Hot-work die steel with high toughness at low temperatures and high strength at high temperatures and high hardenability and preparation method thereof

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PATENT NO 11959158
SERIAL NO

17501193

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Abstract

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A low-carbon and low alloy hot-work die steel with a high toughness at low temperatures and a high strength at high temperatures and a high hardenability, comprises the following components: C: 0.15-0.35%, Si: 0.40-0.90%, Mn: ≤0.80%, Cr: 1.50-2.40%, Ni: 2.50-4.50%, Mo: 1.00-1.60%, V: 0.10-0.40%, W: 0.20-0.90%, P: ≤0.02%, S≤0.02%, and a balance of Fe matrix and other inevitable impurities. The above percentages are mass percentages. The material of the present invention can have a V notch impact energy of 30 J or more than 30 J at −40° C., a high temperature strength of 380 MPa or more at 700° C., and a hardenability of 200 mm or more to ensure the consistency of internal and external microstructures. The materials of the present invention can be applied to hot-work molds used in special working conditions that require high toughness at low temperatures, high strength at high temperatures and high hardenability.

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Patent OwnerAddress
UNIVERSITY OF SCIENCE & TECHNOLOGY BEIJINGNO 30 XUEYUAN ROAD HAIDIAN DISTRICT BEIJING 100083

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Jinfeng Beijing, CN 12 44
Zhang, Cheng Beijing, CN 365 3456
Zhang, Jin Beijing, CN 374 2212
Zhao, Chao Beijing, CN 139 838

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