ASTM E1251
Full Name
ASTM E1251 – Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry
Scope
ASTM E1251 is a standard test method used to determine the elemental composition of aluminum and aluminum alloys using spark atomic emission spectrometry. This technique involves generating a high-voltage spark between the sample and a reference electrode, causing the atoms in the sample to emit light at specific wavelengths. By analyzing the intensity of these emitted lines, it is possible to quantify the concentration of various elements in the aluminum alloy.
Test procedure:
- Sample preparation: the aluminum alloy sample is prepared into a suitable form, such as a flat surface or a sparkable pellet.
- Spark generation: a high-voltage spark is generated between the sample and a reference electrode.
- Light emission: the atoms in the sample are excited by the spark, causing them to emit light at specific wavelengths.
- Spectral analysis: the emitted light is dispersed by a spectrometer and analyzed to determine the intensity of the spectral lines.
- Quantification: the concentration of each element is calculated based on the intensity of its corresponding spectral line and calibration standards.
Elements typically analyzed:
- Aluminum
- Silicon
- Copper
- Manganese
- Magnesium
- Zinc
- Iron
- Titanium
- Chromium
- Nickel
- Lead
- Bismuth
- Tin
- Vanadium
Applications – spark atomic emission spectrometry is widely used in the aluminum industry for:
- Quality control: ensuring that aluminum alloy products meet specified chemical compositions.
- Process monitoring: monitoring the composition of aluminum alloys during manufacturing processes.
- Research and development: developing new aluminum alloys with desired properties.
Resources
Keywords
spark atomic emission spectrometry; aluminum; aluminum alloys; test method; elemental composition; sample preparation; spark generation; light emission; spectral analysis; quantification; elements; quality control; process monitoring; research and development; aluminum industry; testing services; ASTM E1251