ULTRAHIGH-STRENGTH REINFORCING BAR AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2022/034964

A1

An ultrahigh-strength reinforcing bar and a manufacturing method therefor are disclosed. In one specific embodiment, an ultrahigh-strength reinforcing bar comprises: 0.10-0.45 wt% of carbon (C), 0.5-1.0 wt% of silicon (Si); 0.40-1.80 wt% of manganese (Mn), 0.10-1.0 wt% of chromium (Cr); vanadium (V) in an amount greater than 0 and less than or equal to 0.2 wt%; copper (Cu) in an amount greater than 0 and less than or equal to 0.4 wt%; molybdenum (Mo) in an amount greater than 0 and less than or equal to 0.5 wt%; 0.015-0.070 wt% of aluminum (Al); nickel (Ni) in an amount greater than 0 and less than or equal to 0.25 wt%; tin (Sn) in an amount greater than 0 and less than or equal to 0.1 wt%; phosphorus (P) in an amount greater than 0 and less than or equal to 0.05 wt%; sulfur (S) in an amount greater than 0 and less than or equal to 0.03 wt%; 0.005-0.02 wt% of nitrogen (N); and the balance of iron (Fe) and other inevitable impurities.

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CHUNG JUN HO (KR)
LEE JU SANG (KR)
KIM ROK SEOK (KR)
LEE CHUNG YEOB (KR)

PCT/KR2020/013596

February 17, 2022

October 06, 2020

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HYUNDAI STEEL CO (KR)

C22C38/58; C21D8/02; C22C38/00; C22C38/06; C22C38/42; C22C38/44; C22C38/46; E04C5/01

KR20200035524A	2020-04-06
KR20200025263A	2020-03-10
KR102100059B1	2020-04-10
KR20160071462A	2016-06-21
JP2000144320A	2000-05-26

AJU INTERNATIONAL LAW & PATENT GROUP (KR)

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