Polyamide (PA) Nylon 6,6 is a versatile engineering polymer known for its reliable balance of strength, stiffness, and toughness. Formed by condensation of hexamethylenediamine and adipic acid, this semicrystalline material combines mechanical robustness with low friction and excellent wear behavior, even at elevated temperatures.
Material Overview
Nylon 6,6 features repeating amide (–CONH–) linkages that promote strong interchain hydrogen bonding. This molecular architecture yields high tensile strength and modulus, good creep resistance, and dimensional stability under load. In dry conditions, PA 6,6 typically retains useful properties up to ~120–150 °C, while offering resistance to oils, fuels, and many organic solvents. Its inherently low coefficient of friction and favorable abrasion resistance enable long service life in sliding contacts. Moisture conditioning increases toughness and impact resistance, a parameter that can be managed during processing. The polymer is readily melt-processed, machined to tight tolerances, and can be compounded with reinforcements (e.g., glass fiber) or solid lubricants (e.g., MoS2) to tailor stiffness, fatigue performance, and tribology.
Applications and Advantages
In service, Nylon 6,6 frequently competes with metals where weight reduction and tribological performance are critical. Representative uses include bushings, bearings, gears, wear pads, pulleys, valve seats, cable guides, and electrical hardware such as connectors and housings. In the automotive sector, PA 6,6 provides a strong strength-to-weight ratio for under-the-hood components and intake systems, contributing to mass reduction and improved fuel economy while tolerating thermal cycling and exposure to lubricants, salts, and fuels. Its low friction, fatigue resistance, and noise-damping characteristics support quiet, durable power-transmission elements. In industrial automation and robotics, the material’s machinability accelerates prototyping and pilot builds, and its dielectric strength and arc resistance suit electromechanical assemblies. Compatibility with CNC machining and additive manufacturing streamlines digital workflows, while recyclability supports sustainability initiatives.
Goodfellow Availability
Goodfellow supplies high-quality Nylon 6,6 for research, prototyping, and production. As a trusted partner to scientists and engineers worldwide, we offer reliable traceability and custom dimensions to meet precise design envelopes. Our technical specialists can help align mechanical, thermal, and tribological targets with the appropriate specification for your application.
Explore Polyamide Nylon 6, 6 Rod and other advanced materials in Goodfellow’s online catalogue: Goodfellow product finder.
References
- Galanty, P. G., & Jacob, K. I. (2009). Nylon 6. https://doi.org/10.1093/oso/9780195181012.003.0042
- McKeen, L. W. (2016). Polyamide Plastics (Nylons). https://doi.org/10.1016/B978-0-323-44201-5.00008-3
- Kondo, M., Montagna, L. S., Morgado, G. F. de M., & colleagues. (2022). Recent advances in the use of polyamide-based materials for the automotive industry. Polímeros. https://doi.org/10.1590/0104-1428.20220042
- Boyles, T. (2022). Polyamide. In Encyclopedia of Materials. https://doi.org/10.1007/978-3-031-15309-9_31
