Iyo silicon bhuronzi ine manganese uye nickel.Iine simba rakakwirira, rakanaka kwazvo kupfeka kusagadzikana, rinogona kusimbiswa nekurapa kwekupisa, uye simba rayo uye kuoma kwayo kunovandudzwa zvikuru mushure mekudzima uye kupisa.Iyo ine yakakwira corrosion kuramba mumhepo, mvura yakachena uye mvura yegungwa, uye ine yakanaka weldability uye machinability.