Saky Karfe yana ba da sabis na maganin zafi kamar kashewa, kashewa da zafin rai, maganin warwarewa, da kawar da damuwa. Wadannan matakai inganta ƙarfi, taurin, ductility, da kuma lalata juriya na bakin karfe, gami karfe, da carbon karfe. Duk jiyya suna bin ƙa'idodin ƙasa da ƙasa tare da cikakken ingancin ganowa.
Quenching
Annealing
Haushi