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    GB/T 1839-2025
    Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products

    GB/T 1839-2025 "Test Method for Determining the Mass of Coating on Steel Products" specifies the test methods for determining the mass per unit area of galvanized coatings on steel products. It is applicable to pure zinc coatings and various zinc alloy and aluminum alloy coating products. The standard covers test principles, preparation of test solutions, sample treatment, selection of test methods, test procedures, as well as result calculation and reporting. The standard introduces the X-ray fluorescence method, providing a basis for arbitration and rapid non-destructive testing, and revises and improves the traditional gravimetric (weight loss) method. Related testing instruments include analytical balances for the gravimetric method and X-ray fluorescence spectrometers for the X-ray fluorescence method.

    This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
    Status Active
    CCS H21 ICS 77.040.99
    Release Date 2025-08-29 00:00:00 Implementation Date 2026-03-01 00:00:00

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