ASTM A247
Full Name
ASTM A247 – Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings
Scope
This test method covers the classification of graphite in cast irons in terms of type, distribution, and size by visual comparison to reference photomicrographs.
This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and may be applied to gray irons, malleable irons, compacted graphite irons, and the ductile (nodular) irons.
Keywords
microstructure of graphite; iron castings; iron-carbon alloys