Ngokuvamile, insimbi engagqwali ye-austenitic ayinawo uzibuthe. Kodwa i-martensite ne-ferrite ine-magnetism. Nokho, i-austenitic ingase ibe kazibuthe. Izizathu zimi kanje:

Lapho iqina, ingxenye kazibuthe ingase ihambe ngenxa yesizathu esithile sokuncibilika; thatha 3-4 ngokwesibonelo, 3 ukuze 8% residual kuyinto evamile, ngakho austenite kufanele kube okungezona uzibuthe noma uzibuthe buthaka.

Insimbi engagqwali ye-Austenitic ayiwona uzibuthe, kodwa uma ingxenye engu-γ ikhiqiza esigabeni se-martensite, uzibuthe uzokhiqiza ngemva kokuqina okubandayo. Ukwelashwa kokushisa kungasetshenziswa ukuqeda lesi sakhiwo se-martensite nokubuyisela okungeyona i-magnetism yayo.