Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
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Specification
Specifications of Round Bar
Produce Standard: GB, AISI, ASTM, SAE, EN, BS, DIN, JIS
Produce Processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate
Heat Treatment; Normalized / Annealed / Quenched+Tempered
Quality Assurance:All order we can received third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.
Equivement Grade
GB | 20# | 35# | 45# | 20Cr | 40Cr | 35CrMo | 42CrMo | GCr15 | 60Si2MnA | 65Mn |
AISI | 1020 | 1035 | 1045 | 5120 | 5140 | 4135 | 4140 | 52100 | 9260 | 1065 |
JIS | s20c | s35c | s45c | scr435 | scr440 | scm435 | scm440 | suj2 | sup7 | - |
DIN | c20 | c35 | c45 | 20cr4 | 41cr4 | 35crmo4 | 42crmo4 | 100cr6 | 65si7 |
|
Chemical Composition
Grade | Dia.(mm) | C | Si | Mn | Cr | P | S | Ni | Cu | Mo |
1020 | 16-280 | 0.17-0.25 | 0.17-0.37 | 0.35-0.65 | ≤0.15 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
|
1035 | 16-300 | 0.32-0.40 | 0.17-0.37 | 0.50-0.80 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 |
|
1045 | 16-430 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
|
5120 | 16-85 | 0.18-0.24 | 0.17-0.37 | 0.50-0.80 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 |
|
5140 | 16-400 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.03 |
|
4135 | 13-230 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
4140 | 13-360 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
52100 | 21-400 | 0.95-1.05 | 0.15-0.35 | 0.20-0.40 | 1.30-1.65 | ≤0.027 | ≤0.02 | ≤0.30 | ≤0.025 | ≤0.10 |
9260 | 20-60 | 0.56-0.60 | 1.50-2.00 | 0.60-0.90 | ≤0.35 | ≤0.035 | ≤0.035 | ≤0.35 | ≤0.20 |
|
1566 | 16-80 | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
|
Our Featured Products
Alloy steel: Combination of steel / Bearing steel// Spring steel/ Cr- mo steel
GB 20Cr/ 40Cr / 42CrMo / 35CrMo/ 20CrMn/GCr15/30CrMnTi…
ASTM 5120 /5140 / 4140/ 4135/ 5152/52100…
JIS SCr420H/ SCr440/ SCM3/ SUP9/SUJ2…
Carbon steel: Carbon tool steel /Carbon Structural Steel
GB 20/ 35 /45/…
ASTM 1020/ 1030/1045…
JIS S20C/ S30C / S45C…
Usage and Applications of Round Bar
1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Steel round bar is used in construction and a large number of architectural and engineering structures.
Packaging & Delivery of Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 15~45 days
Trade terms: FOB, CFR, CIF
MOQ: 30 metric tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q: How is special steel used in the aerospace manufacturing process?
- Special steel is used in the aerospace manufacturing process for various applications, such as producing critical components like landing gear, turbine blades, and engine parts. The high strength, durability, and resistance to corrosion make special steel an ideal material for these aerospace components, ensuring the safety, reliability, and performance of the aircraft.
- Q: How is nitriding steel used in the production of tools and dies?
- Nitriding steel is used in the production of tools and dies through a process called nitriding. This involves introducing nitrogen into the surface of the steel, which forms a hard layer of nitrides, increasing the overall hardness, wear resistance, and corrosion resistance of the material. This enhanced surface hardness makes the tools and dies more durable and long-lasting, allowing them to withstand the high stresses and temperatures experienced during cutting, forming, and shaping processes. Additionally, nitriding steel can also improve the fatigue strength and reduce the friction of the tools and dies, enhancing their performance and efficiency in various industrial applications.
- Q: What are the main advantages of using special steel in the construction industry?
- The main advantages of using special steel in the construction industry are its high strength, durability, and resistance to corrosion. Special steel has superior mechanical properties compared to regular steel, allowing for the construction of stronger and more robust structures. It can withstand heavy loads, extreme weather conditions, and natural disasters, ensuring the safety and longevity of buildings. Additionally, its corrosion resistance properties reduce maintenance costs and extend the lifespan of structures, making it a cost-effective choice in the long run.
- Q: How does special steel contribute to the automotive noise reduction?
- Special steel contributes to automotive noise reduction through its unique properties and manufacturing processes. Special steels, such as high-strength steel and acoustic steel, are specifically designed to absorb or dampen vibrations and sound waves, resulting in reduced noise levels within the vehicle cabin. These steels possess enhanced damping characteristics, which help to minimize the transmission of noise generated by the engine, road, and other external sources. Additionally, special steel's superior strength and stiffness properties allow for the design of lighter and more rigid vehicle structures, which further aid in noise reduction by reducing vibrations and minimizing the potential for rattling noises. Overall, the use of special steel in automotive applications plays a crucial role in enhancing overall driving comfort and reducing noise pollution.
- Q: How does special steel perform in terms of wear resistance?
- Special steel is known for its exceptional wear resistance, making it highly durable and long-lasting even under harsh conditions. It exhibits superior resistance to abrasion, erosion, and impact, allowing it to withstand heavy usage and minimize wear and tear. This characteristic makes special steel an excellent choice for applications where wear resistance is crucial, such as in the manufacturing of tools, machinery, and automotive components.
- Q: What are the different methods for annealing special steel?
- There are several methods for annealing special steel, each designed to achieve specific results and properties. Some of the most commonly used methods include: 1. Full annealing: This method involves heating the steel to a temperature above its critical temperature and holding it there for a specific duration of time. It is then slowly cooled to room temperature. Full annealing helps to achieve maximum softness and improve ductility, making the steel easier to machine and work with. 2. Isothermal annealing: In this method, the steel is heated to a temperature above its critical temperature and then immediately transferred to a furnace or chamber where it is held at a constant temperature. This allows for controlled cooling, resulting in a homogeneous and fine-grained microstructure. Isothermal annealing is particularly useful for reducing distortion and improving dimensional stability in complex-shaped parts. 3. Spheroidize annealing: This method is commonly used for high-carbon steels. It involves heating the steel to a temperature just below its critical temperature and holding it there for an extended period. This promotes the formation of spheroidized carbides, which improves machinability and reduces brittleness. 4. Process annealing: This method is typically employed to relieve internal stresses and reduce hardness in cold-worked steel. The steel is heated to a temperature below its critical temperature and then cooled in still air. Process annealing helps to restore ductility and improve formability. 5. Stress-relief annealing: This method is used to alleviate residual stresses in the steel, often caused by welding or machining processes. The steel is heated to a temperature below its critical temperature and then slowly cooled. Stress-relief annealing helps to minimize distortion and prevent cracking. It is important to note that the specific annealing method used for special steel will depend on factors such as the composition of the steel, desired mechanical properties, and the intended application of the material.
- Q: What are the different methods of coating special steel?
- Enhancing the performance and safeguarding special steel from corrosion or damage can be achieved through various coating methods. Some commonly used techniques include: 1. Galvanization: A layer of zinc is applied to the steel, either through hot-dip galvanization or electroplating. This zinc layer offers exceptional corrosion resistance and acts as a sacrificial anode, preventing rusting. 2. Powder coating: An electrostatically applied dry powder is cured under heat, creating a protective layer that not only provides resistance to chipping, scratching, and corrosion but also adds an appealing finish. 3. Electroplating: The steel is immersed in a solution containing metal ions like chromium or nickel, and an electric current is passed through it. This process deposits the metal ions onto the steel surface, forming a thin protective layer that enhances corrosion resistance and gives a decorative appearance. 4. Cladding: A layer of corrosion-resistant material, such as stainless steel or titanium, is bonded to the surface of the special steel. Cladding offers improved resistance to corrosion, wear, and heat while maintaining the base steel's strength and mechanical properties. 5. Thermal spraying: Coating material like zinc or aluminum is heated to a molten or semi-molten state and then sprayed onto the steel surface using compressed air or a similar method. The sprayed material forms a protective layer that delivers excellent corrosion resistance and can also provide functional properties like thermal insulation or electrical conductivity. 6. Chemical conversion coating: The steel surface is treated with a chemical solution that reacts with the surface to create a thin layer of protective compound like phosphate or chromate. This conversion coating enhances corrosion resistance and promotes the adhesion of subsequent coatings. These are just a few examples of the numerous coating methods available for special steel. The selection of the most suitable method depends on factors like desired properties, intended application, and budget constraints. It is crucial to choose the appropriate coating method to ensure the longevity and performance of the special steel.
- Q: What are the different methods of improving the wear resistance of special steel?
- To improve the wear resistance of special steel, there are various techniques that can be employed. To start, heat treatment methods like quenching and tempering can be utilized. Quenching involves rapidly cooling the steel in a liquid medium, such as oil or water, to enhance its hardness. This process forms a hardened surface layer that can effectively resist wear. On the other hand, tempering involves reheating the quenched steel to a specific temperature and gradually cooling it. This helps reduce the brittleness caused by quenching and improves the steel's toughness, which is crucial for wear resistance. Another approach is through alloying. By adding elements like chromium, manganese, or vanadium to the steel, its wear resistance can be significantly enhanced. These alloying elements form carbides, nitrides, or borides, which increase the hardness and improve the material's ability to resist wear and abrasion. Surface treatment techniques, such as carburizing or nitriding, can also be employed. Carburizing involves heating the steel in a carbon-rich atmosphere, introducing carbon into its surface. This creates a hardened surface layer with a high carbon content, making the steel more wear-resistant. Nitriding, on the other hand, involves diffusing nitrogen into the steel's surface, forming nitrides that increase hardness and wear resistance. Furthermore, the steel surface can be coated using physical vapor deposition (PVD) or chemical vapor deposition (CVD). PVD involves depositing a thin layer of wear-resistant material, like titanium nitride or diamond-like carbon, onto the steel surface using a vacuum process. CVD, on the other hand, involves depositing a wear-resistant coating through chemical reactions at elevated temperatures. These coatings provide an additional layer of protection against wear and friction. Lastly, the grain size of the steel can be controlled through processes like grain refinement or severe plastic deformation. Smaller grain sizes typically result in increased hardness and improved wear resistance. Overall, a combination of these methods can be employed to enhance the wear resistance of special steel, depending on the specific application and desired properties.
- Q: What is the role of chromium in special steel?
- The unique properties and characteristics of chromium are crucial in special steel. It is added primarily to steel alloys to enhance their corrosion resistance, durability, and strength. One significant contribution of chromium is its ability to form a passive oxide layer called chromium oxide on the steel's surface. This layer acts as a protective barrier, preventing corrosive elements like oxygen and moisture from reaching the steel. The corrosion resistance of chromium-containing steel makes it highly suitable for harsh environments, such as the marine or chemical industries. Moreover, chromium improves the mechanical properties of steel. It increases hardness, toughness, and wear resistance, making it valuable in manufacturing tools, machinery components, and other applications that require strength and durability. Chromium also helps retain sharpness and edge retention, making it ideal for high-quality knives and blades. Additionally, chromium is essential in heat-resistant steel alloys as it significantly improves the material's ability to withstand high temperatures without losing strength or shape. This makes it suitable for applications in turbine blades, exhaust systems, and aerospace components. In conclusion, chromium plays a vital role in special steel by enhancing corrosion resistance, improving mechanical properties, and enabling high-temperature resistance. These properties make chromium-containing steel alloys highly valuable and versatile in various industries and applications.
- Q: How is special steel used in the production of springs?
- Special steel is used in the production of springs due to its high strength and durability. The unique properties of special steel allow springs to withstand heavy loads and retain their shape even under extreme conditions. This enables springs to function effectively in various applications such as automotive, aerospace, manufacturing, and more.
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Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
OKorder Service Pledge
OKorder Financial Service
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