Word: alloy
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Dates: during 1940-1949
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Chief industrial use for silver is the silver brazing alloy, which brings about an almost instantaneous "wedding" of separate metal parts. The alloy has a melting point between 1,175 and 1,300 degrees F., avoiding the injury to metals which sometimes results from the 1,600-degree heat required for base-metal alloys...
...maneuverability, especially on quickly built temporary landing fields. The Army explains that it is not yet ready for wooden combat planes, is meanwhile ordering more & more wooden primary trainers, has available a design for an advanced trainer in which priority precious metals may be replaced by wood and low-alloy steel...
...After years of experiment, ingenious North American Aviation has found a low-carbon, low-alloy steel suited for airplane wings, stabilizers, rudders, elevators, flaps and ailerons. Combined with a plywood fuselage, it makes a top-notch combat trainer, weighing only 3% (150 lb.) more than an aluminum ship. The aluminum saved on 1,000 steel-plywood jobs would make 420 sleek pursuit ships...
...Magnetic forces keep the molten metal stirring about, so that the several components of an alloy remain well mixed...
...High-alloy steel for tanks was scarce in 1941. But the end of passenger-car production releases 600-650,000 tons of such steels, nearly 50% of 1940 output...