Aluminum-zinc alloy coated (and other alloy) steel sheets are a kind of coated steel sheets with better corrosion resistance that appear after galvanized steel sheets. The aluminum-zinc alloy structure of the 55% aluminum-zinc steel plate is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 ℃ to form a dense quaternary crystal of aluminum, iron, silicon, and zinc. A strong barrier is formed on the surface of the steel plate, which can effectively prevent corrosion.
The service life of 55% is longer than that of ordinary galvanized steel sheet. According to the research and analysis on the corrosion status of 55% aluminum-zinc-plated steel sheets exposed to the atmosphere for a long time, Bethlehem Steel believes that 55% aluminum-zinc alloy steel sheets have stronger corrosion resistance than ordinary G-90 galvanized steel sheets. 4 times. Under normal circumstances, the uncoated 55% aluminum-zinc alloy steel plate can be used as a relatively gentle roofing material in acid rain and light industrial areas, and it can be guaranteed not to rust for more than 25 years. Even if it is a cut-off section, it is aluminum-plated. The corrosion resistance of the zinc steel sheet is also very good.
Judging from the durability of galvanized and zinc alloy steel sheets, it can be used as a finishing material. Its natural texture and texture effect can give us a real and refreshing feeling, and as time goes by, it The color gradually darkens, reflecting the traces of time.