(Chithunzi chachinayi: 2a12 aluminium aloy)

Ngakhale masiku ano, mtundu wa 2a12 udakali wokondedwa wa anthorsece. Ili ndi mphamvu yayikulu komanso pulasitiki mu zonse ziwiri komanso zojambula zokalamba, zomwe zimapangitsa kuti zikhale zogwiritsidwa ntchito kwambiri pakupanga ndege. Itha kukonzedwa mu zinthu zomaliza-zomalizidwa, monga mbale zopyapyala, mbale zolimba, komanso mitengo yosiyanasiyana, mapangidwe ake, mapaipi, zowoneka bwino, ndi zina.

Kuyambira mu 1957, China yatulutsa bwino kwambiri kuti atulutsemo 2a12 aluminiyamu a aloy kupanga zigawo zazikulu zamitundu mitundu, monga mapiko amtengo wapatali, mafupa, ndi zina zotero. Amagwiritsidwanso ntchito popanga katundu wina wosanjidwa.

Ndi chitukuko cha makampani oyendetsa ndege, mankhwala a Haloy amawonjezekanso. Chifukwa chake, kuti tikwaniritse zosowa za mitundu yatsopano ya ndege, maliro ndi mapangidwe a boma lokalamba, komanso kuphatikiza ena mbale zopsinjika, zakonzedwa bwino ndikuyika.