Tool Steel Supplier

The plastic injection moulding process produces large numbers of parts of high quality with great accuracy, very quickly. Plastic material in the form of granules is melted until soft enough to be injected under pressure to fill a mould. The result is that the shape is exactly copied. Once the plastic moulding has cooled sufficiently to harden the injection mould opens releasing the part. The whole injection moulding process then repeats. CLOSE MOULD CLAMPING – the moving and fixed platens of the injection moulding machine hold the mould tool together under pressure. INJECT MOLTEN PLASTIC INJECTION – the molten plastic that has been melted from pellet form in the barrel of the moulding machine is injected under pressure into the mould. HOLD MOULD CLOSED DWELLING – after the molten plastic has been injected into the mould, the pressure is applied to ensure all cavities are filled. COOLING – the plastic parts are then allowed to solidify in the mould. OPEN MOULD &...

P20, a 4130, 4135 modified material, has long been the steel of choice for pre-hardened mold steels. P20 is classified as a chrome-moly alloy, with a carbon content of approximately 0.30 to 0.40. Over time, many variations on basic P20 chemistry have been introduced to the marketplace. Each modification can have an effect on the various processes used in the fabrication of a mold. Types of Material The moldmaking industry in the U.S. is Eurocentric in nature. European immigrants came to the U.S. with trade backgrounds and had a large influence on the mold building industry. They naturally gravitated to building molds with the chrome-moly steels they were used to, such as DIN 1.2311 and DIN 1.2312, or their close cousin, AISI P20. Basically, China's moulds can produce all kinds of moulds according to the requirements of customers. P20 differs from region to region in the worldwide market. Europeans generally use the DIN spec materials (1.2311 and 1.2312), while in Japan, PX5...

What is  P20  Steel ? AISI  P20 Steel Plate  Material is a versatile, low-alloy  tool steel  that is characterized by good toughness at moderate strength levels. The special purpose mold steel P20 steel plate is commonly used for plastic injection mold cavities and tooling and for die casting dies for zinc. P20 mold steel plate material is typically sold in the pre-hardened condition at a hardness of approximately 300 HBW. P20 tool steel differs from area to area in the different countries.Europeans generally use the DIN spec- DIN EN ISO 4957 standard materials (1.2311 and 1.2312), while in Japan steel industry standard, PX5 is the new standard P20. And the Americas Countries, Grade steel  P20  is the most and wide used steel grade material. In China, 3CrM2Mo is the P20 steel grade equivalent, which is in the standard GB/T 1299 tool steel specification. AISI P20 tool steels are nitrided or carburized. These P20 mold steel materials stee...