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Which of the following specifications of the specimen is must increase the reliability of a corrosion test?

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Which of the following specifications of the specimen is must increase the reliability of a corrosion test?

(a) Chemical composition

(b) Fabrication history

(c) Metallurgical history

(d) Chemical composition, fabrication history, and metallurgical history

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Question is from Testing topic in portion Corrosion Testing of Corrosion Engineering

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The correct answer is (d) Chemical composition, fabrication history, and metallurgical history

Easiest explanation: Exact chemical composition, fabrication history, and metallurgical history of a specimen are must increase the reliability of a corrosion test. Specimen with 1/16 to ¼ inch thick, 1 inch wide, and 2-inch-long are commonly employed for laboratory testing.

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