Corrosion resistance of stainless steel jewelry?
Stainless steel is a modern material with a development process of more than 60 years. Since the appearance of stainless steel jewelry in recent years, stainless steel has combined the image of modern materials and the outstanding reputation in jewelry application. Well-maintained, stainless steel jewelry won't corrode, pit, rust or wear away, making it the envy of its competitors.
Stainless steel jewelry is a very special metal jewelry. It is very tough and corrosion-resistant. It will not turn black like silver jewelry, nor is it prone to allergies like copper jewelry, nor is it like alloy jewelry. Lead-containing and toxic, stainless steel jewelry has always maintained its color at room temperature for life.
Stainless steel jewelry is made of the same material from the inside to the outside, and has been tested by artificial sweat. Its characteristics are complete and non-corrosion, and it is resistant to strong acid and alkali, and does not change color, fade, allergy, deformation, hard and bright. It is a complete green high-grade environmental protection jewelry that will not have any adverse effects and no harm to the human body. The corrosion resistance of stainless steel jewelry depends on the alloying elements contained in the steel.
Chromium is the fundamental element for stainless steel to obtain corrosion resistance. When the chromium content in the steel reaches about 12%, the action of chromium and the oxygen in the corrosive medium forms a thin oxide film (self-passivation film) on the surface of the steel. , which can prevent further corrosion of the steel matrix. In addition to chromium, the commonly used alloying elements are nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of various uses for the structure and properties of stainless steel.
Its corrosion resistance, toughness and weldability improve with the increase of chromium content, and its resistance to chloride stress corrosion is better than other varieties of stainless steel.
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