Hariharan V S
Indian Institute of Technology (IIT), Chennai
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## < 1 Other formulas that you can solve using the same Inputs

Total magnification
Total Magnification=Magnification*Magnification GO

### ASTM grain size number to Number of grains Formula

Number of grains at M X=2^(ASTM grain size number-1)*(100/Magnification)^2
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## ASTM grain size number

American Society for Testing and Materials (ASTM) has prepared several standard comparison charts, all having different average grain sizes. To each is assigned a number ranging from 1 to 10, which is termed the grain size number. More details can be found in ASTM Standard E 112, “Standard Methods for Estimating the Average Grain Size for Metals”.

## How to Calculate ASTM grain size number to Number of grains?

ASTM grain size number to Number of grains calculator uses Number of grains at M X=2^(ASTM grain size number-1)*(100/Magnification)^2 to calculate the Number of grains at M X, ASTM grain size number to Number of grains per square inch at any magnification conversion is made by multiplying the number of grains at 100 X with the square of the ratio of 100 and that magnification. Number of grains at M X and is denoted by NM symbol.

How to calculate ASTM grain size number to Number of grains using this online calculator? To use this online calculator for ASTM grain size number to Number of grains, enter Magnification (M) and ASTM grain size number (n) and hit the calculate button. Here is how the ASTM grain size number to Number of grains calculation can be explained with given input values -> 16 = 2^(5-1)*(100/100)^2.

### FAQ

What is ASTM grain size number to Number of grains?
ASTM grain size number to Number of grains per square inch at any magnification conversion is made by multiplying the number of grains at 100 X with the square of the ratio of 100 and that magnification and is represented as NM=2^(n-1)*(100/M)^2 or Number of grains at M X=2^(ASTM grain size number-1)*(100/Magnification)^2. Magnification is the process of enlarging the apparent size, not physical size, of something and ASTM grain size number is represented by a number ranging from 1 to 10.
How to calculate ASTM grain size number to Number of grains?
ASTM grain size number to Number of grains per square inch at any magnification conversion is made by multiplying the number of grains at 100 X with the square of the ratio of 100 and that magnification is calculated using Number of grains at M X=2^(ASTM grain size number-1)*(100/Magnification)^2. To calculate ASTM grain size number to Number of grains, you need Magnification (M) and ASTM grain size number (n). With our tool, you need to enter the respective value for Magnification and ASTM grain size number and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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