Story of Alloys in Steel

[Music] this age of speed demands toughness and resilience in our Swift instruments of civilization think of the shocks and strains developed in the highspeed high compression engines that drive our motor cars and Motorcraft where is the metal strong enough to resist the pressures and strains in delicate parts and tough enough to withand the shattering effects of impact and shock the answer is alloy steel our modern airplanes demanding the utmost from motor frame and wings place their Reliance in this light strong and tough metal and the railroads of the country use alloys steel where ordinary metal will not give that extra toughness and [Music] ductility in the laboratory as well as in actual practice continued efforts are being made to improve the quality and broaden the use of these new Metals here we will witness a severe test for toughness with strength into this machine is placed a rod of alloy steel Twisted into a loose knot with the ends of the rod tightly held in the jaws of this powerful machine tension is gradually applied and the north is drawn Tighter and Tighter No Ordinary steel could stand such a test as this not a sign of cracking just think what such steel as this means to Industry the terrific tension increases still no indication of distress the knot goes small and smaller but does not break thanks to tough strong alloy Steel [Music] root Force meets its match in the toughness of alloy [Music] steeld [Music] [Music] it's duct P good forth can bend it the BL force can break it [Music] too it's strong Brute Force cannot pull it apart but it's brittle it [Music] breaks it's ductal and it's strong too [Music] root Force has met its master in the top of the alloy steel no metal of equal strength can compare with alloy steel for toughness and resistance to shocks and [Music] string when we realize that rusts and corrosion cause an annual loss in America alone of hundreds of millions of dollars we can appreciate the economic value of stainless steel rate of effect resists the ravages of soot grit and moisture and gives a radiant Beauty to the world famous structure Singler steel combines utility with Beauty in Banks hotels and public buildings and lends a new dignity to architectural interior in kitchens cafeterias and a host of other places where food is handled stainless steel serves ideally for tabletops cabinets and utensils every housewife knows how easily ordinary Steel knives become TS here we see a carbon steel and a stainless steel blade trusted into a lemon let us leave them there while we witness a far more severe test these two blades are being subjected to the action of a powerful a until recently no steel was known that was not subject to the action of this concentrated corrosion while these blades are being put to this test we will see how the blades in the lemon are getting along observe how quickly the lemon juice has Stained the carbon steel blade but the stainless seel stays Bright and Shine now for the acid test to get well that completely ruined the ordinary steel blad but the stainless seal doesn't show a mark certainly It is Well [Music] [Music] [Music] named [Music] [Music] [Music] acid heat rusts and wear destroy the resistance of carbon steel