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ASTM
C839-82(2020)
Standard Test Method for Compressive Stress of Porcelain Enamels by Loaded-Beam Method
2020
7
ASTM Vol.02.05 (2022)
1.1 This test method covers the measurement of the compressive stresses (Note 1) developed by fired porcelain enamels using the loaded-beam method.
NOTE 1: Although some may interpret the calculations that are used in this test method as indicating compressive load, it is commonly referred to as compressive stress within the porcelain enamel industry.
1.2 This test method is limited to the use of the loaded-beam method. However, this method includes charts (Fig. 1 and Fig. 2) that provide for conversion of loaded-beam test results to warp and ring stress values.