For aluminum designated as 1030 in the 1000 series, the material purity is approximately what?

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Multiple Choice

For aluminum designated as 1030 in the 1000 series, the material purity is approximately what?

Explanation:
In the 1000-series, the designation expresses the aluminum content as a percent, with two digits after the leading numbers showing hundredths of a percent. A designation of 1030 means about 99.30% aluminum, with roughly 0.70% of other elements or impurities. So the material’s purity is approximately 99.30%. The other options don’t fit because they would imply lower or impossible purity for this series and designation.

In the 1000-series, the designation expresses the aluminum content as a percent, with two digits after the leading numbers showing hundredths of a percent. A designation of 1030 means about 99.30% aluminum, with roughly 0.70% of other elements or impurities. So the material’s purity is approximately 99.30%. The other options don’t fit because they would imply lower or impossible purity for this series and designation.

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