A Brief Look at Two Aluminum Grades

​Based in Fort Lauderdale, Florida, David D’Addario is the CEO and Chairman of Dada Holdings, a Florida-based investment management company that regulates investments and oversees companies in various industries; he has over 35 years of experience heading industrial businesses. In addition, David D’Addario served as the CEO and Chairman of New Day Aluminum, LLC and its branches (Noranda Bauxite and Noranda Alumina).

Several grades of aluminum exist; two of such grades are alloys 6061 and 3003. Also known as “the workhouse aluminum,” grade 6061 has excellent strength and resistance to corrosion. As a result, this versatile alloy grade is suitable for products prone to extreme wear and tear level. In addition, the strength of the grade 6061 makes it ideal for environments with high levels of atmospheric moisture (humidity), resisting corrosion.

Meanwhile, grade 3003 is a commonly used pure aluminum. Manganese helps increase its strength; it consists of 1.2 percent manganese (Mn), 98.6 percent aluminum (Al), and 0.12 percent copper (Cu). In addition, grade 3003 is a suitable substitute for grade 6061 (though it has less corrosion resistance). Finally, one can weld or braze grade 3003, best suited for pot lids and kitchenware.

David D'Addario, New Day Aluminum LLC

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