Amashanyarazi ya Semi-metallic (cyangwa bakunze kwita "metallic") feri irimo ibyuma biri hagati ya 30-70%, nkumuringa, icyuma, ibyuma cyangwa ibindi bikoresho byinshi kandi akenshi bishushanya amavuta ya grafite nibindi bikoresho biramba byuzuza kugirango bikore neza.
Feri ya Santa itanga feri yicyuma cya feri yubwoko bwose.Ubwiza bwibikoresho nubukorikori nicyiciro cya mbere.Feri yerekana feri ihuye neza na buri modoka yimodoka kugirango itange imikorere myiza ya feri.