Metallic Coatings on Steel by X-Ray Fluorescence ASTM A754

Metallic Coatings on Steel by X-Ray Fluorescence ASTM A754

ASTM A754 test method determines the coating weight of metallic coatings such as zinc coating or zinc alloy coating on steel sheets by using X-ray fluorescence and can be applied to the layers covered by various ASTM specifications. The test method’s final results must be expressed in either inch-pound units or SI units.

    Scope:

    This test method establishes a standard for calculating the weight and thickness of coatings on steel sheets by applying X-ray fluorescence or isotope measuring instruments. Zinc coating protects against corrosion. Different layer designations are formed as per the specifications of the zinc-coated steel sheet, which helps the purchaser choose the most suitable coating weight. 

    Test Procedure:

    Each instrument is operated such that the area of fluorescence remains between 970 and 3200 mm² for X-ray tube gauges and 3200 and 9000 mm² for isotope gauges. The traversing speed should be such that it leads to less than 1% test error, and the triple spot technique should be used to calculate coating weight. Stable temperature, accuracy, and cleanliness are to be practiced.

    Specimen Size : 

    The specimen is created to the measurements specified, within the thickness 5/µ and area 9 by 9 in.

    Data:

    Weight is reported in SI Units or Inch pound units.

    Accuracy of X-ray tube and isotope coating weight gauges, when used for determining coating weight specifications are above 1.3 oz/ft2/side [400 g/m2/side] for zinc coatings, 0.066 oz/ft2/side [20g/m2/side] for tin coatings, and 0.82 oz/ft2/side [250 g/m2/side] for aluminium coatings.

    OUR SERVICES

    Core Materials Testing Services

    Metrology

    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services

    POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services

    POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services

    POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have 500+ Material Test already Done for top companies

      Send us a request

        idea icon

        Want to connect with an expert before you leave?