Report of the Tests of Metals and Other Materials Made at the United States Testing Laboratory at Watertown Arsenal, Massachusetts, During the Fiscal Year Ended ...
U.S. Government Printing Office, 1917 - Building materials
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14-inch gun 500 diameters annealing Appearance of fracture Applied loads arsenal austenite brass Brinell hardness bushing carbon content casting chain Charpy tests chemical analysis chromium CONCLUSIONS Concrete building block contraction of area crack defective springs determine Diameter at fracture edge elastic limit end of splice fracture equals free ferrite furnace cooling gauge length grains heat treatment inch equals inch sections inches from end initial load inner circumference Inside contraction interior investigation marked martensite material metal micro microstructure nickel steel occurring oil quenching pearlite phosphorus Photograph physical tests piston rod polished polyhedral structure portion pounds per square projectile proportional limit quenched in oil quenching temperature ring sample Scleroscope sear spring Sectional area segregation shown in micrograph shows the structure side sorbite specimen square inch Stead's reagent strand strength pounds struc surface tensile strength tensile tests threads triangular structure triangulation troostite ture WATERTOWN ARSENAL yield point
Page 6 - inches from end of socket. 5 strands at middle of length. 3 strands
Page 6 - strands 12 inches from end of socket. 5 strands at middle of length.
Page 6 - strands at middle of length. 3 strands 30 inches from end of socket.
Page 3232 - Appearance of fracture, fine granular 50 per cent, dull silky 50 per cent.
Page 3329 - Brinell hardness perpendicular to and in the direction of forging or rolling.
Page 3329 - Brinell hardness perpendicular to and in the direction of forging or rolling..
Page 3279 - No attempt has been made to draw any conclusions from the data