https://doi.org/10.1351/goldbook.C00835
Carbon fibres type IM (intermediate modulus) are related to value).
carbon fibres type HT
because of the comparable values of tensile strength, but are characterized by greater stiffness (Young's modulus
up to approximately 35% of the theoretical Note:
The tensile modulus ( and , but the disposition of the boundaries is somewhat arbitrary. The relatively high ratio of tensile strength to tensile modulus, typically above , in carbon fibres type IM, in spite of an increase of . Such small filament diameters are typical of carbon fibres type IM.
The tensile modulus (
Young's modulus
) varies between ca. Young's modulus
, requires a further increase of strength, which is achievable by a significant reduction of the monofilament diameter down to about