Aluminium on steel corrosion - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KA24DESOneThree · 02-05-2021, 08:21 AM

Anti-seize between the parts. Surface coating (paint or plating/anodizing- the zinc in zinc-plated parts becomes sacrificial and hard-anodized aluminum is not conductive) on both parts. Keep parts as dry as possible.

Car and trailer manufacturers use non-conductive plastic tape. Not possible if we're talking wheel/hub interface, so that's where the anti-seize/surface coating comes in.

If the part is immobile, like an alloy strut brace, you can ground a zinc anode to the aluminum and replace it when necessary. It'll corrode rather than the steel of the body, nuts, or studs and the alloy of the strut brace.

PS- it's called galvanic corrosion and there's a ton about it on the 'net. Lots and lots of solutions out there.

02-05-2021, 08:21 AM	#3
KA24DESOneThree Post Whore! Join Date: Feb 2004 Location: SD County SoCal Age: 39 Posts: 2,564 Trader Rating: (2) Rides Gallery: KA24DESOneThree Feedback Score: 2 reviews	Anti-seize between the parts. Surface coating (paint or plating/anodizing- the zinc in zinc-plated parts becomes sacrificial and hard-anodized aluminum is not conductive) on both parts. Keep parts as dry as possible. Car and trailer manufacturers use non-conductive plastic tape. Not possible if we're talking wheel/hub interface, so that's where the anti-seize/surface coating comes in. If the part is immobile, like an alloy strut brace, you can ground a zinc anode to the aluminum and replace it when necessary. It'll corrode rather than the steel of the body, nuts, or studs and the alloy of the strut brace. PS- it's called galvanic corrosion and there's a ton about it on the 'net. Lots and lots of solutions out there.