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Is it possible to temper an oil-quenched 4140 steel cylindrical

Is it possible to temper an oil-quenched 4140 steel cylindrical

Is it possible to temper an oil-quenched 4140 steel cylindrical shaft 100 mm (4 in.) in diameter so as to give a minimum tensile strength of 850 MPa (125,000 psi) and a minimum ductility of 21%EL? If so, specify a tempering temperature. If this is not possible, then explain why.

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