Industrial pure titanium contains a large amount of oxygen, nitrogen, carbon and many other impurity elements (such as iron, silicon, etc.). It is essentially a titanium alloy with a low alloy content. Compared with chemically pure titanium, its strength is greatly improved due to its more impurity elements, and its mechanical and chemical properties are similar to stainless steel (but the strength is still lower than that of titanium alloy).
The characteristics of industrial pure titanium are: the strength is not high, but the plasticity is good, it is easy to be formed, stamped, welded, and has good machinability; it has good properties in the atmosphere, seawater, wet chlorine and oxidizing, neutral, and weakly reducing media. The corrosion resistance and oxidation resistance are better than most austenitic stainless steels, but the heat resistance is poor, and the use temperature should not be too high.
Industrial pure titanium is divided into three grades: TA1, TA2, and TA3 according to its impurity content. The interstitial impurity elements of these three industrial pure titanium are gradually increasing, so its mechanical strength and hardness also gradually increase, but the plasticity and toughness decrease accordingly.
The industrial pure titanium commonly used in industry is TA2, because of its moderate corrosion resistance and comprehensive mechanical properties. TA3 can be used when the wear resistance and strength requirements are high. TA1 can be used when better-forming properties are required.
Industrial pure titanium is mainly used for working temperature below 350℃, with little force, but requires good plasticity stamping parts and corrosion-resistant structural parts, such as aircraft skeletons, skins, engine accessories; seawater corrosion-resistant pipelines for ships, Valves, pumps and hydrofoils, seawater desalination system components; chemical heat exchangers, pump bodies, distillation towers, coolers, agitators, tee links, impellers, fasteners, ion pumps, compressor valves and diesel Engine pistons, connecting rods, leaf springs, etc.
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