Engineered for Extremes—SiC Composites for Nuclear, Space, and Flight.

At General Atomics Electromagnetic Systems (GA-EMS), composites are a core capability driving innovation across nuclear, space, and flight systems. Our advanced materials, including silicon carbide (SiC), ceramics, and high-performance polymers, enable compact designs, improved fuel efficiency, and exceptional durability in the world's harshest environments.

SiGA^®, GA-EMS’s proprietary silicon carbide composite fuel rod technology, has been recognized by the Department of Energy and the Nuclear Regulatory Commission as transformational for light water reactors.

Building on this expertise, GA-EMS continues to expand its composite fabrication capabilities to support emerging applications in next-generation energy systems, space nuclear propulsion, and an array of non-nuclear areas such as hypersonics.

Silicon Carbide (SiC) Fiber

Engineered for Extremes—SiC Composites for Nuclear, Space, and Flight.

General Atomics Electromagnetic Systems’ (GA-EMS) engineered composites, silicon carbide fibers provide essential tensile strength. We are committed to onshoring production to ensure a secure, domestic supply for critical civilian and defense needs.

SiGA^® SIC Composite Fuel Rods

Silicon carbide composites in complex geometries with engineered structure and tailored performance to meet customer needs

General Atomics Electromagnetic Systems (GA-EMS) is modernizing the current nuclear fleet, creating fuel rods that are fully ceramic, able to withstand high temperature nuclear reactor conditions.  As a drop-in replacement for metal rods, they will enhance the safety of today’s reactors because SIGA rods do not melt like metal rods.