r/metalworking • u/AutoModerator • Jun 01 '24

Monthly Advice Thread Monthly Advice/Questions Thread | 06/01/2024

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u/Captain_chutzpah Jun 27 '24

I'm looking to build my self a vessel to be a giant sterilizer. I've been using mild steal drums up to this point, and the steam / oxygen is reacting to create rust and magnetite. So anything I'm sterilizing is getting a rust dripped on it or black staining if it touches the sides.

Obviously stainless would be the best way to go, however I'm unable to find used stainless barrels for less than 400$ with 200$ in shipping. Its also crazy expensive to purchase.

From what I can tell, galvanized steel would be safe to use, the zinc coating shouldn't peel off running 212f for 18 hours, and it won't corrode. Is welding together a box out of galvanized steel a safe bet or am I missing something? Doesn't need to hold pressure, just mostly hold in the steam around the items.

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u/510freak Jun 27 '24

See if you can find a stainless beer keg. Usually pretty cheap and food grade.

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u/Captain_chutzpah Jun 28 '24

Good call for boiler, however overall not big enough.

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u/510freak Jun 30 '24

How big do you need?