Aluminium Alloys
For the Schwarz airship Berg used an alloy of unknown composition named Viktoria aluminium. For the Zeppelin LZ 1, Zeppelin's first design, he used pure aluminium. For Zeppelin LZ 2 to LZ 25 Berg used aluminium alloyed with zinc and zinc-copper. Berg also produced duralumin - invented by Alfred Wilm - an alloy with copper, manganese and magnesium. Zeppelin immediately wished to use this superior alloy but it had technical difficulties not satisfactorily resolved until 1915 when it was used in LZ 26.
Read more about this topic: Carl Berg (airship Builder)