Basic Characteristics of Zinc Steel
Zinc steel is a type of steel with a galvanized surface, primarily used for outdoor facilities such as railings and fences. While its core is still steel, the zinc layer alters its interaction with magnets. Ordinary magnets do not react to pure zinc, while steel itself is magnetic. The key lies in the thickness and uniformity of the zinc layer, which directly affects whether a magnet can attract zinc steel.
Why Magnets Don't Attract Zinc Steel
The shielding effect of the zinc layer: Zinc itself is a non-magnetic material; a sufficiently thick zinc layer will isolate the magnet from contact with the internal steel.
Surface treatment process: The complex alloy layer structure formed by hot-dip galvanizing further weakens the magnetic properties.
Actual test phenomena: In most cases, the magnet will slip off the surface of zinc steel, producing only a weak attraction.
Magnetic Performance in Special Cases
Zinc steel may exhibit some magnetism under the following conditions:
Weared areas of the zinc layer exposing the internal steel
Local areas with uneven coating thickness
Newly cut surfaces
Zinc alloy coatings with certain special formulations
