3105 aluminum alloy.
3105 is a grade in the 3xxx series, where manganese is the main alloying element, alongside 3003. The rolled aluminum coil page describes the 3xxx series as roughly 20 percent stronger than 1xxx, with formability and corrosion resistance retained. It is non-heat-treatable, so its strength comes from cold work, and it is used for roofing, gutters, rolling-shutter slats and coated coil. 3105 is the substrate in Orbit's confirmed recycled-content example of roughly 75 percent with a PUPA coating, which is confirmed per order. Alloy and temper determine formability, strength and corrosion behavior. Orbit's rolled aluminum coil is 0.20 to 2.00 mm thick and up to 1650 mm wide, in 1xxx, 3xxx and 5xxx alloys, and temper is available on request.
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