We have been using Hoover's 950 TruPd as a casting alloy with good
results. It is definitely a very tricky alloy to cast (as is the
case with all Pd) but if you have a good platinum casting system and
use an induction machine with vacuum and argon back fill you should
be able to get good castings. Palladium really likes to absorb gas so
torch melting would be a difficult method at best.
Another caution is the flow of this metal. It has behaved well with
most designs, however filigree and very thin walled pieces have had
a tendency to no-fill when compared to the same designs in platinum.
Other than that, the as-cast hardness is decent at Hv110 (although
I'd like to see it at 135 and Hoover is working on that) and the
recycle ability is good. Laser is great with Pd, and I agree with the
last post that lasering with argon is better.
I am writing a paper on palladium casting for Santa Fe Symposium
this year so a lot more experimentation and to come!
TechForm Advanced Casting Technology