Titanium is a very special metal. It looks like steel, but its texture is very light. Its density is only half that of metal iron, but it is very tough.
The melting point of titanium is similar to that of platinum, with a melting point of 1675°C, and it is often used in aerospace and military precision components. The corrosion resistance of titanium is very strong. At normal temperature, titanium can "lie" safely in various strong acids and alkalis. Strong corrosive agent - aqua regia is the strongest acid in chemistry, which can swallow silver and gold, and erode the so-called "stainless" stainless steel, becoming rusty and mottled, beyond recognition. However, "Wang Shui" has nothing to do with titanium.
Titanium soaked in "aqua regia" for several years will still be as shiny as before.
Titanium has low density and high strength. Its density is half that of steel, but its strength is almost the same as steel.
Titanium is resistant to both high and low temperatures. It can maintain high strength and mechanical properties in a wide temperature range of -253°C~500°C. These advantages are exactly what space metal must have. Titanium alloys are good materials for making rocket engine casings, artificial satellites, and spacecraft. Therefore, titanium is known as "space metal".
