Generally, properties of RHMs are between those of conventional metals and ceramics. Parts are made by conventional powder-metallurgy compacting and sintering methods. Many metal carbides such as SiC and BC are not RHMs but are true ceramics. Some ceramics have a second metal phase, but the metal is not used primarily for bonding. Four RHM systems are used for structural applications and, in most cases, several grades are available within each system.
Some grades are almost as corrosion resistant as platinum.
Nozzles, orifice plates, and valve components are typical uses. Titanium carbide in a molybdenum and nickel matrix is formulated for high-temperature service.