Galvalume coil /Aluzinc coil / Zincalum coil is Zn-Al alloy coated, and the coating composition is 55% Al, 43.3% Zn, and 1.6% Si. Bseides original color, the aluzinc coil has blue, green, golden and red colors. For its excellent corrosion resistance, this kind of steel is gradually replacing galvanized steel and is widely used all over the world.
The surface is smooth and has excellent atmospheric corrosion resistance. Its atmospheric corrosion resistance is 2-6 times higher than that of the hot-dip galvanized sheet with the same coating thickness. At the same time, it has high temperature corrosion resistance similar to that of the hot-dip aluminum sheet, aluminum-zinc alloy coated steel sheet It can be used for a long time at a high temperature as high as 315℃, and a long-term use at a temperature of 500℃～600℃; it has good water resistance and soil corrosion resistance, and its water corrosion resistance is better than hot-dip galvanized sheet and hot-dip aluminum sheet. Soil corrosion is better than hot-dip galvanized sheet; it has excellent paintability and good processing performance, and its processability and weldability are similar to hot-dip galvanized sheet, can be processed by cold bending, stamping, etc., and has a good appearance .
Aluminum-zinc alloy coated steel sheet has both the characteristics of hot-dip galvanized steel sheet and hot-dip aluminum steel sheet. Therefore, where hot-dip galvanized steel sheet is used, aluminum-zinc alloy coated steel sheet can be used, and it can also partially replace hot-dip aluminum steel sheet. It has a wide range of applications, such as roof panels, wall panels, light steel keels, heating radiators, car bodies, fuel tanks, cable armored steel tapes, plastic greenhouses, granaries, shipping containers, household appliances and appliances, Ovens, explosion-proof steel belts, outer covers of air conditioning and ventilation systems, solar water heaters, packaging boxes for chemical products, and color plate substrates, welded pipes, steel windows, cold-formed steel materials in the metallurgical industry, etc., have a very broad application prospect.
The price of aluminum-zinc alloy coated steel sheet is higher than that of ordinary hot-dip galvanized steel sheet, but because the specific gravity of aluminum is smaller than zinc, the specific gravity of aluminum-zinc alloy coating is only 3.75kg/dm3, while the specific gravity of zinc is 7.1kg/dm3, so the coating weight The thickness of the aluminum-zinc alloy coating of 150g/m2 (double-sided) is the same as that of the hot-dip galvanized steel plate with the coating weight of 275g/m2 (double-sided), which greatly saves the more expensive coating metal.
Super corrosion resistance: the corrosion resistance of the product is 6-8 times that of the general galvanized sheet, and it will not rust for 20 years in various environments;
High temperature oxidation resistance: continuous or intermittent use in a high temperature environment of 315 degrees Celsius will not cause any discoloration or deformation; continuous or intermittent use in a high temperature environment of 490 degrees Celsius will not severely oxidize or produce iron oxide scale;
High heat reflectance: The heat reflectance of the product is higher than 75%, which is twice that of galvanized sheet;
Easy processing: it can meet the processing of stamping, shearing, bending, etc.;
Beautiful appearance: silver white snowflake pattern, beautiful and beautiful, can be used directly without painting;
Surface spraying: It is a good substrate for paint coating. The composite coating of alloy and organic matter can provide more effective protection and prevent corrosion under the organic coating.
Post time: May-24-2021