Alumina Alternative

[BAMTech]

Hello,
I am currently looking for a material that has similar properties to Alumina.
In the past we've looked at alternatives Albemet 162, 6061 Aluminum, 303 SST, AlSic, Titantium, 99% Alumina, Moly alloys, and T-Con.
Looking at something that has high stiffness, stronger than, or as strong as, Aluminum, preferably on the cheap side and can retain properties in environments around 1000°C.
We're open to any type of materials including fiberglass, ceramics and metals.
Thank you

 

[Ceramicguy]

Consider Silicon Carbide as an initial stab at recommending a replacement. It is strong, stiff and light (and hard!). It is readily available commercially. Stay away from the infiltrated stuff. The sintered, reaction bonded and hot pressed materials may all be appropriate for your application. Get in touch with me through the contact page of my website and we can discuss your application in more detail.

Bruce

http://www.accuratus.com

 

[BAMTech]

Forgot to mention that in the Orignal Post. We have looked at silicon carbide but the material means we'd require on too many outside sources for tooling and machining.

 

[CastMetal]

Is 1000 deg C a typo? Every material you listed either has significant loss of strength (Ti, Steels) or melts (the rest of them). If that is a design requirement you might need to rethink your budget.

Comprehension is not understanding. Understanding is not wisdom. And it is wisdom that gives us the ability to apply what we know, to our real world situations

 

[BAMTech]

We've actually were able to use Moly alloys in that type of environment, and though its not cheap, they were able to handle the high temperatures. We realize that this a "fast, neat, and cheap; choose two" situation, if we're able to find something that encompasses all the properties we're looking at, but is pricey we'll look at.
Any suggestions would be most welcome.