Abstract
This dataset provides the effect of cooling rate using nano-fluid quenchant. The nanofluid consists of 0.1, 0.3, and 0.5 gram of nano-sized carbon particles in 100 ml of distilled water. Pure distilled water was also used as a comparison control. The particle was produced by using planetary ball-mill at 500 rpm for 15 hours. Field-Emission Scanning Microscope (FE-SEM) and Energy Dispersive X-Ray (EDX) were also used to confirm the size, shape, and purity of the nanoparticles. These nanofluids were then applied to quench annealed S45C carbon steel samples. The samples were connected to a thermocouple with a temperature data logger to observe the cooling rate of the nano-fluid quenchant. The quenched samples were tested to get the information on the hardness of S45C carbon steel.