1. Ukwelashwa kokushisa kuyisici esibucayi nesiyinkimbinkimbi ekwenzeni amagiya, okuthinta kakhulu ukusebenza kwegiya ngalinye ekudluliseni amandla noma ukunyakaza kwezinye izingxenye ekuhlanganiseni.Ukwelashwa kokushisa kuthuthukisa ukusebenza futhi kunwebe impilo yamagiya asensimini ngokushintsha izakhiwo zawo zamakhemikhali, ezensimbi nezomzimba.Lezi zakhiwo zinqunywa ngokucabangela ijometri yegiya, izidingo zokudlulisa amandla, izingcindezi ezindaweni ezihlukahlukene ngaphakathi kwegiya elingaphansi komthwalo, amanani omjikelezo wemisebenzi, izinhlobo zezinto ezibonakalayo, ukwakheka kwengxenye yokukhwelana nezinye izimo zokusebenza.

2. Ukwelashwa kokushisa kuthuthukisa izici zomzimba, njengokuqina kobuso, okunikeza ukumelana nokugqoka ukuvimbela ukuguga okulula ezinyoni nasezindaweni zokuzala;ukwelashwa kokushisa nakho kuthuthukisa impilo yokukhathala kwegiya ngokudala ingcindezi ecindezelayo engaphansi komhlaba ukuze kuvinjelwe ukuthintana okuphezulu emazinyweni egiya I-stress-indued pitting and deformation.Lezi zingcindezi ezifanayo ezicindezelayo zivimbela ukwehluleka kokukhathala empandeni yegiya ngenxa yokugoba umjikelezo.

3. Izinto ezibonakalayo ezifana nokuqina kwendawo, ukuqina komgogodla, ukujula kwendawo, i-ductility, amandla, ukumelana nokugqoka kanye nokusabalalisa ukucindezeleka kokucindezeleka kungahluka kakhulu kuye ngokuthi uhlobo lokwelashwa okushisa olusetshenzisiwe.Kunoma yiluphi uhlobo olunikeziwe lokwelapha ukushisa, imiphumela ingalungiswa ukuze ihlangabezane nezidingo ezithile zohlelo lokusebenza ngokushintsha amapharamitha wenqubo afana nomthombo wokushisa, izinga lokushisa, isikhathi somjikelezo, umkhathi, i-quench medium, kanye nemijikelezo yokufudumala.