Bibb, certainly not an expert here, but spotwelded 304 is everywhere. Think of anything - BBQ bits, potbelly stove flues and hats, v-bands for exhaust systems etc...
If it were me, I'd be grabbing some of the band-it strapping you have, whacking it through your old welder and giving it the standard panelbeating destruction test (tearing the weld apart).
Is there some nasty environment that your bits are going to end up in which requires a higher grade?
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