Hot-work Mold Steel-4Cr3Mo2VNiNb
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Hot-work Mold Steel
Grade：
HD
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Product Characteristics
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4Cr3Mo2NiVNb steel is a newly developed hot-work tool steel specially designed to meet working temperatures around 700℃. 4Cr3Mo2NiVNb steel is based on 4Cr3Mo3V steel. Through lowering the contents of Mo and V, adding 1% Ni and 0.15% Nb by mass fraction, it improves room temperature and high temperature toughness and thermal stability, capable of maintaining 40 HRC hardness at 700℃. Under equal hardness conditions, the fracture toughness of 4Cr3Mo2NiVNb steel is 50% higher than that of 3Cr2W8V steel. At 700℃, its tensile strength is 70% higher, and its cold-/thermal-fatigue resistance and hot wear resistance are increased by 1 time and 50%, respectively.
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Industrial Application
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It is applied in steel pharmaceutical tube hot-extrusion punches, copper alloy tube extrusion mold shoes and piercing plugs, hot-extrusion bearing ring punches and dies, valve extrusion mold shoes, etc.
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Company Product Applications
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It is mainly applied to hot-extrusion punches and hot-extrusion molds for ferrous and non-ferrous metals
Common Delivery Condition
Main Specifications
Delivery Condition
Bars are not ultrafined, and supplied in black surface or after turning; blocks are ultrafined, and supplied in black surface or after milling.
Chemical Composition
Mechanical Properties
Delivery Hardness
