Activitate ridicată chimică activitate
Titanium has high chemical activity and produces strong chemical reactions with O2, N2, H2, CO, CO2, water vapor, ammonia, etc. in the atmosphere. When the carbon content is greater than 0.2 percent , hard TiC will be formed in the titanium alloy; When the temperature is high, the interaction with N will also form a TiN hard surface layer; At temperatures above 600 degree , titanium absorbs oxygen to form a hardened layer with high hardness; An increase in hydrogen content can also form a brittle layer. The depth of the hard and brittle surface layer generated by gas absorption can reach 0.1-0.15 mm, and the degree of hardening is 20-30 percent . Titanium also has a high chemical affinity and is prone to adhesion with friction surfaces.
Low termic conductivitate și elasticitate
Termic conductivitate de titan λ= 15.24W/(m · K) is about 1/4 of nickel, 1/5 of iron, and 1/14 of aluminiu, while the thermal conductivity of diverse titan alloys is about 50 percent lower than that of titanium. The elastic modulus of titan is about 1/2 of that of steel, so it has poor rigidity and is prona to deformare. Este nu potrivit pentru face subțire tije și pereți subțiri piese. În timpul tăierii, rebound cantitate pe prelucrat suprafață este mare% 2c despre % 7b {12% 7d ori că din inoxidabil oțel% 2c provocând severă frecare% 2c aderență% 2c și adeziv uzură pe spate față din tăiere unealtă.