Hardness is a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied. The higher hardness value, the wear is hardly occurred.

Transverse rupture strength is fracture strength for a bending stress. The carbide with higher TRS value hardly occur fracture caused by bending stress.

Compressive strength is fracture strength for a compressive stress. The carbide with higher compressive strength value hardly occur fracture caused by compressive stress.

Fracture toughness is necessary energy for fracture. The crack of carbide with higher fracture toughness value is hardly spread.

Young’ s Modulus is the ratio of the stress long an axis to the strain. The carbide with higher young’ s modulus is hardly occurred elastic deformation.

Coefficient of thermal expansion is the relative change in length of a material with raising temperature. The deformation value is affected by the coefficient of thermal expansion, accompanying the temperature change.