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Metals like chrome-molybdenum steel are heated to a temperature of ____________ to make bushings.

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Metals like chrome-molybdenum steel are heated to a temperature of ____________ to make bushings.

(a) 500 or 750 psi

(b) 1000 psi

(c) 650,000 or 7000,000 psi

(d) 125,000 or 150,000 psi

I have been asked this question in final exam.

The question is from Materials Selection topic in chapter Materials Selection of Aerospace Materials & Processes

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The correct option is (d) 125,000 or 150,000 psi

The best I can explain: Bushings are manufactured by heating metals like chrome-molybdenum steel to a temperature of 125,000 or 150,000 psi. Bushings can be replaced by new parts once they are worn out.

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