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_______ increases susceptibility of the alloys to Stress corrosion cracking.

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in Food Packaging Technology by (63.0k points)
_______ increases susceptibility of the alloys to Stress corrosion cracking.

(a) Silicon

(b) Lead

(c) Iron

(d) Zinc

This question was posed to me during an internship interview.

This question is from Metal as Packaging Material in portion Metal Packaging Materials of Food Packaging Technology

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Right option is (d) Zinc

Easiest explanation: Zinc increases susceptibility of the alloys to Stress corrosion cracking. But addition of zinc to aluminum has some benefits. Zinc, in aluminum alloy increases strength and allows precipitation hardening. Zinc and aluminum alloy is heat-treatable and has a very high strength.

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