🧩 PA12+GF15 – Polyamide 12 Reinforced with 15% Glass Fiber
(A flexible and strong technical polyamide reinforced with 15% glass fiber, offering an excellent balance between mechanical strength, dimensional stability, and the specific flexibility of PA12.)
🔹 What is PA12+GF15
PA12+GF15 is a semi-crystalline material with superior mechanical strength compared to pure PA12, yet it retains its flexibility and impact resistance at low temperatures. Compared to PA12+GF30 variants, it is lighter, has better elasticity, and more stable vibration behavior — making it ideal for dynamic automotive systems.
🔧 Composition
| Component | Typical Ratio | Role |
| PA12 (Polyamide 12) | 85 % | Flexible matrix, chemical and impact resistance |
| Glass Fiber (GF) | 15 % | Increases rigidity, thermal and tensile strength |
| Additives | < 5 % | Oxidation protection and stable processability |
🚗 Where PA12+GF15 is used in the automotive industry
| Component | Example parts | Observations |
| Pressure Hoses | Fuel, oil, EGR lines | Excellent fuel resistance |
| Technical Fittings | Bosch, Valeo, Siemens | High dimensional stability |
| Sensor Housings | VW, BMW, Renault | Durable and vibration resistant |
| Cooling / Vacuum | Parts near the engine | Resists up to 130–140 °C continuously |
🔧 Welding Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 250 – 270 °C | Recommended – precise control and constant air |
| Plastic Extrusion | 240 – 260 °C | Ideal – use compatible PA12 or PA12+GF rod |
| Heat Plate (Mirror) | 240 – 260 °C | Possible for flat parts or fittings |
🔩 Material Compatibility
- ✅ Compatible: PA12, PA11, PA12+GF, PA12+PTFE.
- ⚠️ Partially Compatible: PA6, PA66, PPA, PEI (requires controlled temperature).
- ❌ Incompatible: PP, PE, PVC, ABS (thermally and chemically incompatible).
💡 ReplastMD Recommendation: Weld at 260 °C using compatible PA12 or Rilsan® L rods; keep a constant distance to avoid carbonizing the fibers.
🧠 How to Identify PA12+GF15
- Engraved marking: >PA12+GF15<, >RILSAN-L-GF15<, >VESTAMID-L-GF15<.
- Texture: Semi-glossy with a fine fiber aspect; feels rigid yet elastic.
- ReplastMD practical test: When broken, fine white fibers are visible. Flame: self-extinguishes slowly with a faint amide scent.
🛠️ PA12+GF15 Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we perform professional PA12+GF15 welding for technical connectors and sensor housings, ensuring a pressure-resistant and durable finish.