3/8" x 4" Aluminum Flat Bar T6511 Mill Stock 0.375" 6061 Plate 2" Length,Stock 0.375" 6061 Plate 2" Length 3/8" x 4" Aluminum Flat Bar T6511 Mill, general-purpose aluminum alloy that can easily be machined or welded, It has a high resistance to corrosion, and an excellent weight-to-strength ratio, 6061 Aluminum Flat Bar,6061 aluminum is a lightweight, Mill Stock 0.375" 6061 Plate 2" Length 3/8" x 4" Aluminum Flat Bar T6511.