🧩 PA6-GF30 – Polyamide 30% Glass Fiber Reinforced
(Rigid technical plastic, resistant to high temperatures and mechanical stress, used in automotive structural parts.)
🔹 What is PA6-GF30
PA6-GF30 is a Polyamide 6 (Nylon 6) reinforced with 30% glass fiber, used for parts that must withstand high mechanical loads, high temperatures, and constant vibrations. Glass fiber reinforcement provides superior mechanical strength and dimensional stability, but makes the plastic harder and less flexible.
🔧 Composition
- PA6 (Polyamide 6) — semi-crystalline thermoplastic base.
- GF (Glass Fiber 30%) — mechanical reinforcement, increases rigidity.
- Additives — UV stabilizers, coupling agents, technical lubricants.
🚗 Where PA6-GF30 is used in the automotive industry
| Component | Example parts | Observations |
| Engine / Technical | Sensor mounts, radiator housings, timing covers | High rigidity, heat resistance |
| Interior / Mechanical | Fasteners, clips, functional parts | No deformation under continuous stress |
| Exterior / Body | Headlight mounts, fan housings | Excellent dimensional stability |
| Tech Applications | Industrial parts, load-bearing structures | Difficult to weld, requires control |
🔧 Welding Temperature and Methods
| Method | Optimal Temperature | Observations |
| Hot Air | 320 – 340 °C | Requires original PA6-GF30 rod, slow melting |
| Heat Plate (Mirror) | 300 – 320 °C | Flat weld, precise thermal control |
| Manual Extrusion | 290 – 310 °C | Only with specialized equipment |
🔩 What to Weld PA6-GF30 With (Material Compatibility)
If you wonder what to weld PA6-GF30 with, the answer is clear: only with the same type of material, as glass fibers change the melting point and melting behavior.
✅ Compatible with:
- PA6-GF30 ↔ PA6-GF30 — ideal combination, solid mechanical bond.
- PA6-GF30 ↔ PA6 — possible, but with a risk of micro-cracks and different shrinkage.
- PA6-GF30 ↔ PA66-GF30 — partially compatible, only for technical repairs.
❌ Incompatible with:
- PP, PE, ABS, ASA, PC, PVC — completely different chemistry and melting.
💡 ReplastMD Recommendation:
For a secure weld, dry the part beforehand (PA6 absorbs water) and use original PA6-GF30 rods at a controlled temperature of 320 °C. Cooling must be slow and uniform to avoid internal stress.
🏭 Manufacturers and Trade Names
- BASF: Ultramid® B3WG6
- DuPont: Zytel® 70G30
- Lanxess: Durethan® BKV30
- DSM: Akulon® K224-G6
🧠 How to Identify PA6-GF30
- Engraved marking: >PA6-GF30<.
- Blue flame, smells of burnt hair (protein) when burning.
- Rigid surface, fibrous cut (visible white fibers).
- High density — sinks completely in water.
- ReplastMD practical test: if the part emits a burnt hair smell, has a fibrous cut, and resists melting → 99% PA6-GF30.
🛠️ PA6-GF30 Welding at ReplastMD:
At our service center in Chisinau (Ciocana sector), ReplastMD performs professional PA6-GF30 welding for headlight mounts, technical housings, and engine covers, ensuring restored structural strength.