Austenitic Stainless Steel Coils
Austenitic stainless steel coils are the most widely used type of material, with common grades including 304 and 316. These materials are known for their excellent corrosion resistance and good formability, and are non-magnetic or weakly magnetic. Due to their stable overall performance, austenitic stainless steel coils are widely used in food equipment, medical devices, building decoration, and daily necessities. The 316 grade, in particular, exhibits outstanding resistance to chloride corrosion and is suitable for marine and chemical environments.
Ferritic Stainless Steel Coils
Ferritic stainless steel coils, represented by grades such as 430, possess certain corrosion resistance and good oxidation resistance, while also being relatively inexpensive. These materials are usually magnetic, and their processing performance is slightly lower than that of austenitic stainless steel, but they perform better in resistance to stress corrosion cracking. Ferritic stainless steel coils are often used in appliance panels, automotive trim parts, and applications where moderate corrosion resistance is required but cost is a primary concern.
Martensitic and Duplex Stainless Steel Coils
Martensitic stainless steel coils, such as 410 and 420, have high hardness and strength, but relatively weak corrosion resistance. They are often used in applications requiring high hardness, such as cutting tools and mechanical parts. Duplex stainless steel coils, on the other hand, combine the advantages of austenitic and ferritic stainless steels, possessing both high strength and excellent corrosion resistance. They are suitable for special environments with higher performance requirements, such as petrochemical and marine engineering.