Description
ERCuSi-A Wire
ERCuSi-A Wire is a Silicon Bronze is primarily used for MIG, TIG and gas welding of copper, copper-silicon and copper-zinc base metals to themselves and to steel. It is an excellent choice for joining plain or galvanized sheet steel to metal as well as other coated steels.
ERCuSi-A Unibraze Silicon Bronze is a copper-based filler metal that contains 3% Silicon and trace amounts of manganese, tin, and zinc. It is used primarily for oxyacetylene welding of copper, copper-silicon, and copper-zinc metals to themselves and to steel. Unibraze Silicon Bronze is excellent for plain or galvanized steel sheet metal as well as other coated steels. It is also used for surfacing areas that are subjected to corrosion. The Oxyacetylene gas flame should be slightly oxidizing. Keep the weld puddle small in order to promote fast solidification and minimize cracking. A high boric acid flux should be used both before and during welding. Preheat is NOT recommended.
ERCuSi-A Chemical Composition :
| Zn | 1.00 |
| Sn | 1.00 |
| Mn | 1.50 |
| Fe | 0.50 |
| Si | 2.80 – 4.00 |
| Al | 0.01 |
| Pb | 0.02 |
| Other | 0.50 |
| Cu including Ag | Remainder |
Trade Names of AWS Class ERCuSi-A MIG & TIG Filler Wire & Rods :
| Class | ERCuSi-A |
| UNS | C61800 |
| Oxford Alloys | Silicon Bronze |
Applications of ERCuSi-A Wire :
ERCuSi-A is used for welding of Silicon Bronze Copper, or Aluminum Bronze of low aluminum content. It can also be used for brazing malleable iron and light gauge steel.
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