Washington Alloy

ERCuSi-A - Silicon Bronze, 10lb. Pack

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Minimum Purchase:
1 unit
$200.00 - $254.80


ERCuSi-A  (Priced and Sold as a 10lb. Pack)

High-Performance Copper Alloy TIG Welding Rod.

AWS A5.27 Grade
Class ERCuSi-A
Available Diameters .035", .045", 1/16", & 3/32"
Length 36" (914mm)
Weight 10 lb. Pack

Price per pound:

  • .035" (0.89mm): $25.48/lb.
  • .045" (1.14mm): $20.00/lb.
  • 1/16" (1.6mm): $24.00/lb.
  • 3/32" (2.4mm): $19.68/lb.

Approximate number of rods per 10 lb. pack for each diameter:

  • .035" (0.89mm): 500 - 540
  • .045" (1.14mm): 360 - 400
  • 1/16" (1.6mm): 260 - 300
  • 3/32" (2.4mm): 120 - 160


ERCuSi-A Silicon Bronze is primarily used for TIG, Plasma and Oxy-Acetylene welding or brazing on Steel and Copper Alloys.

A chemical analysis of Copper and Zinc as well as alloying elements of 3% Silicon and small amounts of Tin and Manganese produce welds with excellent mechanical properties.

High strength, ductile and sound welds are easily attained by using a neutral or slightly oxidizing flame (especially on Copper Alloys).

Keep the weld pool small to promote fast solidification and minimize cracking.

A high Boric acid brazing flux is required for Oxy-Acetylene brazing.

Silicon Bronze is ideal for plain and zinc coated thin Steel sheet metal.

Proper procedures will produce tensile strengths of 50,000 psi.

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Additional Information

Wire Diameter:
.035" (0.89mm)
Wire Diameter:
.045" (1.14mm)
Wire Diameter:
1/16" (1.6mm)
Wire Diameter:
3/32" (2.4mm)
Pack Size:
10 lb. Pack
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1 Review

  • 5

    Great filler rod use it a ton on my metal are…

    Posted by Thomas P. on Nov 9th 2020

    Great filler rod use it a ton on my metal are great cost compared to other sites

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