bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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Steel - Aluminum corrosion (self.bikewrench)

submitted 9 months ago by evasync to c/bikewrench

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I have a steel frame and I'm looking on getting aluminum parts (eg: seatpost, headset etc)

Is Corrosion a concern?

Will I need to service the bike more frequently?

Is lube between the two metals going to make any difference?

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[–] chrisp999 4 points 9 months ago

You are creating a galvanic cell so if it gets wet you will definitely get corrosion. Luckily the aluminum parts are the ones that are more anodic and corrode so you wouldn't be ruining the frame.

If the lubricant isn't conductive it would at least help.

https://www.mcfeelys.com/galvanic_corrosion