Thermal Supremacy: Engineering Continuous Reinforcement at 253°C HDT
When structural components operate in environments where high mechanical loads intersect with continuous thermal radiation, standard engineering plastics frequently suffer from creep and thermal sagging. The LFT-G® PA66 LGF30 NG03 Polymer is purpose-built to conquer this thermal-mechanical threshold. By combining a high-purity Polyamide 66 matrix with 30% continuous long glass fibers through an advanced melt pultrusion impregnation process, this composite establishes an internal 3D structural network inside the molded component. Verified through strict ISO 75-2 testing, it achieves a remarkable heat deflection temperature of 253°C under a heavy 1.8 MPa load. Crucially, the tighter crystalline structure of PA66 yields substantially lower moisture absorption and superior hydrolysis resistance compared to Polyamide 6. This chemical stability ensures that the composite maintains an extraordinary 11,063 MPa tensile modulus and high creep resistance throughout decades of service in boiling water, automotive coolants, and harsh industrial atmospheres.
Material Identification & Classifications
| Property Key | Specification Value |
|---|---|
| Product Grade Code | LFT-G® PA66-LGF30-NG03 |
| Polymer Matrix Type | Polyamide 66 (PA66 / Nylon 66) |
| Reinforcement Architecture | 30% Continuous Long Glass Fiber (LGF) |
| Available Color Options | Natural and Black (Custom masterbatch upon request) |
| Material Delivery Form | Pelletized Granules (10-12mm length) |
| Compliance Testing Standards | Strictly ISO and ASTM Laboratory Certified |
| Flame Retardancy Rating | HB @ 1.5mm (UL-94 Standard) |
| Key Engineering Target | Automotive thermal cooling, Inverter hardware, Impellers |
Typical Properties of PA66 LGF30 NG03
| Property | Standard | Value |
|---|---|---|
| Specific Gravity | ASTM D-792 | 1.37 g/cm³ |
| Molding Shrinkage | ASTM D-955 | 0.2% - 0.4% |
| Tensile Strength | ISO 527 | 186 MPa |
| Tensile Modulus | ISO 527 | 11,063 MPa |
| Property | Standard | Value |
|---|---|---|
| Flexural Strength | ASTM D-790 | 281 MPa |
| Flexural Modulus | ASTM D-790 | 8,250 MPa |
| Notched Charpy Impact | ISO 180 | 30 kJ/m² |
| HDT (1.8 MPa) | ISO 75-2 | 253 °C |
Technical parameters reflect laboratory test specimens under dry-as-molded conditions. Testing complies strictly with global ISO and ASTM procedures, eliminating localized measurement discrepancies for international OEM component validation.
Processing Parameters
Pre-Drying
85–105°C / 3-5 hrs
Moisture Content < 0.05%
Melt Temp
267–299°C
Injection Pressure: 70-125 MPa
Mold Temp
75–85°C
Promotes uniform crystallization
Specialized High-Temperature Structural Applications
Automotive Radiator End Tanks & Cooling Modules
Automotive cooling systems subject radiator water chambers and integrated thermostat housings to boiling coolant mixtures (50/50 ethylene glycol and water) under continuous cyclic pressure up to 2.5 bar. Polyamide 6 degrades and swells excessively under these hydrothermal conditions. PA66 LGF30 NG03 excels here: its 253°C HDT easily resists peak under-hood temperatures, while its lower water absorption and continuous fiber reinforcement eliminate weld-line splitting and hot-coolant creep failure.
Solar PV Inverter Brackets & High-Voltage Enclosures
Commercial solar installations and utility-scale energy storage inverters endure relentless desert UV exposure and thermal fluctuations spanning from -30°C to +85°C. Structural brackets must securely support heavy copper transformers and heat sinks without sagging over a 25-year lifecycle. PA66 LGF30 delivers high dielectric strength combined with an 8,250 MPa flexural stiffness, completely preventing enclosure warping that could compromise critical IP67 water-tight gaskets.
Industrial High-Temperature Pump Impellers & Casings
Centrifugal pumps transporting hot industrial wash water and mild chemical solutions require impellers with tight dimensional tolerances to prevent clearance loss against the pump housing. PA66 LGF30 exhibits minimal isotropic shrinkage (0.2% - 0.4%) and resists cavitation erosion. Replacing stainless steel and bronze castings with this 1.37 g/cm³ composite drastically lowers rotational inertia, improving motor energy efficiency by up to 15%.
Explore the PA66 LGF Series
PA66 LGF20
A 20% long glass fiber grade designed for intricate, thin-walled molds requiring superior melt flowability while maintaining PA66 thermal properties.
View PA66 LGF20 →PA66 LGF30
The balanced high-temperature workhorse. Combines 11,063 MPa stiffness with a 253°C HDT for automotive radiator tanks and fluid systems.
PA66 LGF40
Increases reinforcement to 40% long glass fiber, maximizing tensile modulus for severe heavy-duty engine mounts and industrial gearboxes.
View PA66 LGF40 →Request Technical Trial Sample 
Are you designing high-temperature automotive cooling components, solar inverter structural hardware, or chemical pump housings that demand 253°C thermal stability alongside 11,000+ MPa stiffness? Contact the LFT-G engineering team today to discuss your technical specifications and request a 25KG PA66 LGF30 NG03 trial sample.
Email Inquiry: Candyhu@lfrtplastic.com
WhatsApp Directly: +86 13950095707
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