Tenax HTS40 is a high-tenacity carbon-fibre reinforcement family for composite manufacture. It is available in different filament counts and sizing systems, enabling the reinforcement to be matched to the resin, processing route and structural requirements.
Tenax HTS40 is a high-tenacity carbon fibre family from Teijin Carbon Europe, supplied as continuous filament yarn for composite manufacture. As a carbon fibre reinforcement, it is wound, woven or placed with an epoxy or other resin to make laminates for lightweight structures such as the airframes, booms, arms and housings of large drones and eVTOL aircraft.
The family is a PAN-based standard-modulus fibre sold in several filament counts and sizing systems. The product overview lists HTS40 in 3K (200 tex), 6K (400 tex), 12K (800 tex) and 24K (1600 tex) yarns, and a 12K yarn is also offered with a 10Z twist. The yarn count sets the tow width and the amount of fibre per tow, so smaller tows suit fine woven fabrics and thin laminates, while larger tows suit filament winding, pultrusion and heavier fabrics.
The mechanical figures in the overview are given for the family as 4400 MPa (640 ksi) tensile strength, a tensile modulus of 240 GPa (35 Msi) and 230 GPa (33 Msi) by two test methods, and an elongation at break of 1.8 percent. Density is 1.77 g/cm3 (0.064 lb/in3) and the filament diameter is 7.0 micrometres. For a designer, the strength and modulus together with the density give the specific properties that decide how much laminate mass a structural part needs, and the 1.8 percent elongation indicates how far the fibre strains before it breaks. These are fibre properties, not laminate properties, so allowables must be derived from tests with the chosen resin, fibre volume content and lay-up.
The sizing is part of the product choice. The overview lists the E13 sizing for the 3K and 6K yarns with a size level of 1.3 percent, tagged EP, and the F13 sizing for the 12K and 24K yarns with a size level of 1.0 percent, tagged PU. The sizing protects the filaments in handling and sets compatibility with the matrix, so the sizing type should be matched to the resin system used in prepreg, infusion or winding.
Integration into a manufacturing route depends on the form that is bought. The yarn is delivered as continuous filament, which the buyer or its converter processes into unidirectional tape, woven or non-crimp fabric, prepreg, wound tubes or pultruded profiles.
Typical applications for a standard-modulus high-tenacity carbon fibre include structural tubes, spars, frames, propeller and rotor components, battery enclosures, payload housings and other primary and secondary structures of unmanned aircraft and eVTOL platforms, as well as industrial parts such as pressure vessels and sporting goods.
Specifications
Specifications · Tenax HTS40 high-tenacity carbon-fibre family
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