Magnetic Components: Mainstream, qualified products use neodymium iron boron (NdFeB) magnets, which are highly resistant to demagnetization and have a long lifespan (attenuation <5% after 100,000 opening and closing cycles). Inferior models may use ferrite magnets, which are prone to demagnetization.
Lock Tongue/Contact Components: High-quality products are mostly made of 304 stainless steel, which is corrosion-resistant and wear-resistant. Low-end models may use zinc alloy or ordinary steel, which are prone to deformation and jamming.
Lock Body/Outer Shell: Commonly made of zinc alloy die-casting (moderate strength, easy to form) or aluminum alloy (lightweight, corrosion-resistant). Some industrial/commercial magnetic locks (such as electromagnetic access control systems) use cast iron or engineering plastic outer shells.
Attractor Plate (Armature): This is the non-magnetic part, usually made of iron or low-carbon steel (effectively attracted by magnets), and the surface is often galvanized or powder-coated for rust prevention.