The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Nov. 05, 2019
Posco, Pohang-si, KR;
Dae-Woo Kim, Pohang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
The present invention relates to pressure vessel steel having excellent hydrogen-induced cracking resistance, and a manufacturing method therefor. One embodiment of the present invention provides a pressure vessel steel having excellent hydrogen-induced cracking resistance, and a manufacturing method therefor, the steel comprising, by wt %, 0.2-0.3% of carbon (C), 0.05-0.50% of silicon (Si), 0.03% or less of manganese (Mn), 0.005-0.1% of aluminum (Al), 0.010% or less of phosphorus (P), 0.0015% or less of sulfur (S), 0.001-0.03% of niobium (Nb), 0.001-0.03% of vanadium (V), 0.001-0.03% of titanium (Ti), 0.01-0.20% of chromium (Cr), 0.01-0.15% of molybdenum (Mo), 0.01-0.50% of copper (Cu), 0.05-0.50% of nickel (Ni), 0.0005-0.0040% of calcium (Ca), and the balance of Fe and other inevitable impurities, wherein the average grain size of ferrite is 5-15 μm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile