As we all know, the reason why stainless steel can prevent corrosion is because the chemical element chromium contained in stainless steel has excellent corrosion resistance. Among them, ferritic stainless steel also has this characteristic. The main elements of ferritic stainless steel are chromium (≥10.5%) and iron. Some brands only contain chromium, and some brands contain other elements (such as Mo, Ti, Nb, etc.) to obtain some special properties.
Ferritic stainless steel contains chromium but no nickel, and the price of chromium has historically been relatively stable, making it cheaper and more stable than austenitic stainless steel containing nickel.
Ferritic stainless steel has most of the mechanical properties and corrosion resistance of austenitic stainless steel, and also has many unique properties that are superior to austenitic stainless steel. Therefore, ferritic stainless steel can supplement 304 stainless steel in the stainless steel family (304 is still the most widely used and commonly used grade); replace 200 series stainless steel (usually with better performance);
Due to its special properties, it can replace other materials such as carbon steel, Cu, Zn, Al, plastics, etc. in many fields. It may even become an excellent alternative material in fields where austenitic stainless steel can only be used originally.
Users of ferritic stainless steels often benefit from their technical performance and lower life cycle costs.
The “magnetism” of ferritic stainless steel is not “negative”, but a special property that distinguishes it from other stainless steels.
The well-known standard ferritic stainless steels 409, 410 and 430 are available worldwide. They are very successful in many important applications such as washing machine drums and exhaust systems. In fact, ferritic stainless steel has huge application potential in various fields.
Newly developed ferritic stainless steels such as 439, 441, 444, etc. can be used in a wider range of fields. They can be machined into complex shapes and joined and welded in the most common ways. The corrosion resistance of ferritic stainless steel 444 with added molybdenum to localized corrosion is at least equal to that of austenitic stainless steel 316.
Ferritic stainless steel is an ideal material choice due to its advantages in terms of cost, properties and supply channels.