Magnet-ka joogtada ah ee ugu awoodda badan, wuxuu bixiyaa soo-celin weyn oo loogu talagalay qiimaha & waxqabadka, waxay leeyihiin goobta ugu sarreysa / xoogga dusha sare (Br), sare
Qasab (Hc), si fudud ayaa loo samayn karaa qaabab kala duwan iyo cabbirro kala duwan. Ku firfircoon qoyaan iyo ogsijiin, oo sida caadiga ah lagu bixiyo dhejinta (Nickel, Zinc, Passivation, Epoxycoating, iwm.).