SCM440 Alloy Steel Round Bars Hot Forged Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Item specifice
Type:
Alloy Steel
Shape:
Steel Round Bar
SCM440 Alloy Steel Round Bars Hot Forged Bar
Product Description:
1. Sizes: Diameter: 16mm-300mm; Length: 6m, 9m, 12m
2. Grade: 42CrMo, 4140,42CrMov，SCM440
3. Invoicing on theoretical weight or actual weight as customer’s request
4. Shape: Round bar, solid bar of steel with circular section
5. Technique: Hot rolled, forged, cold rolled
Specification:
Material | SCM440 | Round bar | Dia(mm) | 16-600 |
Process | EAF + LF + VD + Forged + Heat Treatment (optional) | Length (mm) | Max 12000 | |
Heat treatment | Normalized / Annealed / Quenched / tempered | Flat bar | Thickness(mm) | 8-500 |
Delivery condition | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) | Width(mm) | 70-200 | |
Test | Ultrasonic test according to SEP 1921-84 D/d | Length (mm) | Max 12000 |
Chemical Composition:
C | Si | Mn | Cr | Ni | Cu |
0.38~0.45 | 0.17~0.37 | 0.50~0.80 | 0.9-1.2 | ≤0.030 | ≤0.030 |
Packing and Delivery:
Packing in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: Approx.45 days
Usage and Applications:
1. SCM440 Alloy Steel Round Bars Hot Forged Bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some especial material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Product Show:
- Q:How is special steel used in the manufacturing of tools and dies?
- Special steel is used in the manufacturing of tools and dies due to its exceptional properties, such as high strength, hardness, and wear resistance. These steels can withstand extreme temperatures and pressures during the forming, cutting, and shaping processes. They also have excellent dimensional stability, ensuring precise and accurate tooling. Special steel's unique composition and heat treatment capabilities allow for the production of durable and long-lasting tools and dies, which are essential for various industries like automotive, aerospace, and manufacturing.
- Q:What are the common defects found in special steel production?
- Some common defects found in special steel production include: 1. Inclusions: These are impurities or foreign materials that are trapped within the steel during the manufacturing process. Inclusions can weaken the steel and reduce its overall quality and performance. 2. Segregation: Segregation refers to the uneven distribution of elements within the steel. This can occur when there are fluctuations in temperature or composition during the production process. Segregation can lead to inconsistencies in the steel's mechanical properties, making it less reliable. 3. Cracks: Cracks can occur in special steel production due to various reasons, such as improper cooling or excessive stress during the manufacturing process. Cracks can significantly weaken the steel, making it more prone to failure. 4. Decarburization: Decarburization is the loss of carbon from the surface of the steel, usually caused by exposure to high temperatures or oxidizing environments. This can reduce the steel's hardness and strength, compromising its performance. 5. Laminations: Laminations are layers or sheets that can form within the steel due to improper rolling or forging techniques. These layers can weaken the steel and potentially cause it to fail under stress. 6. Dimensional variations: Special steel production requires precise control of dimensions to meet specific requirements. However, dimensional variations can occur due to factors like inconsistent cooling or improper machining. These variations can affect the fit, function, and overall performance of the steel components. 7. Non-uniform microstructure: Inconsistent cooling rates or other processing factors can lead to a non-uniform microstructure in the steel. This can result in variations in hardness, strength, and other mechanical properties, affecting the overall quality of the steel. It is important for manufacturers to have stringent quality control measures in place to detect and minimize these defects during special steel production. Regular inspections, testing, and adherence to industry standards can help ensure that the final product meets the desired specifications and is free from common defects.
- Q:How does special steel contribute to the thermal conductivity of products?
- Special steel contributes to the thermal conductivity of products by having a higher thermal conductivity compared to other materials. This means that when special steel is used in the production of products, it allows for efficient transfer of heat, resulting in better heat distribution and dissipation.
- Q:What are the different surface finishing techniques for special steel parts?
- Special steel parts can undergo various surface finishing techniques to enhance their appearance, protect against corrosion, and improve overall performance. Some commonly utilized methods include: 1. Achieving a smooth and glossy surface on the steel part through polishing, using abrasives. This technique not only enhances aesthetics but also enhances resistance against corrosion. 2. Plating involves depositing a layer of metal onto the steel part's surface, with options such as chrome, nickel, and zinc. This technique provides additional protection against corrosion, improves wear resistance, and can offer desired color or finish. 3. Powder coating entails electrostatically applying a dry powder to the steel part's surface, followed by heat curing. The melted powder forms a durable and visually appealing coating that provides excellent resistance against corrosion, impact, and chemicals. 4. Anodizing, primarily used for aluminum but applicable to certain special steel parts, creates a controlled oxide layer on the surface. This enhances corrosion resistance, improves appearance, and can even provide insulation. 5. Employing a chemical process known as passivation removes free iron and contaminants from the steel part's surface. This process helps prevent corrosion and enhances resistance against staining or discoloration. 6. Heat treatment involves altering the physical and mechanical properties of the steel part by subjecting it to heating and cooling. This process improves hardness, strength, toughness, and provides desired surface finishes. 7. Through electropolishing, an electrochemical process, a thin layer of metal is removed from the steel part's surface. This technique eliminates surface imperfections, smoothens the part, and enhances corrosion resistance. Choosing the appropriate surface finishing technique is crucial, taking into consideration the specific requirements of the special steel part, including its function, desired appearance, and the environmental conditions it will encounter.
- Q:What are the specific requirements for special steel used in the chemical industry?
- The specific requirements for special steel used in the chemical industry include corrosion resistance, high strength, and the ability to withstand extreme temperatures and pressures. Additionally, it should have excellent weldability and formability, as well as resistance to various chemicals and acids commonly found in chemical processes.
- Q:How does special steel contribute to sustainable construction?
- Special steel contributes to sustainable construction in several ways. Firstly, special steel is highly durable and has a longer lifespan compared to traditional building materials. This means that structures built with special steel require less maintenance and repairs over time, reducing the overall environmental impact. Secondly, special steel is often made from recycled materials, such as scrap metal, which helps to conserve natural resources and reduce waste. The recycling process also requires less energy compared to producing new steel, further reducing the carbon footprint. Additionally, special steel offers high strength-to-weight ratio, allowing for lighter and more efficient construction designs. This leads to reduced material consumption and transportation costs, as well as minimizing the load on the foundation and infrastructure. Lastly, special steel is highly resistant to corrosion and can withstand extreme weather conditions. This resilience ensures the longevity of the structures, reducing the need for replacements and minimizing construction waste. Overall, special steel's durability, recyclability, lightweight nature, and resistance to corrosion contribute significantly to sustainable construction practices by minimizing environmental impact, conserving resources, and promoting long-lasting structures.
- Q:How is electrical steel used in the manufacturing of transformers?
- Electrical steel, also known as transformer steel, is a specialized type of steel used in the manufacturing of transformers. It is primarily used as the core material in transformers due to its unique magnetic properties. The core is responsible for transferring electrical energy from the primary coil to the secondary coil by creating a magnetic field. Electrical steel's low core losses and high magnetic permeability make it ideal for this purpose. Its high silicon content helps reduce energy loss and heat generation, improving the efficiency of transformers.
- Q:What are the different methods for improving the creep resistance of special steel?
- There are several methods for improving the creep resistance of special steel. One approach is through alloying, where elements such as chromium, molybdenum, and tungsten are added to enhance the strength and stability of the steel at high temperatures. Another method is by heat treatment, which involves controlled heating and cooling processes to optimize the microstructure of the steel and improve its creep resistance. Additionally, surface treatments like carburizing or nitriding can be applied to increase the hardness and wear resistance of the steel, thereby improving its creep resistance. Lastly, proper design and engineering considerations, such as using thicker sections or incorporating reinforcements, can also contribute to enhancing the creep resistance of special steel.
- Q:How does special steel contribute to the renewable energy industry?
- Special steel plays a crucial role in the renewable energy industry by providing the necessary strength, durability, and resistance to extreme conditions for various applications. It is used in wind turbines, solar panels, and hydroelectric infrastructure, enabling the efficient and reliable generation of renewable energy. Special steel also helps enhance the performance, efficiency, and lifespan of these renewable energy systems, ultimately contributing to the sustainability and growth of the industry.
- Q:How does special steel perform in cutting applications?
- Special steel is highly regarded for its exceptional performance in cutting applications. Due to its unique composition and properties, special steel exhibits superior strength, hardness, and wear resistance compared to regular steel. These characteristics make it incredibly effective in withstanding the intense forces and pressures involved in cutting processes. Special steel is known for its ability to maintain its shape and sharpness even under extreme conditions. It has a high level of toughness, ensuring that it can withstand repeated impact and resist deformation or breakage. This durability allows it to maintain its cutting edge for an extended period, resulting in longer tool life and reduced downtime for sharpening or replacing blades. Furthermore, special steel's hardness enables it to effectively cut through tough and abrasive materials such as metals, alloys, and composites. It can withstand the heat generated during cutting, preventing the blade from becoming dull or losing its cutting ability. This heat resistance also reduces the risk of thermal damage to the workpiece, ensuring precise and clean cuts. In addition to its mechanical properties, special steel offers excellent corrosion resistance. This is particularly advantageous in cutting applications that involve exposure to moisture, chemicals, or corrosive environments. The corrosion resistance ensures that the cutting tools made from special steel maintain their performance and longevity, even in challenging conditions. Overall, special steel exhibits exceptional performance in cutting applications due to its superior strength, hardness, wear resistance, and corrosion resistance. Its ability to maintain a sharp cutting edge, withstand high pressures and temperatures, and resist corrosion makes it a preferred choice in various industries, including manufacturing, construction, automotive, and aerospace.
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SCM440 Alloy Steel Round Bars Hot Forged Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 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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