ALUMINUM-BASED PLATED STEEL PLATE FOR HOT PRESS HAVING EXCELLENT RESISTANCE AGAINST HYDROGEN DELAYED FRACTURE AND SPOT WELDABILITY, AND METHOD FOR MANUFACTURING SAME
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United States of America
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Jan 9, 2025
app pub date -
Sep 10, 2024
filing date -
Sep 10, 2024
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Abstract
The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe3Al, FeAl(Si), Fe2Al5, and FeAl3; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 μm and an oxygen content of 10 weight % or less, as measured by GDS, at a depth of 0.1 μm from the surface of the plating layer.
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