Influences of Titanium Content and Austenitizing Temperature on Hardenability of 20MnMoB Steel

The influences of titanium content and austenitizing temperature on hardenability of 20MnMoB steel have been investigated.The results show that the excess Ti is the main parameter for the steadiness of hardenability,and there is a maximum of hardenability with austenitizing temperature increase.The experimental steel with about 0.02% excess Ti possesses the best hardenability after quenching at about 900℃.