Semi-Crystalline Polyamide

Nylon 6/6 (Polyamide 66)

Nylon 6/6 is a tough, wear-resistant engineering plastic used for machined and molded mechanical parts. It has a higher melting point than nylon 6 and is often glass-filled for injection molding. Request a quote or browse all materials.

Typical Properties

Nylon 6/6 at a glance

Property	Typical value
Density	~1.14 g/cm³
Tensile strength (dry)	~80–85 MPa
Tensile modulus (dry)	~2.8–3.0 GPa
Elongation at break (dry)	~15–60%
Melting point	~255–265 °C
Heat deflection (1.8 MPa)	~70–90 °C
Water absorption, 24 h	~1.0–1.2%
Water absorption, saturation	~8%

Dry-as-molded values; properties change as nylon absorbs moisture. These are typical reference values from standard published data, not guaranteed minimums. Request material certificates in your RFQ if properties must be verified.

Advantages

Why engineers choose Nylon 6/6

Wear resistance

Good for bushings, gears, and sliding parts.

Toughness

Tough and impact resistant, especially when conditioned.

Chemical resistance

Resists oils, fuels, and many solvents.

Process range

Machined stock and many molding grades, including glass-filled.

Design considerations: Absorbs moisture, which changes dimensions and stiffness; attacked by strong acids; tolerances need allowance for humidity.

Applications