.250 6061 T651 Aluminum Metal Sheet Plate - 12 x 24 x 1/4" - All of our metal is squared cut from mill sheets and then edge sanded to remove burrs from shearing. We packaged to protect from getting damaged from shipping. Uses Auto repair, Home projects, craft work, hobby projects, shop work, and business work. About 6061 T651 Aluminum - 6061-T651 Aluminum Plate is one of the most adaptable and popular aluminum alloys. This aluminum-silicon-magnesium alloy is strengthened by precipitation hardening offering excellent machinability, formability and weldability. 6061 aluminum plate is a medium strength alloy and is typically selected when welding or brazing is required or for its high corrosion resistance in all tempers. 6061 has excellent joining characteristics, good acceptance to anodizing and is easily cold worked and formed in the annealed condition.