A weld, or right next to it, often corrodes earlier because of the electrochemical differences in the material, due to different alloying elements, larger precipitations, coarser grain structures, bad welding/backing gas settings, wrong filler material, lack of passivation or combinations thereof.

I thought that also the magnitude and propensity of the corrosion are seemingly higher in welds than in plates and sheets due to the higher stored energy in the microstructure”. But after consultation with experts the top part of this text is of greater influence in forming pitting and starting corrosion in or close to welds.

Some scrubber manufacters do offer periodic scrubber passivation restoration. Wink, wink, nuts, nuts….. we can be of help!

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