Alfred Wilm
Alfred Wilm (25 June 1869 – 6 August 1937) was a German metallurgist who invented the alloy Al-(3.5%-5.5%)Cu-Mg-Mn, now known as Duralumin which is used extensively in aircraft. == Research Work == Whilst working in private military-industrial laboratory Zentralstelle für wissenschaftlich-technische Untersuchungen (Center for Scientific-Technical Research) in Neubabelsberg in 1901, Wilm discovered age hardening, in particular age hardening of aluminium alloys.