Conforms to Certification: AWS – 5.7 ASME SFA A5.7
Silicon Bronze: Tig Welding Process (GTAW)
|AWS Chemical Composition Requirements|
|Cu = Remainder||Zn = 1.0 max|
|Sn = 1.0 max||Mn = 1.5 max|
|Fe = 0.50 max||Si = 2.8 – 4.0|
|Al = 0.01 max||Pb = 0.02 max|
|Other = 0.50 max|
Use 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.
Deposited Chemical Composition % (Typical)
Dependent on weld process
(Nominal) All Weld Metal Properties Requirements
Tensile Strength 50,000psi
Preheat / Interpass Recommendations
When working with silicon bronze base metal keep the inter-pass temperature below 65° C to minimize hot cracking. Base metals of cast iron may need a preheat of 315° C while copper may need 200-400° C.