This is a sheet of 4130 chromoly steel, a popular alloy known for its good strength, weldability, and toughness. It's in the annealed condition (softened for easier forming and machining) and meets the AMS-6350 aerospace material specification. The sheet is .025 inches thick (about 22-23 gauge) and measures 36 inches by 36 inches. 4130 is widely used in motorsports (roll cages, chassis parts), aerospace, bicycle frames, fabrication projects, and firearm components. This size gives you a good amount of material to work with for prototyping, custom brackets, or other DIY and professional metalworking projects. Always follow proper safety procedures when cutting, welding, or machining steel.
