Corrosion resistant cemented carbide for fluid handling

Abstract

A cemented carbide for fluid handling components or a seal ring has a composition in wt %; about 7-11 Ni; about 0.5-2.5 Cr 3 C 2 ; and about 0.5-1 Mo; and a balance of WC, with an average WC grain size greater than or equal to 4 μm.

1 . A cemented carbide for a fluid handling component or seal ring, the cemented carbide having a composition comprising in wt % (weight %):
 a balance of WC;   about 7-11 Ni;   about 0.5-2.5 Cr 3 C 2 ; and   about 0.5-2.5 Mo,   wherein the composition has an average WC grain size greater than or equal to 4 μm.   
     
     
         2 . The cemented carbide of  claim 1 , wherein the composition further comprises of from about 0.3 to about 1.5 wt % Nb. 
     
     
         3 . The cemented carbide according to  claim 1 , wherein the composition comprises from about 8.0 to about 10.1wt % Ni. 
     
     
         4 . The cemented carbide according to  claim 3 , wherein the composition comprises of from about 8.0 to about 9.0 wt % Ni. 
     
     
         5 . The cemented carbide according to  claim 3 , wherein the composition comprises of from about 9.1 to about 10.1 wt % Ni. 
     
     
         6 . The cemented carbide according to  claim 1 , wherein the composition comprises from about 0.7 to about 1.0wt % Cr 3 C 2 . 
     
     
         7 . The cemented carbide according to  claim 6 , wherein the composition comprises from about 0.7 to about 0.9 wt % Cr 3 C 2 . 
     
     
         8 . The cemented carbide according to  claim 6 , wherein the composition comprises from about 0.8 to about 1.0 wt % Cr 3 C 2 . 
     
     
         9 . The cemented carbide according to  claim 1 , wherein the composition comprises from about 0.7 to about 1.0wt % Mo. 
     
     
         10 . The cemented carbide according to  claim 9 , wherein the composition comprises from about 0.7 to about 0.9 wt % Mo. 
     
     
         11 . The cemented carbide according to  claim 9 , wherein the composition comprises from about 0.8 to about 1.0 wt % Mo. 
     
     
         12 . The cemented carbide according to  claim 1 , wherein the composition comprises of from about 87.9 to about 90.6 wt % WC. 
     
     
         13 . The cemented carbide of  claim 12 , wherein the composition comprises of from about 87.9 to about 89.1 wt % WC 
     
     
         14 . The cemented carbide of  claim 12 , wherein the composition comprises of from about 89.4 to about 90.6 wt % WC 
     
     
         15 . The cemented carbide according to  claim 1 , wherein the composition has a density of about 14.3 to about 14.7 g/cm 3 . 
     
     
         16 . The cemented carbide according to  claim 1 , wherein the composition has an average grain size of greater than or equal to about 4 to about 10 μm.