Development of an Improved Inclusion Assessment Approach for Steels

Control of non-metallic inclusion composition, morphology, and distribution is crucial for superior product quality, enhanced mechanical properties, and efficient processing in the era of "clean" steels. This study addresses the limitations of prevailing semi-quantitative inclusion assessment standards, specifically ASTM E45 and ASTM E2142, by benchmarking their results with the quantitative statistical technique, ASTM E2283. A refined approach is proposed that employs relevant statistical data sets for specific grades of OCTG and line pipe steel tubulars to predict composition-based critical inclusion sizes that may be linked to specific performance properties, such as fracture toughness in hydrogen and sour environments.

Authors:

Amrita Bag | EVRAZ North America R&D
 

Bikram Konar | EVRAZ North America
 

Keyan Miao | Stelco
 

Michael Gaudet | EVRAZ North America
 

Session Chairs:

Saeid Kamalpour | North American Stainless
 

Bryan Webler | Carnegie Mellon University
 

Keyan Miao | Stelco Inc.