Kune zviuru zvealloy simbi mamakisi uye makumi ezviuru zvezvirevo zvinoshandiswa pasi rese. Kubuda kwesimbi yealloy kunokwana 10% yehuwandu hwesimbi inobuda. Chinhu chakakosha chesimbi chinoshandiswa zvakanyanya mukuvaka hupfumi hwenyika uye kuvaka kwekudzivirira kwenyika.
Kubva kuma1970, kuvandudzwa kwealloysimbi dzakasimbamunyika yose yapinda munguva itsva. Kubva pane inodzorwa inotenderedza tekinoroji uye microalloying simbi, yemazuva ano yakaderera-alloy high-simba simbi, kureva microalloyed simbi, vaumba pfungwa itsva.
Mumakore ekuma1980, kuvandudzwa kwezvakasiyana-siyana zvinosanganisira nzvimbo dzakasiyana-siyana dzemaindasitiri uye chikamu chezvigadzirwa zvakakosha zvakasvika pakakwirira nerubatsiro rwekubudirira mune metallurgical process technology. yesimbi, iyo inotonga chinzvimbo chesimbi chimiro uye micro-fine chimiro inoratidzirwa kekutanga. Inoratidzawo kuti tsvakurudzo yekutanga yesimbi yakaderera-alloy yakave yakakura uye isati yamboitika.Iyo pfungwa itsva yealloy design.