If there's a good discussion or dissertation on this, feel free to point me. What alloy mixes are used, and were used in the earlier days, for frets? I found a lot of generic reference material on line i.e. "a little brass and copper mixed with a lot of steel/iron" but little on actual percentages in a typical mix. I'm doubtful that there's as much steel in there as suggested in view of the amount/speed of fret wear, but who knows. I'm thinking of vintage Fenders and Gibsons, but curious about any related info. Note that I'm ignoring stainless steel. I think I know what they are made of and don't really need to know what mix they are.