SYMPOSIA PAPER Published: 01 January 1975

New Method of Microscopic Inclusions Ratings for Specialty Steels in West Germany


For the determination of the microscopic degree of cleanliness, many charts and evaluation methods are in use internationally.

A summary of the best elements from the established methods used by the experts in West Germany is described. A procedure is given to the metallographer that sufficiently describes the microscopic degree of cleanliness as to shape, frequency, and size of the inclusions. The result is suitable for a statistic evaluation with modern computers.

Author Information

Barteld, KGH
Edelstahlwerk Witten AG, Witten/Ruhr, West Germany
Price: $25.00
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Developed by Committee: A01
Pages: 10–21
DOI: 10.1520/STP32283S
ISBN-EB: 978-0-8031-4656-3
ISBN-13: 978-0-8031-0289-7