Silicon Bronze - Tig Rod
ERCuSi-A silicon bronze TIG rod is a copper-silicon GTAW filler (AWS A5.7) that joins copper, brass, galvanized and dissimilar metals at low heat input, with excellent control for fine and decorative work. Its flowing puddle and attractive bronze color make it a favorite for sculpture, restoration, and braze-welding thin steel. 36" cut lengths under argon.
Specifications & FAQ — click to expand
| AWS Classification | AWS A5.7 ERCuSi-A |
| Alloy | Copper-silicon (silicon bronze) |
| Shielding Gas | Argon (GTAW) |
| Best For | Copper/brass, dissimilar metals, braze-welding, art & restoration |
Frequently Asked Questions
What is silicon bronze TIG rod used for?
Braze-welding and joining copper, brass, galvanized, and dissimilar metals at low heat — plus sculpture, restoration, and decorative work where its bronze color and controllable puddle shine.
Why braze-weld instead of fusion weld?
The lower heat input reduces distortion and burn-through on thin material and protects coatings like zinc on galvanized steel.
