Carbon/Epoxy composites are high-performance materials designed for structural components requiring lightweight strength, stiffness, and fatigue resistance. In tubular form, they combine directional fiber reinforcement with epoxy resin to provide outstanding mechanical and thermal stability. These properties make Carbon/Epoxy Composite tubes indispensable in aerospace, automotive, and mechanical engineering industries where dimensional precision and weight reduction are critical.
Material Overview
Carbon/Epoxy Composite tubes are produced by embedding continuous carbon fibers within an epoxy polymer matrix, forming a high-modulus, corrosion-resistant composite. The resulting material exhibits tensile strengths exceeding 550 MPa, modulus values above 70 GPa, and thermal stability up to 350 °C depending on the fiber lay-up and curing conditions. Ibadi et al. (2024) reported that Carbon/Epoxy composites made with LY-5052 epoxy show gradual tensile strength reduction from 553 MPa at room temperature to 242 MPa at 200 °C, highlighting predictable thermal degradation behavior. Similarly, Im et al. (2023) found that these composites maintain stiffness and dimensional stability under extreme temperature cycling from −150 °C to 120 °C, making them suitable for space environments. The mechanical performance is heavily influenced by fiber orientation and stacking sequence; Chalasani et al. (2023) demonstrated that unidirectional laminates offer superior stiffness, whereas bi-directional plies enhance impact and fatigue resistance. Epoxy nanomodification with carbon nanotubes or MoS2 has further been shown to increase tensile strength and thermal conductivity by up to 20%, improving multifunctional performance for aerospace applications.
Applications and Advantages
Carbon/Epoxy Composite tubes are widely employed in aircraft fuselages, satellite booms, robotic arms, and drive shafts. Their high stiffness-to-weight ratio and low coefficient of thermal expansion (CTE) make them ideal for precision structural frameworks that must remain stable under thermal cycling. In the aerospace sector, they are used in spacecraft support structures where vibration damping and resistance to fatigue are crucial. As Xavier (2023) noted, hybrid composites incorporating carbon nanotube-modified epoxy coatings enhance both the hydrophobic and mechanical performance of aerospace-grade alloys, demonstrating excellent potential in protective and load-bearing designs. Beyond aerospace, these composites are increasingly used in sports engineering, automotive driveshafts, and renewable energy rotor components for their durability and corrosion resistance under dynamic loading.
Goodfellow Availability
Goodfellow provides high-quality Carbon/Epoxy Composite tubes in research and engineering grades. Custom diameters, fiber orientations, and wall thicknesses can be specified to meet unique performance requirements for thermal, mechanical, and lightweight applications.
Explore Carbon/Epoxy Composite – Tube – Material Information and other advanced materials in Goodfellow’s online catalogue: Goodfellow product finder.
References
- Ibadi, M., Purnomo, H., Vicarneltor, D. N., Wibowo, H. B., Setianto, M. H., & Whulanza, Y. (2024). Investigation of thermomechanical analysis of carbon/epoxy composite for spacecraft structure material. Sains Malaysiana, 53(3), 319–327. https://doi.org/10.17576/jsm-2024-5303-16
- Im, J. M., Shin, K. B., & Choi, I. H. (2023). Evaluation of mechanical properties of carbon/epoxy composites under space thermal environments. Transactions of The Korean Society of Mechanical Engineers A, 47(4), 313–322. https://doi.org/10.3795/ksme-a.2023.47.4.313
- Chalasani, S., Potukuchi, S., Rayasam, S., Narayanamurthy, V., & Chinthapenta, V. (2023). Mechanical characterization of high-strength carbon-epoxy composite laminates. Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2023.09.092
- Xavier, J. R. (2023). Carbon nanotube-based polymer nanocomposites: Evaluation of barrier, hydrophobic, and mechanical properties for aerospace applications. Polymer Engineering and Science, 63(11), 4134–4148. https://doi.org/10.1002/pen.26407