normal use of tools.

(4) other properties

Because of the variety of tools to work under different conditions, tool steel also has a number of other properties,such as mold steel also has a certain degree of high temperature mechanical properties, thermal fatigue, thermal conductivity and corrosion resistant properties.

Tool steel has the performance, but also has good technological properties.

(1) processing

Tool steel with heat pressure and good processability and mechanical properties, in order to ensure themanufacture and use of tools. Steel processing depends on the chemical composition, the organization's quality.

(2) the quenching temperature range

The quenching temperature of tool steel should be wide enough, in order to reduce the possibility of overheating.

(3) hardenability and hardenability

Hardenability is the performance of the steel can achieve the highest hardness after quenching. Hardenability andthe chemical composition of the steel is carbon content, carbon content is higher, is the higher the hardenability of steel.

Hardenability said steel after quenching hardness distribution from surface to inside. High hardenability and the chemical composition of the steel, purity, grain size of.

According to the different tools for manufacturing, have different requirements for the two performance.

(4) decarburization sensitivity

The tool surface decarburization, will make the surface layer hardness decreased, so the low hydraulic steeldecarburization sensitivity. Under the same conditions, steel decarburization sensitivity depends on its chemical composition.

(5) heat treatment deformation

Tool during the heat treatment, the size and shape stability.

(6) chipping resistance

For a manufacturing tool and gauge steel. Must have good grinding. Steel grinding and chemical composition ofvanadium content, especially, if the vanadium content of not less than 0.50% grinding deterioration.