Complete specifications the Material M300 pre Yingkang corrosion glossy plastic mold steel 

 Origin / manufacturers MMK 


 Austria, the GRADE AND STEEL, the M300 BOHLER HIGH "Bluff" brand pre Yingkang corrosion glossy plastic mold steel 
 Main ingredients (%) C, carbon Mn Cr NO Molybdenum Nickel S sulfur 
 0.38 0.65 16.00 1.00 0.80 0.40 

 Factory state pre-hardened to 1000-1100N/mm2 (31-35HRC). 
 31-35HRC steel the characteristics of this steel after heat treatment, processing, and to polish easy composition of this steel chromium 16%, with excellent corrosion resistance, especially PVC products, and even more effective, and easy to a mirror finish. 
 Use for all chemicals in contact with the plastic mold, transparent plastic products, or mold erosion articles. 
 Forged 1050 ℃ began forging to 850 ℃ melted down and slow cooling with the furnace. 
 Tempering at 600-700 ° C or 170-210 ℃. Be immediately tempered after hardening. At least 2 to 2.5 hours. 
 Quenching from 1000-1050 ℃ oil or air cooling. 
 Annealing of 800-850 ℃ air cooling or furnace cooling to 600 ° C, hardness up to 285HB.