| 摘要 |
<p>This Al alloy-plated steel material has a hairline appearance in which a hairline is formed on the surface of the plating layer composed of Si with the remainder being Al and impurities, wherein the deposition amount of the plating layer is 20 to 100 g/m2 per surface, the Si content in the plating layer overall is 5 to 12 mass%, the maximum content of the Si is 12 to 24 mass% in areas in which the thickness of the surface layer of the plating layer is 2 mum, and the hairline has a surface roughness Ra of 0.3 to 2.0 mum in the direction perpendicular to the hairline, a PPI of 0 at a reference level 300 muin, a PPI of less than 10 at a reference level 200 mum, and a PPI of 50 or higher at a reference level 30 mum.</p> |
