Rhenium-bearing alloys can
withstand higher operating temperatures and therefore help an
engine burn fuel more efficiently and boast lower emissions,
but engine manufacturers like Pratt & Whitney and
Rolls-Royce Group Plc have been working to reduce their use of
the specialty metal nonetheless due to its hefty price tag.
Rhenium is about $1,950 to $2,050 per pound in-warehouse
Rotterdam, duty unpaid, according to AMM sister publication
Metal Bulletin, although most engine makers are believed to
source a portion of their rhenium from major supplier
Molibdenos y Metales SA (Molymet) under long-term contracts at
below-market prices of less than $1,000 per pound. Some of
those long-term agreements are due to expire...