Tantalum has high corrosion resistance. It does not react with hydrochloric acid, concentrated nitric acid and aqua regia under cold and hot conditions. Tantalum can be used to replace stainless steel in the production of various inorganic acids, and its service life can be increased dozens of times than that of stainless steel. In addition, in chemical, electronic, electrical and other industries, tantalum can replace the tasks that need to be undertaken by precious metal platinum in the past, which greatly reduces the cost.