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, kupisa kwekudzivirira uye kushomeka kwekushomeka, kunyanya kuoma kwayo kwakanyanya uye kusapfeka.Carbide inoshandiswa zvakanyanya semidziyo, senge maturusi ekuchinjisa, milling cutters, mapurani, madhiri, maturusi anofinha, nezvimwewo, Kumhanya kwekucheka kwecarbides mitsva inesimende ikozvino kwakapetwa mazana eiyo kabhoni simbi.