The core method for determining the authenticity of wire mesh material is to combine magnetic testing, surface observation, weight and feel, and professional testing to quickly identify inferior or falsely labeled materials.
Magnet Adsorption Method (Preliminary Screening)
Stainless Steel Wire Mesh: Place a strong magnet close to the mesh surface.
If there is no magnetism or weak magnetism, it is likely genuine 304/316 austenitic stainless steel.
If the magnetism is very strong, it is very likely that cheap 201 stainless steel or "stainless iron" (such as 430) is being used to imitate 304, which has poor corrosion resistance and is prone to rusting.
Note: Cold-worked 304 stainless steel may produce slight magnetism, but it will not be strongly attracted. Combine this with other methods for comprehensive judgment.
Observe Surface Gloss and Cross-Section
High-Quality Material: Smooth surface, uniform color.
304/316 stainless steel has a matte silver-white color and a soft luster.
Aluminum alloys, brass, and copper each have their own unique metallic luster, free from impurities or oxidation spots.
Inferior materials: A dark, bluish surface, or the presence of black spots or rust may indicate recycled material or non-standard alloys.
Uneven cut surfaces, pores, or grayish-black particles suggest recycled aluminum or scrap steel.
