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    A Field Test Kit and Procedure for Use in the Rapid Identification of Some Nickel Alloys and Stainless Steels

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    The purpose of this paper is to describe a test kit for use in the field for the rapid identification or classification of certain nickel alloys and certain stainless steels. A procedure for identifying or classifying these metals is also given. The metals or groups of metals which may be separated and identified or classified by this procedure are: Nickel, Monel metal, Inconel, A.I.S.I. type 316 stainless steel (18- 8 Mo), Other chrome-nickel stainless steels as a class, Straight chromium stainless steels as a class, and Carbon and low-alloy steels as a class. Materials which are simply classified into one of the above groups must be further identified either by quantitative analysis or by further spot testing which will not be described in this paper. If must be known that the compositions of the specimens of material to be identified lie within the limits stated above. It is important that all tests be made on a clean surface of the metal and also that specimens of known composition be on hand for comparison. It cannot be too strongly stressed that in testing of this type all definitely known facts of an engineering and metallurgical nature which are pertinent to the problem on hand should be gathered and analyzed. Such a procedure will often pay good dividends in time and expense saved in testing. As an example of the usefulness of this type of information, it may be known that only a certain kind of chrome-nickel stainless steel had ever been used in the area in question. Thus, the classification of an unknown specimen as chrome-nickel stainless steel would serve as a satisfactory identification of that specimen.

    Author Information:

    Lea, Henry B.
    Eastman Kodak Co., Rochester, N. Y.

    Committee/Subcommittee: E01.01

    DOI: 10.1520/STP47559S