Graphite fiber is certain class of carbon fiber.
Graphite carbon fiber.
Carbon graphite fibres are very stiff strong and light filaments used in polymer usually epoxy matrix composites for aircraft structures and jet engine parts.
They are both carbon based which is why some people tend to use the terms interchangeably.
Carbon fibers or carbon fibres alternatively cf graphite fiber or graphite fibre are fibers about 5 10 micrometres in diameter and composed mostly of carbon atoms.
Satellite sport industry construction and civil engineering.
Nippon graphite fiber corporation pitch based carbon fibre granoc has been used in various applications.
Polymer composites containing carbon fibres are up to five times stronger than mild steel for structural parts yet are five times lighter.
You do have to take note that carbon fiber and graphite are made of the same components.
The atomic structure of carbon fiber is similar to that of graphite consisting of sheets of carbon atoms arranged in a regular hexagonal pattern.
Carbon fibre composites have better fatigue properties and corrosion resistance than virtually every type of metal including the high strength alloys used in airframe and engine components.
The main difference between graphite and carbon fiber is the fact that graphite breaks apart easily while carbon fiber is strong.