3. Low elastic modulus. 

Titanium alloy (annealed) has an elastic modulus of 1.078x10-1.176x10MPa, about half that of steel and stainless steel. 

4. Excellent high and low temperature performance. 

At high temperature, Titanium alloy can still maintain good mechanical properties, its heat resistance is much higher than aluminum alloy, and the working temperature range is wide, the current new heat resistant alloy working temperature can reach 550-600℃; At low temperature, the strength of the alloy increases compared with that at normal temperature, and it has good toughness. At low temperature, the alloy can still maintain good toughness at -253℃.

5. Strong corrosion resistance. 

Titanium in the air below 550℃, the surface will quickly form thin and dense oxidation film, so in the atmosphere, seawater, acid and sulfuric acid and other oxidizing medium and strong alkali, its corrosion resistance is better than most stainless.