热挤压、热冲压、压力浇铸等在少、无切削加工工艺中占有重要地位,这些高效、先进的生产工艺要有高质量和高寿命的热作模具来保证。因此一些先进国家如美国、英国、日本和西德等,对热作模具材料的发展非常重视,广泛采用5％Cr类钢种,如:3Cr3Mo3V(H10)、4Cr5 MoVSi(H11) Hot extrusion, hot stamping, pressure casting in less, no cutting process occupies an important position, these efficient, advanced production processes to have high quality and high life hot die to ensure. Therefore, some advanced countries, such as the United States, Britain, Japan and West Germany, attach great importance to the development of hot die materials and widely use 5% Cr steel grades such as 3Cr3Mo3V (H10) and 4Cr5 MoVSi (H11)