00SIBF5 - Harris ERCuSi-A .035 Silicon Bronze MIG Wire 10lb Spool

Name: Harris ERCuSi-A .035 Silicon Bronze MIG Wire 10lb Spool
Brand: Harris
SKU: SB035-10
Price: 438.10 CAD
Availability: InStock

Packaging: 10lb spool

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SKU: SB035-10 Categories: Specialty Electrodes & Wires, Welding Wires and Electrodes

OVERVIEW

High-Performance Silicon Bronze MIG Wire for Versatile Joining

Unlock the versatility of your MIG welder with the Harris Silicon Bronze .035" MIG Wire. This 10lb spool is an essential consumable for fabricators, automotive restorers, and artists who need to join dissimilar metals or work with delicate coated steels. Silicon Bronze (ERCuSi-A) is famous in the welding industry for its ability to "braze weld," a process that creates strong joints without melting the base metal. This is a game-changer when working on automotive body panels or HVAC ducting made of galvanized steel.

Why choose Silicon Bronze over standard steel wire? The answer lies in heat and corrosion. When welding galvanized steel with standard wire, the high heat burns away the protective zinc coating, leading to rust issues later. Harris Silicon Bronze melts at a lower temperature, preserving more of that protective coating and reducing warping and distortion in thin sheet metal. It flows smoothly, creating a gold-colored bead that is both aesthetically pleasing and easy to finish. It is also the go-to solution for joining copper or brass to steel, allowing for creative fabrication possibilities that standard wires simply cannot handle.

This product comes on a standard 8-inch diameter spool, fitting most 200A+ MIG welders and many compact units with spool adapters. To get the best results, ensure your machine is set up with 100% Argon gas—standard C25 mix used for steel will not work with this alloy. Additionally, because bronze wire is softer than steel, we recommend using U-groove drive rolls if available to prevent wire shaving, and keeping your gun cable as straight as possible during operation. Whether you are repairing a vintage car, creating a metal sculpture, or fabricating industrial copper components, Harris Silicon Bronze wire delivers the professional results you demand.

Ideal Applications:

Auto body repair on galvanized sheet metal
Joining copper or brass components to steel frames
Artistic metalworking and sculpture
Surfacing parts for corrosion resistance
General fabrication involving dissimilar metals

Additional Information
Brand:Harris
Diameter:0.035 in
Grade:Silicon Bronze
Packaging:10 lb Spool
Weld Process:MIG (GMAW)
AWS Classification:ERCuSi-A
Spool Diameter:8"
Shielding Gas Requirement:100% Argon
Material Composition:Copper Silicon Alloy
Wire Type:Solid
Packaging Description:10lb spool
Position:N/A
Polarity:N/A

INCLUDED

1x 10 lb Spool of .035" Harris ERCuSi-A Silicon Bronze MIG Wire

APPLICATIONS

Welding copper-silicon alloys
Joining brass and bronze to steel
GMAW braze welding of galvanized or coated sheet steels
Automotive body repair and restoration
Artistic metalworking and sculpture
Surfacing for corrosion resistance
HVAC ductwork fabrication

FAQ

This wire requires 100% Argon shielding gas. Do not use CO2 or Argon/CO2 mixes typically used for steel, as they will cause oxidation and poor weld quality.

This wire meets the AWS A5.7 specification and is classified as ERCuSi-A.

Yes, but the process is technically 'braze welding.' The steel base metal is not melted; the bronze filler adheres to the surface. This is excellent for joining dissimilar metals or minimizing heat distortion.

Because silicon bronze is softer than steel, U-groove drive rolls are recommended to prevent flattening or shaving the wire. However, standard V-groove rolls can work if the tension is kept light.

This is a 10 lb spool with an 8-inch diameter and a standard 2-inch arbor hole.

Preheat is generally not required for thin sections or when joining to steel. However, when welding heavy copper base metals, some preheat may be necessary to ensure proper tie-in.

Use DCEP (Direct Current Electrode Positive), also known as Reverse Polarity, which is standard for most MIG welding applications.

Yes, it is highly regarded for automotive body work, especially on galvanized panels, because the lower heat input reduces warping and preserves the zinc coating better than steel wire.