SAE 4140 4150 4340 Alloy Steel Round Steel Bar
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
SAE 4140 4150 4340 Alloy Steel Round Steel Bar
Product Information:
1.Grade:SAE8620 SNCM220 805M20 4150 4140 4130 EN24 4340
2.Size: 12mm-300mm
3.Standard Performed: ASTM A29/A29M-04
4.Quality: AISI8620
Chemical Composition(%)
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| 8620 | 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | Max 0.035 | Max 0.035 | 0.40-0.60 | 0.40-0.70 | 0.15-0.25 |
Product Overviews:
| Product Name | Typical Grades | Diameter(mm) | Standard adopted |
| Carbon Steel | 20 (1020/S20C/C22) | Ø16-Ø300 | GB/SAE/JIS/DIN |
| 40 (1040/S40C/C40) | |||
| 45 (1045/S45C/C45) | |||
| Bearing Steel | GCr9 (51100/SUJ1) | Ø12-Ø250 | |
| GCr15 (52100/SUJ2/100Gr6) | |||
| GCr9SiMn (A485-Gr.1/SUJ3) | |||
| Cr-Mo Steel | 20Cr (5120/SCr420H/20Cr4) | Ø12-Ø250 | |
| 40Cr (5140/SCr440/41Cr4) | |||
| 42CrMo(4140/SCM440/42CrMo4) | |||
| Gear Steel | 20CrNiMo | Ø16-Ø600 | |
| 20CrMn(5115/SMnC420/20MnCr5) | |||
| 20CrNiMo(8620/SNCM220/20CrMiMo2) |
Product Show:
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- Q: What are the different methods of surface texturing for special steel?
- There are several different methods of surface texturing for special steel, each with its own unique advantages and applications. Some of the most common methods include: 1. Shot blasting: This process involves propelling small metal or ceramic particles at high speeds onto the surface of the steel. It removes any impurities or contaminants on the surface, creating a textured finish that improves adhesion for coatings and paints. 2. Acid etching: This method involves immersing the steel in an acidic solution, which selectively removes a thin layer of the surface to create a textured pattern. Acid etching can be used to achieve intricate designs or patterns on the steel surface. 3. Mechanical grinding: This technique involves using abrasive tools to physically grind and remove material from the surface of the steel. It can be used to create a range of textures, from smooth to rough, depending on the grit size of the grinding tool. 4. Laser texturing: This advanced method uses laser technology to create precise and intricate patterns on the surface of the steel. Laser texturing offers high precision and repeatability and can be used to achieve complex designs that are difficult to achieve with other methods. 5. Electrochemical etching: This process involves using an electric current to selectively dissolve the surface of the steel, creating a textured pattern. It can be used to achieve consistent and controlled textures on the steel surface. Each method of surface texturing has its own advantages and limitations, and the choice of method depends on the desired texture, the specific properties of the special steel, and the intended application.
- Q: How is special steel used in the manufacturing of cutting tools?
- Special steel is used in the manufacturing of cutting tools due to its exceptional properties such as high hardness, wear resistance, and toughness. This type of steel allows for the production of durable and efficient cutting tools that can withstand the high forces and temperatures involved in cutting operations. Additionally, special steel can be heat-treated to further enhance its properties, making it ideal for creating sharp and long-lasting cutting edges.
- Q: What are the different alloying elements used in special steel?
- There are several different alloying elements used in special steel, including chromium, nickel, molybdenum, vanadium, tungsten, cobalt, and manganese. These elements are added in varying amounts to enhance the steel's properties such as strength, corrosion resistance, hardness, and heat resistance.
- Q: What are the thermal properties of special steel?
- Special steels are highly sought-after in various applications due to their unique thermal properties. A key property of special steel is its exceptional thermal conductivity, enabling efficient heat transfer and dissipation. This characteristic renders special steel perfect for heat exchangers, facilitating effective heat transfer between fluids. Moreover, special steel boasts a high melting point, ensuring its structural integrity even under extreme temperatures. Consequently, it finds suitability in applications that involve exposure to extreme heat, such as furnaces or aerospace engines. Additionally, special steel exhibits superb thermal expansion properties, expanding and contracting consistently with temperature changes. This minimizes the risk of warping or cracking, which is crucial in applications requiring dimensional stability, such as precision instruments or high-temperature machinery. Furthermore, special steel possesses excellent resistance to thermal fatigue. It can endure repeated heating and cooling cycles without developing cracks or weakening. This property proves highly advantageous in applications subjected to cyclic thermal loading, such as automotive engine components or turbine blades. In conclusion, special steel offers high thermal conductivity, a high melting point, exceptional thermal expansion properties, and resistance to thermal fatigue. These desirable thermal properties make it a preferred choice across various industries, including automotive, aerospace, energy, and manufacturing, where thermal performance and durability are paramount.
- Q: What are the factors that affect the mechanical properties of special steel?
- The mechanical properties of special steel are affected by several factors. Some of the key factors include the chemical composition of the steel, the heat treatment process, the presence of impurities or alloying elements, the microstructure of the steel, and the manufacturing process used. These factors can greatly influence the steel's strength, hardness, toughness, ductility, and corrosion resistance.
- Q: Can special steel be used in the plumbing industry?
- Yes, special steel can be used in the plumbing industry. It is often used in the manufacturing of pipes, fittings, and other components due to its high strength, corrosion resistance, and durability. Special steel, such as stainless steel or galvanized steel, is preferred for plumbing applications where longevity and resistance to corrosion are desired.
- Q: What are the specific requirements for special steel used in the chemical reactor industry?
- The specific requirements for special steel used in the chemical reactor industry typically include high corrosion resistance, excellent heat resistance, and strong mechanical properties. It should also have the ability to withstand aggressive chemical environments, such as strong acids or alkalis. Additionally, the steel should have low levels of impurities to prevent contamination of the chemical reactions.
- Q: What are the common applications of special steel?
- Special steel, also known as alloy steel, is widely used in various industries due to its unique properties and benefits. Some common applications of special steel include: 1. Automotive industry: Special steel is extensively used in the automotive sector for manufacturing engine components, such as crankshafts, camshafts, connecting rods, and valves. Its high strength, durability, and resistance to wear make it ideal for withstanding the demanding conditions of internal combustion engines. 2. Aerospace industry: Special steel is crucial in the aerospace industry for manufacturing critical components like landing gear, turbine blades, and structural parts. Its high strength-to-weight ratio, excellent heat resistance, and ability to withstand extreme conditions make it essential for ensuring the safety and reliability of aircraft. 3. Energy industry: Special steel plays a vital role in the energy sector, particularly in power generation. It is used for manufacturing turbine blades, steam pipes, pressure vessels, and other components in power plants. Its ability to withstand high temperatures, pressure, and corrosive environments makes it suitable for these demanding applications. 4. Oil and gas industry: Special steel is extensively used in the oil and gas sector for manufacturing pipes, valves, fittings, and drilling equipment. Its resistance to corrosion and high strength ensure the safe transportation and extraction of oil and gas in harsh environments. 5. Construction industry: Special steel is commonly used in the construction sector for various applications. It is used for manufacturing reinforcement bars, structural components, and fasteners. Its high tensile strength, durability, and resistance to corrosion make it ideal for withstanding the loads and environmental conditions experienced in construction projects. 6. Tool and die making: Special steel is widely used in the production of tools and dies. Its high hardness, wear resistance, and toughness make it suitable for manufacturing cutting tools, molds, dies, and other precision components used in various industries. 7. Medical industry: Special steel is used in the medical sector for manufacturing surgical instruments, implants, and medical devices. Its biocompatibility, corrosion resistance, and sterilization capabilities make it suitable for these critical applications. In summary, special steel finds extensive applications in the automotive, aerospace, energy, oil and gas, construction, tool and die making, and medical industries due to its unique properties and ability to withstand demanding conditions.
- Q: What is the role of chromium in special steel?
- The role of chromium in special steel is to provide enhanced corrosion resistance, increased hardness, and improved strength. It forms a protective layer on the surface of the steel, known as chromium oxide, which prevents the steel from rusting or corroding. Chromium also helps in improving the steel's ability to withstand high temperatures and maintain its structural integrity.
- Q: How does special steel contribute to the manufacturing of shafts and axles?
- Due to its unique properties and characteristics, special steel plays a vital role in the production of shafts and axles. Specifically engineered for superior strength, durability, and resistance to wear and tear, special steel is an ideal material for these crucial components in the automotive and machinery sectors. One major advantage of special steel is its high tensile strength. In heavy-duty applications where shafts and axles experience significant loads and torque, special steel's exceptional strength allows them to withstand these forces without deformation, ensuring optimal performance and longevity. Additionally, special steel offers excellent fatigue resistance, which is essential for parts like shafts and axles that undergo cyclic loading. Fatigue failure is a common issue, especially in high-speed rotating applications. By resisting fatigue, special steel helps prevent fractures and extends the lifespan of shafts and axles, reducing downtime and maintenance costs. Another critical property of special steel is its high hardness. This hardness provides superior wear resistance, enabling shafts and axles to withstand the abrasive forces they encounter during operation. By reducing wear and minimizing surface damage, special steel ensures the continued efficiency and reliability of these components. Furthermore, special steel can undergo heat treatment to further enhance its mechanical properties. Through processes like quenching and tempering, manufacturers can selectively modify the steel's hardness, toughness, and strength to suit specific shaft and axle applications. This flexibility allows them to tailor the material properties to meet the required specifications and performance standards. In conclusion, special steel significantly contributes to the manufacturing of shafts and axles by providing exceptional strength, fatigue resistance, hardness, and wear resistance. These properties ensure the durability, reliability, and optimal performance of these critical components in various industries, ultimately leading to safer and more efficient machinery and vehicles.
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SAE 4140 4150 4340 Alloy Steel Round Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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