ASTM E572 Analysis of Stainless and Alloy Steels by WDXRF

ASTM E572 Analysis of Stainless and Alloy Steels by WDXRF

ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.

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    Scope:

    Based on wavelength dispersive X-ray fluorescence spectrometry (WDXRF), ASTM E572 is a straightforward method for analyzing stainless and alloy steel samples. This approach is appropriate for quality control in the production process as well as ensuring that the product satisfies specifications. The analytical performance data is used as a benchmark to see if similar X-ray spectrometers have the same precision and accuracy, or if a particular spectrometer’s performance has changed.

    Test Procedure:

    The test specimen used in ASTM E572 testing is finished to a clean, uniform surface and then irradiated with an X-ray beam of high energy. The secondary X-rays produced are dispersed by means of crystals and the count rates are measured by suitable detectors at selected wavelengths. The outputs of the detectors in voltage pulses are counted. Then, the mass fractions of the elements are determined by relating the measured radiation of unknown specimens to analytical curves prepared using suitable reference materials. In ASTM E572 testing, both simultaneous spectrometers containing a fixed-channel monochromator for each element and sequential spectrometers using a goniometer monochromator can be used for the measurement of the elements.

     Specimen size:

    The ASTM E572 test specimen should have a clean, uniform, and flat surface of greater diameter than the chosen viewed area. The accuracy of test results can improve by making multiple measurements on freshly prepared surfaces of the same specimen.

    Data:

    In ASTM E572 testing, X-ray data of corresponding elements is provided.

    Conclusion :

    ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF).

    Conclusion :

    ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF).

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