LFT-G® PA6 GF50 (LGF50) Black – Ultimate Metal Replacement
LFT-G® PA6 GF50 Black (Model: LFT-PA6-GF50-BG05) represents the pinnacle of structural polyamides. Engineered with a dense 50% long glass fiber skeleton, this deep black, UV-stabilized composite is designed exclusively to replace heavy die-cast aluminum and zinc in extreme load-bearing applications.
Core Capabilities:
- ● Extreme Modulus: 13,000 MPa flexural stiffness rivals light metals.
- ● Thermal Stability: Withstands continuous high-heat environments up to 215°C.
- ● Fatigue Immunity: The 50% LGF 3D network eliminates brittle failure.
- ● Aesthetic Finish: Flawless black surface without exposed fiberglass.
Value Engineering: The LGF50 Advantage
For modern OEMs, material selection goes beyond tensile strength. Switching from die-cast aluminum to our 50% glass filled nylon delivers measurable improvements in Total Cost of Ownership (TCO) and corporate sustainability goals.
Weight Reduction
Dramatically lowers mass compared to aluminum, boosting vehicle fuel efficiency and payload capacity.
Cost Savings
Eliminates costly CNC machining, anti-corrosion treatments, and surface painting. Molded in a single step.
Carbon Footprint
Injection molding requires significantly less energy than metal smelting, supporting OEM ESG targets.
Technical Data Sheet: LFT-PA6-GF50-BG05 (Dry As Molded)
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Polyamide 6 (PA6) Black |
| Fiber Content | ISO 1172 | % | 50% Long Glass Fiber |
| Density | ISO 1183 | g/cm³ | 1.53 - 1.54 |
| Tensile Strength | ISO 527 | MPa | 210 - 220 |
| Flexural Modulus | ISO 178 | MPa | 12,700 - 14,000 |
| Notched Impact Strength | ISO 179 | kJ/m² | 38 - 42 |
| HDT (1.80 MPa) | ISO 75 | °C | 215 |
Industry Applications: Ultimate Rigidity

Automotive Powertrain Mounts
Engine mounts and chassis brackets require absolute rigidity to manage torque output. Our 50% LGF Nylon 6 provides a staggering 13,800 MPa modulus. It replaces cast metal, dampening engine vibrations better than aluminum while maintaining a flawless, rust-free black appearance.

High-Pressure Pump Housings
Industrial fluid handling equipment faces severe internal pressure. The continuous 50% long fiber skeleton mechanically locks the PA6 resin, eliminating dimensional creep. It ensures tight seals without warping, completely removing the risk of corrosion found in metallic valves.

E-Bike & Sporting Frames
For high-end e-bikes and sporting goods, weight reduction and aesthetics are critical. This ultra-stiff composite provides the structural integrity to support riders and batteries, while the deep black finish delivers a premium, UV-resistant look straight out of the mold.
Frequently Asked Questions (FAQ)
Q: How does the 50% LGF content handle moisture absorption in Nylon?
A: Standard Polyamide 6 swells and loses stiffness when it absorbs moisture. By integrating a massive 50% long glass fiber skeleton, the polymer matrix is physically locked. This highly restricts the resin's ability to swell, ensuring dimensional stability and retaining exceptional modulus even in highly humid conditions.
Q: Is it difficult to injection mold 50% long glass fiber nylon?
A: While the melt viscosity is higher than standard plastics, LFT-G® pellets are engineered for excellent flowability. To preserve the critical fiber length, we recommend using low compression screws, generous gate sizes, and low back-pressure. Our engineers provide complete mold-flow support to optimize your process.
Q: Does the black color need additional UV coating?
A: No. The model LFT-PA6-GF50-BG05 is fully compounded. The premium black pigment and UV stabilizers are integrated directly into the polymer matrix during manufacturing. This provides a deep, flawless finish straight out of the mold, eliminating the need for secondary painting.
Ready to Replace Die-Cast Metal?
Cut weight, lower your TCO, and achieve ESG goals. Contact the LFT-G® engineering team for TDS and pricing.
Request Black PA6 LGF50 Quote
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