What is the relationship between hardness and wear resistance of mold materials?

    There is a close relationship between the hardness of a mold material and its wear resistance.
    In general, the higher the hardness, the better the wear resistance usually is. Hardness refers to the ability of a material to resist external objects pressed into its surface. When the hardness of a mold material is high, its surface is less prone to scratching, abrasion and deformation during contact and friction with the material being processed.

Hardness of mold material

    For example, Cemented Carbide has a high hardness, so it has excellent wear resistance in die applications such as blanking and drawing, and can maintain the accuracy and dimensional stability of the die for a long period of time.

Hardness of mold material

    However, it is important to note that hardness is not the only factor that determines wear resistance. The organizational structure, chemical composition and friction conditions of the material also have an impact on wear resistance.
    Some materials, although hard, may not always exhibit good wear resistance if they have internal defects, are brittle or are subjected to specific friction conditions.
    In addition, excessive hardness may sometimes lead to a reduction in the toughness of the material, making the mold prone to fracture and other forms of failure during use.
    For example, in some of the impact load is large under the conditions, the simple pursuit of excessive hardness may make the mold because of the lack of toughness and rupture, but reduces its service life.
    Therefore, in the selection of mold materials, need to consider the hardness, toughness, wear resistance and specific conditions of use and other factors, in order to achieve the best performance and life.

Hardness of mold material