Uses & Applications

Applications and End-Uses for Samarium

Samarium (Sm) is a high-criticality rare earth element with annual global production of approximately 2,500 tonnes REO. 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.

Key Applications

The primary end-uses of Samarium span multiple sectors. The following applications represent the most significant sources of global demand:

• Samarium-cobalt permanent magnets - Samarium is valued in samarium-cobalt permanent magnets for its unique physical and chemical properties that are difficult to replicate with alternative materials.
• Defense and aerospace magnets - Samarium is valued in defense and aerospace magnets for its unique physical and chemical properties that are difficult to replicate with alternative materials.
• Cancer radiation treatment - Key alternatives include Lu-177 therapy, Ra-223 (Xofigo). Different radioisotopes serve different cancer treatment niches; Sm-153 specifically targets bone metastases with beta radiation
• Nuclear reactor control - Samarium is valued in nuclear reactor control for its unique physical and chemical properties that are difficult to replicate with alternative materials.

Product Forms and Specifications

Samarium is commercially available in 3 primary product forms, each serving different industrial requirements:

Demand Outlook

Samarium appears on both the USGS Critical Minerals List and the EU Critical Raw Materials List, underscoring its strategic importance across Western economies. Growing demand from electrification, digitalization, and defense modernization is expected to place additional pressure on the Samarium supply chain through the end of this decade.