They are the following advantages;
1.  As the Carbides (WC-Ni) are non-magnetic; there is no iron dust on their parts.
2.  The Carbides are very hard (HRA90), there is not happened the scratch on the their     parts and they are excellent lusture.
3.  As the Carbides are anti-corrisim against the sweet, they do not damaged.
4,  The Carbides no pore on the lapped surfaces.Table. Carbides Crade