carbon fibres type LM

Carbon fibres type LM (low modulus) are carbon fibres with isotropic structure, tensile modulus values as low as 10% of the C 11 values of the graphite single crystal, and low strength values.
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.
PAC, 1995, 67, 473 (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 482