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What is the chemical composition and classification of mold steel

Die steel is used to make cold die, hot forging die, die casting die and other steel types. Moulds are the main processing tools for manufacturing parts in machinery manufacturing, radio instruments, motors, electrical appliances and other industrial sectors. The quality of the mold directly affects the quality of the pressure processing technology, the accuracy of the product, and the production cost. The quality and service life of the mold are mainly affected by the mold material and heat treatment, in addition to the reasonable structure design and processing accuracy.

Die steel classification

Sweden “ASSAB” mold, steel Germany “Sarster” Gritz mold steel, Austria “Bailu” mold steel, Japan “Hitachi” Datong mold steel, Korean mold steel, Russian mold steel, American “Fincola” mold Steel, American Hastelloy steel, Taiwan tungsten steel, Japanese cemented carbide, American Kennametal tungsten steel.

Die steel

H13 is hot work die steel, which implements the standard GB/T1299-2000. The unified digital code is T20502; the brand is 4Cr5MoSiV1; alloy tool steel is abbreviated as Hegong steel, which is a steel grade formed by adding alloying elements on the basis of carbon steel. Among them, composite steel includes: steel for measuring tools and cutting tools, steel for impact-resistant tools, cold work die steel, hot work die steel, non-magnetic die steel, and plastic die steel.

Chemical composition of H13 die steel

C0.32~0.45, Si0.80~1.20, Mn0.20~0.50, Cr4.75~5.50, Mo1.10~1.75, V0.80~1.20, p≤0.030, S≤0.030;

H13 mold steel use

H13 die steel is used to manufacture forging dies with high impact load, hot extrusion dies, precision forging dies; die-casting dies for aluminum, copper and their alloys.

It is the introduction of H13 air quench hardening hot work die steel from the United States. The long-term performance and use are basically the same as 4Cr5MoSiV steel, but because of its higher vanadium content, the medium temperature (600 degrees) performance is better than 4Cr5MoSiV steel. It is a representative steel grade with a wide range of uses in hot work die steel.

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