Aluminium hlau tau siv los ua cov khoom siv hluav taws xob rau lub sijhawm ntev, tshwj xeeb tshaj yog los ntawm cov khoom siv hluav taws xob uas muaj feem xyuam rau cov kab xa hluav taws xob hauv kev siv tsis ntev tom qab pib lub tshuab hluav taws xob niaj hnub no tau tsim los pib thaum xyoo 1880s. Thaum xyoo 1960s thaum muaj kev tsim vaj tsev nyob hauv North America thiab tus nqi ntawm tooj liab spiked, aluminiumbuilding hlau yog tsim los siv qib AA-1350 aluminium alloy nyob rau hauv qhov ntau thiab tsawg txaus siv rau qis load ceg circuits hauv tsev. . Aluminium hlau yuav tsum muaj lub ntsuas hlau loj dua li tooj liab kom nqa tib lub thauj khoom lossis tam sim no, tab sis tseem tsis tshua kim dua tooj liab hlau rau ib qho chaw hauv Circuit Court.
Thaum xyoo 1960s teeb meem thiab kev ua tsis tiav uas cuam tshuam txog kev sib txuas ntawm ceg txuas rau lub tsev tshiab hlau ua nrog cov nqi hluav taws xob qib AA-1350 alloy aluminium pib nto, ua rau rov ntsuam xyuas kev siv cov hlau ntawd rau lub tsev hlau thiab ib qho kev qhia txog qhov xav tau ntawm cov hlau nplaum tshiab los tsim cov hlau hauv tsev aluminium. Thawj 8000 series hluav taws xob conductor alloy, tseem siv dav hauv qee qhov kev siv, tau tsim thiab patented hauv 1972 los ntawm Aluminium Company of America (ALCOA). Cov hlau no, nrog rau AA-8030 (patented los ntawm Olin hauv 1973) thiab AA-8176 (patented los ntawm Southwire nyob rau hauv 1975 thiab 1980) ua mechanically zoo li tooj liab.
Tsis zoo li cov laus AA-1350 alloy yav dhau los siv, cov AA-8000 series alloys tseem khaws lawv lub zog tensile tom qab tus qauv ntsuas tam sim no lossis Kev Ntsuas Tam sim no Cycle Submersion Test (CCST), raws li tau piav qhia hauv ANSI C119.4 Xyoo: 2004. Nyob ntawm qib annealing, AA-8176 yuav elongate mus txog 30% nrog cov nyhuv springback tsawg dua thiab muaj lub zog tawm los ntau dua (19.8 KSI rau AA txias ua haujlwm -8076
Ib lub tsev uas muaj txhuas thaiv thaiv ua ntej nruab nrab -1970s (raws li cov Tshuag ntawm pre-1972 txhuas hlau raug tso cai siv tau) tej zaum muaj hlau ua nrog cov laus AA-1350 alloy uas tau tsim los rau kev xa hluav taws xob. Lub AA-1350 aluminium alloy muaj qhov cuam tshuam ntau dua rau cov teeb meem cuam tshuam nrog cov ceg txuas hluav taws xob hauv tsev vim yog cov khoom siv kho tshuab uas ua rau muaj kev cuam tshuam ntau dua los ntawm cov khoom siv hluav taws xob siv thaum lub sijhawm ua ke nrog kev ua haujlwm tsis zoo.
