Used in the processing of molds, due to the wide use of molds, the working conditions of various molds are very different, so the range of materials used to make molds is very wide, the most widely used in mold materials is mold steel. From ordinary carbon structural steel, carbon tool steel, alloy structural steel, alloy tool steel, spring steel, high-speed tool steel, stainless heat-resistant steel to martensitic aging steel and powder high-speed steel that meet the needs of special molds, Powder high alloy die steel. Mold steel can be generally divided into three categories: cold work mold steel, hot work mold steel and plastic mold steel.

Cold work die steel

Cold work die steel is mainly used to make molds for press forming of workpieces under cold conditions. Such as: cold punching die, cold stamping die, cold deep drawing die, embossing die, cold extrusion die, thread pressing die and powder pressing die. The range of cold work die steel is very wide, from various carbon tool steel, alloy tool steel, high speed tool steel to powder high speed tool steel and powder high alloy mold steel.

Hot work die steel

Hot work die steel is mainly used to make molds for pressure processing of workpieces under high temperature conditions. Such as: hot forging dies, hot extrusion dies, die casting dies, hot upset dies, etc. Commonly used hot work die steels are: medium and high carbon alloy die steels with alloy elements such as Cr, W, Mo, and V added; for special requirements of hot work die steels, sometimes high alloy austenitic heat resistant die steel .

Plastic mold steel

Because there are many types of plastics, the requirements for plastic products are also very different, and various performance requirements are also imposed on the materials used to make plastic molds. Therefore, many developed countries have formed a wide range of steel for plastic molds. Including carbon structural steel, carburized plastic mold steel, pre-hardened plastic mold steel, age hardening plastic mold steel, corrosion-resistant plastic mold steel, easy-cut plastic mold steel, integrally hardened plastic mold steel, martensite Aging steel and plastic mold steel for mirror polishing.

Non-magnetic mold steel

Non-magnetic mold steel is a high-manganese vanadium series mold steel, which can maintain stable austenite in various states, has a very low magnetic permeability coefficient, high hardness and strength, better wear resistance, After high and appropriate solid solution and aging treatment, it has better comprehensive performance. Physical properties such as good plasticity, high toughness, large work hardening tendency, large thermal expansion coefficient, large electrical resistivity, low thermal conductivity and low magnetic properties. It has a wide range of applications in non-magnetic construction, non-magnetic machinery, ore dressing and exploration equipment, and military fields.