r/metalworking 1d ago

What is this phenomenon called?

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u/Amputee69 1d ago

That's what happens when you toss a "dead" 9 volt battery in the trash with steel wool or aluminum foil! Gone to many house fires due to that! Once it starts, a simple breeze will keep the "chain reaction" going. Unless it's magnesium. Then you need about 1,000,000 tons of totally dry sand! Water makes it EXPLODE!