What is PA12 LGF40 Material?
LFT-G® PA12 LGF40 is a high-performance engineering thermoplastic composed of Polyamide 12 (PA12) reinforced with 40% long glass fibers. This advanced composite delivers exceptional mechanical strength, outstanding impact resistance, and superior dimensional stability - even in demanding environments.
Compared to short-fiber alternatives, the long glass fiber architecture provides significantly higher stiffness, creep resistance, and load-bearing capacity, making PA12 LGF40 the material of choice for structural components in the automotive, industrial, and electrical sectors.
Key Highlights
Long glass fiber reinforcement
Tensile Strength
180 MPa
HDT @ 1.82 MPa
210 °C
Core Strength
Why engineers choose LFT-G® PA12 LGF40 for mission-critical components
Exceptional Mechanical Strength
Superior Impact Resistance
Low Moisture Absorption
Excellent Chemical Resistance
Performance Edge: Long Fiber vs. Short Fiber
PA12 LGF40 (40% long glass fiber) outperforms standard short-fiber PA12 GF40 across key metrics
* Data shown are typical values. Long fiber reinforcement delivers superior mechanical and thermal performance.
Long Fiber PA12 LGF40
- Higher stiffness & creep resistance
- Superior impact toughness
- Better thermal stability
- Lower mechanical performance
- Reduced impact resistance
- Lower heat deflection temperature
Technical Data Sheet
Typical properties of PA12 LGF40 (40% long glass fiber reinforced)
| Property | Value | Unit | Standard |
|---|---|---|---|
| Density | 1.35 | g/cm³ |
ASTM D-792
|
| Tensile Strength | 180 | MPa | ISO 527 |
| Flexural Strength | 250 | MPa |
GB/T 9341
|
| Flexural Modulus | 11,000 | MPa |
GB/T 9341
|
| Notched Impact Strength (23°C) | 25 | kJ/m² | ISO 180 |
| Elongation at Break | 3.0 | % | ISO 527 |
| Heat Deflection Temperature (1.82 MPa) | 210 | °C |
ASTM D-648
|
Processing Guidelines – Injection Molding
3 core steps for consistent, high-quality PA12 LGF40 parts
Pre-Drying
Dry at 80 – 100 °C for 4 – 6 hours.
Moisture content must be < 0.1% to prevent hydrolysis.
Injection Molding
Melt temperature: 260 – 290 °C.
Injection pressure: 80 – 150 MPa, medium to high speed.
Cooling & Demolding
Mold temperature: 80 – 120 °C.
Cooling time: 15 – 30 s. Annealing at 120 – 140 °C (optional) to relieve stress.
Applications
Where PA12 LGF40 delivers unmatched performance
Automotive
Under-hood components, structural brackets, engine covers, intake manifolds, and lightweight structural parts that demand high strength and thermal stability.
Industrial Equipment
Gears, bearings, pump housings, conveyor components, and heavy-duty machinery parts requiring excellent wear resistance and dimensional stability.
Electrical & Electronics
Connectors, relays, switch housings, and insulating components that benefit from low moisture absorption and reliable dielectric properties.
Sports & Leisure
Bicycle frames, ski bindings, protective gear, and high-performance sporting equipment where lightweight and impact resistance are critical.
Q: What makes PA12 LGF40 mechanically superior to short-fiber reinforced PA12?
A: The long glass fibers in PA12 LGF40 create a dense, three-dimensional network that significantly enhances load transfer. This architecture delivers up to 40% higher flexural modulus and superior impact strength compared to short-fiber grades, ensuring structural integrity under high static and dynamic loads.
Q: How does PA12 LGF40 perform in high-temperature and humid environments?
A: PA12 LGF40 offers excellent thermal stability with an HDT of 210°C at 1.82 MPa. Thanks to the PA12 base resin's intrinsically low moisture uptake (<0.5%), it maintains its dimensional stability and mechanical strength across a wide temperature range (-40°C to +150°C) without significant property degradation.
Q: What are the key injection molding parameters for PA12 LGF40 to ensure optimal part quality?
A: To achieve optimal surface finish and mechanical properties, thorough pre-drying (80-100°C for 4-6 hours) is critical to prevent hydrolysis. Use a melt temperature of 260-290°C and a mold temperature of 80-120°C to ensure proper fiber orientation and minimal internal stress.
Contact: Emily
Email: sale04@lfrtplastic.com
WhatsApp / Mobile: +86 188 5034 4811
Hot Tags: superior impact toughness nylon 12 lgf40 lft‑g, China, manufacturers, suppliers, factory, buy, customized
