Why does the stainless steel wire mesh appear black

Stainless steel wire mesh occasionally turns black during use. What causes this? This is still related to the composition elements of the raw materials. Let's analyze it together.

The so-called main elements of stainless steel are iron, nickel, and chromium. The three metals can be produced in different proportions, and the resulting stainless steel products have different properties and appearances. If the iron content remains unchanged, the higher the chromium content, the brighter the stainless steel wire, and the higher the nickel content, the darker it is. If the chromium and nickel content remains unchanged, the paste content will also become darker if it increases. This is the initial appearance of the product.

If blackening occurs during use, it is caused by oxidation, that is, the iron element contained in it will quickly turn black when heated and oxidized, and there will be no signs of rust.