TaC>99.5%, Nb<0.3%, Fe<0.1%, Si<0.01%, Ca<0.005%, Ti<0.01%, K<0.008%, Na<0.008%,
　　
　　
　　Al<0.015%, W<0.2%, Mo<0.1%, Co<0.1%, Cr<0.1%, Mn<0.05%, Sn<0.01%, O<0.20%, N<0.10%
　　
　　
　　C-tot>6.2%C-free1.0~3.0u

Appearance: black-brown powder

application :for cemented carbide products.

Packing:in iron drum with inner sealed double plastic bags