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US Patent 11338549 Steel sheet for hot press formed member having excellent resistance to hydrogen delayed fracture and method for manufacturing thereof

Patent 11338549 was granted and assigned to POSCO E&C on May, 2022 by the United States Patent and Trademark Office.

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Provided is a steel sheet for a hot press formed member having excellent resistance to hydrogen delayed fracture, and a method for manufacturing the same. A steel sheet for a hot press formed member comprises: a base steel sheet; an aluminum alloy plating layer on a surface of the base steel sheet; and an oxide layer which is formed on a surface of the plating layer and has a thickness of 0.05 μm or more.

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