I don’t know which alloy you prefer, but the most popular (and
the best from a casting standpoint) is 900Pt alloyed with
iridium. Today’s price for this alloy is 34.99 per DWT. We also
have a $35.00 flask fee. If you are a fan of Pt950 alloyed with
cobalt or ruthenium, the price is $35.75 per DWT, a little higher
due to the Pt content. Many people find that the cobalt can be
difficult to work with, primarily due to oxidation when heat is
applied. The ruthenium is a better choice for most 950 needs.
Regarding finish, we supply castings in the unfinished condition,
ready for finishing and polishing. At the risk of sounding too
"commercial" our castings do take much less bench time due to
the higher density of our product and the low level of porosity.
Thanks for your interest!