Various destabilization heat treatments at 880°C, 980°C, 1080°C, and 
1180°C for one hour followed by tempering at 500°C for two hours 
were conducted on 2.55 wt.%-C, 21.8 wt.% Cr high chromium white 
cast iron alloy. Investigations were done into how high chromium white 
cast iron alloy's microstructure and mechanical characteristics were 
modified by heat treatment. It has been observed that destabilization heat 
treatment at temperatures of 880°C, 980°C, 1080°C, and 1180°C for 1 
hour each, followed by tempering at 500°C for 2 hours, has an impact on 
the combination of abrasion wear resistance and hardness. The obtained 
hardness values are the result of the mixture of the martensite formed, 
stoichiometry and morphology of the secondary carbides present mainly 
M7C3. The optimum hardness values and abrasion wear resistance were 
for destabilization heat treatment at 980 °C. The secondary carbides 
were severely dissolved at 1180 °C, and as a result, the austenitic phase 
was stabilized. The relationship between microstructural characteristics 
and combinations of hardness and abrasion wear has been detailed