Abstract
The report is presented in three parts. Part I reviews the development of high-duty cast irons during the past fifteen years and relates them to the material traditionally used. This is illustrated by results given in Part II, derived from materials actually supplied by manufacturers and designed to show the present state of the art. When complete, these records will form the basis on which a major portion of the Committee's programme will rest, the service trial of selected materials in appropriate engineering applications. The remaining portion of the programme consists in the preparation of materials covering the whole range of cast irons and the determination of their mechanical properties. The first results of this are given in Part III, and it is intended, when the range is completed, to select materials which show sufficient promise for submission to a complete range of mechanical tests. In the meantime, it is hoped that discussion will assist the Committee in its future work.
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