Title: isotropic pitch-based carbon fibres
Long Title: IUPAC Gold Book - isotropic pitch-based carbon fibres
DOI: 10.1351/goldbook.I03355
Status: current

Definition
Carbon fibres obtained by carbonization of isotropic pitch fibres after these have been stabilized (i.e. made non-fusible).

Note
During fabrication of isotropic pitch-based carbon fibres no means (neither mechanical nor chemical) are applied to achieve preferred orientation of the polyaromatic molecules in the fibre direction. They belong to the carbon fibres type LM (low modulus), and because of the relatively low values of strength and Young's modulus this pitch-based carbon fibres type is not used for high-performance reinforcement purposes.

Related Terms
- Carbon fibres: https://goldbook.iupac.org//terms/view/C00831
- Young's modulus: https://goldbook.iupac.org//terms/view/M03966
- carbon fibres type LM: https://goldbook.iupac.org//terms/view/C00836
- carbonization: https://goldbook.iupac.org//terms/view/C00840
- isotropic: https://goldbook.iupac.org//terms/view/I03353
- pitch: https://goldbook.iupac.org//terms/view/P04677
- pitch-based carbon fibres: https://goldbook.iupac.org//terms/view/P04678

Source
- PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 495 (https://doi.org/10.1351/pac199567030473)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/I03355/html
- json: https://goldbook.iupac.org/terms/view/I03355/json
- xml: https://goldbook.iupac.org/terms/view/I03355/xml

Citation: Citation: 'isotropic pitch-based carbon fibres' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.I03355
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Accessed: 2026-04-19T04:08:04+00:00