A New Metal Foam Is as Bulletproof as Heavy Steel Armor, Researchers Say
10th June 2019
Composite metal foam—or CMF, for short—is a material made from hollow metallic spheres that are surrounded by a matrix that can be made from various types of metals, including titanium or even alloys. If you’ve ever had to clean up those tiny white balls of styrofoam after unboxing a gadget, then you already have a good understanding of what this material is. The researchers behind this study made their CMF exclusively from steel, to maximize its strength and stopping power.