Some Aspects of Modern Aircraft Materials

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Abstract
Wartime experience with aircraft steels emphasised the desirability of a complete revision of specifications for aircraft steels from both the technical and inspectional points of view. This was undertaken in association with the steel makers and the Society of British Aircraft Constructors under the aegis of the British Standards Institution. The aims were (i)To reduce the number of basic types of steels to a minimum, consistent with satisfying the demands of aircraft engineers. (ii)To transfer as many materials from the D.T.D. series of specifications to the B.S. Aircraft series. (iii)To prepare an Inspection and Testing Schedule, which would exist separately from the Materials Specifications, but applicable to all steels in whatever form they may be required. (iv)To achieve a degree of economy in alloying elements, again without detriment to the satisfying of designer's requirements. The Inspection and testing schedule was issued as British Standard S100 in January 1949, but significant difficulties in its full application appeared in practice and it was not until the second half of 1952 that agreement was reached to put into practice the current standard 2 S100.

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