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A photomicrograph was taken of the microstructure of a metal specimen at a magnification of 30, and it was determined that the average number of

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A photomicrograph was taken of the microstructure of a metal specimen at a magnification of 30, and it was determined that the average number of grains per square inch was 10. (a) What is this specimen's ASTM grain size number? (b) From linear intercept measurements, what is the mean intercept length for this metal? (a) G= (b) 6= mm

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