Re: I need to vent, strong language used FYI

Posted by Peterwh on Nov 08, 2011; 10:59pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/I-need-to-vent-strong-language-used-FYI-tp3488712p3492013.html

Tools makes a very good point about brazing but either brass or steel must be higher than the other in the reactivity series ie one is more reactive than the other, because they cannot be equally reactive.  Therefore, one would corrode over the other.  I'm just not sure of where they lie.  The reason it works for galvanising (zinc) and steel is that zinc is just slightly more reactive than iron so the zinc corrodes in preference to the iron.  This works even if the coating of zinc is breached somewhat.  The zinc in galvanising is not a protective coating, it is an electrolytic anode.  Lead and copper are less reactive than iron so the iron, in that case, would corrode before the copper or lead.  it's the same as the experiment of plating copper onto steel that you probably did in chemistry at school.