Common props are aluminum, wood and more recently, carbon fiber. I don't know if c/f is certified for use in certificated aircraft yet but there are Light Sport aircraft and Experimentals with them for sure.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250