Astm E562-19e1 2021

Extremely High; software can automatically scan and calculate thousands of fields continuously.

ASTM E562 typically targets a Relative Accuracy of for acceptable engineering or QA standards, though a 20% RA may be acceptable for trace phases or rapid screening. 6. Practical Example Calculation

Quantitative Description of the Microstructure of Duplex ... - MDPI

High tolerance; human eyes can distinguish faint boundaries. astm e562-19e1

This article is for informational purposes only. Always refer to the official ASTM E562-19e1 document for certification or compliance testing.

(Use the standard text for exact formula variants and shape corrections.)

: Applied in materials like Ti-4822 to track lamellar vs. equiaxed grain content after cyclic induction treatments to verify high-temperature forgeability. Always refer to the official ASTM E562-19e1 document

A manual tally counter or digital spreadsheet to record points. 4. Procedural Steps for Execution

The standard can be purchased or reviewed in detail through the ASTM International website automated image analysis

. The raw point counts are recorded. The volume percent of the constituent is then calculated as: you may need 1000–2000 total counts

If too high, structure looks sparse; if too low, boundary decisions become impossible.

The standard provides tables and a formula (based on the binomial distribution) to determine the total number of point-phase hits needed. For a phase present at 10% volume fraction, you may need 1000–2000 total counts; for 50%, fewer counts are needed.