{"term":{"id":"00836","title":"carbon fibres type LM","longtitle":"IUPAC Gold Book - carbon fibres type LM","doi":"10.1351\/goldbook.C00836","code":"C00836","status":"current","initialism":"<em>initialism<\/em>: LM","definitions":[{"id":1,"text":"Carbon fibres type LM (low modulus) are carbon fibres with isotropic structure, tensile modulus values as low as $\\pu{10\\%}$ of the \\(C_{11}\\) values of the graphite single crystal, and low strength values.","notes":{"1":"The term carbon fibres type LM is sometimes used for various types of isotropic carbon fibres known as pitch-based or rayon-based carbon fibres that have not been subjected to hot-stretching. Such fibres are not used for reinforcement purposes in high-performance composites."},"links":[{"term":"carbon fibres","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C00831"},{"term":"graphite","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/G02684"},{"term":"isotropic","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/I03353"},{"term":"isotropic carbon","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/I03354"},{"term":"pitch-based","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/P04678"},{"term":"rayon-based carbon fibres","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/R05161"}],"sources":["PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 482 (https:\/\/doi.org\/10.1351\/pac199567030473)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/C00836\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/C00836\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/C00836\/plain"},"citation":"Citation: 'carbon fibres type LM' 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.C00836","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-04-19T05:44:50+00:00"}}