Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
(OP)
thread307-108364: Titanium and 316 Stainless
We currently have a product where we are supplying Titanium ASTM B348 Grade 2 Bolts, washers, and nuts specified by our customer. These bolts will be in contact with 316 Stainless steel sleeves that we have bonded into our polyurethane parts. The possible contact areas will be between the washers and the pipe ends and between the threads of the bolts and the i.d. of the pipe. We are worried about possible corrosion between the two dissimilar metals. These parts will be in an offshore environment. They may be wetted with salt water but I don not believe they will be submerged. Is anyone aware of any issues between these two metals? I linked a thread that I found through searching but no follow up was given. All that was said is that there may be a problem. Any assistance would be greatly appreciated.
We currently have a product where we are supplying Titanium ASTM B348 Grade 2 Bolts, washers, and nuts specified by our customer. These bolts will be in contact with 316 Stainless steel sleeves that we have bonded into our polyurethane parts. The possible contact areas will be between the washers and the pipe ends and between the threads of the bolts and the i.d. of the pipe. We are worried about possible corrosion between the two dissimilar metals. These parts will be in an offshore environment. They may be wetted with salt water but I don not believe they will be submerged. Is anyone aware of any issues between these two metals? I linked a thread that I found through searching but no follow up was given. All that was said is that there may be a problem. Any assistance would be greatly appreciated.





RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
Try googling Galvanic corrosion Titanium and 316.
e.g.
http://
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
SJones where would you see crevice corrosion being a problem? Are you referring to the interface of the SS sleeve and the bottom of the washer? If you do feel this is where the problem will arise how would you recommend preventing this?
I have included a sketch of the bolted cross-section in question. The yellow is polyurethane. Hope this helps.
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
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Plymouth Tube
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Corrosion between Titanium Fastners and 316 Stainless Steel Tubing