There are service providers currently printing C18150 and at least one printing
GR84. 18150 is preferred for both cost and availability.
On Apr 6, 2017, at 2:31 PM, Graham Sortino (Redacted sender "gnsortino" for
DMARC) <dmarc-noreply@xxxxxxxxxxxxx> wrote:
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
