| Letter or abbreviation |
Grade Profile |
| CG - 2 |
Hot work, cold work die steel used along with the Shanghai Iron and Steel Research Institute, Guiyang steel pre-production. The steel hasexcellent strength and toughness, wear resistance and thermal fatigue resistance, and so on, can instead of 3Cr2W8V steel. CG - 2 steel can also nitrogen carbon permeation (soft nitriding) processing, in order to strengthen its performance, increase die life |
| CH95 |
Has good heat resistance of hot work die steel, developed by Shanghai Jiaotong University School of Mechanical Engineering. The steel is mainlyused for the precision forging die |
| ER8 |
Empty cold-hardened hot work die steel, Shanghai Material Research Institute. The steel is selling in the European the QR080 mold steel on the basis of improved development of new steel, with good heat resistance , hot hardness, wear resistance and high impact toughness and resistance to thermal fatigue resistance, and has high anti - thermal vibration |
| GR |
Has good heat resistance of hot work die steel materials developed by the Institute in Shanghai. The steel is mainly used for hot forging die machining high temperature alloys, such as hot upset forging dies, thermal dies, hot extrusion die |
| HD ( HD2 ) |
Martensitic hot work mold steel, Huazhong University of Science and other development. The HD2 Steel is the HD steel, keep the HD steel high-strength conditions, to further improve the toughness to get a good room temperature and high temperature mechanical properties and good thermal stability and process performance, applicable to perforated brass hot extrusion needle |
| HM - 1 |
The high strength and toughness of hot work die steel, Beijing Institute of Electrical and Shougang steel company has developed. The steel is to refer to international standards to IS0 4 957, 30CrMo3 steel and the British BS 4659, and improved steel with high strength and toughness and resistance to thermal fatigue, good thermal stability. HM - 1 steel has satisfied the standard, see GB/T1299 - 2000 , 3Cr3M03W2V |
| HM - 3 |
The high strength and toughness of hot work die steel, Beijing Institute of Electrical and development. The steel is the reference to the United States ( AISI ) H10, steel, and Russia ( TOCT ) 3 х 3 М Ф steel improve steel, HM - similar. HM - 3 steel added to Nb from |
| JCD |
Cast Hot Work Die Steel, Jilin University of Technology developed. The steel has good overall performance, its resistance to thermal fatigue, temper resistance and thermal stability of all than 5CrMnMo steel. Die, do not change forging, high material utilization. However, the steeldescribed in the literature on the chemical composition range is too wide, the impact of promotion |
| RM2 |
Hot extrusion die steel, Beijing Institute of Electrical and Mechanical Services, First Automobile Works developed. The steel instead of3Cr2W8V steel mold life can be increased several times. RM2 steel has satisfied the standard, see GB of / T 1299 - 2000 , 5Cr4W5M02V |
| Y4 |
Mainly used for copper alloy die-casting mold, and also be used for small and medium-sized presses mold and hot extrusion die. The steel wasdeveloped by the Shanghai Institute of Materials, Y is a die-casting of the "pressure" ( Ya ) Pinyin prefix of the word, Y4 , said casting mold steel 4 . The steel has high heat resistance and thermal stability, and good toughness, thermal conductivity, and process performance |
| Y10 |
Aluminum alloy die-casting mold steel, Materials Research Institute, Y10 , said die-casting mold of steel 10 . with 30r2W8V steel, the steel with anti-thermal fatigue property, heat deformation small, anti-aluminum solution loss performance advantages |
| ZDM - 2 |
Casting forging die steel, Wuhan Institute of mechanical processes, such as units of development. The steel has good hardenability, high tempering stability, good resistance to thermal fatigue performance and wear resistance; its tensile strength and high fracture toughness at room temperature, but the impact toughness is poor, when heated to200 ℃, a K value significantly increased. For ceramic fine mold with |
| 5NiSCa |
The development of pre-hardening cutting plastic mold steel, Huazhong University of Science and other units. The steel S - Ca complex elements to improve machinability, good mirror polishing, suitable for the manufacture of large-scale thermal plastic injection mold. The pre-hardened hardness 35 ~~ 45HRC . in the aforementioned JB / T 6057 documents |
