🧩 PEEK+Glass – Polyether Ether Ketone + Glass Fiber
(Reinforced technical material designed for high mechanical and thermal strength. PEEK+Glass combines the PEEK matrix with 20–40% short glass fibers, resulting in an ideal material for precision technical parts and structural components.)
🔹 What is PEEK+Glass
PEEK+Glass is a high-performance semi-crystalline composite where glass fibers increase rigidity by 50–80% compared to pure PEEK. It offers reduced thermal deformation and exceptional creep resistance. It is perfect for industrial and automotive applications where parts must work at continuous temperatures up to 260°C with near-zero dimensional variation.
🔧 Composition & Properties
- Base: 60–80% PEEK, 20–40% Glass Fiber (GF).
- Density: 1.46–1.50 g/cm³.
- Melting Point: ≈ 343 °C.
- Chemical Resistance: Exceptional.
- Continuous Heat Resistance: 250–260 °C.
🚗 Where PEEK+Glass is used in the automotive industry
| Component | Example parts | Observations |
| Engine / Thermal | EGR covers, pumps, gaskets | High rigidity, stable at 250 °C |
| Transmission | Bushings, spacers, guides | Wear and friction resistance |
| Electrical / Sensors | ECU housings, fittings | Excellent thermal and electrical insulation |
| Technical Structures | Frames, clips, mounts | High dimensional stability |
🔧 Welding Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 370 – 390 °C | Slow melting, uniform flow |
| Plastic Extrusion | 370 – 390 °C | PEEK or compatible PEEK+GF rods |
| Heat Plate (Mirror) | 360 – 380 °C | Clean bond, no oxidation |
🔩 Material Compatibility
- ✅ Compatible: PEEK, PEEK+GF, PEEK+CF, PPS, PPSU, PES, PEI, PSU.
- ⚠️ Good Compatibility: PPA, PEEK+PA, PEEK+PEI.
- ❌ Incompatible: PP, PE, PS, ABS, PC, PET (completely different melting points).
💡 ReplastMD Recommendation: Use PEEK or PEEK+GF rods at 380 °C. Heat uniformly and avoid overheating — oxidized glass fibers can generate internal bubbling. Slow cooling is key to a dense, stress-free weld.
🧠 How to Identify PEEK+Glass
- Engraved marking: >PEEK+GF30<, >VICTREX GL30<, >VESTAKEEP GF<.
- Texture: Semi-glossy, light gray or beige, fine finish.
- ReplastMD practical test: If the part is rigid, heavy, and does not soften under 260 °C hot air, it is confirmed. Burns with a clean flame and neutral scent.
🛠️ PEEK+Glass Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we perform professional PEEK+Glass welding for sensor covers and pump housings, ensuring a high-strength, durable, and factory-grade finish.