... resisitence, thermal fatigue properties and wear resistance. Belong to its high queching degree, h13 has very small heat treatment deformation ... so on, also widely used in aluminum, copper and its alloys of die-casting molds.Specification:Round(dia 50-230mm) Flat ... and excellent cutting as well as polishing nature to ensure its long usage.Good thermal fatigue characteristic. After 3000times cold and ...