Overview
Nylon 66 is an engineering-grade thermoplastic known for its superior rigidity, higher melting point and better dimensional stability compared to Nylon 6. These properties make it ideal for applications that involve higher temperatures and sustained mechanical stress. It offers excellent machinability and abrasion resistance, maintaining strength and stiffness under load. Nylon 66 also has better resistance to creep and deformation over time, making it a reliable choice in demanding industrial environments. However, like Nylon 6, it absorbs moisture, which can affect dimensional accuracy in certain applications.
Key Features
- High tensile strength and rigidity
- Excellent dimensional stability
- Better heat resistance than Nylon 6
- Superior creep resistance under load
- Excellent wear and abrasion properties
- High chemical resistance to oils and fuels
- Low coefficient of friction
- Good machinability for precision parts
Applications
- Precision engineering components
- Automotive parts (under-the-hood)
- Structural and load-bearing parts
- Gears and bushings
- Cable ties and fasteners
- Electrical insulators
- Valve seats and pump housings
Weaknesses
- Absorbs moisture, affecting dimensional stability
- Less impact resistant than Nylon 6
- Not inherently UV resistant (requires additives)
