Results of Interlaboratory Retained Austenite Measurements Utilizing X-Ray Diffraction 800427

The data from a round-robin program, run by the X-ray Division of the SAE Fatigue Design and Evaluation Committee to evaluate x-ray techniques for measuring retained austenite, have been studied. This program involved the measurement by twenty-three companies of four specimens containing 0–40% retained austenite. The results show that laboratories using proper techniques can achieve an interlaboratory standard deviation of less than 4% retained austenite at the 40% level and less than 1.5% at the 5% level.


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