TORAYCA T1100G high-strength carbon fibre

TORAYCA T1100G is a high-strength carbon fibre from Toray Industries, supplied through Toray Composite Materials America, used as the reinforcement in composite materials for lightweight structures. As a composite material in fibre form, it is processed by the customer into prepreg, filament-wound or laminated parts, and the properties of the finished part depend on the resin and the laminate design.

Toray classifies T1100G as a third-generation carbon fibre. Its distinguishing property is the combination of high tensile strength with intermediate stiffness. Normally, raising strength in a carbon fibre lowers stiffness, and Toray reports that it achieved both together by using a sintering technology that controls the fibre structure at the nano level.

The key figures are a tensile strength of 7.0 GPa (7,000 MPa, 1,015 ksi), a tensile modulus of 324 GPa (47.0 Msi), an elongation of 2.2 percent and a density of 1.79 g/cm3. Compared with the second-generation T800S, with 5.9 GPa and 294 GPa, the maker gives a strength increase of about 20 percent and a modulus increase of about 10 percent. Compared with T700S the increases are 43 percent in strength and 41 percent in modulus. For designers, high strain-to-failure at a given stiffness means thinner laminates for the same load, or more margin at the same thickness.

Toray ran a comparison of flat plates of equal stiffness made with epoxy resin. The T1100G plate was 2.2 mm thick and weighed 10.5 g, against 2.4 mm and 11.7 g for T700S, an 11 percent reduction in thickness and a 10 percent reduction in weight. The thinner plate also withstood more load in a three-point bending test and returned from deflection faster.

For UAV and eVTOL structures this property set supports lighter airframes, booms, spars, rotor arms and landing gear where mass directly reduces payload or endurance. The maker names golf shafts, fishing rods and bicycles on this page, and carbon fibre in general for aerospace and automotive use.