Silver gray metal, specific gravity 4.5, melting point 1668°C.Titanium is a very special metal, very light in texture, but also very strong and corrosion resistant, it does not turn black like silver, at room temperature to maintain its own color for life.Titanium has a melting point similar to platinum, so it is often used in aerospace and military precision components.Add electrical currents and chemical treatments, and you get different colors.Titanium can be colored such as gold, black, blue, brown, and diversified colors. This feature also makes jewelry design more colorful and fashionable. It is widely used in fashion jewelry.No alt text provided for this imageThe lightness of this material is also suitable for earrings. The safety of the material is also suitable for body jewelry.
Steel resistant to corrosion by weak corrosive medium such as air, steam, water and chemical corrosive medium such as acid, alkali and salt.Also known as stainless acid - resistant steel.In practical application, the steel that is resistant to weak corrosive medium is often called stainless steel, and the steel that is resistant to chemical medium corrosion is called acid-resistant steel.Due to the difference in chemical composition, the former is not necessarily resistant to chemical medium corrosion, while the latter is generally rust free.The corrosion resistance of stainless steel depends on the alloying elements contained in the steel.Chromium is the basic element to make stainless steel corrosion resistance, when the content of chromium in steel reaches about 12%, chromium and the oxygen in the corrosion medium, the formation of a very thin oxide film on the surface of steel (self-passivation film), can prevent the steel matrix further corrosion.In addition to chromium, common alloy elements include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc.No alt text provided for this image
Stainless steel is usually divided into: (1) ferritic stainless steel.Contains 12% ~ 30% chromium.Its corrosion resistance, toughness and weldability increase with the increase of chromium content.(2) austenitic stainless steel.Chromium content is more than 18%, but also contains about 8% nickel and a small amount of molybdenum, titanium, nitrogen and other elements.Good comprehensive performance, can withstand many kinds of medium corrosion.(3) austenitic - ferrite duplex stainless steel.Both austenitic and ferritic stainless steels have the advantages of superplasticity.Martensitic stainless steel.High strength, but poor plasticity and weldability.