Question: A bar of a class 40 gray iron casting is found to have a tensile strength of 50,000 psi. Why is the tensile strength greater

A bar of a class 40 gray iron casting is found to have a tensile strength of 50,000 psi. Why is the tensile strength greater than that given by the class number? What is the diameter of the test bar?

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The strength of gray iron depends on the cooling rate of the casting faster cooling rates produce ... View full answer

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