ASTM E322-12 test method is comparative and intended for use as a routine method to test materials for compliance with compositional specifications.
Scope:
This test method covers the X-ray fluorescence spectrometric analysis of low-alloy steels and cast irons for the Following elements in the ranges indicated.
| Elements | Mass Fraction Range % |
| Manganese | 0.20 to 1.50 |
| Nickel | 0.10 to 1.00 |
| Chromium | 0.10 to 1.00 |
| Molybdenum | 0.04 to 0.40 |
| Copper | 0.05 to 0.30 |
| Vanadium | 0.03 to 0.25 |
Test procedure:
The sample is finished to a clean, uniform surface, and then irradiated by an X-ray beam of high energy. The secondary x rays produced are dispersed by means of a crystal and the intensities are measured by a detector at selected wavelengths. The results are obtained by relating measured intensities to an appropriate calibration curve.
Test specimen:
Low-alloy steel and cast iron material with the clean and flat surface using appropriate sander equipment with 240 grit or finer aluminum oxide abrasive paper.
Data:
The mass fractions are determined from the prepared calibration curves.
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