Investigating the Effect of Cooling Media on Hardness, Toughness, Coefficient of Friction, and Wear Rate of Mild Steel Heat Treated at Different Temperatures

Table 6

Dry tribology experimental results at 10 N and 20 N sliding load.

Cooling media	Wear rate [mm^3/N/m] (load of 10 N)	Wear rate [mm^3/N/m] (load of 20 N)	Maximum coefficient of friction at 10 N sliding load	Maximum coefficient of friction at 20 N sliding load
Parent sample	0.000417	0.001304	0.441	0.451
500°C cooled with air	0.001534	4.342E-006	0.549	0.433
500°C cooled with oil	0.0001259	0.0005235	0.530	0.448
500°C cooled with water	9.937E-005	0.000443	0.414	0.476
900°C cooled with air	3.223E-008	0.000472	0.390	0.434
900°C cooled with oil	4.383E-005	0.0002998	0.529	0.398
900°C cooled with water	8.661E-008	0.0007701	0.454	0.483