Sm
Rare Earth Element High Criticality

Samarium

About Samarium

Samarium is a rare earth element best known for samarium-cobalt permanent magnets that operate reliably at temperatures too high for neodymium magnets. These magnets are preferred in military and aerospace applications where thermal stability is critical. Samarium-153 is also used in medicine for treating bone cancer pain through targeted radiation therapy.

Primary Uses

Samarium-cobalt permanent magnets Defense and aerospace magnets Cancer radiation treatment Nuclear reactor control

Top Producing Countries

1 China
2 Myanmar
3 Australia
4 United States

Quick Facts

Symbol
Sm
Atomic Number
62
Category
Rare Earth Element
Criticality Level
High
Supply Risk
High
Top Producer
China
USGS Critical List
Listed
EU CRM List
Listed

Return to the full Mineral Library to explore other critical and strategic minerals.