Carbon fiber is 5 times lighter than steel (ASTM-A1008) and almost 2 times lighter than aluminum when comparing similar-sized pieces.
High Strength & Stiffness
Carbon fiber reinforced polymer (CFRP) has the highest specific strength and modulus (stiffness) per density compared to metal, plastic, and wood. (Fig. 1)
Resistance to Corrosion & Chemicals
The epoxy resin is inert and not susceptible to corrosion or rust, and the carbon bonds in the fibers are extremely strong and resistant to oxidization.
Low Thermal Expansion
When metal is exposed to heat, it will expand and weaken which can cause issues and possible failure of the part. Carbon fiber has low thermal expansion.
Low Thermal Conductivity
Metal acts as a conductor, aluminum more than steel, which can transmit or radiate heat to its surroundings and cause heat to soak. Carbon fiber has low thermal conductivity.