Kauv steel yeeb nkab txias drawn, kub dov tube tsis xws luag, xws li cov kab nrib pleb los yog kauv steel high-precision txias drawn yeeb nkab tom qab lub tank, nyob rau hauv lub chav kawm ntawm cov pob txha, yuav luag tsis muaj yas deformation tshwm sim, nws yog nkig puas. Cov pob txha tawg yog tshwm sim los ntawm ntau yam laj thawj. Xws li: cov nag lossis daus ntawm cov ciam teb, tsis hais lawv qhov kev siv zog ntau dua lossis tsis muaj zog dua li lub zog matrix, txhua yam ua rau tawg. Kev suav nrog ntawm kev sib cais ntawm cov qoob loo yog qhov ua rau muaj teeb meem. Tsis tas li ntawd, txawm nyob deb li deb ntawm qhov kev txwv tsis pub dhau ntawm kev hloov pauv, tuaj yeem ua rau qaug zog tawg.

Cov pob txha tawg ntawm kev ntxhov siab tsis tshua muaj zog hlau cov ntaub ntawv tshwm sim thaum lub koom haum nyob deb ntawm homogeneous, cov khoom isotropic. Lub koom haum yuav muaj cov kab nrib pleb, yuav muaj xws li inclusions, porosity defects, cov teeb meem no tuaj yeem pom hauv cov khoom ntawm microcracks. Tsis tas li ntawd, qhov brittle fracture ntsig txog qhov kub thiab txias siv. Cov tib neeg los ntawm kev tshawb fawb pom tau tias thaum qhov kub thiab txias poob qis dua qhov kub thiab txias, cov khoom yuav hloov mus rau hauv nkig, txo nws qhov cuam tshuam kev nqus dej, qhov tshwm sim hu ua brittle.