Products > High Temperature Composites > UHT-21

UHT-21

PSI’s UHT-21 is a refractory-modified C/SiC CMC with service temperatures up to 5000°F.

Capability Description:

The UHT-21 CMCs produced by PSI have service temperatures up to 5000°F. These composites are fabricated with a specialized refractory blend and are compatible with our PSC-10 materials system as well as our Direct Z-pin Insertion and Flexible TPS manufacturing methods.

Key Features:

Carbon fiber reinforced CMC with a refractory-modified SiC matrix phase
Demonstrated Service Temps >4500°F
Seamless integration with PSC-10 as a hybrid system, compatible with Z-pinning and Flex TPS products.
Refractory blend is added at the prepreg state enabling full processing compatibility with our PSC-10

Rotating Detonation Engine Outer body fabricated with UHT-21 in the hot section (flow path) of the component.

PSI Products

High Temperature Composites

PSC-10

Baseline C/SiC CMCs with service temps up to 3000°F

UHT-21

Refractory-modified C/SiC CMCs with service temps up to 5000°F

Hybrid Composite Systems

Co-fabrication of PSC-10 and UHT-21 to save weight and cost without loss of performance.

Castable, Chopped Fiber Composites

Low-cost, castable C/SiC alternative to our laminated composites

Pre-preg Braiding of Organic Composites

Rapid fabrication of organic preforms via braiding of woven pre-preg tapes

Direct Z-pin Insertion

Z-directional reinforcement of laminated composites without loss of properties in x-y plane

Flexible Thermal Protection Systems

Thin, stackable CMC sheets with bend radii as small as 3.5”

Chemical Vapor Deposition

Coating application to fibers and fabrics