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 advantages of using special steel in the aerospace industry?
- The main advantages of using special steel in the aerospace industry are its high strength-to-weight ratio, excellent corrosion resistance, and superior heat and wear resistance. These properties make special steel ideal for constructing aircraft components that need to withstand extreme conditions, such as high temperatures, pressure, and stress. Additionally, special steel offers excellent fatigue resistance, ensuring the longevity and reliability of aerospace structures.
- Q: What is the importance of heat treatment in special steel?
- Heat treatment is of utmost importance in special steel because it significantly enhances its mechanical properties and overall performance. Special steel, also known as alloy steel, is specifically designed to possess specific characteristics such as high strength, hardness, wear resistance, and toughness, making it suitable for demanding applications in industries like automotive, aerospace, and tooling. The heat treatment process involves controlled heating and cooling of the steel to alter its microstructure, which in turn affects its properties. There are several heat treatment techniques employed, including annealing, tempering, quenching, and hardening, each serving a specific purpose. One key importance of heat treatment in special steel is the ability to increase its hardness. Through techniques like quenching and hardening, the steel can be transformed into a hardened state, where it becomes much stronger and more resistant to abrasion and wear. This is crucial for applications that involve heavy loads, impact, and abrasive environments. Additionally, heat treatment can also improve the toughness and ductility of special steel. By carefully controlling the cooling rate during the heat treatment process, the steel's microstructure can be adjusted to achieve a fine-grained structure, enhancing its toughness and ability to withstand sudden impacts or shocks. This is particularly important in applications where the material needs to absorb energy and resist fractures, such as in structural components or tools. Furthermore, heat treatment can also improve the machinability and dimensional stability of special steel. By subjecting the steel to annealing or tempering processes, internal stresses and residual strains can be relieved, resulting in a more stable and easier-to-machine material. This is crucial in industries where precision and dimensional accuracy are paramount. In conclusion, the importance of heat treatment in special steel cannot be overstated. It is a vital process that allows for the optimization of the steel's mechanical properties, ensuring it meets the specific requirements of demanding applications. By carefully manipulating the microstructure, heat treatment enhances the steel's hardness, toughness, and machinability, making it a versatile and reliable material in various industries.
- Q: How does special steel contribute to the energy aftermarket industry?
- Special steel contributes to the energy aftermarket industry by providing high-quality and durable materials that are essential for the manufacturing of various energy-related components. It is used in the production of turbines, generators, pipelines, and other critical equipment, ensuring optimal performance and longevity in energy production and distribution. The special properties of this steel, such as corrosion resistance, high temperature resistance, and strength, make it an ideal choice for demanding applications in the energy sector. Its availability and usage in the industry contribute to enhanced efficiency, reliability, and overall sustainability in the energy aftermarket.
- Q: What are the main factors affecting the corrosion resistance of special steel?
- There are several main factors that can affect the corrosion resistance of special steel. Firstly, the composition of the steel plays a crucial role in determining its corrosion resistance. Special steels are typically alloyed with elements such as chromium, nickel, and molybdenum, which form a protective oxide layer on the surface of the steel. This layer acts as a barrier against corrosive substances, preventing them from reaching the underlying steel and causing corrosion. The higher the percentage of these alloying elements, the better the corrosion resistance of the steel. Secondly, the presence of impurities or contaminants in the steel can greatly affect its corrosion resistance. Any impurities or contaminants, such as sulfur or phosphorous, can compromise the protective oxide layer and make the steel more susceptible to corrosion. Therefore, the purity of the steel, as well as the manufacturing process used, is important in ensuring good corrosion resistance. Thirdly, the surface finish of the steel can also impact its corrosion resistance. A smooth and polished surface can help reduce the likelihood of corrosion, as it minimizes the areas where corrosive substances can accumulate and penetrate the steel. Additionally, surface treatments such as passivation or coating can further enhance the corrosion resistance of special steel. Furthermore, the environment in which the steel is exposed to is another critical factor. Different environments have varying levels of corrosive substances, such as moisture, acids, or salts, which can accelerate the corrosion process. For instance, marine environments with high salt content are particularly corrosive, requiring special steel grades that offer superior resistance to such conditions. Lastly, the temperature at which the steel operates can influence its corrosion resistance. Some special steels, such as stainless steel, exhibit excellent corrosion resistance at elevated temperatures, making them suitable for high-temperature applications where other materials may corrode. In summary, the main factors affecting the corrosion resistance of special steel include its composition, the presence of impurities, the surface finish, the environment it is exposed to, and the operating temperature. By considering these factors and selecting the appropriate steel grade, one can ensure optimal corrosion resistance for specific applications.
- Q: How does special steel contribute to improving product aesthetics?
- Special steel contributes to improving product aesthetics through its unique properties and characteristics. It can be shaped, molded, and finished in various ways, allowing manufacturers to create intricate and visually appealing designs. Special steel also offers a wide range of colors, textures, and surface finishes, enabling products to have a visually pleasing appearance. Additionally, its high strength and durability ensure that the product maintains its aesthetics over time, providing a long-lasting and visually satisfying experience for consumers.
- Q: What are the different methods of measuring the hardness of special steel?
- There are several methods available for measuring the hardness of special steel. These methods can be categorized into two main categories: destructive and non-destructive testing. 1. Rockwell Hardness Test: This is a widely used destructive testing method that measures the depth of penetration of an indenter into the steel surface. The Rockwell hardness test provides a hardness value based on the resistance of the steel to indentation. It is a simple and quick method that requires minimal sample preparation. 2. Brinell Hardness Test: Another destructive testing method, the Brinell hardness test, involves applying a known load to a hardened steel ball and measuring the diameter of the indentation left on the steel surface. The hardness value is determined based on the ratio of the applied load to the surface area of the indentation. 3. Vickers Hardness Test: This is a micro-indentation test that utilizes a diamond pyramid-shaped indenter. The Vickers hardness test measures the diagonal length of the indentation left on the steel surface and calculates the hardness value based on the applied load. 4. Knoop Hardness Test: Similar to the Vickers test, the Knoop hardness test is a micro-indentation method that uses a diamond pyramid-shaped indenter. However, instead of measuring the diagonal length of the indentation, it measures the length of the long axis. This test is particularly useful for measuring the hardness of thin steel samples or steel coatings. 5. Ultrasonic Hardness Test: This non-destructive testing method measures the hardness of steel by analyzing the propagation of ultrasonic waves through the material. The hardness value is determined based on the correlation between the velocity of the waves and the hardness of the steel. 6. Magnetic Hardness Test: This non-destructive testing method utilizes magnetic properties to measure the hardness of steel. It involves applying a magnetic field to the steel and measuring the magnetic response. The hardness value is determined based on the correlation between the magnetic response and the hardness of the steel. It is important to note that each method has its advantages and limitations, and the choice of method depends on factors such as the type of steel, the required accuracy, the sample size, and the available equipment and expertise.
- Q: What are the advantages of using special steel in specific applications?
- The advantages of using special steel in specific applications include its enhanced strength, durability, and resistance to corrosion. Special steel alloys are specifically developed to meet the unique requirements of various industries, such as aerospace, automotive, and construction. These alloys offer superior performance under extreme conditions, allowing for lighter and more efficient designs. Additionally, special steel can be heat-treated to further enhance its properties, making it ideal for applications that demand high strength and toughness.
- Q: How is special steel used in the construction industry?
- Special steel is used in the construction industry for various applications due to its exceptional strength, durability, and resistance to corrosion. It is commonly used for manufacturing structural components, such as beams, columns, and girders, that require high load-bearing capacities. Special steel is also utilized in the construction of bridges, towers, and high-rise buildings to ensure structural integrity and safety. Additionally, it finds application in reinforcing concrete structures, creating strong and long-lasting foundations. Overall, special steel plays a crucial role in enhancing the strength and stability of construction projects.
- Q: What are the properties of titanium alloys?
- Titanium alloys have several notable properties, including high strength-to-weight ratio, excellent corrosion resistance, and good biocompatibility. These alloys also exhibit high temperature stability, low thermal expansion, and great fatigue strength, making them suitable for a wide range of applications in industries such as aerospace, automotive, and medical.
- Q: Can special steel be used in the packaging industry?
- Yes, special steel can be used in the packaging industry. Special steel alloys, such as stainless steel, offer excellent durability, corrosion resistance, and strength, making them suitable for manufacturing packaging materials and machinery. They are commonly used in producing containers, drums, cans, and machinery components for packaging applications.
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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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