Publisher's Synopsis
Excerpt from Magnetic Susceptibility and Iron Content of Cast Red Brass
The metal was cast horizontally into bars, cm (15 inches) long and cm (three-fourths inch) in diameter by the Ohio Brass Co. The procedure followed was to melt the electrolytic copper in a crucible then add the tin and zinc. When this metal was ready to pour the non was introduced as cast-iron turnings, average fineness _54. 3 mixed with ammonium chloride. Four bars from each alloy were cast in the same mold and from the same gate. One bar from each mold was then turned down to 1. 2 cm inch) in diameter and two specimens about 15 cm (6 inches) in. Length were cut from it.
A charge of between 50 and 100 pounds Of metal was used for each pouring and consisted of copper, 80. Zinc, 16. 2; and tin, 3 o per cent by weight. The excess zinc was added to take care of the usual small loss of this metal by volatilization. About 40 minutes' heating was required to melt the metal and get the alloy ready for pouring. At about 1 100° C. Chemical analysis showed that the following results Were Obtained.
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