What is AISI 4140 Steel
AISI 4140 alloy steel round bar sheet plate belongs to medium hardenability steel.AISI 4140 steel has high fatigue strength and low notch sensitivity. Low-temperature impact toughness is also very high, no obvious temper brittleness. AISI 4140 steel round bar is mainly used after quenching and tempering state. it is used to manufacture high-strength parts under impact loads and the fittings with large cross-sections and other stressed members. Such as the horizontal eccentric shaft of the horizontal forging machine, the crankshaft of the forging press, and etc.
Its equivalent grade is JIS SCM440 and DIN 1.7225. The properties and composition of 4140 steel round bar sheet plate as below.
We have been specializing in the production of 4140 alloy steel for decades, providing 4140/1.7225/SCM440 alloy round bar, square and flat steel, etc. We have our own cutting and processing facilities, rich production experience, and the specifications can be customized according to your needs Requires tailoring and customization. Over the years, we have been focusing on special steel dealers and suppliers with high-quality booths. As a professional AISI 4140 steel supplier, you are welcome to inquire at any time.
specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc
D2 steel round bar and plate can be used to produce cold work mold with a large cross-section, complex shape, high impact force, and high wear resistance. It also is called DIN 1.2379 and JIS SKD11 steel. It is a high-carbon and high-chromium cold work mold steel. It is widely used in the world. It has high hardenability and the high-temperature oxidation resistance is good. The anti-corrosion ability is good after quenching and polishing, and the deformation is small after the steel heat treatment.
D2 Steel Application
1.2379 steel is used for blanking or forming dies, thread rolling dies, shear knives, food-processing knives, gauges, punches and etc.
AISI D2 Steel Round Bar Plate Sheet Supply
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. Please contact us for any request of D2/1.2379 steels materials. Songshun Steel always with you.
Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!!
Heat Treatment
DIN 1.2379 steels alloy should be preheated very slowly to 815 (1500 F) and the temperature can be increased to 1010oC (1850 F). Then held at 1010oC (1850 F) for 20 to 45 minutes and air-cooled (air quenched).
Annealing
Annealing of 1.2379 tool steels material should be done at 871 to 898 C (1600 to 1650 F) followed by slow furnace cooling at 4.4 C (40 F) per hour or less, after which cooling rate could be increased. At the same time, must do something to prevent excessive carburization or decarburization.
Stress Relieving
Heat it slowly to 1050 -1250 F, allow to equalize, and then cool in still air(Strain Relieving)
Preheat Prior To Hardening
Preheat slowly to 1350 -1450 F and hold at this temperature until steel 1.2379 steel material is uniformly heated.
Hardening
After thorough preheating, heat to 1800 -1850 F. Hold it at the hardening temperature until it is completely and uniformly heated.
Quenching
DIN 1.2379 steel tool material is an air hardening steel and will develop hardness on cooling in still air. To avoid scaling and prevent decarburization on the surface, controlled atmosphere or vacuum furnaces are recommended. Parts should be allowed to cool to 150F, or to where they can be held in the bare hand, and then temper immediately.
Tempering
The tempering temperature on material 1.2379 steel may be varied according to the desired hardness. 1.2379 steels can be tempered at 204 C (400 F) for achieving Rockwell C hardness of 61 and at 537 °C (1000 F) for a Rockwell C hardness of 54.
Compare
Chinese Cr12Mo1V1 steel, American D2 steel, Japanese SKD11 steel, the chemical composition of them is the same, but the performance is very different. After heat treatment, the color of Cr12Mo1V1 is a little orange-red, and the deformation would be large. It is easy to fracture during use. And the hardness of D2 steel is higher than SKD11 steel, but the toughness is not better than SKD11 steel. SKD11 steel is light and smooth, with the best overall performance.
D2 Steel Forging
Heating for forging of AISI D2 tool steel should be done slowly and uniformly. Soak through at 1850 -1950 F and reheat as often as necessary, stopping work when the temperature drops below 1700 F(926 C). After D2 mold steel forging, cool slowly in lime, mica, dry ashes or furnace. D2 steel should always be annealed after forging.
Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a
D3 steel also knows as DIN 1.2080 and JIS SKD1, which is a 12% chrome alloy steel. JIS SKD1 steel has very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable.
D3 Steel Application
1.Highly stressed cutting
2.Punching tools for thin sheet
3.Blanking and forming dies
4.Forming rolls
5.Drawing and deep drawing tools
6.Slitting Knife
7.Stone processing tools
8.Pressure pads
9.Thermosetting plastic molding
D3 Steel Round Bar Sheet Plate Heat Treatment
Heat Treatment
SKD1 steel requires hardening and tempering to achieve maximum properties. For maximum accuracy, the parts of SKD1 tool steel should be stress relieved after roughing operations. Stress should be relieved at 648 C (1200 F) for one hour and cooled slowly.
Annealing
Annealing of SKD1 steel needs to be done in a controlled atmosphere furnace. D3 steels should be heated thoroughly to 871 C (1600 F) and cooled slowly at a rate of not more than -6 C (20 F) per hour, until the furnace is black. Then the material should be removed and air cooled.
Tempering
The SKD1 steel should be cooled to room temperature and should be tempered immediately. The parts should be placed in the tempering furnace and increased slowly to the desired tempering temperature. Tempering for 1 hour per inch of thickness is required.
Hardening
SKD1 steel should be heated properly since it is very sensitive to overheating and if not heated maximum hardness cannot be achieved. The work should be directly placed in a furnace preheated to 954 C (1750 F) and soaked for 20-25 minutes, plus 5 minutes per inch of thickness, and then oil-quenched to harden it.
Notice
Other specifications are determined by daily stock. Customization is also acceptable.
We are a professional special steel stockist and supplier with a high-quality stand for many years. Please contact us for any request of D3 tool steels materials. Songshun Steel always with you.
D6 steel is a high-carbon, high chromium tool steel alloyed with tungsten that is characterized by high compressive strength, high wear resistance, high surface hardness and good hardening stability. It is also called SKD2 steel and DIN 1.2436 steel. And D6 steel chemical composition and heat treatment information are below.
Tool steels are primarily used to manufacture tools that can be used for machining metals, woods, and plastics. They are generally ingot-cast wrought products, and have the potential to be stable at elevated temperatures and withstand high specific loads.
D6 Steel Application
SKD2 steel chemical composition makes it become good tool steel in the industry. SKD2 steel is used for forming tools; molds for abrasive plastics and ceramics; long-run press tools; blanking and shearing tools for hard materials; stamping tools; scraping tools and etc.
D6 Steel Round Bar Sheet Plate Heat Treatment
Forging
SKD2 tool steel is heated slowly and uniformly to 700�°C (1292�°F) and then more rapidly to 900-1050�°C (1652-1922�°F).
Annealing
SKD2 tool steel is then annealed at 800-840�°C (1472-1544�°F) and cooled. Hardness of the steel after annealing will be approximately 225 Brinell.
Stress Relieving
Stresses from SKD2 tool steel can be eliminated before hardening by heating up to 650-700�°C (1202-1292�°F), if machining operations have been heavy. The steel is then allowed to cool slowly.
Hardening
SKD2 steel is pre-heated slowly to 750-800�°C (1382-1472�°F) and thoroughly soaked. Heating is then continued till the final hardening of 950-980�°C (1742-1796�°F), followed by air or oil quenching.
Tempering
The SKD2 steel is heated uniformly and thoroughly at the selected tempering temperature. Double tempering can also be carried out with intermediate cooling to room temperature.
Notice
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. Please contact us for any request of D6/SKD2 steels materials. Songshun Steel always with you.
O1 steel also is called DIN 1.2510 and JIS SKS3 steel. High content for manganese, chromium and tungsten in 1.2510 steel composition, that could increase the hardening ability. Then the steel does not need to undergo water quenching. After oil cooling and quenching, the hardness could reach 62HRC. O1 tool steel round bar sheet plate was used widely as a cold work mold steel. It is a great material for the blade, metal molds and etc.
O1 Steel Application
1.2510 steel is used as a material of tough parts. Such as punches, knock-out pins, cams, and of course, knife blades. And 1.2510 steel is mainly used for short-run tooling for cold forming dies, blanking dies, and cutting tools operating at ambient temperature. Typical applications for O1 tool steel are blanking, forming, and trim dies, gages, slitting cutters and etc.
Notice
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. Please contact us for any request of O1/1.2510 steels materials. Songshun Steel always with you.
Dongguan Songshun Mould Steel Co., LTD which is an industrial and trading company with 3500-7000ts hydraulic forging machine. We provide a great variety of steels, competitive price with good quality and keep the large stock are over 20000 tons.
AISI O2 steel also can be called JIS SKS31 and DIN 1.2842 steel. It is the better type compare with the O1 tool steel. Its content of carbon, chromium and tungsten has been raised. So it has a higher hardenability characteristic, the deformation is small during the quenching. It is a low alloy tool steel which is better than carbon steel at the point of the mechanical property. It has high hardness and wearing resistance. Because of the certain account of vanadium element, the crystal grain is smaller then decrease the overheating sensitivity of the steel. At the meantime, the carbide is getting smaller and the distribution is uniformity.
O2 Steel Supply
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. As a professional O2 steel supplier, please contacts us for any request. Songshun Steel always with you.
What We Provide
Our main products are round and flat bars for alloy steel, tool steel, stainless steel, spring steel, bearing steel and etc. In those years we offers a wide range of high quality steel for engineering machinery, mold tooling, cutting tools manufacturing
A2 steel is called DIN 1.2363 and JIS SKD12 steel. 1.2363 steel is a cold work mold steel that is improved on the basis of SKD11 steel. The toughness of 1.2363 steel is twice that of SKD11. The retained austenite is almost all decomposed under the conventional heat treatment conditions. The toughness of 1.2363 steel is great in the cold work mold steel. There are no cracks of industrial products due to be made of A2 steel round bar sheet plate material.
A2 Steel Application
The application is decided by A2 steel chemical composition and properties. It has high hardness and toughness. The application as below:
Precision stamping die.
Precision blanking dies for wire cutting and stamping die for various purposes.
Cold forging, deep drawing and boring molds.
High-speed punching punch, stainless steel plate punch.
Shear and slitter blades.
A2 Steel Characteristics
1.High toughness. The products that were made of A2 steel material almost no cracking or cracking occurs during the use.
2.The machinability is also better than SKD11 steel. Using 1.2363 steel can increase the service life of the mold and get higher production efficiency.
3.High quench hardening ability. so it can efficiently avoid the defects which be caused by insufficient hardness during vacuum heat treatment.
4.The surface hardness is higher after surface hardening treatment. It can efficiently improve the performance of the mold.
Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!!
Plastic mold steel is an ideal material widely used in many industries, especially in the mold field. The plastic mold steel selected for the production of the mold has a direct impact on the quality and efficiency of the product. Therefore, when purchasing plastic mold steel material, multiple factors need to be considered in terms of product quality. It is very important to choose the best quality plastic mold suppliers, and Songshun steel will be your best choice. This article will explain in detail why you choose to buy plastic mold steel materials from Songshun Steel.
The Quality Of Plastic Mold Steel Material
Songshun Steel provides the highest quality plastic mold steel to ensure the performance of the product, which plays a key role in meeting the requirements of the manufactured product and improving its life. The following are the key points to consider when choosing plastic mold steel material.
(1) Wear resistance and corrosion resistance: Due to the frequent need to withstand continuous compression, friction, wear, and contact with chemical substances when manufacturing and using molds or other products, choosing plastic mold steel material with good wear resistance and high corrosion resistance, can extend the service life of the product, ensure its surface glossiness and accuracy, and prevent surface corrosion and damage.
(2) Hardness and toughness: Plastic mold steel has a certain hardness and sufficient toughness. A good balance between the two can ensure that the manufactured products are not easy to deform and avoid breakage or cracks during use.
(3) Machinability: plastic mold steel needs to have good machinability, easy to manufacture molds with complex shapes, and convenient for cutting, broaching, polishing, trimming, heat treatment and other process operations in the processing and manufacturing process. Therefore, the machinability of die steel is also an important consideration. Good cutting performance can ensure the precision and efficiency of mold processing.
In addition to the above performance points, plastic mold steel material also needs to have good thermal conductivity, stability, strength, and so on. These requirement must be ensured during the production process of Songshun steel, ensuring that the provided plastic mold steel has these properties and provides high-quality steel.
Mold steel is a material that is used to manufacture the molds, including cold-punching mould, hot forging die, die-casting mold, and more. The mold is the main processing tool for the industry of machinery manufacturing, motor, radiometers and etc. The quality of mold would directly impact the quality of processing technic, the precision and output of products and more. The properties and heat treatment of mold steel would make a huge impact on the quality of mold except for the good design of structural and processing precision. Its grades, specification and quality determine the properties, life and manufacturing period of die.
To sum up, these advantages of Songshun Steel are the important reasons for choosing to buy plastic mold steel material from Songshun Steel. If you want to purchase plastic mold steel, we can meet your needs in terms of quality, price, supply capacity, delivery, technology and service, and will be your best partner.
Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!!
1.6511 Steel Characteristics
1.It has great atmospheric corrosion resistance, fatigue resistance and strength.
2.Stay excellent toughness, wear resistance and fatigue strength after heat treated.
3.It is alloy steel with low carbon and high nickel. About the coating and softening for leather knife sheath, it is a great choice.
4.4340 alloy steel bar is used widely in the aerospace industry because of great strength.
4340 alloy steel is used to manufacture large and medium-sized plastic molds that require high strength and toughness. And it is used for making important quality controlling parts with good toughness, high strength, and large size, such as heavy machinery and high load shafts, dia of turbine shafts is larger than 250mm, helicopter rotor shafts, turbojet turbine shafts, blades, high-load transmission parts, crankshaft fasteners, gears and etc.
After nitriding, it also can be used to make important parts for special performance requirements. And it will be a great material for high strength and good plasticity parts after low-temperature tempering or isothermal quenching.
Forging of 4340 alloy steel:
4340 steel is first preheated up to 1150C 120C for forging until uniform temperature throughout the section
Do not forge below 850 C, 4340 has good forging characteristics, but care must be taken when cooling as the steel can easily crack. After the forging operation, the workpiece should be cooled as slowly as possible. It is recommended to cool in sand or dry lime etc.
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M42 Steel Grade Equivalent Chart
Standard ASTM A600-92a EN ISO 4957-1999 JIS G4403: 2006 ISO 4957-1999
Grades M42(t11342) HS 2-9-1-8 SKH59 HS 2-9-1-8
Delivery condition:In annealing (269HB), or after heat treatment (65.5-68.5HRC). Quality control 100% UT (Ultrasonic Testing), UT Standard is SEP 1921-84 C/c.
M42 Steel Chemical Composition
Stand C (%) Mn(%) P(%) S (%) Si (%) Cr (%) V(%) W(%) Mo(%) Co(%)
ASTM A600-92a 1.05-1.15 0.15-0.40 0.03 0.03 0.15-0.65 3.50-4.25 0.95-1.35 1.15-1.85 9.00-10.00 7.75-8.75
EN ISO 4957-1999 1.05-1.15 0.40 0.030 0.030 0.70 3.50-4.50 0.90-1.30 1.20-1.90 9.00-10.00 7.50-8.50
JIS G4403: 2006 1.05-1.15 0.40 0.030 0.030 0.70 3.50-4.50 0.90-1.30 1.20-1.90 9.00-10.00 7.50-8.50
ISO 4957-1999 1.05-1.15 0.40 0.030 0.030 0.70 3.50-4.50 0.90-1.30 1.20-1.90 9.00-10.00 7.50-8.50
M42 Steel Physical Properties
Physical properties Metric Imperial
Density 7.81 g/cm
1.3247 Steel Mechanical Properties
Mechanical properties Metric Imperial
Hardness, Rockwell C(oil quenched from 1204 C, 5 minutes) 64.3 64.3
Hardness, Rockwell C(oil quenched from 1177 C, 5 minutes) 65.5 65.5
