Stainless steel
According to the definition of GB/T20878-2007, the main characteristics of stainless steel, corrosion resistance, and chromium content of at least 10.5%, carbon content of the maximum is not more than 1.2%.
Stainless Steel (Stainless Steel) is short for stainless acid-resistant steel, air, steam, water and other weak corrosion medium or stainless steel; And the chemical corrosion resistant medium (acid, alkali, salt and other chemical etching) corrosion of steel called acid resistant steel.
Because of the difference in the chemical composition of the two and their corrosion resistance is different, ordinary stainless steel is generally not resistant to the corrosion of chemical media, and acid-resistant steel is generally have no rust. The word "stainless steel" does not simply refer to a kind of stainless steel, but means more than one hundred kinds of industrial stainless steel, the development of each stainless steel has good performance in its specific application field. The key to success is first to find out the purpose, and then to determine the right kind of steel. There are usually only six types of steel related to the application field of building construction. They all contain 17 to 22 percent chromium, and the better steels also contain nickel. The addition of molybdenum can further improve the corrosion of atmosphere, especially the corrosion resistance of the atmosphere containing chloride.
In general, the hardness of stainless steel is higher than that of aluminum alloy, the cost of stainless steel is higher than that of aluminum alloy.
