Maxay yihiin walxaha kululaynta caadiga ah ee foornooyinka tijaabada ah ee heerkulka sare?

Walxaha kuleyliyaha ee foornooyinka tijaabada ah ee heerkulka sare waa kuwo caadi ah: silig caabbinta, usha carbide silicon, usha molybdenum silicon, graphite, suunka molybdenum, iwm.