This guide outlines the scope, preparation, and execution steps for utilizing this standard in metallurgical testing. 1. Scope and Application
. This involves creating a controlled electrical discharge (spark) in an argon atmosphere to ablate material from a sample, causing atoms to emit radiant energy that is then measured to identify elements. Scope & Samples : Primarily designed for chill cast disks astm e125117a pdf
: Samples must be machined with a lathe or milling machine to produce a smooth, flat surface that creates a perfect seal with the spark stand. Argon Purity : Requires argon with a minimum purity of to avoid precision loss due to contamination. Reference Materials This guide outlines the scope, preparation, and execution
. However, it can also be used for other forms like castings, foils, sheets, and extrusions, provided they are thick enough to avoid overheating and can be machined into a flat surface. ASTM International Key Technical Details Reference Materials
(spark) in an argon atmosphere between a sample's flat surface and a counter electrode.