塑料模具鋼Cr12Mov這是在塑料行業快速的發展下產生的物品，對于精度的要求是越來越高了，性能也在一步步的要求完美，尺寸的需求也更多了。
      塑料模(mo)具用鋼要求具有一定(ding)的強度(du)、硬(ying)度(du)、耐(nai)磨性(xing)(xing)(xing)(xing)(xing)、熱穩定(ding)性(xing)(xing)(xing)(xing)(xing)和(he)耐(nai)蝕性(xing)(xing)(xing)(xing)(xing)等(deng)性(xing)(xing)(xing)(xing)(xing)能。此外，還要求具有良好的工(gong)(gong)藝性(xing)(xing)(xing)(xing)(xing)，如熱處理變形(xing)小、加工(gong)(gong)性(xing)(xing)(xing)(xing)(xing)能好、耐(nai)蝕性(xing)(xing)(xing)(xing)(xing)好、研磨和(he)拋光性(xing)(xing)(xing)(xing)(xing)能好、補(bu)焊(han)性(xing)(xing)(xing)(xing)(xing)能好、粗糙度(du)高(gao)、導熱性(xing)(xing)(xing)(xing)(xing)好和(he)工(gong)(gong)作(zuo)(zuo)條件尺(chi)寸和(he)形(xing)狀穩定(ding)等(deng)。一般(ban)情況(kuang)下，注射成(cheng)形(xing)或(huo)擠壓(ya)成(cheng)形(xing)模(mo)具可選用熱作(zuo)(zuo)模(mo)具鋼；熱固性(xing)(xing)(xing)(xing)(xing)成(cheng)形(xing)和(he)要求高(gao)耐(nai)磨、高(gao)強度(du)的模(mo)具可選用冷作(zuo)(zuo)模(mo)具鋼。