Tsamba la nyundo la tungsten carbide lomwe limagwiritsidwa ntchito pophwanya matabwa limapangidwa ndi aloyi otsika 65 manganese ngati zinthu zoyambira, zolimba kwambiri komanso kuwotcherera kwa tungsten carbide ndi kulimbitsa kuwotcherera, zomwe zimapangitsa kuti ntchitoyo ikhale yabwinoko komanso yokwera.