Titanium corrosion

[Zimmerframe]

Saw this and thought it was interesting, especially for anyone swapping parts out for titanium, though few of us would be welding it...

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded, those made in winter didn’t. Here’s why.

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded but those made in winter didn’t. Here’s why.

theaviationgeekclub.com

 

[johnnystorm]

Saw this and thought it was interesting, especially for anyone swapping parts out for titanium, though few of us would be welding it...

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded, those made in winter didn’t. Here’s why.

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded but those made in winter didn’t. Here’s why.

theaviationgeekclub.com

It's interesting that after all the hassle that went into designing and making the Blackbird (Read Ben Rich's book, it's brilliant) that they didnt use purified water at the outset. The first batch of Packard built Merlins for the Mustang P-51 kept failing and it took visiting Rolls Royce engineers to point the quenching tanks weren't "pure" (Packard workers would tip their cold coffee into the tanks, etc.).

 

[skizzian]

Saw this and thought it was interesting, especially for anyone swapping parts out for titanium, though few of us would be welding it...

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded, those made in winter didn’t. Here’s why.

SR-71 Mach 3 spy plane’s titanium parts made in summer corroded but those made in winter didn’t. Here’s why.

theaviationgeekclub.com

fascinating!
such tiny amounts of material breaking the surface oxide causing galvanic corrosion...

 

[RickBullotta]

I have an unrelated but funny titanium story. I was working in a steel mill in the 1980's, doing heat treating of plate products. We had a batch to run and I was using a magnet crane to try to pick up the plates and put them into the furnace, and it wasn't working. My co-workers were 100 feet away laughing their asses off. I called maintenance to come check on the crane, and they walked over and told me that I was trying to pick up titanium plate and that it wasn't magnetic. D'oh!