> > You could also use a silicon bronze welding wire with 100% Argon
>> shielding gas. This requires less surface prep, as the silicon
>> bronze filler has good affinity for the zinc, resulting in much less
>> loss to evaporation. Silicon bronze also has greater corrosion
>> resistance than steel fillers, so it's not always necessary to repair
>> the damaged galvanized surface. That's probably a moot point, since
>> you're likely going to be painting the footwells, but it's a big win
>> for things like HVAC use -- And galvanized chassises, too. You still
>> don't want to breath the fumes, but good ventilation should be
>> enough without needing a positive pressure system.
>
>What is the strength of this like? (Thinking of it for welding rollcage to a
>galv chassis - 6mm plated already but then galved) Else I can grind the top
>plates and have it welded normally.
Depending on the alloy 35K to 70K PSI. Galvanized sheet is about 50K
PSI tensile strength. There are also aluminum bronzes available,
which have higher strengths. Silicon bronze is pretty commonly used
in automobile production these days.
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