Stellite Valve Cages for API Sucker Rod Pumps
Material: stellite alloy (Brand:3,6,12,20,etc. upon the application )
Process: powder metallurgy / precision casting 
Density: 8.4g/cm3
Hardness: 37-55HRC 
Dimensions: upon customer's need
Nominal composition (mass%) and physical properties
| 
Co | 
Cr | 
W | 
C | 
Others | 
Hardness | 
Density | 
Melting range | 
| 
Base | 
27-31 | 
3.5-5.5 | 
0.9-1.4 | 
Ni, Fe, Si, Mn, Mo | 
38-44HRC | 
8.35g/cm³ | 
1280-1410ºC | 

 
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