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The self-repair mechanism of stainless steel

Stainless steel has a unique feature: It is self healing. Due to the alloying elements in the stainless steel, a thin, transparent "passive layer" is formed on the surface. Even if the stainless steel surface is scratched or damaged otherwise, this passive layer, which is only a few atoms thick, instantaneously reforms under the influence of oxygen from air or water. This... go to >> The self-repair mechanism of stainless steel