ASTM A463 Type1 T40 Aluminized Aluminum-Silicon Steel Coil

T1 Aluminized Steel is a new type product which is widely used recent years. It contains 90% aluminium and 10% silicon. Also, it has good heat resistance, heat reflection and corrosion resistance, and its mechanical and physical properties are better than cold-rolled steel sheet. Because of its superior performance, aluminized steel sheet has been widely used in our daily necessities. For example, automobile mufflers, household appliances, etc.

A. High temperature resistance: Because of the special combination of steel plate substrate and coating structure, an iron-aluminum alloy is formed, which makes the aluminized plate have excellent high temperature resistance. High reflectivity can be guaranteed at 450 C. When the temperature is higher than 480 C, the appearance of the coating is grey. The protective layer against oxidation of steel sheet is still well preserved at 650 C without any falling off.

B. Heat Reflectivity: At 480 degrees Celsius, the aluminized sheet can reflect 80% of the heat input. Therefore, the aluminized sheet can be used as an efficient heat insulation barrier or a heat reflector in high temperature applications, which can rapidly increase the temperature in the furnace by effective heat reflection.

C. Mechanical Strength: At room temperature, the mechanical strength of aluminized sheet is the same as that of its base material. At the same temperature of 480 C, the strength of aluminized steel sheet is 10 times than that of aluminium sheet, so the thickness of steel sheet can be reduced by at least 30%.

D. Corrosion resistance: During hot dipping, molten aluminium reacts immediately with oxygen in the air to form an Al2O3 protective layer, which passivates the surface of steel plate immediately. The protective layer is very stable and insoluble in water. Even if the surface of the steel plate is scratched later, the protective layer has self-healing function. Therefore, the aluminized sheet has very strong corrosion resistance to chemical corrosion.
 

1.automobiles, motorcycle mufflers, exhaust pipes and fuel tanks.
2. Burning furnace, heat exchanger, dryer, air conditioner, etc.
3. Household water heaters, gas stoves, breadboxes, chimneys, microwave ovens, food processing machinery, electric ovens, cooking utensils.
4.building covers, walls, roofs and other insulation components.

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