plastic mold steel
We must first know some of the basic injection mold knowledge before talking about plastic mold steel, first of all, the classification of plastic mold are generally is on the length of plastic mold by 5 grades, over a million times grade 1;grade 2:500,000-100 million;grade 3 :from 300,000 to 500,000;grade4:from 100,000 to 300,000, grade 5: 10 million below Grade1 and 2 need mold stell hardness after heat-treatment reaching around HRC50 , or plastic which is easy to wear, could violate the tolerance, so we should select steel heat afetr treatment showing better performance, but also at high hardness of the state has good cutting performance, of course, There are other considerations. I seldom come into contact with Chinese-made plastic mold steel, it can only introduce commonly used in the Pearl River Delta for imported raw materials. Usually chosen in Sweden 8407, S136, U.S. 420, H13, Europe, 2316,2344,083, or Japan SKD61, DC53 (the original mold for the metal material, the use of s...