Bismuth was previously considered to be the most stable element with the largest relative atomic mass, but in 2003, it was found that bismuth had extremely weak radioactivity, and its half-life was determined to be 1.9 × 1019. This means that bismuth may not undergo visible decay before the demise of mankind.

Bismuth ingot is a kind of green environmental friendly metal material with light weight, corrosion resistance, easy heat conduction, ductility and recyclability. It is widely used in construction power packaging, transportation, daily consumer goods and other industries.