Aramid Fiber Composite Materials Have Low Density/low Weight Characteristics

Aramid fibers have extremely low weight, which is an advantage when making composites. While carbon fiber composites themselves are considered very light, aramid fiber composites are about 20% lighter than carbon fiber composites. Using aramid fabrics in composites improves impact and wear resistance and reduces the weight of composite components.

The density of aramid fibers is about 1.45 g/cm³, while the density of aramid and epoxy composites is about 1.3 g/cm³. This calculation is based on the mixed density of epoxy resin and curing agent, which is about 1.1 g/cm³, and the advanced technology used in the production process of composite materials, namely autoclave prepreg. In carbon fiber composites, which are generally considered very light, their density is close to 1.55 g/cm³. In comprehensive comparison, aramid fiber composites are 20% lighter than carbon fiber composites.

How do you compare the weight of aramid fiber composites with metals? Aluminum is 2.7 g/cm³, titanium is 4.5 g/cm³, and steel is 7.9 g/cm³, so aramid fiber composites are 2 times lighter than aluminum, 3 to 4 times lighter than titanium, and 6 times lighter than steel.