High-Performance Long Glass Fiber Reinforced Nylon 12
LFT‑G® PA12 LGF30 is a 30% long glass fiber reinforced polyamide 12 compound engineered for demanding engineering applications where dimensional stability, chemical resistance, and long‑term reliability are paramount. This advanced material delivers an exceptional balance of high stiffness, excellent impact toughness, ultra‑low moisture absorption, and outstanding resistance to fuels, oils, and solvents - making it the ideal choice for automotive fluid systems, pneumatic components, and precision industrial parts operating in harsh environments.
Compared to standard PA6 and PA66 grades, the long‑glass architecture combined with the inherently low‑moisture PA12 matrix delivers superior dimensional stability, lower water uptake (up to 90% less than PA6), and enhanced chemical resistance - ensuring consistent performance in demanding thermal and fluid‑contact applications.
Key Features of LFT‑G® PA12 LGF30:
- Long glass fiber reinforcement – High stiffness and load‑bearing capacity
- Ultra‑low moisture absorption – Unwavering dimensional stability in humid environments
- Superior chemical resistance – Exceptional resistance to fuels, oils, greases, and solvents
- High mechanical performance – Excellent strength, rigidity, and impact toughness
- Outstanding fatigue & creep resistance – Reliable long‑term performance under sustained loads
- Low warpage & dimensional precision – Consistent part geometry and tight tolerances
Material Comparison Analysis
PA12 LGF30 vs. PA12 GF30 – Performance Comparison
Performance Comparison at a Glance
Impact Strength
Moisture Absorption
Chemical Resistance
Dimensional Stability
Conclusion: LFT‑G® PA12 LGF30 delivers the optimal balance of mechanical performance, low moisture absorption, and chemical resistance for demanding fluid‑contact and precision engineering applications.
Technical Data Sheet – LFT‑G® PA12 LGF30
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Specific Gravity | 1.28 | g/cm³ | ASTM D‑792 |
| Molding Shrinkage | 0.20 – 0.40 | % | ASTM D‑955 |
| Tensile Strength | 155 | MPa | ISO 527 |
| Tensile Modulus | 10,800 | MPa | ISO 527 |
| Tensile Elongation | 1.8 – 2.6 | % | ISO 527 |
| Flexural Strength | 210 | MPa | ISO 178 |
| Flexural Modulus | 8,200 | MPa | ISO 178 |
| Notched Izod Impact | 28 | kJ/m² | ISO 180 |
| Notched Charpy Impact | 25 | kJ/m² | ISO 179 |
| Heat Deflection Temp. (1.8 MPa) | 165 | °C | ISO 75‑2 |
| Water Absorption (24 h) | 0.10 | % | ISO 62 |
Processing Guidelines – Injection Molding
Pre‑drying
2–4 hrs @ 80–90 °C
Moisture < 0.1%
Melt Temperature
230–260 °C
Measured at nozzle
Mold Temperature
40–80 °C
Measured on cavity
Injection Pressure
70–120 MPa
Free‑flow check valve
Cooling & Ejection
Proper gate & draft
Minimize fiber breakage
Target Applications
LFT‑G® PA12 LGF30 is engineered for applications demanding chemical resistance, dimensional stability, and long‑term reliability in challenging fluid‑contact and precision engineering environments.
Fuel & Fluid Systems
With ultra-low moisture absorption (up to 90% less than PA6), PA12 LGF30 maintains dimensional stability in humid environments while offering excellent resistance to fuels, oils, alcohols, and road salts – making it ideal for fuel line connectors, quick-connect fittings, pump housings, and filter components that require long-term contact with aggressive media.
Pneumatic & Hydraulic Components
Combining high rigidity with excellent creep resistance, PA12 LGF30 withstands sustained pressure loads without deformation. Its natural hydrolysis resistance and compatibility with hydraulic fluids ensure reliable sealing performance – well suited for pneumatic fittings, hydraulic seal carriers, valve actuators, and compressor parts operating under continuous pressure cycles.
Marine & Offshore Equipment
With inherently low moisture sensitivity and excellent resistance to salt spray, UV exposure, and seawater corrosion, PA12 LGF30 retains mechanical strength even in harsh coastal environments – ideal for offshore platform pipe supports, mooring components, outdoor telecom enclosures, and solar tracking system structural parts exposed to extreme weather conditions.
Precision Structural Parts & Bearing Cages
Offering outstanding fatigue endurance and dimensional stability across temperature and humidity fluctuations, PA12 LGF30 maintains tight geometric tolerances over extended service life – making it the preferred choice for industrial bearing cages, transmission gears, slide rails, and locating brackets where precision and long-term reliability are critical.
FAQ
Q: Why choose PA12 LGF30 over standard PA6 or PA66 glass‑fiber grades?
A: PA12 LGF30 offers up to 90% lower moisture absorption than PA6 and significantly better dimensional stability in humid environments. It also provides superior resistance to fuels, oils, and solvents, making it the preferred choice for fluid‑contact and precision applications where PA6 or PA66 materials would degrade or lose tolerance.
Q: What makes the long glass fiber architecture superior to short‑fiber compounds?
A: The continuous long glass fiber network in PA12 LGF30 provides efficient load transfer across the entire part, delivering significantly higher impact strength, improved stiffness, and superior fatigue endurance compared to short‑fiber PA12 GF30 - enabling thinner, lighter, and more durable designs.
Q: What are the key processing considerations for PA12 LGF30?
A: Dry PA12 LGF30 at 80–90°C for 2–4 hours using a dehumidifying dryer. The recommended melt temperature is 230–260°C with mold temperature of 40–80°C. Use a metering screw with 18:1–24:1 L/D ratio and a free‑flow check valve. PA12 is less hygroscopic than PA6, but proper drying remains essential for optimal surface quality and mechanical performance.
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