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ERCuSi-A - Silicon Bronze, 1lb. Pack

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High-Performance Copper Alloy TIG Welding Rod.

AWS A5.27 Grade
Class ERCuSi-A
Available Diameters .045", 1/16", 3/32" & 1/8"
Length 36" (914mm)
Weight 1 lb. Pack

Approximate number of rods per 1 lb. pack for each diameter:

  • .045" (1.14mm): 36 - 40
  • 1/16" (1.6mm): 26 - 30
  • 3/32" (2.4mm): 12 - 16
  • 1/8" (3.2mm): 8 - 10


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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ERCuSi-A - Silicon Bronze, 1lb. Pack

5 of 5 Stars! (26)

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See All 26 Customer Reviews

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5 of 5 Stars!
I got exactly what I ordered as ordered very happy

Added:  by

5 of 5 Stars!
Customer service and product quality is always a given when dealing with arc-zone they are my number 1 choice! Thank you

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5 of 5 Stars!
As usual the people at Ark. Zone were quick with shipping and the tig rods that I received were exactly what I expected and M very pleased with the service

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5 of 5 Stars!
Hello - I have not purchased any SiBr from Arc-zone before, but I have used it since 1976 and it is a very low temp rod that can save engine blocks and other items, wonderful rod ! Ralph N.J.

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5 of 5 Stars!
These silicone bronze rods are clean and provide great weldibility with various types of brass.

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