The Density of Carbon Fiber constant displays the value of density for carbon fiber (2000 kg/m3).
Density is defined as the mass per unit volume. The density (ρ) of a substance equals the total mass (m) of that substance divided by the total volume (V) of that substance. The standard SI unit is kilograms per cubic meter (kg/m3) and the standard English unit is pounds mass per cubic foot (lbm/ft3). Most densities are listed at atmospheric pressure (ATM).
The density of carbon fiber is 2000 kg/m3.
Material Properties (https://material-properties.org/carbon-fiber-density-strength-melting-point/)