Where Can I Find a Complete Chart of ASTM Grain Size Numbers?

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The discussion centers on finding a complete chart of ASTM grain size numbers, particularly for a sample with a grain number of 19.5, which exceeds the highest number in standard E112. Participants mention using the linear intercept method for grain size measurement and reference a website for additional information. There is a request for assistance in locating a comprehensive chart that includes higher grain size numbers. The conversation highlights the need for clarity on ASTM grain size classifications and methods for accurate measurement. Overall, the thread emphasizes the importance of reliable resources for understanding grain size in materials.
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ı have a little problem for this problem i found 2 different answer...

Question:İf there Are 400 grains per square inch on photomicrigraph of a ceramic material at 200x.What is its ASTM grain-size number...?

Thanks for your attention...
 
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thnaks for attetion :) its very useful... :D thanks...
 
Hello, I would like to know where can I find a complete chart of ASTM Grain Size numbres. Since the highest number in the chart in E112 is 14.3. And I have a sample whose Grain Number is 19.5.
Thanks for your help
 

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