Thread: Length of a rifle with welded on suppressor?

Originally Posted by PaulNZ

Where did you take that quote re. galvanic corrosion? I would think that galvanic corrosion would be the least of the potential issues. Firstly, galvanic corrosion requires dissimilar metals, electrical contact and an electrolyte (e.g. water). When dry, no corrosion issue. Also, the galvanic difference between stainless and carbon steel is low, so driving force for corrosion is also low. Accelerated (slightly) corrosion in such a couple would also be expected on the carbon steel, not the stainless component.

Plenty of rifles have both carbon steel and stainless components. The issue is overstated in my opinion. If welding is the right idea (I'm not really commenting on the welding approach), then weld it on with 309 filler assuming a 304 or 316 stainless suppressor. Unless anyone knows whether stainless suppressors are likely to be a different alloy?

Burnt powder attracts water vapour and acts as a great electrolyte for electrolysis. It has been the demise of many crowns and threads where an aluminium can has been left on. Not sure how stainless would go. If the suppressor is fixed and you cannot clean well enough it could be an issue.