Question

Determine the ASTM grain size number if 90 grains per square inch are measured at a magnification of 65x, Part 1 In this problem, you are asked to find the ASTM grain size number given the number of grains per square inch and the magnification. Solve Equation 4.18 (below) for G. nu (100) = 20-1 0(0,0) Valio [0:0] Hasinaresin TO I COOO a . . va 40 10 X Erase Save & Close Undo Redo Select All Select Delete Help Cancel Go Left Go Right abc ABC aßy ABC Math Math 1 8 9 - 0 qwertyuiop 4 5 6 + + al salgniku 1 2 3 - o * | = v v VI IV U Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT Part 2 Use your equation to find the ASTM grain size number. the tolerance is +/-2%

Answer 1

For solving the problem we are using → G- M= Number of gains pe 2 G = ASTM grain nun size - magnification M. grain number Poort 17 100mm (o)" ] 100 (24) = 100 (mm) +2 109(en) (0-1) 10g 2 76-1 - 673" frog (mm+ 2006 ( Tog mm +2109 Moo log 2 ti for Gr. This is the simplified equation • Part 2 → here, nm = 90 M = 65 putting simplified equation the values in the 10g 90+ 2100(550) 63- 1092 =16:2] (ams)

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