A non copper coated, G3Si1/ER70S-6 solid wire for GMAW of carbon-manganese steels. Purus 42 CF is particularly suited to be used in general construction, automotive components and mobile machinery industries. The wire may be welded with either a gas mixture or with pure CO2 as the shielding gas. Purus 42 CF is designed to give a clean weld bead with a minimum of silica islands, low fumes and extremely low spatter levels. The wire is suitable for robotic applications at high deposition rates.