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Metal alternative to tantailum for strong acid high temps

thread367-69139

Metal alternative to tantailum for strong acid high temps

Metal alternative to tantailum for strong acid high temps

(OP)
Can anyone recommend an alterantive metal to tantalim for boiling mixtures of HCl from 1 to 20 %.  

We currently use various grades of hastalloy but they tend to suffer corrision and fail within 2-3 years life span.

Obviously you can use plastics but the tend to not be as strong.  Our temps go up to 180°C and in some applications to 230 deg C

RE: Metal alternative to tantailum for strong acid high temps

You're getting close to needing Au or Pt!

RE: Metal alternative to tantailum for strong acid high temps

I believe Zr can be used in these conditions - you can get information from Wah Chang at:

http://www.wahchang.com

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

RE: Metal alternative to tantailum for strong acid high temps

You might try pure Nb. How about a ceramic?

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