Evaluation of the ASTM E45 as a Measure of Steel Cleanliness in EAF and Integrated Route Automotive Sheet Grades

The ASTM E45 optical-based inclusion rating method was first developed in 1942 based on charts published by Jernkontoret in Sweden in 1936. With various minor revisions and additions since, it has served as an industry standard for the past 80 years. However, in this time, there have been considerable changes in steelmaking and casting practices as well as significant advances in steel grade design, leading to changes in inclusion population. This paper will evaluate the effectiveness of the ASTM E45 as an inclusion rating method on automotive sheet, electric resistance welded tubular and boron-titanium containing seamless tubular grades.

Authors:

Dr. Scott Story | United States Steel Corporation
 

Eileen Hung | United States Steel Corporation
 

T. W. Renz | United States Steel Corporation
 

Mr. Alex Capsambelis | RJ Lee Group
 

G. S. Casuccio | RJ Lee Group
 

H. Lentz | RJ Lee Group
 

Mr. Mike Potter | RJ Lee Group
 

Session Chairs:

Bill Jones | U. S. Steel - Granite City Works
 

Sunday Abraham | SSAB Iowa Inc.