I don't know about you, but one of the greatest joys I get from playing and owning a banjo is taking it out of the case and simply admiring it for a few moments before I play. In particular, I like to look at the intricacies of the inlays in the fingerboard. But then I notice something horrendous on the frets!
Nickel silver alloy is the most common metal used for fret wire for banjos, guitars and mandolins. It is a good material because it conforms to fingerboards well and resists skin acids, oils, and tarnish well. For most players, it is durable and lasts a long time.