. The Iron and steel magazine. Fig. 26. Cu, 60%; Zn, 34%, Al, 6%.Magnified 50 t < iff .? <* I J. Fig. 27. Cu,6o%; Zn,33%; Al,7%.Magnified 50 diam. istic of forgeable brasses are no longer found, being replaced bypolyhedric grains similar to those present in brass containingless than 55 per cent copper. With 5 per cent aluminum poly- 126 The Iron and Steel Magazine hedric grains are found containing small crystals similar to thosediscovered b}- Charpy in brass with aboutj50 per cent 7 per cent aluminum the grains are surrounded by a number

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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectiron, bookyear1898