What is stainless steel
Stainless steel, as defined in GB/T20878-2007, is a steel characterized by rust resistance and corrosion resistance, with a chromium content of at least 10.5% and a carbon content of no more than 1.2%.
Stainless steel is the abbreviation for stainless steel and acid resistant steel. Steel that is resistant to weak corrosive media such as air, steam, water, or has rust resistance is called stainless steel; And the steel grade that is resistant to chemical corrosion media (such as acid, alkali, salt, etc.) corrosion is called acid resistant steel.
Due to the differences in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid resistant steel generally has rust resistance. The term 'stainless steel' not only refers to a single type of stainless steel, but also refers to over a hundred types of industrial stainless steel, each of which has excellent performance in its specific application field. The key to success is first to understand the purpose and then determine the correct steel grade. There are usually only six types of steel related to the application field of building construction. They all contain 17-22% chromium, and better steel grades also contain nickel. Adding molybdenum can further improve atmospheric corrosion, especially resistance to chloride containing atmospheres.
Generally speaking, the hardness of stainless steel is higher than that of aluminum alloy, and the cost of stainless steel is higher than that of aluminum alloy.
Stainless steel is the abbreviation for stainless steel and acid resistant steel. Steel that is resistant to weak corrosive media such as air, steam, water, or has rust resistance is called stainless steel; And the steel grade that is resistant to chemical corrosion media (such as acid, alkali, salt, etc.) corrosion is called acid resistant steel.
Due to the differences in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid resistant steel generally has rust resistance. The term 'stainless steel' not only refers to a single type of stainless steel, but also refers to over a hundred types of industrial stainless steel, each of which has excellent performance in its specific application field. The key to success is first to understand the purpose and then determine the correct steel grade. There are usually only six types of steel related to the application field of building construction. They all contain 17-22% chromium, and better steel grades also contain nickel. Adding molybdenum can further improve atmospheric corrosion, especially resistance to chloride containing atmospheres.
Generally speaking, the hardness of stainless steel is higher than that of aluminum alloy, and the cost of stainless steel is higher than that of aluminum alloy.
