| Letter or abbreviation |
Grade Profile |
| 65Nb |
Matrix steel cold work die steel of high strength and toughness, Huazhong University of Science and other types of units developed. The average carbon content of steel for the ω ( C ) 0.65 %, had steel 65Cr4W3Mo2VNb said, it is referred to 65Nb in order to highlight its carbon content and the Nb content features. The steel has satisfied the standard, see GB of / T 1299 - 2000 , 6Cr4W3Mo2VNb |
| 6W6 |
The development of low-carbon high-speed steel for cold work die steel, Iron and Steel Research Institute, Daye steel mills and other units. The 6W6 steel more commonly used6-5-4-2 high-speed steel ( of W6Mo5Cr4V2 ) carbon and vanadium content were low, high toughness, mainly used in steel cold extrusion dies. Steel satisfied marked, see GB / T 1299 - 2000 , 6W6Mo5Cr4V |
| 8Cr2S |
Cutting precision cold work and plastic mold used along with the new die steel, Huazhong University of Science and Technology, Shougang steel companies, the development unit. The steel multicomponent alloys, good hardenability, heat deformation small, low alloy content, the economy is good; improve the sulfur content to improve the machinability of its characteristics. in the die steel and heat treatment technology conditions "(JB / T 6 058 ) recommended that steel |
| CH - 1 |
Flame hardening type cold work die steel, Shougang steel company developed. CH-1 steel has good hardenability, quenching temperature can 100 to 150℃, can obtain better mechanical properties and surface hardness after quenching, after quenching the workpiece heat treatment distortion. Steel satisfied marked, see GB / T 1299 - 2000 , 7CrSiMnMoV |
| ER5 |
High-chromium cold work die steel, Materials Research Institute in Shanghai. The steel with high wear resistance and high impact toughness |
| GD |
Low-alloy cold-working die steel, high strength and toughness to take the "high low" ( Gao , Di ) two Pinyin prefix for its code, developed by Huazhong University of Science and Technology. GD steel similar to the U.S. ( ASTM ), L6 , Russia (Г OCT ) 7 ХГ ВМФ and Germany ( DLN )75CrMoNiW6 - 7 and other conditions in the die steel and heat treatment technology "( JB / T 6058 ), file recommended by the steel |
| GM |
High wear resistance of cold work die steel, take the "high grinding" ( Gao , Mo ) two Chinese Pinyin prefix to develop their code, Huazhong University of Science. GM steel, ERS steel are the same type with high hardness, close to the high-speed steel, better than the high- Cr steel and the base steel; impact toughness than the high-speed steel and high- Cr steel |
| ICS |
High wear resistance of cold work die steel, Shanghai Iron and Steel Research Institute. ICS steel, high hardness, good wear resistance, excellent anti-Indian. For reprint molds for |
| LD ( LD - 1 ) |
Cold work die steel of high strength and toughness, its uses to take the "cold heading" Leng, Dun and two Chinese Pinyin prefix the development of its code, Shanghai Institute of Materials. LD of the original series of steel sub- LD - LD - 2 ... but in the practical application of the LD - 1 is the best, the rest did not promote the use of, it is still LD code. Maintain high toughness of the steel , its compressive strength, flexural strength, abrasion resistance compared 65Nb excellent, in the above JB / T 6 058 documents |
| LD - 2 |
Is LD series of steel, Shanghai Material Research Institute. The steel is the LD-1 steel , for the type of substrate steel mold steel, abrasion resistance, also used as a plastic mold steel |
| 012Al |
Type of substrate steel hot work die steel, Guiyang steel mills developed. added to the steel to improve the toughness and ductility, thermal fatigue performance than 3Cr2W8V steel. 012Al steel has satisfied that standard, see GB / T 1299 - 2000 , 5Cr4Mo3SiMnVAl |
| 50Nb |
Hot extrusion mold steel, Huazhong University of Science and other units developed. It is the same type of the 50Si steel ( 5Cr4W3M02VSi ) changeinto the type, in order to highlight Nb and name. 50Nb steel with high hardenability and thermal stability than 3Cr2W8V better performance |
