Al-plated steel sheet used for hot pressing and method for manufacturing Al-plated steel sheet used for hot pressing
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Dec 10, 2014
filing date -
Dec 12, 2013
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Abstract
Provided is an Al-plated steel sheet used for hot pressing that has excellent lubricity in hot state, corrosion resistance after paint coating, and spot weldability. An Al-plated steel sheet used for hot pressing includes: a steel sheet; an Al plating layer formed on one surface or both surfaces of the steel sheet; and a surface coating layer formed on the Al plating layer. The surface coating layer contains a zinc compound, and the zinc compound is deposited on the Al-plated steel sheet in an amount of equal to or greater than 0.3 g/m2 and equal to or less than 1.5 g/m2 as an amount of metallic zinc per one surface, and a zinc deposition amount in any continuous 1 mm2 region is 1.5 g/m2 or less.
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