Aluminized Steel Vs. Stainless Steel

Aluminized Steel Vs. Stainless Steel

The discussion about aluminized steel vs. stainless steel revolves around a number of factors, which are elaborated in the following paragraphs...
The world we live in today, at least in the urban and developed areas, would not have been half as much if it were not for steel. With its myriad uses in our everyday life, steel has become much more than just a metal for many of us. In this article, we look at the difference between the two most popular forms of steel.
Aluminized Vs. Stainless Steel
Even though both these are varieties of steel, they have distinct characteristics which identify them and determine their uses. There a number of points of differentiation between the two, which are explained below.
Look and Composition
Aluminized steel is low on aesthetics as compared to stainless steel, making it a poor choice in construction. Its properties also do not allow it to be used in industries much. It comes in two forms, Type 1 and Type 2, with Type 1 being coated with a thin layer of aluminum and silicon, and Type 2 being coated with pure aluminum.
Stainless steel, on the other hand, has 3 gradations―ferritic grades (containing chromium and carbon), martensitic grades (containing more than 0.1 percent carbon and chromium), and austenitic grades (containing at least 10 percent nickel). Austenitic grades form the top rung of stainless steel, giving it excellent corrosion-resistance and molding properties.
Thermal Conductivity
Aluminized steel scores a point over stainless steel with its high thermal conductivity. It also comes with an electrostatic surface, making it a viable choice in exhaust systems and mufflers. Stainless steel has a high thermal expansion co-efficient, making it susceptible to shape changes when exposed to too much heat.
Strength
When it comes to corrosion resistance and overall strength, stainless steel comes out trumps. As compared to aluminized steel, it is durable and does not rust. In case of aluminized steel, if the aluminum coat peels off or is broken, it can get corroded.
Cost
Another point of discussion is the economic factor. Aluminized steel is less expensive, as the production cost is less as compared to stainless steel.
Water heaters, ranges, grills, and furnaces are a forte when it comes to aluminized steel. On the other hand, stainless steel is used in kitchen utensils, cookware, tanks, and in construction.