Y4 Hot Work Tool Steel
- fucheng steel
- China
- 1 Month
- 2000 Tons/Month
Y4 steel has high thermal strength and thermal stability, good toughness, thermal conductivity, process performance and good forging performance.
Y4 steel is a heat-resistant die steel for making die-casting die. In the environment of use, it should bear high temperature, high pressure and high impact.
Y4 TOOL STEEL
| Smelting and Manufacture Method: | LF+VD+Forged |
| Delivery Condition: | Annealed |
| Delivery hardness： | ≤230 HBS |
| UT Test Standard: | Sep 1921-84 Class3 D/d,E/e |
Y4 STEEL GRADE COMPARISON AND CHEMICAL COMPOSITION COMPARISON
| Standard/Steel Grade | Chemical Composition(%) | |||||||||
| C | Si | Mn | Cr | Mo | V | Nb | B | |||
| GB | Y4/4Cr3Mo2MnVNbB | 0.36~0.42 | 0.25~0.50 | 0.90~1.30 | 2.20~2.70 | 2.00~2.50 | 0.90~1.30 | 0.04~0.10 | 0.002~0.006 | |
APPLICATION
Y4 tool steel is suitable for copper alloy, aluminum alloy die casting, medium and small press dies, hot extrusion dies, etc.
Y4 STEEL CHARACTERISTICS
Y4 steel, officially designated as 4Cr3Mo2MnVNbB, is a new type of hot work mold steel specifically designed for copper alloy die-casting molds in China. It is marked as the fourth steel used for die-casting molds, abbreviated as Y4.
It is worth mentioning that the addition of trace elements Nb and B can stabilize carbides and refine grains. The carbide of Nb is difficult to dissolve in austenite, so it can improve the stability of M6C and MC type carbides, reduce overheating sensitivity, and thus improve thermal strength and stability. These characteristics make Y4 steel significantly superior to 1.2581 steel in terms of mechanical properties, especially in terms of cold and hot fatigue and crack propagation rate. It is considered an ideal copper alloy die casting material and can significantly improve the service life of the mold.
The heat treatment process of Y4 steel is relatively simple, usually using quenching and high-temperature tempering treatment. The quenching temperature is generally 1050-1100 ℃, oil cooled or air cooled; The tempering temperature is 550-650 ℃, and the holding time is determined according to the hardness requirements. After such heat treatment, Y4 steel can achieve high hardness, high strength, and good toughness.
In practical applications, the application range of Y4 steel is very wide. Due to its good high-temperature strength and wear resistance, it is often used to manufacture molds that need to withstand higher temperatures and pressures. For example, Y4 steel is widely used in non-ferrous metal die-casting molds such as aluminum, magnesium, and zinc. In addition, Y4 steel is widely used in manufacturing fields such as plastic molds, hot forging forming molds, and cold stamping molds. In these fields, Y4 steel has fully demonstrated its advantages of high strength, high wear resistance, and high toughness.
In addition to the field of mold manufacturing, Y4 steel can also be applied in other fields. For example, in the mechanical manufacturing industry, Y4 steel can be used to manufacture high-speed cutting tools, gears, bearings and other components; In the aerospace field, Y4 steel can be used to manufacture high-temperature components such as engine turbine discs and blades; In the field of electronics and electrical appliances, Y4 steel can be used in the manufacturing process of switch housings, electric iron soleplates, etc. These products all need to withstand high temperatures and pressures, so the requirements for mold materials are also very high. The high-temperature strength and wear resistance of Y4 steel can ensure the stability and safety of these products during use.
Y4 steel is a mold steel that not only has good toughness and high-temperature fatigue resistance, but also can withstand temperature fusion, suitable for long-term operation at high temperatures. At the same time, it also has good cutting performance and polishing performance. These characteristics make Y4 steel one of the most widely used hot work mold steels at present.
