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an aluminum storage tank is resting on a steel angle iron

an aluminum storage tank is resting on a steel angle iron

an aluminum storage tank is resting on a steel angle iron

(OP)
I have constructed a water wall that contains aluminum water tanks that are supported by steel angle iron.

 Will the contact between the two different metals cause a chemical reaction which will cause a failure of either metal?

RE: an aluminum storage tank is resting on a steel angle iron

If you have an electrolyte present that is capable of corrosion (e.g. chloride ion in water), then you will have galvanic corrosion that will attack the aluminium.

RE: an aluminum storage tank is resting on a steel angle iron

To elaborate, you need a complete circuit - the steel and aluminum must be electrically connected and both immersed or wetted with electrolyte (chloride solution, et. al.).  If all the liquid is inside the tanks and their is no condensation or wetness on the iron to aluminum junction, or you have installed rubber padding between the two, the liklihood of galvanic corrosion is lessened.  But if there is corrosion in this pairing, aluminum will be the attacked metal.

Blacksmith

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