The database contains 3,731 Macro Defects in Steel (with the 5,310 figures) collected from the journals, books, and web sites from the year 1958 to the year 2017. All information herein is a extracted from open literature, and is a orginally written by the authors, from the source references cited. Database is searchable with the usual keyword search - by steel name, or any other words. We hope that this database makes your professional life more productive and easily.