The carbon fibres are composed of a minimum of 95% of graphite structure. The carbon fibre is generally produced from a polymer called polyacrylonitrile (PAN), which is spun first, and then in successive controlled stages is carboninized at about 1800°C.

The result of this process is a very light fibre (density 1,78 g/cm3), very resistant (Tenacity 4800Mpa, modulus of elasticity 240 GPa) and flexible, therefore it is quite easy to process.

Characteristics of carbon fibre

- Elevated resistance to traction
- Elevated modulus of elasticity (traction and compression)
- Extremely light weight
- Low elongation at break
- Very high flexibility
- Easy to impregnate
- Highly fragile
- High cost
- Low resistance to impact
- Electrical conductivity