60 years ago. (Pastimes).

Advanced Materials & Processes,  June, 2003  

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June 1943: A great deal of work has been done looking toward the development of a suitable aluminum-beryllium alloy. Tests on certain alloys, made experimentally, show that the hot strength is considerably above that of other aluminum alloys. The thermal conductivity is also of a high order, and the thermal expansion is low.

These properties seem favorable for aircraft pistons and certain other engine parts. After much experimental work there has been some progress in producing workable ingots of approximately 35% beryllium weighing 10 or 15 lb. Even from these small ingots small ...

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