Standard test specimens of zinc bronze (Cu88, Sn10, Zn2)--Parts I and II . g,^ ^^.v>t^-iiZv^ y4, Specimen 19; 5X. Remelted and allowed to coolin the furnace. The difference in orientation of thedendritic structure marks out the various crystals. B, Specimen 19; 100X. The dark portions are thecores rich in copper; the light angular spots, thehard brittle eutectoid inclusions

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