Welding aluminum is tricky. High thermal conductivity, oxide layer, and low melting point make it challenging. Here's how to choose the right machine.
Aluminum oxide melts at 2,072°C while aluminum melts at 660°C. You must break through the oxide to weld the base metal.
Aluminum conducts heat 5x faster than steel. Heat spreads quickly, causing distortion and making it hard to control the weld pool.
Aluminum absorbs hydrogen when molten. If it cools too slowly, gas bubbles form inside the weld (porosity).
| Feature | AC TIG | MIG (Spool Gun) | Laser Welder |
|---|---|---|---|
| Learning Time | 3-6 months | 2-4 weeks | 1-2 weeks |
| Welding Speed | Slow | Medium | Fast |
| Heat Distortion | Medium | Medium-High | Very Low |
| Weld Appearance | Excellent | Good | Excellent |
| Max Thickness | 6mm+ | 6mm+ | 4mm |
| Post-Weld Cleanup | Minimal | Some needed | None |
Concentrated beam means less heat spread, reducing distortion
Rapid solidification reduces porosity
No oxide contamination, shielding gas protects the weld
Our fiber laser welders handle aluminum, stainless, and carbon steel. Factory-direct pricing with full technical support.
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