Tungsten Carbide is a composite material known for its extreme hardness and wear resistance. It is chosen for flow cages because it excels in applications where standard materials like stainless steel would rapidly fail. The key advantages are:
Exceptional Erosion Resistance: In applications involving high-velocity fluids, slurries, or entrained solid particles, erosion is a major concern. Tungsten Carbide's incredible hardness (significantly higher than steel) allows it to resist being worn away, ensuring long-term accuracy and preventing costly leaks.
Superior Cavitation Protection: In liquid services where pressure drops can cause cavitation (the formation and implosion of vapor bubbles), Tungsten Carbide withstands the destructive micro-jets and shockwaves that would quickly damage softer metals.
Corrosion Resistance: While not universally corrosion-proof, certain grades of Tungsten Carbide offer excellent resistance to a wide range of corrosive chemicals.
High Pressure/Temperature Stability: It maintains its structural integrity and properties under extreme pressures and temperatures.