High Temperature Metal Applications

[kipp]

Is anyone aware of any metals that can perform in a high temp. environment(1500 deg. F.)and still maintain their mechanical properties? Thanks in advance.   

 

[ecampos]

Yes, High Silicon-Molybdenum Ductile Iron can withstand temperatures greater than 1500F.&nbsp;&nbsp;This is used for turbocharger housings and engine exhaust components.&nbsp;&nbsp;Refer to <A HREF="

http://www.castsolutions.com/"

TARGET="_new">

http://www.castsolutions.com/</A>

for more info. <p>Edson Campos<br><a href=mailto:edsoncampos@earthlink.net>edsoncampos@earthlink.net</a><br><a href= > </a><br>

 

[kgasko]

Yes, what kind of atmospheres? Molybdenum and its alloys - TZM and ODS Moly are great at High temperatures and in reducing atmospheres - like Hydrogen - or in vacuums. kgasko

 

[borjame]

A lot of Nickel alloys are fine at 1500 degrees F, but their properties drop off over 1500 degrees F(I assume you're talking about Modulus of Elasticity and tensile strength). Mar-M-247, IN 939 are good, Inco 625 isn't bad. Mar-M-509 which is a Cobalt is also not bad. A lot of other requirements will come into this like is your part cast, forged, machined etc. ? Molybdenum alloys might be tough to fabricate but it depends on the part.

 

[rjw57]

Kipp,

It would be really helpful if you could give a little background on what type of environment the metal would see (other than hot ), i.e. atmosphere composition, pressure, gas velocities, etc. It would all help in answering your questions. Also, no material (mettalic) that I know of will have exactly the same high temperature properties as those at room temperature. You are in the area where for extended service life, a phenomena called creep becomes an issue (long term strain leading to eventual rupture). Could you consider the use of graphite. Graphite (fine for vacuum) will actually strengthen in some cases as it is heated.