Features and Benefits:
ERCuSi-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.
Blue Demon Silicon Bronze is a premium quality, de-oxidised general purpose, silicon bronze filler rod producing excellent joints on copper, brass, copper-silicon and copper-zinc sheet, tube and extruded section base metals to themselves and also to steel.
It is an excellent choice for joining plain or galvanized sheet steel to metal as well as other coated steels.
Applications:
Silicon Bronze is used extensively in applications where superior corrosion resistance and tensile strength is required such as marine engineering, repair and fabrication, including propellers, naval brass fittings, gear wheels, valves, shafts and pumps, and is also used on hot water system applications.
Typical Weld Deposit Properties:
Weld Metal Tensile Strength/340 MPa.
Approximate Melting Range/9701020C
Brinell Hardness/80-100
Procedure for TIG Welding:
Thoroughly clean all areas to be joined or rebuilt of foreign material.
For thick plate bevel edges 60 degrees to 70 degrees included angle.
ACHF using 100% Argon or Helium Shielding Gas.
2% Thoriated, Ceriated or Lanthanum Tungsten Electrode.
Heat a spot on the base metal until it shows signs of melting and progressively add the filler rod.
to the weld pool. Ensure that the weld pool is as small as possible.
Procedure for Gas (Braze) Welding:
Thoroughly clean all areas to be joined or rebuilt of foreign material.
For best results use #WF303 all purpose flux powder.
Adjust the flame to neutral or slightly oxidising (excess oxygen).
For thick plate bevel edges 60-90included angle.
Generally preheat is not required because of the lower melting point and low thermal conductivity.
Dip the heated end of the rod into the flux.
Heat a spot on the base metal until it shows signs of melting and progressively add the filler rod to the weld pool, Ensuring that the weld pool is as small as possible.
Allow to cool and remove flux residue with a wire brush and hot water.
Classification:
AS/NZS ISO 24373
EN ISO 24373 S Cu 6560 (CuSi3Mn1
AWS A5.7-A5.8: ERCuSi-A
AWS CLASS ERCuSi.pdf
