STEEL FOR HOT TOOLING, AND PART PRODUCED FROM SAID STEEL, METHOD FOR THE PRODUCTION THEREOF, AND USES OF THE SAME

摘要

The invention relates to steel for hot tooling, the composition of said steel being made up of the following weight percentages: 0.30 % = C = 0.39 %, 4.00 % = Cr = 6.00 %, traces = Si = 0.50 %, traces = Mn = 0.80 %, traces = W = 1.45 %, traces = Co = 2.75 %, 0,80 % = Ni = 2.80 %, 1.50 % = Mo = 2.60 % with 1.50 % = Mo + 0.65W = 3.20 %, 0.55 % = V = 0.80 %, with 0.65 = K = 0.65, where K = K2 - K1 and K2 = 0.75 x (Ni 0.60), K1 = 1.43 x (V 0.40) + 0.63 x [(Mo + 0.65W) 1.20], traces = Al = 0.080 %, traces = S = 0.0040 %, traces = P = 0.0200 %, traces = Ti = 0.05 %, traces = Zr = 0.05 %, traces = Nb = 0.08 %, traces = N = 0.040 %, 10 P + As + 5 Sb + 4 Sn = 0.21 %, traces = O = 30ppm, the remainder being iron and inevitable impurities. The invention also relates to a part produced from said steel, to the method for the production thereof, and to the use of the same.