Annually, the oil industry invests large amounts in pipeline maintenance, mainly in anti-
corrosion measures. Thus, solutions are sought that combine low cost, reproducibility and
consistent properties. One of them is the use of materials that have high mechanical and anti-
corrosive properties in the form of coatings that can be deposited by welding. This study aimed
to evaluate the effects of different welding parameters on the corrosion resistance of inconel
625 alloy coatings deposited by API 5L X70 steel by the PTA welding process , evaluate
samples with higher and lower dilution and use the parameters of these experiments to perform
SAW submerged arc welding coating in order to compare the processes. The parameters were
optimized through factorial experimental design and the results analyzed by the Response
Surface Methodology (MSR). The samples were mainly evaluated by dilution (D), iron content
(Fe) and resistance to corrosion by linear potentiodynamic polarization (PPL).
