I-silicon yensimbi, eyaziwa nangokuthi i-crystalline silicon noma i-silicon yezimboni, isetshenziswa kakhulu njengesengezo kuma-alloys angewona ayoni.I-silicon yensimbi ingumkhiqizo oncibilikisiwe kusuka ku-quartz ne-coke esithandweni sikagesi.Ingxenye eyinhloko yokuqukethwe kwe-silicon cishe i-98% (eminyakeni yakamuva, i-99.99% yokuqukethwe kwe-Si iphinde ifakwe ku-silicon yensimbi), futhi ukungcola okusele kuyinsimbi ne-aluminium.i-calcium, njll.