The OK Autrod 12.64 is a copper-coated, Mn-Si-alloyed G4Si1/ER70S-6 solid wire. It is designed for the GMAW of non-alloyed steels, commonly used in general construction, automotive components, pressure vessel fabrication, and shipbuilding. With a slightly higher manganese and silicon content than OK Autrod 12.50, it offers increased weld-metal strength. This unique composition also reduces sensitivity to surface impurities, ensuring smooth, sound welds. The higher manganese and silicon content also contributes to the wire's overall performance, making it a reliable choice for welding non-alloyed steels. The wire is compatible with both Ar/CO² mixed gas and pure CO² shielding gas.