In a 1000 series aluminum what do the last two digits represent?

In a 1000 series aluminum what do the last two digits represent?

• A. Percent purity
• B. Heat treatment
• C. Manufacturing lot
• D. Tensile strength

Answer: (A)

In the 1000-series, the digits after the leading "1" reflect how pure the aluminum is. The last two digits specify the minimum aluminum content as a percentage. For example, 1050 means at least 99.50% aluminum, and 1100 means at least 99.00% aluminum. That’s why the last two digits represent percent purity. The other factors—heat treatment, manufacturing lot, or tensile strength—aren’t indicated by those digits in this series; these properties are determined by other designations or processing details.

In the 1000-series, the digits after the leading "1" reflect how pure the aluminum is. The last two digits specify the minimum aluminum content as a percentage. For example, 1050 means at least 99.50% aluminum, and 1100 means at least 99.00% aluminum. That’s why the last two digits represent percent purity. The other factors—heat treatment, manufacturing lot, or tensile strength—aren’t indicated by those digits in this series; these properties are determined by other designations or processing details.