Physical Properties Of Titanium
Jul 26, 2022
Titanium is an important alloying element in steel and alloy. The density of titanium is 4.506-4.516 grams/cubic centimeter (20℃), which is higher than aluminum and lower than iron, copper and nickel. But the specific strength is at the top of the metal. Melting point 1668±4℃, latent heat of melting 3.7-5.0 kcal/gram atom, boiling point 3260±20℃, latent heat of vaporization 102.5-112.5 kcal/gram atom, critical temperature 4350℃, critical pressure 1130 ATM. Titanium has poor thermal conductivity and electrical conductivity, similar to or slightly lower than stainless steel, titanium has superconductivity, the critical temperature of superconductivity of pure titanium is 0.38-0.4K. At 25℃, the heat capacity of titanium is 0.126 CAL/g atom · degree, enthalpy is 1149 CAL/g atom · degree, entropy is 7.33 CAL/g atom · degree, titanium metal is paramagnetic material, permeability is 1.00004.
Titanium has plasticity, the elongation of high purity titanium can reach 50-60%, the section shrinkage rate can reach 70-80%, but the shrinkage strength is low (that is, the force produced when the shrinkage). The existence of impurities in titanium has a great influence on its mechanical properties, especially the gap impurities (oxygen, nitrogen, carbon) can greatly improve the strength of titanium, significantly reduce its plasticity. The good mechanical properties of titanium as a structural material are achieved by strictly controlling the appropriate impurity content and adding alloying elements.
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