When Should You Use Ni60 on the Ball and Ni55 on the Seat | A Practical Guide for Metal Seated Ball Valves
Under high temperature (≥450℃) or strong wash working conditions, sphere choose Ni60 (hardness about HRC58-62), valve seat choose Ni55 (HRC52-56) can form hard-tough pair. Suggest spray coating thickness 0.3-0.5mm, grind to Ra≤0.4μm, guarantee sealing wear-resistant and anti-biting performance. hardness matching Prevent bite dead phenomenon In 10 inch Class 600 metal ball valve inside, pipeline pressure […]
Is Stellite Better Than Tungsten Carbide for High-Temperature Ball Valves | Material Selection for Severe Service
Stellite in high-temperature ball valves usually is better: its melting point is about 1285–1410°C, corrosion resistance is close to stainless steel, and impact resistance and cavitation resistance ability are strong; While tungsten carbide hardness is higher (about 1400HV, Mohs 8.5–9), wear resistance is excellent but easy to brittle crack, under high temperature may decompose. Engineering […]
