Bolting surface treated steel to stainless steel 4

[Ledub]

I have a stainless steel bracket, and I need to attach another bracket to it. My client wants to reduce cost and use steel with a surface treatment and bolt that to the stainless steel bracket. My concern is that this will rust. My question is; will this rust or is there a surface treatment for the steel that will prevent this?

Thanks!

 

[kingnero]

Depends. if it's dry enough, it won't rust. ever.
What's the surface treatment? What are the atmospheric conditions? What kind of a bolt are you using? ...

 

[Ledub]

It is a consumer product and it is used outdoors. The bolts will be stainless steel. The surface treatment will probably be galvanizing. If there is a better surface treatment for this situation please let me know.

 

[CoryPad]

Galvanizing against stainless will be lousy. Better to use organic coatings (paint).

 

[Screwman1]

Try Dacromet or Stalguard coating on the bolts. Cory is right, the galvanic will eat up that galvanized/ SS couple.

 

[TomDOT]

Does the first bracket have to be stainless? Can you just go all hot-dip galvanized?

HDG is generally more durable than various paints. Less so in a marine environment.