STP175

    Resistance of Aluminum-Base Alloys to 20-Year Atmospheric Exposure

    Published: Jan 1956


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    Abstract

    This paper comprises a discussion of the 20-yr atmospheric weathering data obtained on wrought aluminum-base alloys included in an investigation on non-ferrous metals sponsored by Committee B-3 of the American Society for Testing Materials. The pertinent data obtained after exposure periods of 1, 3, 6, 10 and 20 yr have been tabulated and also arranged graphically to illustrate characteristics of specific interest, such as (1) effect of natural aging on the tensile strength of specimens stored indoors for 20 years; (2) rating of the corrosivity of the seven atmospheric conditions employed; and (3) the rate of weathering of the five aluminum alloys. These important data have been further enhanced by correlating them with equally long-time data obtained by the Aluminum Research Laboratories on similar alloys in other atmospheric environments, and on newer aluminum alloys which now complement or supersede the alloys which had been in the ASTM investigation.


    Author Information:

    Walton, C. J.
    Assistant Chief, and Research Metallurgist, Aluminum Research Laboratories, Aluminum Company of America, New Kensington, Pa.

    King, W.
    Assistant Chief, and Research Metallurgist, Aluminum Research Laboratories, Aluminum Company of America, New Kensington, Pa.


    Paper ID: STP44083S

    Committee/Subcommittee: G01.04

    DOI: 10.1520/STP44083S


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