1. Cov txheej txheem tsim khoom siab tshaj: siv cov txheej txheem dov siab heev thiab vuam tshuab los xyuas kom meej qhov zoo thiab kev ua haujlwm ntawm cov yeeb nkab steel.
2. Cov qauv tshwj xeeb: qhov saum npoo qhia pom pom tseeb muab kauv zoo, uas ua rau muaj zog thiab ruaj khov ntawm cov yeeb nkab steel.
3. Lub zog siab: nrog lub zog siab compressive thiab lub peev xwm thauj khoom, nws tuaj yeem ua tau raws li qhov yuav tsum tau siv hauv ntau qhov chaw ua haujlwm.
4. Zoo toughness: nrog zoo cuam tshuam tsis kam thiab khoov tsis kam, nws muaj peev xwm tiv taus siab dua thiab cuam tshuam.
5. Kev siv ntau yam: tsim nyog rau kev tsim kho, kev txuag dej, hluav taws xob, kev thauj mus los thiab lwm yam kev lag luam, muab kev txhawb nqa zoo rau kev tsim kho vaj tse.
