1251086700 - ESAB OK Autrod 12.51 ER70S-6 MIG Wire .030 15kg Spool

Premium Mild Steel MIG Wire for Industrial Fabrication

The ESAB OK Autrod 12.51 is a premium quality, copper-coated solid wire designed for the Gas Metal Arc Welding (GMAW) of non-alloyed and low-alloyed carbon steels. Classified under AWS A5.18 as ER70S-6, this wire is engineered with elevated levels of Manganese (Mn) and Silicon (Si). These alloying elements act as powerful deoxidizers, making the OK Autrod 12.51 exceptionally capable when welding base materials that exhibit moderate levels of mill scale, rust, or surface contaminants. This chemical composition ensures a sound weld deposit with minimal porosity, even in less-than-ideal surface conditions.

One of the defining characteristics of the OK Autrod 12.51 is its high-quality copper coating. This surface treatment serves multiple technical purposes: it enhances electrical conductivity for efficient current transfer, reduces friction within the welding gun liner, and protects the wire from oxidation during storage. The result is superior feedability and arc stability, particularly at high currents, which reduces wear on contact tips and minimizes downtime associated with feeding issues. The wire is precision layer-wound on a 15kg spool, ensuring consistent payoff and preventing tangles that can interrupt automated or manual welding processes.

Mechanically, the weld metal produced by OK Autrod 12.51 offers excellent tensile strength (typically around 560 MPa) and impact toughness, making it suitable for critical structural applications. It is compatible with both Ar/CO2 mixed gases and pure CO2 shielding gas, providing flexibility depending on the required penetration profile and arc characteristics. This wire is widely utilized in general construction, automotive manufacturing, pressure vessel fabrication, and shipbuilding, where reliability and weld quality are paramount.