Ferritic stainless steel is a stainless steel alloy with excellent corrosion resistance, mechanical properties and processability. It is composed of a ferrite phase and a small amount of austenite phase, which gives it the strength and hardness of ferrite and the corrosion resistance of austenite.
Ferritic stainless steel usually includes two main series, namely ferrochrome series and chromium-nickel series. Chromium-iron series stainless steels contain lower nickel content, while chromium-nickel series stainless steels contain higher nickel content. When used, depending on their composition, ferritic stainless steels can be used over a wide range of temperatures and are better suited to certain applications than other types of steel.
The corrosion resistance of ferritic stainless steel is one of its most notable features. Compared with austenitic stainless steel, the ferrite phase of ferritic stainless steel contains more chromium elements, which will form a dense chromium oxide layer in the air, thus protecting the stainless steel surface from being corroded by most chemicals. In addition, because the chromium element in ferritic stainless steel can improve its corrosion resistance, it can be used in various acid, alkali, salt and oxide environments.
Ferritic stainless steel also has stronger mechanical properties than other types of steel, which makes it excellent in some specific applications. For example, the use of ferritic stainless steel in building and structural engineering can reduce the weight of structural materials, thereby reducing the load on the building without reducing its overall strength and stiffness.
In addition, ferritic stainless steel also has good processing properties and can be made into parts of various shapes and sizes to meet various application requirements. In addition, it is easy to clean and maintain, so it is widely used in medical equipment, food processing equipment, kitchen appliances, etc.
In short, ferritic stainless steel is an excellent alloy material with excellent corrosion resistance, mechanical properties and processability. Due to its excellent performance in many aspects, it has been widely used.
