Retained austenite content, mechanical properties, tensile strength x elongation (TSxEL) and unnotched charpy impact energy were studied from the controlled austenitizing and hardenability as a function of austempering temperature at various temperatures. These measurements were made by comparison between the result from the normal salt bath and water mixed salt bath. The comparison shows that water mixed salt bath improves tensile strength, elongation, impact energy and tensile strength x elongation better than the normal salt bath. The tensile strength, elongation and impact energy were satisfied to the ASTM standard at austempering temperature of $280^{circ}C;and;330^{circ}C$. The retained anstenite contents were increased with austempering temperature.