High-strength low-carbon bainitic fire-resistant steel and preparation method thereof

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United States of America Patent

PATENT NO 11761050
SERIAL NO

17340644

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Abstract

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A high-strength low-carbon bainitic fire-resistant steel and a preparation method thereof, belong to the technical field of low-carbon air-cooled bainitic fire-resistant steels. The problems of low yield strength, complicated production process and poor high-temperature mechanical properties of the fire-resistant steel in the prior art are solved herewith. The high-strength low-carbon bainitic fire-resistant steel disclosed herein have chemical components by mass percent of: 0.07%-0.1% of C, 0.7%-0.9% of Si, 1.0%-1.5% of Mn, 0.7%-0.8% of Cr, 1.0%-1.3% of Ni, 0.3%-0.35% of Cu, 0.6%-0.8% of Mo, 0.025%-0.035% of Nb, 0.09%-0.15% of V, 0.01%-0.015% of Ti, <0.2% of Nb+V+Ti, <0.02% of Alt, <0.003% of S, <0.008% of P, and the balance is Fe and inevitable impurities. Improvements are realized in the yield strength and high-temperature mechanical properties of the fire-resistant steel.

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Patent Owner(s)

Patent OwnerAddress
ADVANCED STEEL TECHNOLOGY CO LTDNO 19 DALIUSHU SOUTH VILLAGE HAIDIAN DISTRICT BEIJING 100081
CENTRAL IRON & STEEL RESEARCH INSTITUTE COMPANY LIMITEDNO 76 XUEYUAN SOUTH ROAD HAIDIAN DISTRICT BEIJING 100081

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Yanguang Beijing, CN 1 0
Chen, Ying Beijing, CN 944 21963
Du, Jingjing Beijing, CN 3 1
Li, Zhaodong Beijing, CN 3 2
Wang, Huimin Beijing, CN 13 66
Yang, Zhongmin Beijing, CN 27 36

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