The new type of cast steel also has obviously higher fracture toughness and resistance to fatigue crack propagation than the conventional ledeburite cast steel and forged Cr 12 type steel, and retains high wear resistance.

• 其断裂韧性和疲劳裂纹扩展抗力明显高于传统莱氏体型铸钢和锻造Cr12类钢；