ASSAB high hardness toughness of plastic mold steel 


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 NIMAX is a combination of high hardness, high toughness, the new plastic mold steel, making molds with good resistance to deformation, to avoid the mold of non-normal failure. Ensure safe and reliable mold using a relatively long life. Reduce polishing costs, get a better finish. 
 NIMAX features 
 NimAx plastic mold is a low-carbon steel, factory hardness of about ~ 40 HRC. 
 NimAx the following features: 
 Good machinability; excellent welding performance; good polishing and striae performance; good resistance to deformation properties; high impact toughness and fracture toughness; uniform cross-section and properties; good machining and welding performance, not need to warm-up and follow-up treatment, reduce the molding cycle and make it easier for mold maintenance. High hardness combined with high toughness, good resistance to deformation of the mold has the ability to avoid failure of non-normal mold, the mold to ensure safe, reliable and long life. 
 NIMAX the chemical composition 
 Chemical composition% C Si Mn Cr Mo Ni 
 0.10 0.30 2.50 3.00 0.30 1.00 
 Standard control without 
 Factory state 360 ??~ 400HB 

 NIMAX application 
 NimAx suitable for making different types of plastic molds, he has good processing properties and toughness, is also suitable for many engineering support material. 
 Applications: 
 Injection mold: packaging industry, different types of containers; automotive industry, large internal parts, mirrors; applications, panels and handles. 
 Forging and die casting mold mold base material 
 Cutting tools, clamping material 
 Hot runner manifold 
 Structural parts 
 NIMAX performance 
 Physical properties: hardness ~ 375HB. 
 Temperature of 20 ℃ 200 ℃ 
 Density kg/m3 7900 - 
 Modulus MPa 205000 - 
 Coefficient of thermal expansion / ℃ from 20 ℃ - 12.4 × 10-6 
 Thermal conductivity W / m ℃ - 26 
 Specific heat J / kg ℃ 460 - 

 Mechanical properties 
 Unless otherwise specified, samples taken from the cross-section dimensions of 596 x296 mm of the center of the sheet; different mechanical properties of the measured value depends on the size of the original aniseed, sampling location, orientation, and hardness and test temperature. 
 V-notch impact toughness 
 Cross-section sample. 
 High impact toughness decreases the risk of cracking the mold, the mold used to improve security. 
 Tensile strength: hardness ~ 370HB. 
 Yield strength, Rp0.2 785MPa 
 Tensile strength, Rm 1265MPa 
 Elongation, A5 11% 
 Reduction of, Z 47% 

 Compressive strength: the hardness ~ 370HB. 
 Compressive strength, Rc0.2 = 1000MPa. 
 NIMAX heat treatment 
 NiMAX recommended supplier status to use, its hardness can not be heat treated to improve follow-up, but through the tempering reduced. The tempering material is not recommended to do, because even though tempering can reduce the hardness of the material, but also reduces the material's toughness.