Ukukhubazeka kocingo oluqhelekileyo ngenxa yokuthamba kwayo xa kusebenza, kwaye ubude bayo becala buba buthambileyo, obuchaphazela ukuchaneka kunye nesantya senkqubo yokusika.Intsimbi ye-iron-chromium-aluminiyam ilukhuni, kodwa i-brittle kwaye kulula ukuphuka.Ucingo lwangaphambili lwaseJamani aluyi kuba luthambile, aluyi kutshintsha kwiqondo lokushisa eliphezulu, kwaye lomelele.Yeyona cingo lokusika elishushu.
Ucingo lokusika olungeniswe eJamani lunokumelana ne-oxidation yomhlaba kunye namandla aphezulu obushushu.Amandla aphezulu obunzima bocingo oluqhelekileyo lokusika lwasekhaya yi-780, kwaye ucingo lokusika olungeniswa kumazwe angaphandle lunokufikelela kwi-1800, enomsebenzi omhle wokucubungula.Isiphumo esihle kakhulu sokusika sinokufezekiswa ngokulungelelanisa ubushushu kunye nesantya sokusika, kwaye uhlobo kunye nobuninzi bezinto eziphathekayo kuya kuchaphazela isantya sokusika.