DIN 1.2738 steel is a high-quality plastic mold steel with high hardness and high strength. The difference in chemical composition between it and 1.2311 steel lies in the Ni element. The addition of Ni alloy elements in 1.2738 makes it have higher hardness and better corrosion resistance. 1.2738 steel is widely used in mold making and plastic injection molding industry, and is one of the indispensable materials in many industrial fields.
Die steel 1.2738 equivalent grade:
The chemical composition of AISI P20+Ni / DIN 1.2738 steel is mainly composed of carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel and molybdenum. The content of nickel and molybdenum is relatively high. Nickel can improve the toughness and strength of the material, and molybdenum can improve its hardness and wear resistance. In addition, the content of chromium is low, and its main function is to improve the corrosion resistance and hardness of the material.
Die steel 1.2738 is a tool steel with excellent properties and unique characteristics. Its special chemical composition and heat treatment process endow it with excellent mechanical properties and mechanical properties. Its main performance is as follows:
1.High hardness: Through the heat treatment process, the hardness of 1.2738 steel is further improved, and the hardness of the delivery state can reach 32-36HRC. This makes it ideal for making durable molds and tools.
2.Easy cutting performance: The steel has good grinding performance, can be used for cutting and grinding, and is easy to process parts with complex shapes, and can adapt to mold processing requirements of different shapes and precision.
3. Good processing performance: 1.2738 can obtain good polishing surface quality and corrosion resistance and wear resistance processing performance due to the use of ESR technology, which is convenient for welding, cutting, milling, drilling and other processing operations. And it can maintain its excellent performance and precision during processing.
4.High strength and high toughness: 1.2738 steel has excellent tensile strength and yield strength, which makes it have high strength and high toughness, can withstand high pressure and heavy load working environment, and can maintain shape and performance under impact or extrusion.
5.Good wear resistance: 1.2738 with higher hardness has better wear resistance, and surface treatment such as spraying and plating can increase the toughness and wear resistance of the 1.2738 surface.
GB 3Cr2MnNiMo / ASTM P20+Ni / DIN 1.2738 steel is widely used in various mold manufacturing due to its outstanding properties, such as plastic molds, die-casting molds, hot-pressing molds, cold heading molds, etc. It is also used in the manufacture of mechanical parts, heavy equipment, medical equipment, bearings, pipes, gears, chemical equipment, home appliance housings, etc. And with the advancement of science and technology and the innovation of industrial design, the application fields of 1.2738 steel are also expanding. For example, it is used to make high-end musical instruments, such as violins, guitars, etc., providing musicians with better performance tools.
The material obtains better performance through its heat treatment process. The 1.2738 is quenched and tempered at low temperature to improve the hardness performance. It can also be nitrided and flame hardened to increase the high hardness, high strength, corrosion resistance and wear resistance of the mold steel surface. During the tempering process, the brittleness of the steel is reduced and the toughness is improved by keeping the temperature at an appropriate temperature for a period of time and then cooling. The choice of tempering temperature and time will affect the hardness, strength and toughness of the steel.
（1）The supply state of 1.2738 die steel is generally hot rolled or forged. Its supply specifications include plates, round steel, square steel, etc.;
（2）1.2738 supply hardness is 280-325HBW;
（3）Surface treatment: black surface, rough machining, peeled and turned or as given requirements.
Price: Since Ni is a rare metal, the prices of 1.2738 and P20+Ni are higher than those of P20 or P20+S after adding Ni element. Generally speaking, the price difference is around 250~300USD/TON.
Through the in-depth understanding of the 1.2738 material chemical composition, performance, application, heat treatment and other information, it can be seen that the DIN 1.2738 is a multifunctional steel with excellent performance, and is very popular in domestic and foreign markets. With the increasing demand for high-performance molds in the market, this steel is expected to gain greater development space and application prospects.
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