Forney 42292 .035" ER7OS-6 Welding Wire 2 Lb Features : All position copper coated welding wire containing a high level of manganese and silicon to produce welds on dirty or rusty steelHigh silicon content provides fluidity of the weld puddle providing smoother bead appearance and minimizing post weld grindingSuperior wire surface finish for best feed ability and arc performance, increased manganese and silicon provide excellent cleaning action.Butt and fillet welding of carbon steel sheet and plate in industrial, farm, construction and automotive equipment applications.Requires CO2 or Argon/CO2 shielding gas (not included)Easy to read color coded packaging2 lb..035"The Forney 42292 .035 (ER-7OS-6) Mild Steel MIG welding wire is a high strength mild steel MIG wire. Ideal for auto body repair and fabrication on most ferrous metals. Contains a high level of manganese and silicon for a superior weld, even on rusty, dirty steel. Produces a smooth bead which requires less grinding. Not recommended for aluminum engines. Yellow color coding on label. MIG welding wire selection is based primarily on the base metal composition. In general, the finished weld metal should have mechanical properties similar to those of the base material. Tensile Strength is 70,000 PSI. Polarity is DCEP Reverse Polarity. Required Shielding Gas is Argon/CO2 mix. Wire Diameter is .035 inches (.9 mm). The Weight is 2 pounds (.907 Kg). MIG wire has a classification of ER70S-6. The (ER) stands for Electrode or Rod. The (70) means tensile strength, 70,000 PSI. (S) Stands for solid wire and the (-3) or (-6) is the chemical composition and shielding gas required. Forney wire is classified as a -6 wire. This makes it easier to use on less than clean material that may have some rust or dirt.