> > 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.
>
>The numbers don't mean much to me, but I'm guessing from the sheet number
>about as good as an ordinary mild-steel MIG wire?
A bit less, but weld filler strength is almost never the failure
point in a weld. Incomplete fusion, gas inclusion, undercutting, and
such are more likely.
>It'd be welding 70x3mm tube and 41x3mm tube to a 6mm hot-dipped plate that's
>part of the chassis - basically given choice between it and grind the galv
>off and ordinary MIG weld which would you choose?
I'm not sure. I'd talk to my welding supplier -- they've got a guy
who knows all sorts of things. I'd suggest you do the same. If you
don't value your time, grinding and steel filler is cheaper, as
silicon bronze wire costs 4 or 5 times as much, and requires much
higher gas flow rates.
David
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