Comparing brass and CFRP

In my research of CFRP (carbon fiber reinforced plastic), there seems to be a lot of conflicting information.

Some sources say that carbon fiber absorbs and dampens vibrations very well and some say that it transmits them.

There is also conflicting data on the matter of thermal expansion. The coefficient of thermal expansion for cfrp seems to depend more on the specific material than cfrp in general. Sometimes it's coefficient of thermal expansion is much lower than that of brass, but sometimes it is similar or slightly higher.

Here is the overview of material properties on MatWeb: Brass: http://matweb.com/search/DataSheet.aspx?MatGUID=d3bd4617903543ada92f4c101c2a20e5 CFRP: http://matweb.com/search/DataSheet.aspx?MatGUID=39e40851fc164b6c9bda29d798bf3726&ckck=1

When you're researching materials one of the most important things to remember is that just because something is made of brass doesn't mean it will have the same properties of another piece of brass. There are a huge number of different alloys of brass, each having very different properties. There are also a huge number of ways to make cfrp. Not only are there many different strengths/grades of raw carbon fiber, but there are also many different weaves, weights of fabric, resins, layering methods, resin infusion methods, etc. All of these different factors affect the properties of the end material.