Welding of Stainless Materials
A 1929 technical memorandum from the NASA Technical Reports Server, a research report on welding and corrosion in stainless steel alloys, written for engineers and metallurgists. Its pictures are grainy black-and-white photomicrographs of metal grain structure, cracks and corrosion, plus graphs of hardness against compression and photographs of test bars; a designer might take their dense, textured surfaces and grid-like charts as material for industrial backgrounds.
