lii the bitter cold of high altitudes at which aeroplanes are sometimes forced to fly aluminium becomes stronger than in warm surroundings. This conclusion was reached when samples of the metal were recently tested at 75 degrees F. and then at a temperature of 112 degrees below zero. 71? his means that if it broke under a load of 10001 b. at a temperature of io degrees at 112 degrees below zero it would stand an additional load of bOIb.
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Bibliographic details
Dominion, Volume 24, Issue 149, 20 March 1931, Page 2
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80Untitled Dominion, Volume 24, Issue 149, 20 March 1931, Page 2
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