SiGA® Components

General Atomics Electromagnetic Systems’ (GA-EMS) SiGA is an advanced silicon carbide (SiC) composite in that it uses flexible SiC fibers embedded into a SiC matrix material to form an exceptionally hard and durable structure—engineered to withstand the harshest conditions.

In addition to its proven performance in fission applications, SiGA is under consideration as a first wall or structural component for fusion reactors.

In short, SiGA enhances safety and durability across industries where components must withstand extreme environments—including space, nuclear energy, and advanced weapon systems.

Advanced Composite Material Profile

  • Complex structural designs fabricated using high-purity joining methods
  • Irradiation-resistant and oxidation-resistant formulations
  • Extensive in-house characterization capabilities to validate material and component properties
  • Thermal resilience – retains strength beyond 1600ºC

GA-EMS fabricates SiGA composites in complex planar, tubular, and custom geometries. Our proprietary joining method bonds silicon carbide (SiC) to SiC, as well as to other materials, in a variety of configurations.

These joints retain integrity and hermeticity under high temperatures, pressures, and neutron fluences. Finished SiGA® composites maintain strength and stability under intense irradiation and remain durable at temperatures exceeding 1600°C.

SiGA components are available in tube diameters from 5 mm to >50 mm and lengths up to 1 meter. Hot-pressed structures with thicknesses greater than 25 mm can be produced, and both blind and thru-hole features can be manufactured near-net-shape without machining.