3DXTech FibreX™ PEI+GF30 Glass Fiber Reinforced ULTEM™ Filament

3DXTech FibreX™ PEI+GF30 is a high-performance engineering filament manufactured from PEI (Polyetherimide) reinforced with 30% glass fiber and based on ULTEM™ resin technology. Designed for industrial-grade additive manufacturing, this advanced composite material offers exceptional rigidity, dimensional stability, thermal resistance, and mechanical performance for applications where conventional thermoplastics cannot meet requirements.

The addition of 30% glass fiber reinforcement significantly increases stiffness and reduces thermal expansion, making FibreX PEI+GF30 an excellent choice for precision components, tooling, fixtures, aerospace parts, automotive applications, and high-temperature functional prototypes. For users requiring maximum structural integrity and heat resistance, this material provides a reliable solution for demanding production environments.

Supplied in a 0.25kg spool with a 1.75mm filament diameter, FibreX PEI+GF30 is intended for advanced users and industrial 3D printing systems capable of processing high-temperature engineering polymers.

Key Features & Benefits

• PEI-based engineering filament reinforced with 30% glass fiber
• Manufactured using high-performance ULTEM™ resin technology
• Exceptional stiffness and structural rigidity
• Outstanding thermal stability at elevated temperatures
• Reduced thermal expansion for improved dimensional accuracy
• Excellent strength-to-weight ratio
• Superior chemical resistance compared to commodity materials
• Low creep characteristics under continuous load
• High dimensional stability during long-term use
• Suitable for functional end-use parts and industrial tooling
• Excellent performance in aerospace, automotive, and manufacturing applications

Printability & Performance

FibreX PEI+GF30 is engineered for demanding applications where dimensional accuracy and mechanical performance are critical. The glass fiber reinforcement helps minimize warping and shrinkage while improving overall rigidity and thermal stability.

Printed parts exhibit:

• High stiffness and structural integrity
• Improved dimensional stability versus unfilled PEI
• Excellent layer adhesion when processed correctly
• Enhanced resistance to deformation under heat
• Reduced thermal expansion
• Professional engineering-grade surface finish
• Long-term mechanical durability

Due to the abrasive nature of glass fiber-filled materials, a hardened steel, ruby, tungsten carbide, or similarly wear-resistant nozzle is strongly recommended.

For optimal print quality, users should ensure proper material drying and operate within the recommended temperature ranges.

Typical Applications & Use Cases

FibreX PEI+GF30 is designed for advanced engineering and industrial environments where performance requirements exceed the capabilities of PLA, PETG, ABS, nylon, or standard PEI materials.

Common applications include:

• Aerospace interior components
• Aircraft ducting and structural brackets
• Automotive under-hood components
• Manufacturing jigs and fixtures
• Tooling and assembly aids
• Industrial machine components
• Electrical housings and enclosures
• High-temperature functional prototypes
• Robotics and automation systems
• Research and development projects
• Production-grade end-use parts

Material & Compatibility Information

This filament requires a professional high-temperature FDM/FFF 3D printer capable of processing advanced engineering polymers.

Recommended printing parameters include:

• Nozzle Temperature: 370–390°C
• Bed Temperature: 140–160°C
• Heated Chamber: Strongly Recommended
• Cooling Fan: Off
• Drying Conditions: 120°C for 4 hours
• Recommended Print Surface: High-temperature PEI-compatible build surface

Because FibreX PEI+GF30 contains 30% glass fiber reinforcement, it is not suitable for standard consumer-grade 3D printers. Users should employ all-metal hotends, hardened nozzles, heated build platforms, and enclosed heated chambers for best results.

Compatible systems typically include industrial and high-temperature platforms from manufacturers specializing in engineering-grade additive manufacturing.

Why Users Choose FibreX™ PEI+GF30

Engineers and manufacturers choose FibreX PEI+GF30 when dimensional stability, stiffness, and thermal performance are mission-critical. The combination of PEI's high-temperature capabilities with 30% glass fiber reinforcement creates a material capable of maintaining precise tolerances and structural performance under demanding operating conditions.

Compared to unfilled PEI, the glass fiber reinforcement improves rigidity and reduces thermal expansion, making it especially valuable for tooling, fixtures, structural components, and precision-engineered assemblies.

For organizations seeking a proven engineering material capable of replacing machined components in select applications, FibreX PEI+GF30 offers a compelling balance of performance, durability, and manufacturability.

Ready for Industrial-Grade Additive Manufacturing?

Choose 3DXTech FibreX™ PEI+GF30 Glass Fiber Reinforced ULTEM™ Filament for applications requiring exceptional rigidity, dimensional stability, heat resistance, and long-term reliability. Designed for advanced manufacturing environments, this high-performance composite material enables the production of precision parts that perform in demanding real-world conditions.