Feem ntau, cov hlau tsis xeb austenitic tsis muaj magnetism. Tab sis cov martensite thiab ferrite muaj magnetism. Txawm li cas los xij, cov austenitic kuj tseem yuav magnetic. Cov laj thawj yog raws li nram no:

Thaum khov kho, ib feem ntawm qhov sib nqus yuav tawm mus vim qee qhov laj thawj smelting; piv txwv li, 3-4% seem yog qhov tshwm sim ib txwm muaj, yog li austenite yuav tsum koom nrog cov tsis muaj hlau nplaum lossis cov hlau nplaum tsis muaj zog.

Cov hlau tsis xeb Austenitic tsis yog hlau nplaum, tab sis thaum ib feem γ theem tsim mus rau hauv theem martensite, magnetism yuav tsim tom qab txias hardening. Kev kho cua sov tuaj yeem siv los tshem tawm cov qauv martensite no thiab rov qab nws cov tsis yog hlau nplaum.