• Hot Rolled Carbon Steel Round Bars S40C System 1
  • Hot Rolled Carbon Steel Round Bars S40C System 2
  • Hot Rolled Carbon Steel Round Bars S40C System 3
  • Hot Rolled Carbon Steel Round Bars S40C System 4
  • Hot Rolled Carbon Steel Round Bars S40C System 5
  • Hot Rolled Carbon Steel Round Bars S40C System 6
Hot Rolled Carbon Steel Round Bars S40C

Hot Rolled Carbon Steel Round Bars S40C

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
50 m.t.
Supply Capability:
120000 m.t./month

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 Hot Rolled Carbon Steel Round Bars S40C

 

Product Specification

1, Chemical Composition %

GradeCSiMnSPCrNiCu
S40C0.37-0.440.17-0.370.50-0.80≤0.030≤0.030≤0.20≤0.25≤0.25

2, Mechanical Properties 

Strength of Extension σbYield Strength  σs

Reduction of Area ψ

impact absorbing energy
≥570 Mpa≥335 Mpa≥45%≥47 Aku2/J

3, Diameter: 16mm - 300mm

    Length: Max 12m

 

Application

Used to produce axis shaft, transmission shaft, piston rod, connecting rod, chain wheel, wheel gear, etc.

Product Main Points

1, Heat Treatment: normalizing, annealing, tempering, quenching

2, Surface Treatment: black, grinding, bright, polish

3, Product Process: hot rolled, cold drawn, forged

 

FAQ

1,  Payment Terms:

      30% T/T deposit & 70% T/T before delivery.

      Irrevocable L/C at sight

2, Trade Terms:

     EXW, FOB, CIF, CNF

3, Delivery Time:

     Normally 30-40 days. According to quantity.

4, Manufacture or Trading Company:

    CNBM is a state-owned fortune global 500 trading company. We have intergrated supply system.

    There are about 20 overseas locations in different countries.

 

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Hot Rolled Carbon Steel Round Bars S40C

 

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Hot Rolled Carbon Steel Round Bars S40C

 

About Us

Hot Rolled Carbon Steel Round Bars S40C

Hot Rolled Carbon Steel Round Bars S40C

 

Q: Can steel round bars be used in the energy industry?
Steel round bars are indeed applicable in the energy industry. These bars are widely utilized in numerous energy industry applications owing to their exceptional attributes, including high strength, durability, and corrosion resistance. They find extensive use in the construction of power plants, oil rigs, pipelines, and other energy infrastructure projects. Moreover, machinery and equipment employed in the energy industry, such as turbines, generators, and pumps, are also manufactured using steel round bars. Furthermore, renewable energy technologies, including wind turbines and solar power systems, often incorporate steel round bars. In summary, steel round bars offer versatility and reliability, making them a superb choice for meeting the demanding requirements of the energy industry.
Q: What are the advantages of using bearing steel round bars?
There are several advantages of using bearing steel round bars: 1. High strength and durability: Bearing steel round bars are known for their exceptional strength and durability. They are specifically designed to withstand heavy loads and high impact forces, making them ideal for applications that require a reliable and robust material. 2. Excellent wear resistance: Bearing steel round bars have excellent wear resistance properties, which means they can endure constant friction and abrasion without experiencing excessive wear and tear. This makes them suitable for applications where the material needs to withstand repetitive rotational motion or sliding. 3. Superior hardness: Bearing steel round bars are typically heat-treated to achieve optimal hardness levels. This hardness allows them to maintain their shape and structural integrity even under extreme conditions, such as high temperatures or heavy loads. 4. Dimensional stability: Bearing steel round bars exhibit excellent dimensional stability, meaning they maintain their shape and size even under varying temperature and environmental conditions. This quality is crucial in applications where precise dimensions are required to ensure proper functioning and performance. 5. Corrosion resistance: Bearing steel round bars are often alloyed with elements like chromium and molybdenum, which enhance their corrosion resistance. This makes them suitable for use in corrosive environments, such as marine or chemical industries. 6. Machinability: Bearing steel round bars are relatively easy to machine and process, which allows for efficient production and customization. This makes them a cost-effective choice for various applications, as they can be easily shaped, cut, or drilled according to specific requirements. Overall, the advantages of using bearing steel round bars include their high strength, excellent wear resistance, superior hardness, dimensional stability, corrosion resistance, and machinability. These qualities make them a preferred choice in industries such as automotive, aerospace, machinery, and construction, where reliability, durability, and performance are crucial.
Q: What is the cost of steel round bars compared to other materials?
The price of steel round bars can differ depending on various factors, including the grade of steel, the bar's size and dimensions, and market conditions. However, in general, steel round bars are usually more economical than other materials commonly used in construction and manufacturing. For example, when compared to materials like aluminum or titanium, steel round bars are typically more affordable. Steel is widely available, making it a cost-efficient choice for many applications. Additionally, steel possesses excellent strength and durability attributes, making it a preferred material for structural purposes. In contrast to materials like wood or plastic, steel round bars may be initially more costly. Nevertheless, when considering the long-term advantages such as its longevity, resistance to corrosion, and minimal maintenance requirements, steel still provides a cost-effective solution. It is important to note that the price of steel round bars can significantly vary depending on market conditions, including the availability of raw materials and the demand for steel products. Additionally, specialized or high-grade steel alloys may come at a higher cost due to their specific properties or manufacturing processes. To summarize, steel round bars generally offer a cost-effective option compared to many other materials used in construction and manufacturing. However, it is always advisable to research current market prices and consider specific project requirements before making any final cost assessments.
Q: How are steel round bars classified based on their shape?
Steel round bars are classified based on their shape into two main categories: hot-rolled round bars and cold-drawn round bars. Hot-rolled round bars are made by heating a steel billet until it becomes malleable and then passing it through a series of rollers to achieve the desired shape. This process results in a rougher surface texture and a slightly larger diameter compared to cold-drawn round bars. Hot-rolled round bars are commonly used in construction, engineering, and manufacturing applications where strength and durability are important. On the other hand, cold-drawn round bars are made by pulling a hot-rolled round bar through a series of dies at room temperature. This process improves the dimensional accuracy, surface finish, and mechanical properties of the steel. Cold-drawn round bars have a smoother surface texture and a more precise diameter, making them suitable for applications that require tight tolerances, such as precision machining, automotive components, and shafts for machinery. In summary, the classification of steel round bars based on their shape is determined by the manufacturing process used. Hot-rolled round bars are rougher and slightly larger in diameter, while cold-drawn round bars have a smoother surface texture and more precise dimensions. The choice between these two categories depends on the specific requirements of the application.
Q: What are the tolerance standards for steel round bars?
The tolerance standards for steel round bars vary depending on the specific requirements and industry standards. Generally, the tolerance for diameter or size of steel round bars is specified in terms of a plus or minus tolerance. This means that the actual diameter of the bar can deviate slightly from the specified size, but it should fall within the specified tolerance range. In some industries, such as construction or manufacturing, the tolerance for steel round bars may be relatively broad to allow for easier fabrication and installation. For example, a common tolerance range for the diameter of steel round bars used in construction could be ±0.005 to ±0.010 inches. In more precise applications, such as aerospace or automotive industries, the tolerance requirements for steel round bars are typically much tighter. In these cases, the tolerance range can be significantly smaller, often in the range of ±0.001 to ±0.002 inches. It is important to note that different countries and organizations may have their own specific tolerance standards for steel round bars. These standards are usually outlined in industry-specific documents or specifications, such as ASTM (American Society for Testing and Materials) or ISO (International Organization for Standardization) standards. In summary, the tolerance standards for steel round bars depend on the specific requirements of the industry and application. The tolerance range for diameter can vary from relatively broad to extremely tight, and these standards are typically defined by industry-specific organizations or standards bodies.
Q: Can steel round bars be used in the construction of bridges?
Yes, steel round bars can be used in the construction of bridges. They provide structural strength, durability, and flexibility, making them suitable for various components such as piers, beams, and reinforcements. The high tensile strength of steel round bars allows for the construction of longer and larger bridges, ensuring stability and safety. Additionally, steel is resistant to corrosion, which is crucial in bridge construction due to exposure to environmental elements.
Q: What are the different cutting methods used for steel round bars?
There are several cutting methods commonly used for steel round bars, including abrasive cutting, cold saw cutting, band saw cutting, and plasma cutting. Each method has its own advantages and suitability depending on factors such as the required precision, speed, and cost-effectiveness of the cutting process.
Q: How do you prevent steel round bars from warping during machining?
To prevent steel round bars from warping during machining, there are several measures that can be taken: 1. Proper material selection: Choose steel round bars with low residual stress and uniform internal structure. This can minimize the chances of warping during machining. 2. Pre-machining stress relief: Subject the steel round bars to stress-relieving heat treatment before machining. This process helps to release any internal stress and stabilize the material, reducing the likelihood of warping. 3. Adequate machine setup: Ensure that the machine used for machining the steel round bars is properly calibrated and aligned. Any misalignment or imbalance can induce stress and cause warping. Regular maintenance and inspection of the machine's components are essential. 4. Proper cooling techniques: During the machining process, use appropriate cooling methods to control the temperature. Excessive heat buildup can lead to thermal distortion and warping. Lubricants and coolants can be employed to dissipate heat effectively and maintain stable machining conditions. 5. Using the right cutting tools: Employ high-quality cutting tools that are specifically designed for machining steel. Dull or incorrect tools can generate excessive heat and cause warping. Regular tool inspection and replacement are necessary to ensure optimal performance. 6. Appropriate cutting parameters: Adjust the cutting parameters such as cutting speed, feed rate, and depth of cut to suitable levels for the specific steel grade and machining operation. Improper cutting parameters can generate excessive heat and contribute to warping. 7. Minimize interrupted cuts: Avoid interrupted cuts whenever possible, as they can induce stress concentrations and increase the likelihood of warping. If interrupted cuts are necessary, use proper tool entry and exit strategies to minimize stress points. 8. Post-machining stress relief: After machining, subject the steel round bars to stress-relieving heat treatment again to relieve any residual stresses induced during the machining process. This step can help to further minimize warping. By following these preventive measures, the risk of steel round bars warping during machining can be significantly reduced, ensuring high-quality and accurate machined components.
Q: How are steel round bars used in the construction of transmission towers?
Steel round bars are used in the construction of transmission towers as a primary structural component. They provide strength and stability to the tower, supporting the weight of the transmission lines and withstanding the forces of wind and other environmental factors. The round bars are typically used in the fabrication of the tower's vertical members, such as the main columns and bracing, ensuring the tower's durability and ability to transmit electrical power efficiently.
Q: What are the different types of steel round bars used in the manufacturing of cutting tools?
There are several different types of steel round bars that are commonly used in the manufacturing of cutting tools. Some of the most commonly used types include: 1. High-Speed Steel (HSS): This type of steel is known for its excellent hardness, wear resistance, and ability to retain its cutting edge at high temperatures. HSS round bars are often used in the manufacturing of drills, end mills, and other cutting tools that are used for metalworking and high-speed applications. 2. Tool Steel: Tool steel round bars are widely used in the production of cutting tools due to their high strength, toughness, and resistance to wear and deformation. Different grades of tool steel, such as D2, A2, and O1, are chosen based on the specific application and requirements of the cutting tool. 3. Carbon Steel: Carbon steel round bars are commonly used in the manufacturing of cutting tools that are designed for softer materials, such as wood and plastics. Carbon steel offers good hardness and durability, making it suitable for a wide range of cutting applications. 4. Stainless Steel: Stainless steel round bars are often used in the manufacturing of cutting tools that require high corrosion resistance and strength. Stainless steel offers good durability, toughness, and edge retention, making it a popular choice for cutting tools used in the food industry, medical field, and other applications where cleanliness and hygiene are important. 5. Alloy Steel: Alloy steel round bars are made by adding various alloying elements, such as chromium, molybdenum, and vanadium, to improve the properties of the steel. Alloy steel offers enhanced hardness, strength, and wear resistance, making it suitable for cutting tools used in demanding applications, such as machining hardened materials and high-temperature cutting. It is important to choose the appropriate type of steel round bar based on the specific requirements of the cutting tool, including the material being cut, the desired cutting speed, and the expected operating conditions.

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