PA66GF50

Product Use Cases

1. Automotive Industry (Primary Applications)

Heavy-duty engine mounts, turbocharger housings, load-bearing transmission housings, structural frames for new energy battery packs, chassis and suspension reinforcements, high-power vehicle-mounted high-voltage connector bases, and heavy-duty water pump housings (oil-resistant, hydrolysis-resistant, and high-temperature-resistant). Finished photovoltaic mounting structures

2. High-Voltage Electrical & New Energy

Load-bearing bases for high-voltage circuit breakers, high-power internal brackets for charging stations, stator frames for large motors, small structural components for wind turbines, PV tracker brackets, high-voltage insulating partitions (made from V0 flame-retardant specialty materials).

3. Industrial Machinery & Heavy-Duty Power Tools

Housing assemblies for heavy-duty electric hammers and high-power industrial angle grinders; heavy-duty gearboxes; hydraulic pump and valve bodies; large bearing housings; industrial drive sprockets; heavy-duty transmission brackets for agricultural machinery; bases for automation equipment. Plastic components for tools

4. Other Applications

Main load-bearing frames for heavy-duty fitness equipment; high-end bicycle cranks and pedals; small load-bearing components for construction machinery; large-scale high-pressure valve bodies for bathroom fixtures; heavy-duty airframe structural components for drones.

Core Product Features

·  Highest rigidity in the entire series: 50% glass-fiber-reinforced dense skeleton—the top choice for heavy-duty load-bearing applications, with fatigue and creep resistance superior to all GF20/30/35/40 grades;

·  Ultimate dimensional stability: Lowest shrinkage rate among all-glass-fiber PA66 grades, controllable tolerances for precision heavy-duty components, and no deformation under thermal cycling;

·  The go-to solution for metal lightweighting: Replaces aluminum and zinc die-cast parts, offering higher injection molding efficiency, lower production costs, and significant weight reduction;

·  Customizable with various modifications: Hydrolysis-resistant grades for automotive water system components, V0 flame-retardant grades for high-voltage power distribution, and -40°C cold-resistant grades for outdoor equipment in extremely cold climates;

·  Limitations: Contains the highest glass fiber content; flow properties are weaker than those of low-glass-fiber grades; molding of complex, thin-walled, small parts is relatively difficult; optimal for thick-walled and large structural components.

Technical Parameters

·  Physical Parameters: Density: 1.55–1.60 g/cm³; Melting Point: 259–263°C; Longitudinal molding shrinkage: 0.18%–0.25%; transverse: 0.38%–0.50%. This series has the lowest shrinkage among all glass-fiber-reinforced grades, with virtually no warping or deformation in high- or low-temperature and humid environments; equilibrium water absorption: 0.55%–0.7%; excellent dimensional accuracy.

·  Mechanical Properties: Tensile strength: 235–260 MPa; Flexural strength: 345–380 MPa; flexural modulus: 14,500–17,000 MPa; notched impact strength of simply supported beam: 15–22 kJ/m²; mechanical properties are comparable to die-cast aluminum alloys, with no creep or deformation under long-term continuous compression, and a weight reduction of 40%–55%.

·  Heat Resistance: Thermal deformation at 1.8 MPa occurs at 260–270 °C; thermal deformation at 0.45 MPa occurs at 272–280 °C; suitable for long-term continuous use at 125–145 °C and short-term peak temperatures of 220 °C, making it ideal for the high-temperature operating conditions of engine compartments.

·  Chemical Resistance & Environmental Compliance: Resistant to engine oil, gasoline, antifreeze, hydraulic oil, and weak acids and alkalis; not resistant to concentrated strong acids; excellent insulation with CTI ≥ 600 V; all grades comply with RoHS and REACH environmental certifications.

Product Images (Various Colors)

Processing Recommendations

·  Drying: Vacuum dehumidification drying at 110–120°C for 5–7 hours; strictly control moisture content to <0.10% to prevent silver streaks and bubbles;

·  Barrel temperature: 275–295°C; nozzle temperature: 280–290°C (higher temperatures are required for high-glass-fiber grades to improve flowability);

·  Mold Temperature: 95–115°C to optimize surface finish, reduce fiber protrusion, and stabilize product dimensions;

·  Mold Requirements: Mold cavities must undergo nitriding for wear resistance; draft angle ≥ 1.8° to reduce the likelihood of demolding scratches.