I didn't read the entire article, but it sounds as though they have
developed a casting alloy that is roughly the same strength as
2024-T3. From the article:

The alloy can greatly improve piston durability because it is two
and half times stronger than conventional cast aluminum pistons at
high temperature and can be produced with a material cost of less
than $1 per pound. It exhibits dramatic strength at temperatures
as high as 500 to 700 degrees Fahrenheit.

Since the tensile strength of typical conventional casting alloys is
around 20K psi, that would make this alloy 50K psi, which is about the
same as 2024-T3.

Dennis.


(sanman) wrote:

Check this out:

http://www.sciencedaily.com/releases...0427054317.htm

Interesting stuff... I wonder if aviation homebuilders could benefit
from 2-stroke engines made with this stuff? Comments?

Dennis Hawkins
n4mwd AT amsat DOT org (humans know what to do)

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