Abstract: The effects of quenching medium on the mechanical properties of scrap and new carbon steel welded joints were investigated. Using flux coated electrodes AWS/SFA 5.1 E-6013, the welding was carried out at 100 A at welding speed of 1.52 mm/s and a constant arc voltage of 21 V with root gap and root face kept at 3 mm each. Three quenching media were used namely water, air and engine oil. Tensile, impact and Vicker’s hardness tests were conducted on the welded joints to determine the effect of cooling rate on materials’ mechanical properties. With the Ultimate Tensile strength, it was observed that the new sample had higher tensile strength compared to the scrap sample.