Cheers Jon. Thanks for letting me know. I guess I got a bit excited that
GrCop-84 engines were actually being 3d printed. Hopefully soon...
On Wednesday, April 5, 2017, 8:34:02 PM EDT, Jonathan Goff <jongoff@xxxxxxxxx>
wrote:Graham,
I heard today that the copper alloy AJR used was actually something a lot more
mundane than GrCop-84. It was a C182 Chromium Copper. IIRC both Masten and XCOR
have used these in the past for copper engine chambers. It's heat treatable,
has a pretty good thermal conductivity (I think they said it was higher than
GrCop84), while having decent softening temperatures. Nothing amazing material
properties wise, but nothing too shabby either.
FWIW,
~Jon
On Tu
