➤ It is not characterized by significant properties that are necessary to ensure the normal functioning of the human body.

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➤ Hafnium 72 - for radiotherapy of carcinomas.

➤ Hafnium 83 for diagnostic radiography.

➤ Hf alloys have been used in surgical practice to create the appropriate inventory for implants.

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➤ Causes irritation of the mucous membranes of the respiratory tract, resulting in coughing and asphyxiation.

➤ There is no specific antidote.

➤ Hafnium is used to capture neutrons in nuclear reactors.

➤ Hafnium is used to make X-ray and television tubes.

➤ Nuclear power uses more than 90% of Hf.

➤ A tantalum alloy with 8% tungsten and 2% hafnium has high strength at temperatures close to absolute zero and over 2000 ^oC.