The SMDC0041 Ceramic/Ferrite Disc Magnet is made from high-performance C1 Ferrite, without other protective coatings.
Customized Disc Ferrite Magnetic
Ferrite magnets are the lowest-cost hard magnets available at present. They have excellent oxidation resistance and usually do not require additional protective coating or surface treatment.
Their corrosion resistance and susceptibility to magnetization make them popular choices for a wide range of consumer, commercial, industrial, and technological applications.