We have a brief note on that at: https://wiki.shapeoko.com/index.php/Materials#260
Online metals has 353 engraver’s brass which is almost as easy to machine as 360 (and lower lead content):
https://www.onlinemetals.com/en/buy/brass-sheet-353
Try it?
Have you seen @wmoy’s two videos on brass? #MaterialMonday on YouTube