Hot rolled, forged, QT heat treatment and normalizing
6. Payment term
T/T, L/C or we can negotiate.
7. Delivery time
20days after the order confirmed
8. Characteristics
1) The strength and hardness of S20C/ 1020/ 20 is higher than that of S15C/ 1015/ 15.
2) Good plasticity and weldability.
3) Good toughness after hot rolling and normalization.
9. Application
S20C structural carbon steel bar /1020 /20 can be used to be manufactured medium or small carburization or nitrocarburizing parts and press forging parts, such as lever shaft, selector fork of speed changing box, gear, heavy mechanical lever and shackle, etc.
Products Show
Product Overviews
Product Name
Typical Grades
Diameter(mm)
Standard adopted
Carbon Steel
20 (1020/S20C/C22)
Ø16-Ø300
GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel
GCr9 (51100/SUJ1)
Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel
20Cr (5120/SCr420H/20Cr4)
Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel
20CrNiMo
Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)
Application
Carbon Steel
Mold bottom, Plastic mold, Construction machinery parts
Automobile parts, Security grills, Screens, Construction
Bearing Steel
Aerospace, Navigation, Nuclear energy, Chemical industry
Electronic information, Petrochemical, Instrument and meter
Transportation
Cr-Mo Steel
Mechanism & Fasteners gear, Stressed components for vehicles
Q: What is the cost of steel round bars?
The price of steel round bars may differ based on various factors, including the steel grade, bar size, and purchase quantity. Typically, market conditions play a significant role in determining the price, leading to fluctuations over time. To obtain the most accurate and current pricing information, it is advisable to reach out to local steel suppliers or explore online platforms specializing in steel products. Moreover, it is essential to consider additional factors like transportation and handling expenses, as they can impact the ultimate cost.
Q: How are steel round bars heat treated?
To enhance the strength and hardness of steel round bars, as well as improve their mechanical properties, they undergo a heat treatment process comprising of three main steps: heating, soaking, and cooling.
To begin with, the steel round bars are subjected to heating at a specific temperature referred to as the austenitizing temperature. This temperature is typically higher than the critical temperature of the steel, enabling the material to transform into its austenite phase. The exact austenitizing temperature varies depending on the type of steel and the desired properties.
Once the steel round bars reach the austenitizing temperature, they are then soaked at this temperature for a specific duration. This soaking period ensures a complete transformation of the microstructure, promoting uniformity and preventing any thermal gradients within the material. The duration of soaking plays a vital role in determining the ultimate properties of the steel.
After the soaking phase, the steel round bars undergo rapid cooling through a process known as quenching. Quenching is typically achieved by immersing the bars in a quenching medium, such as oil, water, or air, depending on the desired hardness and properties. The quenching process swiftly cools the bars, resulting in a martensitic transformation within the steel's microstructure. This transformation contributes to increased hardness and strength.
Subsequently, the steel round bars may undergo an additional step called tempering. Tempering involves reheating the bars to a lower temperature, usually below the austenitizing temperature. This step aims to alleviate the brittleness caused by the quenching process while further enhancing the material's toughness and ductility.
In summary, the heat treatment process for steel round bars involves heating to the austenitizing temperature, soaking for a specific duration, quenching to rapidly cool and harden the material, and potentially tempering to achieve the desired properties. This process allows for the customization and improvement of the steel's mechanical properties, making it suitable for a wide range of applications.
Q: Can steel round bars be used for making tools or machinery parts?
Yes, steel round bars can be used for making tools or machinery parts. Steel round bars are known for their high strength, durability, and resistance to wear and tear. These properties make them ideal for applications in the manufacturing of tools and machinery parts that require high strength and reliability. Steel round bars can be machined, forged, or heat-treated to achieve the desired shape and properties required for specific tools or machinery parts. Additionally, steel round bars come in various grades, each with its own specific properties, allowing manufacturers to select the most suitable grade for their specific application. Overall, steel round bars are a versatile and commonly used material in the manufacturing industry for making tools and machinery parts.
Q: How are steel round bars used in the automotive industry?
Steel round bars are commonly used in the automotive industry for a variety of applications due to their strength, durability, and versatility. One of the main uses of steel round bars in the automotive industry is for the production of crankshafts. Crankshafts play a crucial role in converting the reciprocating motion of the pistons into rotational motion, powering the vehicle. Steel round bars are ideal for this application as they offer high tensile strength, excellent fatigue resistance, and the ability to withstand high torque loads.
Steel round bars are also used in the manufacturing of axles. Axles are responsible for transferring power from the engine to the wheels, supporting the weight of the vehicle, and providing stability. Steel round bars provide the necessary strength and rigidity required to handle the heavy loads and forces experienced by the axles.
Additionally, steel round bars are utilized in the production of suspension components such as tie rods and sway bars. Tie rods are crucial for steering and maintaining proper alignment, while sway bars help to control body roll and improve handling. Steel round bars are preferred for these applications because they offer excellent torsional strength, allowing them to withstand the forces and stresses encountered during steering and suspension movements.
Furthermore, steel round bars find use in the production of transmission shafts. Transmission shafts are responsible for transmitting power from the engine to the wheels via the gearbox. Steel round bars are well-suited for this application due to their high strength, resistance to bending, and ability to handle the rotational forces and torque generated by the engine.
In summary, steel round bars are widely used in the automotive industry for various applications such as crankshafts, axles, suspension components, and transmission shafts. Their superior strength, durability, and versatility make them an ideal choice for these critical components, ensuring the safety, performance, and reliability of vehicles.
Q: Can steel round bars be used for making fasteners or bolts?
Yes, steel round bars can be used for making fasteners or bolts. Steel round bars are often used as raw materials for manufacturing fasteners and bolts due to their high strength, durability, and resistance to deformation. They can be shaped, threaded, and heat-treated to meet the specific requirements of fasteners and bolts.
Q: Can steel round bars be used in the production of electrical equipment?
Yes, steel round bars can be used in the production of electrical equipment. Steel is a versatile material with various properties that make it suitable for different applications, including electrical equipment. Steel round bars can be used to manufacture components such as shafts, connectors, and structural supports in electrical equipment. The strength and durability of steel make it a reliable choice for these applications, as it can withstand the mechanical stresses and environmental conditions that electrical equipment may be exposed to. Additionally, steel can provide good electrical conductivity and magnetic properties, which are important characteristics for certain electrical components. However, it is worth noting that steel round bars may need to undergo additional processes such as machining, heat treatment, or surface finishing to meet specific requirements for electrical equipment production.
Q: What are the advantages of using vanadium-alloy steel round bars?
Vanadium-alloy steel round bars offer numerous benefits. Firstly, they possess significantly enhanced strength and toughness compared to regular steel, making them ideal for applications requiring durability and high strength, such as construction, manufacturing, and engineering projects. The inclusion of vanadium improves the steel's ability to withstand heavy loads, impacts, and extreme temperatures, enabling it to thrive in demanding environments.
Secondly, vanadium-alloy steel round bars display exceptional resistance to corrosion. The vanadium creates a protective oxide layer on the steel's surface, preventing rusting and corrosion. Consequently, these bars have impressive longevity, even in harsh or corrosive surroundings.
Moreover, vanadium-alloy steel exhibits excellent weldability and machinability. It can be effortlessly welded, facilitating efficient fabrication and construction processes. Additionally, its machinability allows for precise shaping and forming, making it adaptable to various design requirements.
Furthermore, vanadium-alloy steel excels in wear resistance. This quality is particularly advantageous in applications where the bars face high levels of friction, abrasion, or wear, such as mining or manufacturing equipment. The addition of vanadium enhances the steel's hardness and wear resistance, thereby extending the lifespan of the bars and reducing maintenance costs.
Lastly, vanadium-alloy steel demonstrates exceptional heat resistance. It can endure high temperatures without compromising its strength or structural integrity. Consequently, it is suitable for applications involving exposure to extreme heat, such as automotive engines, turbines, or power generation equipment.
In conclusion, the utilization of vanadium-alloy steel round bars provides a range of advantages, including increased strength and toughness, corrosion resistance, ease of welding and machining, impressive wear resistance, and high heat resistance. These qualities establish vanadium-alloy steel round bars as a dependable and versatile choice for various applications.
Q: How do steel round bars compare to plastic round bars?
When comparing steel round bars and plastic round bars, it is important to note several key differences that impact their performance and suitability for different applications.
Strength and durability play a significant role in determining the ideal choice for specific applications. Steel round bars are renowned for their exceptional strength and durability, making them perfect for applications that require high load-bearing capacity. They can withstand heavy loads without deforming or breaking. Conversely, plastic round bars are generally less strong and durable, making them more suitable for lighter applications where strength is not the primary concern.
Weight is another factor to consider. Steel round bars are considerably heavier than plastic round bars due to differences in material density. This can be advantageous in applications where additional weight is desired for stability or balance. Conversely, plastic round bars are lighter and can offer benefits in weight reduction, which is particularly important in industries like aerospace or automotive.
Corrosion resistance is a crucial consideration, especially in harsh environments or areas exposed to moisture. Steel round bars, particularly those made from stainless steel, are known for their excellent corrosion resistance. This makes them suitable for outdoor or corrosive environments. Conversely, plastic round bars are generally more susceptible to degradation caused by UV radiation, chemicals, or extreme temperatures. Consequently, they may not be as suitable for outdoor or corrosive environments.
Versatility is yet another aspect to evaluate. Steel round bars offer a wide range of options in terms of size, shape, and grade. They can be machined, welded, bent, or shaped to suit various applications. While plastic round bars also come in different shapes and sizes, their versatility is somewhat limited compared to steel. They may not be as easily machined or welded, and their performance can be affected by temperature fluctuations.
Cost is a significant factor to consider. Steel round bars are generally more expensive due to the higher costs associated with raw materials and manufacturing processes. On the other hand, plastic round bars are more affordable and can provide cost savings in certain applications.
In conclusion, steel round bars offer superior strength, durability, and corrosion resistance, making them ideal for heavy-duty applications. Plastic round bars, on the other hand, are lighter, more affordable, and can be advantageous in applications where weight reduction is important. Ultimately, the choice between steel and plastic round bars depends on the specific requirements of the application and the trade-offs between strength, weight, cost, and corrosion resistance.
Q: Can steel round bars be used in the oil and gas industry?
Indeed, the oil and gas industry finds great utility in steel round bars. These bars find widespread application across various sectors within the industry, encompassing drilling, production, and transportation of oil and gas. Their exceptional durability and high strength render them well-suited for enduring the arduous and demanding conditions typically encountered in this sector. They play a crucial role in the construction of drilling equipment, such as drill collars and drill pipes, along with the production of valves, pumps, and other vital components. Moreover, steel round bars contribute to the fabrication of pipelines and offshore platforms, wherein they provide structural support and guarantee the integrity of the infrastructure. All in all, the oil and gas industry deems steel round bars indispensable due to their robustness, dependability, and capacity to withstand the challenging environments encountered within this sector.
Q: How do you prevent steel round bars from rusting during transportation?
There are several effective measures that can be taken to prevent rusting of steel round bars during transportation.
Firstly, it is crucial to properly package the steel round bars. This involves securely wrapping and sealing them using moisture-resistant materials like plastic or shrink wrap. This packaging will act as a barrier against moisture and prevent direct contact with air.
Secondly, the inclusion of desiccants inside the packaging can help absorb any moisture that may be present. Desiccants such as silica gel packets or moisture-absorbing clay will create a dry environment around the steel bars, reducing the chances of rust formation.
Another effective method is to use VCI (Volatile Corrosion Inhibitor) packaging. VCI materials release a protective vapor that forms a thin layer on the steel surface, inhibiting corrosion. VCI films or papers can be utilized to wrap the steel round bars, providing long-lasting rust protection.
Proper storage conditions are also crucial during transportation. The steel round bars should be stored in a dry and well-ventilated environment, away from rain, humidity, and extreme temperature fluctuations. If possible, they should be stored in a covered and climate-controlled area to minimize the risk of rust formation.
Regular inspection and maintenance of the steel round bars during transportation is essential. This ensures that the packaging remains intact and no moisture has seeped in. If any damage or signs of moisture are detected, immediate action should be taken to rectify the issue and prevent rust from spreading.
By implementing these preventive measures, the risk of rust formation on steel round bars during transportation can be significantly reduced, guaranteeing that they arrive at their destination in optimal condition.
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