carbon fibre

https://doi.org/10.1351/goldbook.C00831
Fibres (filaments, tows, yarns, rovings) consisting of at least 92% (mass fraction) carbon, usually in the non-graphitic state.
Note:
Carbon fibres are fabricated by @[email protected] of organic precursor fibres or by growth from gaseous @[email protected] The use of the term @[email protected] instead of carbon fibres as often observed in the literature is incorrect and should be avoided. The term @[email protected] is justified only if three-dimensional crystalline order is confirmed, e.g. by X-ray @[email protected] measurements.
Source:
PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 480 (https://doi.org/10.1351/pac199567030473)