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__________ is added to aluminum to improve strength of the alloy.

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in Food Packaging Technology by (63.0k points)
__________ is added to aluminum to improve strength of the alloy.

(a) Titanium

(b) Chromium

(c) Magnesium

(d) Tin

The question was posed to me in class test.

This intriguing question comes from Metal as Packaging Material topic in chapter Metal Packaging Materials of Food Packaging Technology

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Right answer is (c) Magnesium

The explanation: Magnesium is added to aluminum to improve strength. It also increases its strain hardening ability.  These alloys are the highest strength non heat-treatable aluminum alloys and hence are used widely for structural applications.

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