The density of titanium and titanium alloy is only 4.51, which is smaller than that of steel and only half the weight of steel, but its strength is similar to that of ordinary carbon steel. Titanium belongs to thermodynamically unstable metal, which is very active. Titanium metal can form a natural oxide film (titanium dioxide) with air. This stable, strong adhesion and protective oxide film determines the corrosion resistance of titanium. Therefore, titanium has excellent corrosion resistance. Next, light texture, high tensile strength and good mechanical properties are another excellent characteristics of titanium alloy.
Titanium alloys can be divided into corrosion-resistant titanium alloy, structural titanium alloy, heat-resistant titanium alloy gold and low-temperature titanium alloy according to their uses.
Difference between titanium and stainless steel
1. It can be distinguished by color. Titanium is a little dark, showing a cool color. I think it's cool. Titanium is darker than steel. Steel is white and pale. The two colors are quite distinct.
2. It can also be distinguished by chemical methods, that is, soaking with nitric acid. Titanium does not react, and stainless steel will react strongly once it is put down. The distinction between pure titanium and titanium alloy is difficult to see from the appearance.
3. Titanium can make gray black marks on ceramic tiles, but stainless steel cannot make marks.
4. Titanium has good corrosion resistance: under 550 ℃, titanium alloy is easy to form dense oxide film, so it is not easy to be further oxidized. It has high loss resistance to gas, sea water, steam and some acid, alkali and soft media.
5. Good thermal strength of titanium: the melting point of titanium alloy is 1660 ℃, which is higher than that of iron and has higher thermal strength. It can work under 550 ℃ and has better toughness at low temperature.
6. Titanium processing is difficult: welding, electroplating and cold stretching are very difficult. Welding and electroplating must be carried out in vacuum or under the condition of being filled with inert gas (vacuum ion plating)
Amanda
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