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nature : Part IV of the Periodic System group : Deputy group (Ti,) elements. Atomic number 22. Stable isotopes : 46,47,48,49,50. Amu 47.867. The silvery white, extensible. Density 4.5. 1725 ° C melting point. 3260 ° C above the boiling point. Valence 2 +, +3 and +4. In cold water ineffective. Have excellent corrosion resistance, from the atmosphere and water erosion. Various concentrations of nitric acid, H2SO4 and various dilute alkali role is very slow, but dissolved in hydrochloric acid, concentrated sulfuric acid, aqua regia, phosphoric acid, hydrofluoric acid and alkali concentrations of middle solution. The earth and titanium dioxide to two state Titanate exist. A major mineral ilmenite, rutile and titanium magnetite, as perovskite. The titanium mechanical strength than a large iron times than big aluminum almost five times. With the majority of metal alloy can be formed by adding other metals can increase the intensity of titanium, steel adding 0.1% titanium can greatly improve the quality of steel. For steelmaking, and its alloy widely used in civilian and military industry, especially aerospace industry. Titanium tetrachloride can be used or sodium and magnesium reduction in the system.
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