Accurately filters out critical defects like hot tears while preventing the unnecessary scrapping of parts with minor porosity.

ASTM E125 categorizes indications into eight distinct types (designated by Roman numerals I–VIII). Most types include five degrees of severity. Steel Founders’ Society of America Discontinuity Category Description Linear Discontinuities

Note: There is standard that replaces ASTM E125 for magnetic particle inspection on ferrous castings.