🧩 PA6T-GF40 – Aromatic Polyamide with 40% Glass Fiber
(A high-performance semi-aromatic polyamide reinforced with 40% glass fiber, designed for applications requiring extremely high mechanical strength, rigidity, and thermal stability at temperatures exceeding 200 °C.)
🔹 What is PA6T-GF40
PA6T-GF40 is a polyterephthalamide that offers outstanding structural integrity. By adding 40% glass fiber, the material becomes exceptionally rigid with remarkably low water absorption and creep resistance. It is frequently used as a lightweight alternative to aluminum in parts exposed to thermal shocks, oils, and fuels, such as turbo components and engine brackets.
🔧 Composition
| Component | Typical Ratio | Role |
| Semi-aromatic PA6T | ≈ 60 % | Heat and chemical resistant matrix |
| Glass Fiber (E-Glass) | ≈ 40 % | Increases rigidity, impact, and dimensional strength |
| Additives | < 3 % | Oxidation protection and color stability |
🚗 Where PA6T-GF40 is used in the automotive industry
| Component | Example parts | Observations |
| Valve Covers | Toyota, Renault | Stability at over 200 °C |
| Structural Brackets | VW, Ford | Replaces aluminum in rigid parts |
| EGR / Turbo Housings | Peugeot, Nissan | Resists repeated thermal shocks |
| Connectors / Sensors | Bosch, Valeo | High insulation and mechanical rigidity |
🔧 Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 290 – 310 °C | Requires uniform preheating |
| Heat Plate (Mirror) | 295 – 305 °C | Ideal – Clean bond, no cracks |
| Plastic Extrusion | 300 °C | Recommended – use matching PA6T-GF rod |
🔩 Material Compatibility
- ✅ Compatible: PA6T, PA6T-GF, PA6T-MX.
- ✅ Thermally Good: PA6I/6T, PA9T, PA10T (similar melting points).
- ❌ Incompatible: PA12, PP, PE, PBT, PVC (thermally and chemically incompatible).
💡 ReplastMD Recommendation: Weld at ~300 °C using PA6T-GF rods. The material is extremely rigid; ensure controlled cooling to prevent stress fractures in the high-performance structural joint.
🧠 How to Identify PA6T-GF40
- Engraved marking: > PA6T-GF40 <, > GRIVORY HT1V40 <, > ZYTEL HTN <.
- Texture: Very rigid, matte, coarse visible fibers.
- Density: ~1.58 g/cm³.
- ReplastMD practical test: Produces a clear, metallic sound when tapped. No elasticity when cut; edge is rough and brittle.
🛠️ PA6T-GF40 Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we perform professional PA6T-GF40 welding for engine brackets and turbo components, ensuring an industrial-grade finish that resists extreme heat and pressure.