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100996 - ER308LSi .035 Stainless MIG Wire - 33lb Spool

Packaging: 33 lb spool
$12.80/lb $268.29/33 lb spool only $8.13/lbSave 36%

In stock

OVERVIEW

Achieve Flawless Stainless Welds with ER308LSi MIG Wire

Take your stainless steel projects to the next level with our ER308LSi .035" MIG Welding Wire. Designed for welders who demand both aesthetic perfection and structural strength, this wire is the ultimate solution for joining 304 and 304L stainless steels. The "Si" in the name stands for Silicon, a key ingredient that transforms the way the molten metal behaves under the arc. If you have ever struggled with sluggish stainless puddles or ropey beads, this high-silicon formula is the upgrade you need. It increases the fluidity of the weld pool, helping it wash out smoothly to the edges for a professional, flat bead that looks as good as it holds.

Perfect for applications ranging from custom automotive exhaust systems to sanitary kitchen equipment, this .035" wire offers the versatility needed for medium-to-heavy gauge materials. The 33lb spool size is ideal for busy fabrication shops, ensuring you have plenty of material on hand for large jobs without constant interruptions to reload. Because it is a "Low Carbon" (L) alloy, you can weld with confidence knowing that the corrosion resistance of your stainless steel is preserved, preventing rust and failure in the heat-affected zone. This makes it an excellent choice for projects that will be exposed to moisture or mild chemical environments.

Using this wire is a pleasure thanks to its consistent feedability and arc stability. It works exceptionally well with Argon/CO2 mixes or Tri-mix gases, producing minimal spatter and easy-to-remove silica islands. This means less time cleaning and grinding, and more time welding. To get the best results, ensure you are using a Teflon or plastic liner in your MIG gun to prevent contamination from steel shavings, and use dedicated stainless steel wire brushes for cleaning. Whether you are building architectural railings or repairing industrial machinery, the ER308LSi wire delivers the smooth, shiny, and durable welds that define quality craftsmanship. Equip your MIG welder with this premium stainless wire and experience the difference in control and finish.

Additional Information
Aws Spec:ER308LSi
Brand:Central Wire
Diameter:0.035 in
Grade:308 HiSil
Packaging:33 lb Spool
Weld Process:MIG (GMAW)
Polarity:DC
Material Composition:Stainless Steel
Wire Diameter:0.035"
Wire Type:Solid
Shielding Gas Requirement:Argon/CO2 Mix, Tri-Mix (He/Ar/CO2)
Spool Size:33 lb
AWS Classification:ER308LSi
Applications:Food Service Equipment, Chemical Tanks, General Fabrication, Architectural
Packaging Description:33 lb spool

INCLUDED

  • 1 x 33lb Spool of ER308LSi .035" Stainless Steel MIG Wire

APPLICATIONS

  • Welding 304 and 304L Stainless Steel
  • Food and Beverage Equipment Fabrication
  • Chemical Processing Tanks
  • Architectural Stainless Structures
  • General Maintenance and Repair
  • Automotive Exhaust Systems

FAQ

The 'Si' stands for Silicon. ER308LSi has a higher silicon content (0.65-1.00%) compared to standard ER308L. This addition increases the fluidity of the weld puddle, improving 'wetting' action at the toes of the weld and resulting in a flatter, smoother bead profile. This can reduce post-weld grinding and finishing time.

For ER308LSi MIG wire, a mixture of Argon and CO2 (typically 98% Argon / 2% CO2) or an Argon/Oxygen mix (98% Argon / 2% Oxygen) is commonly used to ensure arc stability and minimize carbon pickup. Tri-mix gases (Helium/Argon/CO2) are also excellent, particularly for short-circuit transfer, providing a flatter bead and better penetration.

It is not recommended. ER308LSi is designed for welding 304 and 304L stainless steels. Welding 316 stainless requires ER316L wire, which contains Molybdenum to match the corrosion resistance properties of the base metal. Using 308LSi on 316 base metal may result in a weld with lower corrosion resistance than the surrounding material.

This solid MIG wire requires Direct Current Electrode Positive (DCEP), also known as Reverse Polarity. Ensure your welding machine is set up correctly to achieve a stable arc and proper penetration.

Yes, ER308LSi is commonly used in the fabrication of food service equipment and sanitary piping made from 304 or 304L stainless steel. The smooth bead profile helps minimize crevices where bacteria could accumulate, provided the weld is properly finished and passivated.

The 'L' stands for 'Low Carbon'. This indicates that the carbon content is restricted to a maximum of 0.03%. Low carbon content is crucial for preventing carbide precipitation during welding, which protects the weld area from intergranular corrosion and ensures the longevity of the joint.

This is a standard 12-inch diameter spool (33lb/15kg). It fits most industrial-sized MIG welders and wire feeders. It will not fit smaller hobbyist welders that only accept 4-inch (2lb) or 8-inch (10lb) spools without an external spool holder or adapter.

Yes, it is highly recommended to use a Teflon, plastic, or carbon fiber liner when welding stainless steel. Standard steel liners can contaminate the stainless wire with iron particles, leading to rust in the final weld. Additionally, ensure your drive rolls are clean and appropriate for solid wire (V-groove).
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