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62181600 - Bonarc ER316LSi Stainless MIG Wire 1.6mm 15kg Spool

Packaging: 15kg spool
$52.00/kg $487.50/15kg spool only $32.50/kgSave 37%

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OVERVIEW

Smooth Flowing 1.6mm Stainless MIG Wire for Heavy Fabrication

When you are tackling heavy stainless steel projects, you need a wire that lays down smooth and fast. The Bonarc 316LSi 1.6mm MIG wire is built exactly for that purpose. The 'Si' stands for High Silicon, and for the welder under the hood, that translates to excellent fluidity. The puddle wets out beautifully to the edges, giving you a flat, professional-looking bead that requires far less grinding and polishing than standard 316L wire. It’s a huge time-saver when aesthetics and finish quality matter.

This 1.6mm (0.063") wire is a heavy hitter, designed for welding thicker plates and structural stainless components where smaller diameter wires just can't keep up with the required deposition rates. Whether you are fabricating large chemical tanks, heavy piping systems, or marine equipment, this wire delivers the penetration and fill speed you need to stay productive. The 15kg spool size is perfect for shop environments, reducing the frequency of spool changes during long production runs.

Bonarc has manufactured this wire to feed reliably through your gun, reducing bird-nesting and liner drag. It works best with DCEP polarity and Argon-based shielding gas mixes. If you are welding 316 or 316L grades and want a wire that combines the corrosion resistance of molybdenum-bearing stainless with the smooth handling of a high-silicon alloy, this is the spool to load into your feeder.

Additional Information
Brand:Bonarc
Diameter:1.6mm (1/16")
AWS Spec:ER316LSi
Grade:316 HiSil
Packaging:15 kg Spool
Weld Process:MIG (GMAW)
Polarity:DCEP
Material Composition:Stainless Steel 316LSi
Wire Diameter:1.6mm (0.063")
Wire Type:Solid
Shielding Gas Requirement:Argon + 1-2% Oxygen, Argon + 2-5% CO2
Spool Size:15 kg (33 lb)
AWS Classification:ER316LSi
Packaging Description:15kg spool

INCLUDED

  • 1 x 15kg Spool of Bonarc ER316LSi 1.6mm MIG Wire

APPLICATIONS

  • Chemical and petrochemical processing equipment
  • Food and beverage manufacturing machinery
  • Marine fittings and heavy structural components
  • Pharmaceutical tanks and piping
  • Pulp and paper industry equipment
  • Heavy-gauge stainless steel fabrication

FAQ

The 'Si' in 316LSi stands for increased silicon content. This improves the wetting action of the weld puddle, allowing the metal to flow more smoothly and creating a flatter bead profile compared to standard 316L.

For ER316LSi MIG wire, a mixture of Argon with 1-2% Oxygen or 2-5% CO2 is typically recommended to ensure arc stability and proper fusion.

Generally, no. 1.6mm (0.063") is a thick wire intended for welding heavier gauge materials (typically 1/4" and thicker). For thin sheet metal, 0.8mm (0.030") or 0.9mm (0.035") is preferred.

This solid wire is designed to be used with Direct Current Electrode Positive (DCEP), also known as Reverse Polarity.

While it can physically weld 304, it is generally over-alloyed for that purpose. ER308L is the standard choice for 304 stainless. ER316LSi is best reserved for 316/316L base metals or where molybdenum is required for corrosion resistance.

Yes, you should always use a Teflon or plastic liner when welding with stainless steel wire to prevent contamination from steel liners and to ensure smooth feeding.

This product comes on a 15kg (approximately 33lb) spool.

The 'L' stands for Low Carbon. This low carbon content helps prevent carbide precipitation during welding, maintaining the corrosion resistance of the stainless steel.