IMHO, the best material for fret wires that looks like brass is EVO Gold (manufactured by Jescar). Its hardness is between nickel silver and stainless steel. I have them installed on my three new guitars. Highly recommended. You can buy it directly from Jescar, LMI or even e - b a y.
Last edited by bacsidoan on Mon Sep 02, 2013 12:13 pm, edited 1 time in total.
Finding replacement frets can be a tiresome task. Proper measurements of the width and depth of the fret slow must be made. Additionally, the fret height will affect the action and new frets are often higher than the old ones being replaces... which may mean the saddle will need to be raised. I recommend taking several precise measurements of all the need specs then try and find replacements. Stewmac.com and LMII.com carry an array of fret wire.