Zund blade Z31 yakagadzirwa neyekupedzisira-yakanaka tungsten simbi poda. Tungsten simbi (yakaoma alloy) ine nhevedzano yezvakanakisa zvivakwa senge kuomarara kwakanyanya, kupfeka kuramba, kusimba uye kusimba, kusapisa kupisa uye kushomeka kwekudzivirira, kunyanya kuoma kwayo kwakanyanya uye kusapfeka. Carbide inoshandiswa zvakanyanya semidziyo, senge maturusi ekuchinjisa, milling cutters, mapurani, madhiri, maturusi anofinha, nezvimwewo, Kumhanya kwekucheka kwemacarbides matsva esimende ikozvino kwakapetwa mazana eiyo kabhoni simbi.