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Galvannealed Steel and Aluminum

Galvannealed Steel and Aluminum

Galvannealed Steel and Aluminum

(OP)
Do you need a barrier (protective coating)when galvannealed sheet steel is mounted to aluminum? I would think no, but wanted to confirm. Thank you!

RE: Galvannealed Steel and Aluminum

Atmospheric conditions?
Relative sizes?

RE: Galvannealed Steel and Aluminum

(OP)
It is vehicle application - so normal road wear and conditions. Sizes vary -- mainly brackets (3-5" mating size).

RE: Galvannealed Steel and Aluminum

"vehicle application" covers a wide variety of conditions. Is this somewhere that road salt/slush will be splashing on? Will it drain cleanly, or will water collect? Is it inside the passenger compartment? Behind the dash?

Aluminum should only slightly accelerate corrosion of the galvanneal under most conditions. Salt and high time-of-wetness are the major concerns.

RE: Galvannealed Steel and Aluminum

Should be ok

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