Welding Wire

Welding wire provides filler metal for MIG, GMAW, and compatible flux-cored welding work. This category includes wire for carbon steel repair and fabrication, auto body work, thin-gauge steel, stainless steel maintenance and repair, and aluminum applications such as truck frames, cargo tanks, and diesel engine bases.

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Helpful Buying Guide

Choose Welding Wire for Your Material and Welding Setup

Start with the metal being welded, then match the wire type, diameter, operating requirements, and spool or ordering quantity to the work. The available options include solid MIG wire for mild steel, stainless steel, and aluminum, plus self-shielded flux-cored wire for compatible thin-gauge carbon steel work.

Visual Guide

Popular examples in this category

ER70S-6 Mild Steel MIG Welding Wire, 0.035 in. Diameter, 44 lb SpoolER70S-6 Mild Steel MIG Welding Wire, 0.035 in. Diameter, 44 lb SpoolWBB2825380ER70S-6 Mild Steel Solid MIG Welding Wire, 0.030 in, 10 lb SpoolER70S-6 Mild Steel Solid MIG Welding Wire, 0.030 in, 10 lb SpoolWBB2397134ER70S-6 Mild Steel MIG Welding Wire, 0.045 in., 44 lb SpoolER70S-6 Mild Steel MIG Welding Wire, 0.045 in., 44 lb SpoolWBB2825381ER308L Stainless Steel MIG Welding Wire, .030 in. Diameter, 2 lb SpoolER308L Stainless Steel MIG Welding Wire, .030 in. Diameter, 2 lb SpoolWBB3160008
Use Cases

Match wire to the job

Mild steel MIG wire is represented for auto body repair, fabrication, and carbon steel sheet or plate work. Stainless wire is listed for compatible stainless steel grades and maintenance or repair work. Aluminum wire is used for MIG welding applications including truck frames and cargo tanks.

How to Choose

Check material, process, and diameter

Select a wire designed for the base material, then verify the welding process and compatible wire diameter. Listed diameters include 0.030, 0.035, and 0.045 inch. Also confirm required polarity and whether external shielding gas is needed.

Applications

Plan for surface condition and thickness

ER70S-6 mild steel wire has manganese and silicon content for work on rusty or dirty steel where thorough cleaning may not be practical. Gasless flux-cored wire is listed for single-pass welds on carbon steel from 3/16 inch to 22 gauge and can weld over galvanized material.

Additional Info

Review spool and order details

Listed spool sizes range from 1 lb to 44 lb. Some products have stated minimum order quantities, including a minimum of 3 each for one aluminum wire and an effective minimum of 4 for certain ER70S-6 wire listings.

4Wire types represented

Mild steel, stainless steel, aluminum, and gasless flux-cored options are included.

0.030–0.045 in.Listed wire diameters

Available represented diameters include 0.030, 0.035, and 0.045 inch.

1–44 lbListed spool sizes

Representative spool weights range from 1 lb through 44 lb.

3/16 in. to 22 ga.Flux-cored steel range

Listed E71T-GS wire supports single-pass carbon steel work across this range.

Comparison Guide

Compare Welding Wire Types

Use this overview to compare the material focus, typical uses, and listed setup details for the represented wire types.

Wire typeMaterials and applicationsListed setup details
ER70S-6 mild steel MIGCarbon steel, most ferrous metals, auto body repair, fabrication, sheet, and plateArgon/CO2 and DCEP are listed for certain options; 0.030, 0.035, and 0.045 in. diameters represented
ER308L stainless steel MIGCompatible stainless grades including 301, 302, 304, 308, 321, and 347; maintenance and repairArgon or argon/CO2 shielding gas; DCEP; 0.030 in. diameter
E71T-GS gasless flux-coredSingle-pass thin-gauge carbon steel; galvanized material and certain aluminized surfacesNo external shielding gas; DCEN; 0.030 and 0.035 in. diameters
ER5356 aluminum solid MIGAluminum work including diesel engine bases, truck frames, cargo tanks, and gun mount basesFor MIG or GMAW equipment; 0.035 in. diameter; smoother feeding on push-type MIG welders
Planning Guide

Plan the right fit before choosing

Wire Types

Understand the available welding wire options

The category represents several wire formulations for different welding materials and processes.

  • ER70S-6 mild steel solid MIG wire supports carbon steel and most ferrous-metal repair and fabrication work.
  • ER308L stainless steel MIG wire is listed for compatible grades including 301, 302, 304, 308, 321, and 347.
  • ER5356 aluminum solid MIG wire provides an aluminum option for MIG or GMAW work.
  • E71T-GS gasless flux-cored wire supports compatible single-pass thin-gauge carbon steel welding without external shielding gas.
Setup Considerations

Confirm gas and polarity before selecting wire

Wire type affects the equipment setup required for compatible operation. Review the listed operating details alongside your welding equipment requirements.

  • ER308L stainless steel wire is listed for argon or argon/CO2 shielding gas and DCEP reverse polarity.
  • E71T-GS gasless flux-cored wire requires DCEN straight polarity.
  • Listed ER70S-6 wire options include argon/CO2 and DCEP compatibility.
  • ER5356 aluminum wire is described for MIG or GMAW equipment and helps promote smoother feeding on push-type MIG welders.
Finish and Workflow

Consider bead appearance and cleanup needs

For repair and fabrication work, wire characteristics can help guide choices around surface preparation and post-weld finishing.

  • High manganese and silicon in listed ER70S-6 wires support deoxidizing action on rusty or dirty steel.
  • High-silicon ER70S-6 formulations are described as promoting weld-pool fluidity and a smoother bead appearance.
  • Some ER70S-6 options may reduce post-weld grinding or cleanup.
  • The listed ER308L wire has a stated tensile strength of 120,000 psi for weld planning.
FAQ

Common questions before buying

What welding wire is listed for rusty or dirty steel?

ER70S-6 mild steel MIG wire is described with manganese and silicon content that helps support welding on rusty or dirty steel surfaces.

Which wire can be used without external shielding gas?

E71T-GS gasless flux-cored wire is self-shielded and is listed for compatible welding work without an external shielding gas supply.

What polarity does gasless flux-cored wire require?

The listed E71T-GS gasless flux-cored wire requires DCEN, or straight polarity.

What stainless steel grades are listed for ER308L wire?

ER308L wire is listed for compatible stainless steel grades including 301, 302, 304, 308, 321, and 347.

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