Ultra-light alloys and their utilization on aircraft
A 1924 technical report on ultra-light magnesium alloys for aircraft, issued through the NASA Technical Reports Server, presenting engineering data in graphs and phase diagrams rather than illustrations for a general readership. Its three pictures are line charts plotting per cent elongation and tensile strength against alloying content for aluminium, zinc, cadmium and copper additions, plus a triangular ternary diagram of magnesium, aluminium and zinc with hardness contours; a designer might borrow their clean grid, sparse labelled curves and restrained hand-lettered annotation style.
