According to Baidu Encyclopedia, titanium-nickel alloy is an inorganic material, not an organic material. Inorganic materials are usually composed of inorganic elements (such as metals), while organic materials are mainly composed of carbon and hydrogen, such as organic compounds and biomolecules. Titanium-nickel alloy is an alloy composed of metal elements such as titanium and nickel, so it belongs to the category of inorganic materials. This alloy usually has good mechanical properties and corrosion resistance, and is widely used in aerospace, automobiles, medical devices and other fields.

Nickel-titanium alloy is a shape memory alloy, and it is a special alloy that can automatically restore its plastic deformation to its original shape at a certain temperature.