METHOD FOR MAKING HIGH STRENGTH ALUMINUM ALLOY SHEET AND PRODUCTS MADE BY SAME

摘要

Disclosed is a method for producing a non-heat-treatable high strength aluminum sheet from aluminum scraps using a continuous caster. The method includes providing a molten aluminum non-heat-treatable alloy including Si about 0.7% max., Fe about 0.8% max., Cu about 0.3% max., Mn about 0.5-1.2%, Mg about 1.3-2.8%, Zn about 0.20% max., Cr about 0.2% max., Zr about 0.30% max., Sr about 0.30 max., the remainder aluminum, incidental elements and impurities; and continuously casting the molten aluminum alloy into a slab and rolling the slab into a sheet product with high strength and reasonable formability. Typically, the sheet product is used for the products, such as truck trailer siding panel or electrical conduits for the building industry.