Titanium gr5 and CF8M stainless steel Galvanic Corrosion
Titanium gr5 and CF8M stainless steel Galvanic Corrosion
(OP)
Hi am exploring a design that uses Titanium 6AL-4V GR5 for cost reduction;the part would be contact with a cast cf8m part, it will be submerged salt water mix of Sodium Bromide, Sodium Chloride @ 20 to 50°C at a max 35bar pressure. Would the design get away with galvanic corrosion and an eddy current. If not what stainless material would be recommended for this application?
Any reference links would be helpful thanks
Any reference links would be helpful thanks





RE: Titanium gr5 and CF8M stainless steel Galvanic Corrosion
Is the Ti being used for corrosion resistance or because of loading requirements? If the contact point isn't under any high load, I find thin walled nylon 6/6 or equivalent plastic bearings solve the problem outright by isolating dissimilar metals from each other. Even if your contact point isn't a bolted connection, perhaps you make use of this approach in your application.
Cheers!
--Adam
RE: Titanium gr5 and CF8M stainless steel Galvanic Corrosion
RE: Titanium gr5 and CF8M stainless steel Galvanic Corrosion
I would expect some localized etching of the SS, but if you do have some inhomogeneity or surface condition issues with the SS then you could get rapid local attack.
Either electrical isolation or coating of the Ti would be the ways to minimize this.
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