Austrian "Bluff" brand high-quality mold steel 
 Magnesium alloy die steel 
 BOHLER W400 VMR 
 Thermal fatigue is the cause of the vast majority of die-casting mold shortened life or failure of the main reasons. In order to prevent or delay the thermal fatigue, so the mold even better performance, BOHLER particularly developed best of W400VMR to. 
 Has been tested and proved the toughness of W400VMR can reach 15ft-1bs, NADCA (20 797) standard 8ft-1bs. W400VMR has reached more than twice the standard. 
 Main components: 

 C 
 Si 
 Mn 
 Cr 
 Mo 
 V 

 0.39 
 0.20 
 0.30 
 5.20 
 1.40 
 0.95 


 Advantages: 
 Steel smelting has been vacuum remelting method, with the reunification of high purity, very low carbide high toughness, with the the VMR vacuum remelting smelting early aviation industry materials for the torch system, the VMR smelting, can improve The organization of the steel itself, improve the impact strength, heat, tensile properties, hardness and increase toughness, improve polishing performance, highly anti-magnesium aluminum alloy corrosion.