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A cylindrical rod of copper originally 12mm in diameter is to be cold worked by drawing; the circular cross section will be maintained during deformation.

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A cylindrical rod of copper originally 12mm in diameter is to be cold worked by drawing; the circular cross section will be maintained during deformation. A cold-worked tensile strength in excess of 325MPa and a ductility of at least 15%EL are desired. Furthermore, the final diameter must be 9.3mm. Explain how this may be accomplished

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