Lub 2000 series yog txhuas tooj liab alloy, sawv cev rau 2A16 (LY16) thiab 2A06 (LY6), nws yog yus muaj los ntawm siab hardness, uas cov ntsiab lus tseem ceeb ntawm tooj liab yog siab tshaj, txog 3-5%.2000 series txhuas ntawv yog cov ntaub ntawv aviation txhuas, uas tsis yog siv ntau hauv cov khoom lag luam.