Which expensive metal is widely used in automotive catalytic converters and surgical tools?

Platinum is the expensive metal widely used in automotive catalytic converters and surgical tools due to its unique properties. In automotive catalytic converters, platinum serves as a catalyst that facilitates the conversion of harmful gases, such as carbon monoxide and unburned hydrocarbons, into less harmful emissions. Its excellent resistance to corrosion and high melting point make it ideal for use in environments exposed to extreme heat and chemical reactions.

In addition to its role in automotive applications, platinum's biocompatibility and resistance to tarnishing make it an excellent choice for surgical instruments. This ensures that tools remain sterile and do not react with bodily fluids, minimizing the risk of infection and complications during medical procedures. These factors contribute significantly to platinum's prominence in both the automotive and medical fields.