Ib yam li lwm cov ntaub ntawv, cov khoom siv lub cev ntawm cov hlau tsis xeb feem ntau suav nrog peb yam hauv qab no: cov khoom thermodynamic xws li melting point, lub peev xwm kub tshwj xeeb, thermal conductivity thiab linear expansion coefficient, electromagnetic khoom xws li resistivity, conductivity thiab permeability, thiab cov khoom siv kho tshuab xws li Young's elastic modulus thiab stiffness coefficient. Cov khoom no feem ntau suav hais tias yog cov yam ntxwv ntawm cov hlau tsis xeb, tab sis lawv kuj raug cuam tshuam los ntawm qhov kub thiab txias, machining degree thiab magnetic field zog.

1) Zoo heev ntawm qhov chaw thiab qhov ci ntsa iab;

2) Muaj zog tiv thaiv corrosion, siab tensile zog thiab qaug zog tsis kam;

3) Cov tshuaj lom neeg ruaj khov, hlau ntshiab thiab cov ntsiab lus tsawg.