ORVAR/8402/8407 is the use of special steel-making technology and strict quality control and organization to get high purity fine steel, 8407 of isotropic (isotropic) than the conventional refining system H13 better. This mold resistance to mechanical fatigue and thermal stress fatigue properties more valuable, such as die-casting mold, forging mold and extrusion mold. Therefore, the use of mold hardness comparable 8407 to provide 1-2HRC Putuo H13 without sacrificing toughness. High hardness can slow the occurrence of thermal cracking, provide die life. Its advantages are as follows:
1 excellent resistance to thermal shock and cracking capacity;
(2) high-temperature strength;
3 large or small size, high toughness and ductility, and isotropic;
4 processing and polishing of fine;
5 Excellent hardenability;
6 good thermal dimensional stability.
ORVAR/8402/8407 chemical composition:
C: 0.39 Cr: 5.2 Mo: 1.4 V: 0.9 Si: 1.0
ORVAR/8402/8407 purposes:
Metal die casting, extrusion dies, high-volume production of thermoplastic injection molding, thermoset plastic surface requires high mold, ring mold (for example: for fastening metal mold) and wear-resistant parts, etc.
