Haynes-230 Vs Supertherm Alloy (Temp Vs Deformation)

[Normankhan]

Good Day All
I need some info from you folks.
We are currently using Supertherm Alloy in our Oxygen pre-heater (furnace),At our current operating temp close to 950C. we get sudden elongation due to high oxidation rate. I had a metallurgical analysis and found that under high temp, oxidation is high and supertherm becomes softer.I indeed find one supporting attached doc.in which you can see that obve certain temp (Approx 790 C), the supertherm indeed deforms at large. same behaviour is for Inconel-601.now aninquiry has came to me regarding Haynes-230 that if we select this alloy in replacing Supertherm than how would be the performance??? under high temp. Can someone provde me the similar graph (attached) for temp Vs Ductile{%elongation} to get an idea that how it behavious like supertherm or Inconel-601?? One more thing can some one also provide me chemical composition of supertherm?? Is it different from Inconel-601?? right???
Thanks
Norm

 

[metengr]

Normankhan;

I would suggest you start with visting the web site below

http://www.haynesintl.com/search.asp?zoom_query=230

 

[metengr]

As a follow-up, here is information on the chemical composition of Supertherm

http://books.google.com/books?id=8T...6AEwCDgK#v=onepage&q=supertherm alloy&f=false

 

[unclesyd]

At your temperature and conditions it is pretty hard to say if one alloy is better than the rest as the minor details will kill you. A rough comparison can be made if you pick a specific condition and compare each alloy at that point. I've always made a table that included a place for the little notes.

http://www.hightempmetals.com/techdata/hitempHaynes230data.php

I would contact Haynes as suggested above as well as the following to discuss your requirements. You need to have all your operating parameters at hand like total atmosphere, operating cycles, etc.

http://www.hightempmetals.com/techdata/hitempHaynes230data.php

http://www.rolledalloys.com/productline/heatresis.aspx

Get hold of a field service engineer in your area and discuss your requirements.

http://www.duraloy.com/duraloycontact.html