... time 1.2714 / 5CrNiMoV/L6/SKT4/5ChNM hot work tool steel description Chemical Composition(%): GradeCSiMnPSCrMoVNi1.27140.50-0.600.10 ... or QT. Properties :Cr-Ni-Mo alloyed hot work tool steel with high temperature impact toughness and thermal fatigue strength ... extrusion such as rams, bolsters, mandrels, plungers, sleeves, die holders, backing plates, chipping beds, press dies for mould parts, deep ...