OEM PA66 Rod Supplier & Exporters

PA66 (Polyhexamethylene adipamide) offers a melting point of approximately 260°C—roughly 40°C higher than PA6 (220°C). Extruded PA66 exhibits greater surface hardness, higher tensile modulus, and superior resistance to cyclic mechanical creep under elevated temperatures. While cast PA6 excels in very large custom shapes (diameters >250 mm) and high impact damping, PA66 is the preferred stock for high-speed continuous mechanical components, thin-walled precision sleeves, and tight-tolerance bushings operating in warm conditions.

Thick diameter extruded bars are prone to vacuum centerline voids caused by volumetric shrinkage as the core cools slower than the outer periphery. We utilize calibrated high-pressure extrusion heads combined with prolonged cooling gradients and submerged ultrasonic non-destructive testing (NDT). Every batch is tested to ensure complete internal molecular solidness prior to secondary stress-relief annealing.

Yes. We produce custom 30% glass fiber reinforced PA66 rods (PA66-GF30) in diameters ranging from 15 mm to 150 mm. The addition of chemically-coupled glass fibers doubles flexural modulus, substantially diminishes thermal linear expansion, and elevates heat deflection temperatures under load up to 240°C, making it an optimal direct replacement for cast aluminum brackets.

Standard extruded diameters carry an intentional positive tolerance (+0.2 mm to +1.2 mm depending on nominal outer diameter) to guarantee clean final sizing on CNC turning centers without undersize scrap. Lengths are supplied standard at 1000 mm, 2000 mm, or custom cut-to-length with ±2 mm accuracy. Custom precision centerless ground rods are available upon special request holding h8 or h9 outer diameter tolerances.

Virgin PA66 is hygroscopic, absorbing roughly 2.5% moisture at standard room temperature and 50% relative humidity, resulting in a dimensional expansion of approximately 0.5% - 0.7%. In critical interference fits or bearing clearances, our design engineers assist buyers in calculating thermal and hygroscopic expansion allowances prior to final cutter toolpath programming.

All export orders are wrapped in vapor-barrier poly-sheeting with integrated desiccant packs, bundled with rigid perimeter corner protectors, and securely packed in ISPM-15 compliant fumigated wooden crates or reinforced export corrugated cartons. This eliminates atmospheric moisture absorption during extended ocean freight voyages.