Indium wire is very different than the solder wire you find in hardware stores. To me, it’s like comparing a sports car and a go-kart. Each perform differently, are made for a very different set of uses.
Indium wire is used for many unique purposes, such as sputtering target bonding (soldering), indium plating, and forming cryogenic seals. Indium metal has many unique properties that are required by specialized applications.
Indium wire is available commonly from .010” (.25mm) diameter and up. Thin indium wire can be difficult to handle, so make sure you take that into account when selecting the proper size. If it’s .030” wire you’re interested in, here is a link where you can find it online.
By the way: always store wire as shown in the picture, never on end.
Want to learn about other indium forms? Click Here