Bubble chart. Banana diagram. Steel strength ductility diagram—it’s been called a lot of things over the years. But the Global Formability Diagram (GFD) is our most popular image request from engineers and students all over the world and appears in thousands of presentations and papers. Because of that, we periodically update it to make sure it reflects the most current picture of both commercially available, as well as emerging steel grades. Because steel is always changing–you knew that, right?
In this AHSS Insights blog, we are providing our updated GFD for download as well as definitions of steel classifications, as agreed to by our member companies. If you’d like to read the definition of what constitutes Advanced High-Strength Steel, Ultra-High Strength Steel and what’s different about 3rd Generation AHSS, this is your blog.