| 摘要 |
The invention relates to a primary material for plastic molds or a plastic mold per se with high use-hardness. In order to achieve a higher material hardness and improved fine-grain structure of the mold material as compared to the prior art according to EP 1 251 187 B1, it is provided according to the invention to temper a primary material or a mold with a composition in percent by weight of: C = 0.25 - 0.35 Si = 0.04 - 0.20 Mn = 1.00 - 2.00 Cr = 1.00 - 2.00 Ni = 0.30 - less than 0.90 Mo = 0.30 - 0.80 V = less than / equal to 0.20 Al = 0.01 - 0.03 N = 0.0025 - 0.0150 S = less than 0.15 Fe and manufacturing-specific impurities as the remainder to a hardness of higher than 340 HB. |
