8407 ▲ Sweden "Assab" hot die casting mold steel 
 Main ingredients (%) C, C: 0.38; Si silicon: 1.0; Mn Mn: 0.4; Cr chromium: 5.3; Mo Mo: 1.3; V-vanadium: 0.9 
 Factory state annealing, HB ≤ 180 
 Steel the characteristics of the steel is clean and uniform, well-structured, with 300 tons of press forging, high impact strength, ultrasonic inspection, surface black processed creators In addition, high material utilization, and can reduce processing costs, the best red hard and good toughness. 
 ??? Transit system zinc, aluminum, tin and other non-ferrous alloy and copper alloy die-casting mold, or jack Tsui, the extrusion axis, can be used as hot forging or stamping mold, can be used for advanced permanent production of plastic mold and quenched .