Excerpt from Electrical News, Vol. 27: January 1, 1918 The maximum tensile strength of hard drawn copper wires as ordinarily used for transmission work is lbs. Per square inch. Whilst that of aluminium in the pure state is about lbs. When alloyed with a small percentage of copper or nickel the tenacity of aluminium can be in creased by fifty per cent, and this has seemed to represent a more satisfactory solution of the problem of stringing long Spans than the use of pure aluminium. A special alloy used for long span transmission work in Norway had the com position 'al, Cu. The tensile strength of this wire is lbs. Per square inch and the elongation 5 per cent. On 2 inches. However, certain grave disadvantages at tend the use oi this material. *'very simple tests have shown that destructive corrosion takes place under ordinary atmos pheric in uences. In addition to this the conductance is only 50 per cent. That of soft copper. Whereas pure aluminium gives 60 per cent.; in other words. The alloy wires must be 20 per cent. Larger and, due to its greater density, prob ably 35 per cent. Heavier than the equivalent pure metal. In its advantages it is on a par with aluminium-steel, but it will be more costly and more liable to give corrosion troubles. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

List of members in v. 1-