1. High strength. Titanium alloy has high strength, its tensile strength is 686-1176MPa, and its density is only about 60% of steel, so its specific strength is very high.
2. High hardness. The hardness HRC of titanium alloy (annealed state) is 32-38.
3. Low elastic modulus. The elastic modulus of titanium alloy (annealed state) is 1.078×10-1.176×10MPa, which is about half that of steel and stainless steel.
4. Excellent high and low temperature performance. At high temperatures, titanium alloys can still maintain good mechanical properties, their heat resistance is much higher than that of aluminum alloys, and their operating temperature range is wide. The current operating temperature of new heat-resistant titanium alloys can reach 550-600°C; at low temperatures , the strength of titanium alloy is increased than that at normal temperature, and it has good toughness. Low-temperature titanium alloy can maintain good toughness at -253°C.
5. Titanium has strong corrosion resistance. In the air below 550℃, a thin and dense titanium oxide film will be quickly formed on the surface of titanium. Therefore, its corrosion resistance is better than that of most stainless steel in oxidizing media such as atmosphere, seawater, nitric acid and sulfuric acid, and strong alkali.
