Cov yeeb nkab steel tsis yog tsuas yog siv rau kev xa cov kua dej thiab cov hmoov av, sib pauv cov hluav taws xob hluav taws xob, tsim cov khoom siv kho tshuab thiab cov thawv ntim khoom, tab sis kuj yog kev lag luam hlau. Siv cov yeeb nkab steel los ua cov kab sib txuas hauv tsev, ncej thiab cov cuab yeej txhawb nqa tuaj yeem txo qhov hnyav, txuag hlau los ntawm 20 ~ 40%, thiab paub txog kev tsim kho thiab kev tsim kho tshuab.