The patented steel of Japan Daido Steel Co., Ltd. - NAK80 is a pre-hardened plastic mold steel. The factory hardness can reach HRC37-43. It has good polishing performance and carving properties, and good electrical discharge machinability. It is used in Mirror polished molds, electric discharge machining molds for automobile parts, thin plates with a thickness of no more than 2MM, high-efficiency blanking dies, punching dies and stamping dies, various scissors, inlaid blades, woodworking blades, thread rolling dies and wear-resistant sliders, Cold heading dies, thermosetting resin molding dies, deep drawing molds, cold extrusion dies. Carbon C: 0.06～0.20
Silicon Si: ≤0.35
Manganese Mn: 1.40-1.70
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Aluminum Al: 0.70-1.30
Nickel Ni: 2.80-3.40
Copper Cu: 0.80-1.20
Molybdenum Mo: 0.20-0.50 1. Has good polishing performance.
2. Excellent carving and good discharge performance.
3. It has good weldability. ●No need for heat treatment, excellent polishing properties, good machinability and corrosion resistance;
●The steel is pure after vacuum degassing and refining treatment;