Patent ID: 11913100

Abstract:
The present invention relates to a steel for a mold, including 0.070≤C≤0.130 mass %, 0.01≤Si≤0.60 mass %, 0.02≤Mn≤0.60 mass %, 0.003≤P≤0.150 mass %, 0.005≤Cu≤1.50 mass %, 0.005≤Ni≤0.80 mass %, 7.50≤Cr≤8.40 mass %, 0.70≤Mo≤1.20 mass %, 0.01≤V≤0.30 mass %, 0.010≤Al≤0.120 mass %, and 0.015≤N≤0.095 mass %, with the balance being Fe and unavoidable impurities. The steel for a mold according to the present invention satisfies all of 6 properties of SA property, tempering hardness, residual stress, machinability, impact value and corrosion resistance.