Cov cuab yeej cuab tam ntawm cov nplooj ntawv tooj liab hais txog yuav ua li cas cov khoom teb rau lub zog ua rau nws. Cov khoom no yog ntsuas los ntawm kev ntsuas tus qauv xws li tensile test, compression test thiab dabtsi yog khoov. Cov kev ntsuam xyuas no ntsuas cov khoom tiv thaiv deformation, tiv thaiv kev tawg, thiab elasticity ntawm cov khoom.
Kev tiv thaiv kab mob yog qhov ntsuas ntawm ntau npaum li cas daim ntawv tooj liab deforms nyob rau hauv ib qho kev thauj khoom tshwj xeeb. Lub zog tawg yog qhov ntsuas qhov siab tshaj plaws uas cov ntawv tooj liab tuaj yeem tiv taus ua ntej tawg. Elasticity yog hais txog cov khoom muaj peev xwm rov qab tau nws cov duab qub tom qab raug rau lub nra.
Cov nplooj ntawv tooj liab muaj cov khoom siv zoo heev vim lawv cov qauv crystalline thiab siab ceev. Tooj liab yog cov khoom siv ntom ntom, txhais tau tias muaj ntau cov atoms hauv cov khoom me me. Qhov no ua rau cov nplooj ntawv tooj liab muaj zog thiab tiv taus deformation.
Tsis tas li ntawd, tooj liab yog cov khoom siv ductile, txhais tau tias nws tuaj yeem ncab thiab zoo li tsis tawg. Qhov no ua rau cov ntawv tooj liab yooj yim ua haujlwm nrog thiab pwm rau hauv cov duab sib txawv thiab ntau thiab tsawg. Tooj liab kuj yog cov khoom siv tau yooj yim, txhais tau tias nws tuaj yeem khoov thiab zoo li yam tsis muaj kev tawg. Qhov no ua rau cov ntawv tooj liab zoo tagnrho rau kev siv hauv cov ntawv thov uas yuav tsum muaj cov duab tshwj xeeb, xws li hauv kev tsim cov khoom siv hluav taws xob.
Cov nplooj ntawv tooj liab kuj tseem muaj kev tiv thaiv corrosion, txhais tau tias lawv tuaj yeem tswj hwm lawv cov qauv kev ntseeg tau ntev. Qhov no ua rau lawv zoo tagnrho rau kev siv hauv cov ntawv thov uas yuav tsum tau muaj kev tiv thaiv oxidation, xws li hauv kev tsim cov tank cia rau cov kua corrosive.
Hauv kev xaus, cov ntawv tooj liab muaj cov khoom siv zoo heev vim lawv cov qauv crystalline thiab siab ceev. Copper yog cov khoom muaj zog, ductile thiab malleable, ua rau nws zoo tagnrho rau siv nyob rau hauv cov ntaub ntawv uas yuav tsum tau tiv thaiv deformation thiab forming. Lub corrosion kuj ntawm tooj liab ua rau nws zoo tagnrho rau siv nyob rau hauv daim ntawv thov qhov twg oxidation kuj yuav tsum tau. Cov nplooj ntawv tooj liab tau siv dav hauv kev lag luam rau ntau yam kev siv, xws li kev tsim khoom ntawm cov khoom siv hluav taws xob, cov tso tsheb hlau luam, thiab hauv kev tsim cov txheej txheem muaj zog.
