4000 Urukurikirane rufite ibikubiye muri silicon hagati ya 4.5% na 6%, nibiri hejuru ya silicon, ni imbaraga. Ingingo yacyo irake, kandi ifite ubushyuhe bwiza no kwambara. Irakoreshwa cyane mubikoresho byubaka, ibice bya mashini, nibindi

5000 Urukurikirane, hamwe na magnesium nkikintu cyingenzi, nacyo gishobora koherezwa nka magnesium aluminum alloy. Mubisanzwe bigaragara mu nganda, ifite ubucucike buke, imbaraga zikaze zikaze, kandi zirashaje.

6000 Urukurikirane, hamwe na magnesium na silikoni nkibintu bikuru, bibanda kubiranga urukurikirane enu na gatanu, bikwiranye na scenarios hamwe na okiside nyinshi.

7000 Urukurikirane, rurimo ibintu bya Zinc, nabyo ni ibya bikoresho bya aluminimu, birashobora kuvumbwa, ni ibya Superhard Aluminum, kandi bifite imbaraga nziza.

8000 Urukurikirane, nicyo gisobanuro cya sisitemu usibye ibyavuzwe haruguru, ari urukurikirane kandi rukoreshwa cyane kumusaruro wa aluminiyumu.