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Kubva kuhondo yechipiri yenyika kusvika kuma1960s,Alloy Simbi Kukanganwirwadzaive kunyanya nguva yekuvandudzwa kweiyo yakakwira-simba simbi uye Ultra-yakakwira-simba simbi. Nekuda kwezvido zveindashandirwi yedanho rekushandisa uye nekuvandudzwa kweTekinoroji yeRoctolication, yakanyanya kuwanda-simba Simbi. kutorwa. Alloy Simbi yakatanga kukudziridza munzira yekuchena kwakanyanya, yakakwirira chaiyo uye Ultra-yakaderera kabhoni. Maraging Simbi uye Ultra-yakachena Ferrite yakaonekwa zvakare.New Stor Steel Grades yakadai sesimbi isina tsvina.