How much is DH31 SUP die steel a kilogram

DH31-SUPER is also known as DH31-S die steel, is a new type of imported high-life hot work die steel, DH31-SUPER die steel has good toughness and high temperature fatigue resistance, can withstand temperature fusion, is suitable for long-term work at high temperature, and has good cutting performance and polishing performance. DH31-SUPER die steel is smelted by patented electric furnace, the steel quality is purer and the toughness is better, and it is suitable for making aluminum, zinc, copper alloy extrusion die, die-casting mold, hot forging die, hot shear blade, die-casting mold parts, steel and copper hot pressing die, cold forging die, etc.

The height of the ** is directly related to factors such as transportation distance, value-added tax, processing, payment cycle and single batch quantity, so it is accurate to have accurate parameters, authentic Japan imported DH31-S die steel ** can not be less than 75 yuan a kilogram, on the contrary, it is necessary to buy cautiously.

Characteristics of DH31-S:

1.Very good hardenability, especially for large molds (relative to SKD61).

2.Extremely good resistance to heat fatigue cracking (relative to SKD61).

3.Good heat melt loss resistance (relative to SKD61).

4.The machinability is slightly lower than that of SKD61.

Uses of DH31-S:

HardnessHardnessHardnessAl ,MG Die Casting Mold 43 50HRC Hot Pressing Mold (Steel, Copper) 45 50HRC Die Casting Mold Parts (Injection Barrel, Injection Punch) 45 50HRC Hot Shear 40 50hrcal Hot Extrusion Die 45 50HRC Cold Forging Die 50 52HRC

Heat treatment: heat treatment conditions: ( ) hardness transition point ( ) annealing, quenching, tempering, annealing (HB), quenching and tempering (HRC) ACMS820 870 slow cooling 1000 1050 air cooling 550 650 air cooling 235 55-320

H13 die steel is the most widely used in China, and domestic large and small steelmaking manufacturers have produced H13. Because of the different production processes and production technologies, the quality of H13 die steel is also divided into several grades. The current H13 market** is between 15-50.

Of course, the choice of materials does not have to be expensive, combined with their own mold requirements to choose the most reasonable quality of the right materials.

The following is an introduction to H13 materials, and if you are interested, you can also learn about it.

Introduction of Fushun Special Steel H13 die steel materials

Fugang H13 die steel is an internationally used hot work die steel. It has good toughness and good thermal strength, thermal fatigue performance and certain wear resistance.

Fushun Special Steel H13 die steel corresponding grade

Fugang: FT413 China: 4Cr5MOSIV1 Germany: Japan: SKD61 USA: H13

Fushun Special Steel H13 die steel ** state

annealed, 259HB

Fushun Special Steel H13 die steel heat treatment process

1.The best H13 steel and die blank in the pre-heat treatment market have been annealed in the steel mill to ensure that they have good metallographic structure, appropriate hardness, good processability, and no need for annealing. However, after the reforging of the manufactory, the original structure and properties were destroyed, and the forging stress was increased, and it had to be re-annealed.

The isothermal spheroidization annealing process is: 860 890 heating and holding for 2h, cooling to 740 760 isothermal 4h, and the furnace cooling to about 500 is baked.

2.Quenching and tempering requirements for mold quenching process specifications with good toughness:

Heating temperature 1020 1050, oil cooling or air cooling, hardness 54 58HRC; It requires a hot hardness based mold quenching process specification, heating temperature 1050 1080, oil cooling, hardness 56 58HRC. Recommended tempering temperature: 530 560, hardness 48 52hrc; tempering temperature 560 580 ; Hardness 47 49hrc.

Tempering should be carried out twice. At 500 tempering, there is a tempering secondary hardening peak, and the tempering hardness is the highest, with a peak of about 55HRC, but the toughness is the worst. Therefore, the tempering process should avoid about 500.

According to the needs of the use of the mold, it is better to temper in the range of 540 620. Quenching heating should be preheated twice (600 650, 800 850) to reduce the thermal stress generated by the heating process.

3.If the chemical heat treatment of H13 steel is gas nitrided or nitrocarburized, the mold can be further strengthened, but its nitriding temperature should not be higher than the tempering temperature to ensure that the core strength is not reduced, so as to improve the service life of the mold.

H13 is an American brand, and it is called 4CR5MOSIV1 in China, but there is a world of difference between imported and domestic H13 in terms of performance, quality and quality.

All domestic companies or individuals with refining furnaces can open the furnace production, but the technology and quality and purity are very different, some small factories produce H13 basically can not be called H13, but cheap, if you need to use the characteristics of H13 to make molds or process products, do not be greedy for cheap.

The cheapest H13 die steel** is between 15-20, but it needs to be used with caution. Good H13 die steel** above 30.

H13 steel is hot work die steel. Implement the standard GB T1299-2000. Unified numerical code A20502; Grade: 4CR5MOSIV1; Alloy tool steel, referred to as Hegong steel, is a steel grade formed by adding alloying elements on the basis of carbon steel.

Chemical composition (%)

c：，si：，mn：，cr：，mo：，v：，p≤，s≤；UsesIt is used to manufacture forging dies with large impact loads, hot extrusion dies, and precision forging dies; Aluminum, copper and its alloys die-casting molds.

H13 is the American code, which varies greatly according to different manufacturers.

H13 is further divided into electric furnace steel and electroslag steel. Electroslag steel is some, 2-3,000 yuan a ton more expensive than that of electric furnaces.

Some small factories are below 18, and the quality is also the national standard, and the heat treatment is done, and there is no problem with it.

Then there are some large factory materials, ** retail sales are around 30.

If it is imported, Japan's is called SKD61, and Germany's is called, ** more than 2 times higher than that of domestic manufacturers.

H13 die steel is widely used by countries around the world due to its superior performance, and was first imported from the United States, which also belongs to the American brand, and then was imitated by various countries.

The best quality is the H13 from Fincola in the United States, and there are also many grades, collectively known as the DC-XTRA series, followed by the ORVAR series from Sweden, and then Germany and Japan.

In the early days of China's reform and opening up, there was no control over smelting, and there were many large and small steel mills, including many private small furnaces, so there were many domestic H13 brands and manufacturers, and the gap between the best and the quality of each brand was quite large. In addition, the ** of steel has a lot to do with the quantity, specifications, route, whether it includes tax, processing requirements, and electroslag and electric furnace you buy.

Based on the above, the ** range of H13 die steel is between 16 and 80 yuan, and Fencola's customized grade DC-XTRA steel, plus various taxes and fees will not be less than 80 yuan kg.

Fugang 40-60 yuan per kilogram.

H13 die steel has high hardenability and hot crack resistance, contains a high content of vanadium, has very good wear resistance, has good heat resistance, has good strength and hardness at higher temperatures, and has wear resistance and toughness, is an excellent hot work die steel.

H13 belongs to the United States, only the H13 imported from the United States is refined in accordance with the requirements and standards of AISI, the DC-XTRA of Fencola in the United States is the highest quality H13, similar materials in other regions have their own grades and standards, and the process and alloy composition are not exactly the same, so the ** and the quality, environment, and tolerance are not the same, and some ** are even higher than the H13 of the origin.

The H13 grade produced in China is 4Cr5MOSIV1, strictly speaking, it cannot be called H13, but it is just a customary name in the industry. In addition, H13 steel is divided into electroslag and electric furnace, ** is not the same, so the purchase of this material should be based on their own mold and workpiece requirements to choose the origin and brand and price, the current H13 ** range of 16 75 yuan kg, its Chinese production 4Cr5MOSIV1 ** range of about 16 35 yuan.

The price point is different for each place you are in**.