A beautiful golden copoured bronze , composed of 90parts copper to 10 of aluminum . Its tenacity largely depends upon the purity of the copper from which it is alloyed , tests having guven tensile strength of 73,187lbs., minimum to 96,280 lvs., Per square inch. The average figures far nearer the second figures than the first . A compressive strength of 132,000lbs. Per sq. Inch has been obtained . Aluminum alloys are now used for many purposes where lightness is a necessity.
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