Round Bar 42CrMo 4140 Steel of CNBM
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Round Bar 42CrMo 4140 Steel of CNBM
Product Description:
1. Sizes: Diameter: 16mm-300mm; Length: 6m, 9m, 12m
2. Grade: 42CrMo, 4140,42CrMov
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 | 42CrMo | 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. Steel round 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: What are the main factors affecting the wear resistance of special steel?
- The main factors affecting the wear resistance of special steel include the composition of the steel, the hardness and microstructure of the steel, the presence of carbides or other hardening elements, the surface finish and treatment of the steel, and the operating conditions in which the steel is used.
- Q: How does special steel contribute to reducing product lead times?
- Special steel contributes to reducing product lead times by offering several advantages. Firstly, special steel is known for its high strength and durability, allowing manufacturers to produce parts that can withstand harsh conditions and heavy usage. This ensures that the products made with special steel have a longer lifespan, reducing the need for frequent repairs or replacements. Secondly, special steel can be fabricated into complex shapes and sizes, enabling manufacturers to produce intricate components with high precision. This eliminates the need for additional machining processes, saving time and reducing lead times. Lastly, special steel often has improved mechanical properties, such as higher hardness or heat resistance, which can enhance the performance of the final product. This allows manufacturers to meet specific requirements and deliver high-quality products more efficiently, ultimately reducing lead times.
- Q: What are the properties of wear-resistant stainless steel?
- Wear-resistant stainless steel has several properties that make it highly effective in resisting wear and tear. Firstly, it has a high hardness level, which allows it to withstand abrasive forces and maintain its shape under heavy loads. Additionally, it exhibits excellent corrosion resistance, preventing rust or degradation even in harsh environments. This type of stainless steel also possesses good impact resistance, meaning it can withstand sudden impacts without cracking or breaking. Furthermore, wear-resistant stainless steel typically has a low coefficient of friction, reducing frictional forces and minimizing wear when in contact with other materials. Overall, these properties make wear-resistant stainless steel a durable and reliable choice for applications where wear and tear are major concerns.
- Q: What are the different material selection factors for special steel?
- To ensure the desired performance, durability, and cost-effectiveness of the final product, engineers and designers must consider various factors when selecting materials for special steel. Key factors include mechanical properties, corrosion resistance, heat resistance, machinability, weldability, cost, availability, and environmental impact. 1. Mechanical Properties: Special steel must possess the necessary mechanical properties to meet the demands of the specific application. This includes strength, hardness, toughness, fatigue resistance, and wear resistance. 2. Corrosion Resistance: Depending on the intended use, special steel may need to have high corrosion resistance to withstand harsh environments, chemicals, or moisture. This ensures the longevity and reliability of the steel in its intended application. 3. Heat Resistance: Special steel may need to exhibit excellent heat resistance, especially for applications involving high temperatures like aerospace or power generation industries. The material should retain its strength and structural integrity even at elevated temperatures. 4. Machinability: The ease of machining special steel is crucial, especially for applications involving complex shapes or precision components. High machinability allows for efficient manufacturing processes and reduces production costs. 5. Weldability: Special steel selected for applications requiring welding should have good weldability. This ensures that the material can be easily welded without compromising strength or introducing defects. 6. Cost: The cost of the material plays a significant role in material selection. Engineers and designers must balance desired properties with the available budget to achieve optimal cost-effectiveness. 7. Availability: Ensuring a reliable and consistent supply of the chosen special steel is vital to avoid production delays or interruptions. 8. Environmental Impact: The environmental impact of the material should be evaluated, considering factors such as energy consumption during production, recyclability, and the use of sustainable raw materials. Opting for eco-friendly materials aligns with sustainable practices and regulations. By carefully considering these material selection factors, engineers and designers can choose the most suitable special steel for their specific application, ensuring optimal performance, durability, and cost-efficiency.
- Q: What are the requirements for special steel used in high-pressure applications?
- To ensure its durability and reliability under extreme conditions, special steel utilized in high-pressure applications must fulfill specific criteria. Some of the crucial requirements for this type of steel include the following: 1. Exceptional strength: The steel must possess extraordinary strength to withstand the intense forces and pressures it will encounter. This allows it to resist deformation and maintain its structural integrity. 2. Remarkable corrosion resistance: The steel needs to exhibit a high resistance to corrosion since it will frequently come into contact with aggressive fluids or gases in high-pressure environments. This prevents deterioration over time and helps sustain its performance and longevity. 3. Good weldability: The special steel employed in high-pressure applications should have good weldability in order to facilitate easy and efficient joining of different components. This ensures the overall integrity and reliability of the system. 4. Endurance against high temperatures: The steel must be capable of withstanding elevated temperatures without compromising its mechanical properties. This is particularly critical in applications where high-pressure fluids or gases are heated or where the steel is exposed to extreme heat sources. 5. Resistance to fatigue: The special steel should display a high resistance to fatigue failure, as it will often undergo cyclic loading and pressure fluctuations. This enables the steel to endure repeated stress and pressure cycles without developing cracks or failures. 6. Precise dimensional tolerance: The steel should possess precise dimensional tolerance to ensure proper fit and functionality within the high-pressure system. This helps minimize leakage or any potential weak points in the system. 7. Compliance with industry standards: The special steel used in high-pressure applications must meet relevant industry standards and specifications, such as those established by organizations like the American Society of Mechanical Engineers (ASME) or the American Petroleum Institute (API). This guarantees that the steel meets the required quality and performance standards. In summary, special steel for high-pressure applications must possess a combination of extraordinary strength, remarkable corrosion resistance, good weldability, endurance against high temperatures, resistance to fatigue, precise dimensional tolerance, and compliance with industry standards to ensure its suitability and reliability in demanding environments.
- Q: Is special steel suitable for electrical and electronic applications?
- Yes, special steel can be suitable for electrical and electronic applications. Special steel refers to steel alloys that have been specifically designed to possess certain properties or characteristics that make them suitable for particular applications. In the case of electrical and electronic applications, special steel can offer various advantages. One of the key requirements for electrical and electronic applications is high electrical conductivity. While steel is not typically known for its electrical conductivity, certain special steel alloys can be engineered to have improved electrical conductivity. For example, stainless steel can be alloyed with elements such as nickel or copper to enhance its electrical conductivity, making it suitable for applications where electrical current needs to flow efficiently. Another important factor for electrical and electronic applications is magnetic properties. Some special steel alloys exhibit excellent magnetic properties, making them ideal for applications such as transformers, motors, and generators. These alloys can possess high magnetic permeability, low coercivity, and low hysteresis losses, which are crucial for efficient energy transfer and minimal power loss. Furthermore, special steel can also provide excellent corrosion resistance, which is essential in electrical and electronic equipment that may be exposed to moisture or harsh environments. Stainless steel, for instance, is highly resistant to corrosion, ensuring the longevity and reliability of the equipment. In summary, special steel can be suitable for electrical and electronic applications when it possesses the necessary electrical conductivity, magnetic properties, and corrosion resistance. By choosing the appropriate special steel alloy, manufacturers can ensure the performance, durability, and reliability of electrical and electronic equipment.
- Q: How does special steel contribute to sustainability?
- Special steel contributes to sustainability in several ways. Firstly, it is highly durable and has a longer lifespan compared to traditional steel, reducing the need for frequent replacements and minimizing waste. Additionally, special steel can be recycled and reused multiple times without losing its properties, reducing the demand for new raw materials and energy consumption in the production process. Furthermore, special steel offers superior strength and lightweight characteristics, enabling the development of more fuel-efficient vehicles and structures, thus reducing carbon emissions. Overall, special steel's durability, recyclability, and energy efficiency make it a key material in promoting sustainable practices in various industries.
- Q: How does the hardness of special steel affect its machinability?
- The hardness of special steel has a significant impact on its machinability. In general, as the hardness of the steel increases, its machinability decreases. Machinability refers to the ease with which a material can be machined or shaped using various machining processes such as cutting, drilling, or milling. Hardness is a measure of a material's resistance to indentation or scratching. It is typically measured using the Rockwell hardness scale or the Brinell hardness test. Special steel, which is known for its high strength and durability, often has a higher hardness compared to other types of steel. When machining special steel, a harder material poses challenges for several reasons. Firstly, harder materials are more difficult to cut, as they require higher cutting forces and generate more heat during the machining process. This can lead to increased tool wear and shorter tool life, resulting in higher production costs. Secondly, hard steel tends to have lower ductility and toughness, making it more prone to cracking or chipping during machining. This can lead to poor surface finish, dimensional inaccuracies, and even component failure. Moreover, the increased hardness of special steel also affects chip formation. Harder materials tend to produce shorter and more segmented chips, which can cause issues with chip evacuation and tool clogging. This can further hinder the machining process and affect the overall productivity. To improve the machinability of hard special steel, various strategies can be employed. The selection of appropriate cutting tools with specific geometries and coatings designed for hard materials is crucial. Additionally, optimizing cutting parameters such as cutting speed, feed rate, and depth of cut can help reduce the negative effects of hardness on machinability. In conclusion, the hardness of special steel has a direct impact on its machinability. As the hardness increases, the machinability decreases due to increased cutting forces, higher tool wear, reduced ductility, and chip formation challenges. However, with proper tool selection and optimization of cutting parameters, the machinability of hard special steel can be improved, enabling efficient and cost-effective machining processes.
- Q: What are the common applications of special steel?
- Special steel has a wide range of applications in various industries. It is commonly used in the construction and automotive sectors for manufacturing components that require high strength, durability, and resistance to corrosion. Special steel is also utilized in the production of machinery and tools, such as cutting blades, drill bits, and gears, due to its excellent hardness and wear resistance. Additionally, it finds its application in the energy sector, particularly in the manufacturing of turbines, generators, and oil drilling equipment, where its high temperature and pressure resistance are vital.
- Q: What are the different non-destructive testing techniques used for special steel?
- There are several non-destructive testing (NDT) techniques that are commonly used for special steel to ensure its quality and integrity without causing any damage. These techniques are essential in industries where special steel is used, such as aerospace, automotive, and construction, to ensure that the material meets the required specifications and standards. Some of the commonly used NDT techniques for special steel are: 1. Ultrasonic Testing (UT): This technique involves the use of high-frequency sound waves to detect internal flaws, such as cracks, voids, or inclusions, in special steel. UT is highly effective in detecting subsurface defects and is widely used due to its versatility and accuracy. 2. Magnetic Particle Testing (MT): MT is a technique that uses magnetic fields and iron particles to detect surface or near-surface defects in special steel. It is particularly useful in identifying defects like cracks, seams, or laps, as the magnetic particles will accumulate at these locations, making them visible under proper lighting conditions. 3. Liquid Penetrant Testing (PT): PT is a widely-used method for detecting surface defects in special steel. It involves applying a liquid penetrant to the surface of the material, which seeps into any surface cracks or defects. After a specified time, the excess penetrant is removed, and a developer is applied to make the defects visible. 4. Eddy Current Testing (ET): ET utilizes electromagnetic induction to detect surface or near-surface defects in special steel. It is particularly useful in detecting cracks, corrosion, or metal loss in conductive materials. ET is a fast and accurate method, making it suitable for high-speed production environments. 5. Radiographic Testing (RT): RT involves the use of X-rays or gamma rays to examine the internal structure of special steel. It can detect various defects, including porosity, inclusions, and cracks. RT provides detailed images that help identify the location, size, and severity of defects. 6. Visual Testing (VT): VT is a simple yet crucial technique that involves a visual examination of the surface of special steel. It helps identify surface defects like scratches, dents, or corrosion. Although VT is not as sensitive as other NDT techniques, it is often used as a preliminary inspection method. Each of these non-destructive testing techniques has its own advantages and limitations. The selection of the appropriate technique depends on factors such as the type and size of the special steel, the required inspection depth, and the specific defects that need to be detected. By using a combination of these techniques, manufacturers and inspectors can ensure the quality and reliability of special steel products.
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Round Bar 42CrMo 4140 Steel of CNBM
- Ref Price:
-
- Loading Port:
- Shanghai
- 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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