The purity and the mechanical properties were examined experimentally on crystalline Ti produced by the gaseous reaction between TiCl₄ and Mg. Chemical analysis proved that the purity of the crystalline Ti was nearly as high as that of the iodide process Ti. When a slightly low grade of TiCl₄ or Mg was used as the raw materials too, high purity Ti was obtained due to the effects of distillation followed by the evaporation of TiCl₄ and Mg. The possibility of the admixture of Fe from the construction materials of the reaction was specially studied, and it was found that the admitxure of Fe was extremely reduced by using a graphite lining on the inner surfaces of the conducting pipes of TiCl₄ and by using Ti-coated frames and sleeves. Iron contamination can occur in the case of excess TiCl₄ which may be caused by the fluctuation in the flow rate of both vapors, therefore, when the control of the flow rate was kept precisely constant, the admixture of Fe could be kept below 0.01%.
The hardness of the crystalline Ti was between 82 to 100 in V.H.N. and 85 on an average. Tensile and Charpy impact tests were carried out and their results were 30 to 35 kg/mm² in tensile strength, 13 to 20 kg/mm² in yield strength, 84 to 82% in reduction of area and 58 to 60% in elongation. It was shown that crystalline Ti had excellent mechanical properties such as higher ductility in spite of slightly higher strength than the iodide process Ti. In the impact tests the specimens with a V notch and U notch were not broken in the low temperature range of liquid nitrogen, and the impact value of crystalline Ti was higher as the temperature was lowered.