4000 series feem ntau muaj cov ntsiab lus silicon ntawm 4.5% thiab 6%, thiab qhov siab dua cov ntsiab lus silicon, lub zog ntau dua. Nws cov ntsiab lus melting yog tsawg, thiab nws muaj qhov kub thiab txias tsis kam thiab hnav tsis kam. Nws yog tsuas yog siv nyob rau hauv lub tsev cov ntaub ntawv, mechanical qhov chaw, thiab lwm yam. 5000 series, nrog magnesiu ...
Nyeem ntxiv