Carbon fiber was first discovered in the 1970’s when extensive research was happening to find alternative materials for metals. Initially, carbon fibers were not widely accepted due to its limited compression strength and high price. However, today, a lot of developments have been made on carbon fiber, and its use is extensive in various end-use industries such as aerospace & defense, automotive, sporting goods, wind energy, marine, civil engineering, pipe & tank, electrical & electronics, oil & gas, 3D printing, high-speed rail, hydrogen gas storage, and others. Carbon fiber is a long, thin strand of material made from carbon. The carbon content is more than 90% for standard modulus industrial grade and almost 100% for high modulus aerospace grade. Carbon fiber is produced from raw materials such as PAN, pitch, rayon, or other organic fibers.