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-----Material Selection: Hastelloy C or Titanium?
Which material is more resistant to corrossion- Hastelloy C or Titanium? There is no limit to the cost. and the service in oil Refinery or Petrochemicals.
Kewal Sahni- Sarnia, Ontario, Canada
2001
2001
Kewal,
It depends on what acids, what alkalies and at what temperature you are operating at. On top of that comes the structural, i.e., tensile, modulus conditions along with weldability.
Why don't you go and get some corrosion resistance charts, like I have, on these and other metals? Mind you, if temperature & stress is not too much of a problem, heck, there are some plastics that will easily last longer than either of these materials.
No, I'm not at all biased, am I, as I was only in this field for 40 odd years. Whilst at it, have a gander at the Carpenter 20 series, too. The last time I was in your neck of the woods was at Polysar in the 70's ... Cheers from the wet but warm climate of B.C. where humidity and mosquitoes are far less!
Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
As Freeman says, it depends on the actual service conditions. Both are exceptional corrosion-resistant materials, and a quick review of the ASM Metals Handbook didn't reveal any obvious precautions for the use of either material. But you are at a metal finishing website, rather than a petrochemical one, so I have little expertise or practical experience in this and suspect that many of our other readers have the same limitations.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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2001
If there is no limit to the cost, my first expenditure would be to hire an expert in materials selection to help you with this question. The wrong selection of an expensive material could even exceed the financial limits of the petrochem industry. Either of these alloys could be a disaster in the wrong environment.
Larry Hanke
Minneapolis, Minnesota
2001
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We're working hard to make sure we find it the best new home.