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AssigneeUnionsteel Manufacturing Co., Ltd.,
InventorsJanghyun Choi, Byeongmoon Lim, Jeonghee Choi, Seonjin Chin, Jaein Jeong
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A production method for an aluminum alloy coated steel sheet. The aluminum alloy coated steel sheet is improved in appearance, corrosion resistance and workability resulting from dipping a base steel sheet into an aluminum alloy coating bath with a Si content of 7 to 15 parts by weight, a Cr content of 0.5 to 1.5 parts by weight and a Mg content of 0.46 to 3.0 parts by weight. Because of excellent workability, peeling of a coating layer and cracks of a coating film are reduced upon press working, thereby corrosion resistance being improved even after working. As a result, car mufflers, heat resistant home electric appliances, etc. having improved corrosion resistance can be produced.
A production method for an aluminum alloy coated steel sheet, comprising dipping a base steel sheet into a coating bath of an Al—Si—Cr—Mg bath composition with a Si content of 7 to 15 parts by weight, a Cr content of 0.5 to 1.5 parts by weight and a Mg content of 0.46 to 3.0 parts by weight.
Dependencies are inferred from the claim text.