Alloy steel the performance characteristic and the USES(4)

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Steel grade	Performance characteristics	Some uses for
4Cr3M03SiV	High hardenability and high temperature hardness and excellent toughness, can replace 3Cr2W8Vuse	For the mode of production of hot extrusion, hot forging dies, hot die
4Cr5MoSiV	Empty cold-hardened hot work die steel, hardenability in temperature (≈600 ℃) Conditions, has good thermal strength, thermal fatigue resistance and abrasion resistance, the choice of a lower quenching temperature air quenching, heat deformation small	Commonly used in the manufacture of aluminum die-casting mold, hot extrusion die, bolt mode, eager side mode, forging mold, press forging dies, plastic molds, and perforation tools with the mandrel, etc.
4Cr5MoSiVl	Widespread use of the empty cold hardening type hot work die steel, with 4Cr5MoSiV , this steel has a higher thermal strength and hardness with good toughness in the temperature conditions, the thermal fatigue resistance and abrasion resistance, and hardenability high heat deformation small	Widely used for hot extrusion dies and mandrels, forging die forging hammer, high-speed precision forging mold insert block, die forging presses, as well as aluminum alloy die-casting mold
4Cr5W2VSi	Empty cold-hardened hot work die steel in temperature has a high hardness and thermal strength, good toughness, wear resistance and thermal fatigue performance	For forging mold, hot extrusion dies and mandrels, punches, and parts forming the high-speed hammer forging die, and other light metals like aluminum, zinc die-casting mold, etc.
7Mnl5Cr2A13V2WMo	High Mn - V- Department of magnets, this can maintain a stable austenitic steel in a variety of state, and very low permeability, high hardness, strength, good wear resistance, but the cutting poor	For the manufacture of non-magnetic mold, non-magneticbearings , and other requirements in the strong magnetic field does not produce the structural components of the magnetic induction, but also for the 700 to 800 ℃
3Cr2Mo	Widely used in pre-hardened plastic mold steel, also known as P20 , good comprehensive mechanical properties, hardenability is high, the larger cross-section of steel to obtain a more uniform hardness, and good polishing performance; steel pre-hardened, manufactured by the cold into a mold, can be used directly	Die-casting mold for the manufacture of large, medium and precision plastic mold, but also for the low melting point alloy (such as tin, zinc, aluminum)
3Cr2NiMo	Widely used in pre-hardened plastic mold steel, commonly known as the P20 + Ni , which means P20steel is added Ni improved grades. The steel has high hardenability, good polishing performance, EDM performance and the striae processing performance; after pre-hardened, and then manufactured by the cold mold can be used directly	Used in the manufacture of large, extra large plastic molds and precision plastic mold, but also for the low melting point alloy die-casting mold