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US 12,533,722 B2Granted
Plated steel sheet for hot press forming
AssigneePosco
InventorsHyeon-seok Hwang, Kkochnim Oh
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Abstract
A plated steel sheet for hot press forming with improved hydrogen delayed fracture properties is disclosed. The disclosed plated steel sheet includes a base steel sheet, and a plating layer formed on a surface of the base steel sheet and including, by weight, Si: 5.0 to 15.0%, Zn: 10.0 to 30.0%, Fe: 4.0 to 12.0%, and the remainder including Al and unavoidable impurities.
Claims5
A plated steel sheet for hot press forming, comprising:
- a base steel sheet;
- and
- a plating layer formed on a surface of the base steel sheet and including, by weight, Si:
- 5.0 to 15.0%, Zn:
- 10.0 to 30.0%, Fe:
- 4.0 to 12.0%, and the remainder including A1 and unavoidable impurities,
- wherein the plating layer includes silicon crystals having a silicon concentration of 60 wt % or more, a zinc concentration of less than 20 wt % with respect to 100 wt % of the silicon crystals, and a long axis length of 1 μm or more.
4 more elements
Dependencies are inferred from the claim text.