Don't fall folly to many material misconceptions on the market. Most common of these is the 'Carbon Fiber' materials being touted.

See the next page, or click the link, for a detailed material property comparison chart for all of the materials we use.

BLUF: You want ASA if you want the part to last for long time in the sun. No other materials on the market hold up to UV like ASA does. 

Link - > Materials Guide