: Specimens must be "massive" enough to prevent over-heating during the spark process. ASTM International 🧪 Elements Analyzed
: Samples must be "chill cast disks" or other massive forms that can be machined to a clean, flat surface to create a seal with the spark stand. astm e125117a pdf
: It is primarily designed for chill cast disks but can be applied to other massive forms like ingots and billets, provided they have a clean, flat surface for machining and a similar metallurgical history to the reference materials used. : Specimens must be "massive" enough to prevent