The research has been carried out on the effect of austenization process on hardness,microstructure,and tensile strength on carbon steel while SAE 1050 and SAE 1552.The aim of the study was to determine the tensile strength and hardness due to austenization process on motor chain components from medium carbon steel SAE 1050 and SAE 1552 The process of austenizing heat treatment at a temperature of 8500C and held for 40 minutes,then quenched into a temperature of 600C oil medium,then tempered at a temperature of 2600C for 60 minutes.The results of the hardness test showed that carbon steel was SAE 1552 experiencing an increase in hardness of 4.25% compared to SAE 1050.The results of SAE1552 medium cyron's steel tensile strength test were 1781.04 N/mm~2 and SAE 1050 1711.43 N/mm~2,tensile test results SAE 1552 material is higher than SAE 1050.The results of microstructural observations show the formation of the'martensite phase and the remaining austenite phase.
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