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Automotive parking gears were tempered using three different tempering processes with a motive of determining the best tempering processes in terms of the properties of the heat treated samples. The three tempering processes compared in this study are Induction temper, Furnace temper and Magnetic core-flux temper. Torsion tests, Residual Stress tests and metallurgical analysis were done on the samples that were induction heat-treated and then tempered using one of the above mentioned three tempering processes. The resultant test data was used to draw conclusions on the performance of the tempering processes.