Report of the United States Board Appointed to Test Iron, Steel and Other Metals: In Two Volumes, Volume 1U.S. Government Printing Office, 1881 - Government publications |
Other editions - View all
Common terms and phrases
acid alliages Alloy.-Original mixture alloys of copper annealing antimony Autographic Strain Diagrams B.-Material beaker bismuth blow-holes brittle broke bronze cast cent chain-iron chemical color composition compression containing cooling COPPER AND TIN crystals curve decrease deflection density determined Dingler's Journal ductility elastic limit elongation experiments filter foot-pounds fractured section gray fiber H Cl heat increase length limit of elasticity liquation luster maximum MECHANICAL LABORATORY melted metals minutes Modulus of elasticity Modulus of rupture observed Original mark Original Mixture oxide piece Plate pounds per square precipitate RECORD OF TESTS rolled showed Sn.-Analysis Sn.-Dimensions specific gravity specific heat specimen square inch steel STEVENS INSTITUTE studded surface TABLE tam-tams temperature tempering Tenacity per square tensile limit tensile strength tensile stress tension Test number test-pieces TESTS BY TENSILE TESTS BY TRANSVERSE Thro tin).-Color tion torsional transverse stress wash weight welding wrought iron zinc
Popular passages
Page 499 - Experiments and Observations on the various Alloys, on the specific Gravity, and on the comparative Wear of Gold.
Page 114 - These experiments confirmed the opinion already formed, and indicate that a bridge, cable, or other structure composed of iron of either of the latter two varieties, will receive comparatively slight benefit from the operation of this law ; while ductile, fibrous metal, which possesses greater inherent power to resist sudden strains than does the iron of a coarser nature, although the latter may be better able to resist steady stress, gains in this latter power to a greater extent by the effect of...
Page 373 - Mallet as 0. The relative ductility given in the table of the alloys experimented on by the US Board is the proportionate extension of the exterior fibres of the pieces tested by torsion as determined by the autograph strain diagrams.
Page 489 - Weidemann and Franz remarked that whatever the quality may be upon which calorific conduction depends, the close agreement of the figures renders it exceedingly probable that the same quality influences in a similar manner the transmission of electricity; for the divergence of the numbers expressing the conductivity for heat from those expressing the conductivity for electricity are not greater than the divergences of the latter alone, exhibited by the results of different observers. The most extensive...
Page 236 - ... used in the furnace, and from many causes under the puddler's control, and dependent on his knowledge and skill. Such variations would be entirely inadmissible in the most common grades of steel : in fact, they could not occur in the cheap steel processes, when using a uniform pig-iron, except by a special effort.
Page 329 - The results of these tests do not seem to corroborate the theory given by some writers, that peculiar properties are possessed by the alloys which are compounded of simple multiples of their atomic weights or chemical equivalents, and that these properties are lost as the compositions vary more or less from this definite constitution. It does appear that a certain percentage composition gives a maximum strength and another certain percentage a minimum, but neither of these compositions is represented...
Page 483 - C. This temperature, therefore, corresponds to the lowest melting point that can be exhibited by an alloy of tin and lead, a larger proportion of either metal causing the melting point to rise. With the exception of the alloys of tin and lead, and the fusible alloys, the fusing points of but few of the alloys' have been determined. An accurate pyrometer for temperatures above red heat is needed for this purpose. The
Page 234 - ... mentioned, let us observe : — 1st, All the irons were so very low in sulphur, that this ingredient could not have materially affected welding power. 2d, As we shall see in detail, farther on, the irregular differences in the working and reduction of the bars, which affected all other physical properties, affected this one also. Let us first take the singularly impure iron M. Its surfaces were pretty well united by welding, but the iron about the • weld was weakened, especially at a high heat....