S20C-B/S45C-B Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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S20C-B/S45C-B Steel Round Bar

Specifications

S20C-B/S45C-B steel round bar
Dia 18-60mm
Grade 20,45#
Standard GB,JIS,ASTM,DIN,AISI,BS
LF & VD forge;ISO&TUV approved

S20C-B/S45C-B steel round bar

Round bar steel diameter 18-60mm,material 20#,45#,55#,40CrUP,40CrUC,40Mn2,20CrMnTi,42CrMo

Rolling tube blank diameter 50-130mm.material 20#,45#,10#,35#,37Mn5,Q345,20Mn2/30Mn2,45Mn2,27SiMn

Casting round tube blank diameter160-230mm,material 20#,45#,25Mn,Q345B,20Mn2/30Mn2,45Mn2,27SiMn,33Mn2V/36Mn2V,

Bearing steel diameter18-60mm,material GCr15,Flat spring steel material 60Si2Mn,55CrMnA,50CrVA

Grade	Dia(mm)	C	Si	Mn	P	S	Ni	Cu	Cr
20	18-60	0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25
45		0.42-0.50	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25

Grade

Dia(mm)

18-60

0.17-0.23

0.17-0.37

0.35-0.65

≤0.035

≤0.30

≤0.25

0.42-0.50

0.17-0.37

0.35-0.65

≤0.035

≤0.30

≤0.25

Products

S20C-B/S45C-B Steel Round Bar

Q:Can steel round bars be used for making suspension springs?: Certainly! Suspension springs can indeed be made using steel round bars. The reason steel is often chosen as the material for suspension springs is because of its exceptional strength and durability. By forging or shaping the round bars into the desired spring shape, and subsequently subjecting them to heat treatment, the desired spring characteristics can be achieved. Moreover, steel round bars can be effortlessly machined and drilled to accommodate various suspension systems and components. Nevertheless, it is crucial to carefully consider the specific requirements and load capacity of the suspension system, in order to ensure that the selected steel round bars are appropriate for the intended application.

Q:Can steel round bars be hardened?: Yes, steel round bars can be hardened through various heat treatment processes such as quenching and tempering. This can significantly increase their strength and durability.

Q:What are the different grades of steel round bars available?: There are various grades of steel round bars available, each with different properties and applications. Some common grades include: 1. Mild Steel: This grade is the most commonly used and affordable option. It has a low carbon content and is easy to weld, cut, and form. Mild steel round bars are suitable for general construction projects, fabrication, and manufacturing. 2. Carbon Steel: With a higher carbon content than mild steel, carbon steel round bars offer greater strength and hardness. They are often used in applications that require high strength, such as machinery parts, shafts, and axles. 3. Alloy Steel: Alloy steel round bars are made by adding various alloying elements such as chromium, nickel, manganese, or molybdenum to improve specific properties. These bars offer enhanced strength, toughness, and wear resistance, making them suitable for applications like automotive parts, gears, and tools. 4. Stainless Steel: Stainless steel round bars are corrosion-resistant and have excellent mechanical properties. They are widely used in industries such as construction, food processing, and medical equipment manufacturing. Different grades of stainless steel, such as 304, 316, or 410, offer varying levels of corrosion resistance and strength. 5. Tool Steel: Tool steel round bars are specifically designed for making tools and dies. They have high hardness, wear resistance, and heat resistance properties. Tool steel grades like D2, A2, or O1 are commonly used for making cutting tools, molds, and dies. It's essential to select the appropriate grade of steel round bars based on the specific requirements of your project, considering factors such as strength, corrosion resistance, hardness, and machinability. Consulting with a steel supplier or an engineer can help identify the most suitable grade for your application.

Q:Can steel round bars be used for making gears?: Certainly! Gears can indeed be made using steel round bars. The reason for their widespread use in gear manufacturing lies in their outstanding strength, longevity, and ability to withstand damage. These bars can be processed, subjected to heat treatment, and molded into different types of gears, including spur gears, helical gears, and bevel gears. Steel round bars provide exceptional accuracy and dependability, making them ideal for applications demanding durable and high-performing gears, like automotive transmissions, industrial machinery, and power transmission systems.

Q:Can steel round bars be heat treated?: Yes, it is possible to heat treat steel round bars. Heat treatment involves controlled heating and cooling of the steel to alter its physical and mechanical properties. Various heat treatment processes can be used on steel round bars, including annealing, normalizing, quenching, and tempering. Annealing is a heat treatment method where the steel is heated to a specific temperature and held there for a certain period of time. It is then slowly cooled. This process is used to soften the steel, improve its machinability, and reduce internal stresses. Normalizing is similar to annealing, but the cooling is done in air. It is often employed to refine the grain structure of the steel and enhance its overall strength and toughness. Quenching is a rapid cooling process where the steel round bars are immersed in a quenching medium, such as oil or water, to cool them quickly. This process increases the hardness and strength of the steel. However, it also makes the steel more brittle. Therefore, it is often followed by tempering to reduce brittleness and improve toughness. Tempering involves reheating the hardened steel to a specific temperature and holding it there for a certain period of time. It is then slowly cooled. This process helps to reduce the hardness and brittleness caused by quenching, while still maintaining a desirable level of strength and toughness. In summary, heat treatment is a versatile process that can be applied to steel round bars to achieve a wide range of desired properties, such as hardness, strength, toughness, and machinability.

Q:Can steel round bars be used for making automotive chassis?: Certainly, automotive chassis can be constructed using steel round bars. Due to its impressive strength and durability, steel is a prevalent material in the production of automotive chassis. The utilization of round bars made from steel ensures outstanding structural integrity, allowing them to endure the immense loads and forces that a vehicle's chassis encounters. Moreover, incorporating steel round bars in automotive chassis contributes to enhancing the overall safety of the vehicle by providing a robust and inflexible frame. Furthermore, steel is reasonably affordable and easily accessible, rendering it a favored selection for automotive manufacturers.

Q:Can steel round bars be used in the automotive manufacturing?: Yes, steel round bars can be used in automotive manufacturing. Steel round bars offer high strength and durability, making them suitable for various automotive components such as crankshafts, camshafts, axles, and suspension parts. They also provide excellent machinability and can be easily fabricated into the required shapes and sizes, making them a preferred choice in the automotive industry.

Q:What are the considerations for selecting the right steel grade for a round bar?: There are various factors to consider when choosing the appropriate steel grade for a round bar. To begin with, the intended application of the round bar should be taken into account. Different steel grades possess distinct properties that make them suitable for specific purposes. For instance, stainless steel or high-alloy steel, which have exceptional heat resistance, would be ideal for use in high-temperature environments. Conversely, carbon steel, with its good strength and ductility, may be more appropriate for structural applications. Another factor to consider is the desired mechanical properties of the round bar, including tensile strength, yield strength, hardness, and toughness. These properties can vary significantly among different steel grades, so it is crucial to select a grade that meets the specific requirements of the application. Corrosion resistance is also an important consideration. If the round bar will be exposed to corrosive environments, such as in marine or chemical applications, it is advisable to choose a stainless steel grade with high resistance to corrosion. On the other hand, if corrosion resistance is not a major concern, a carbon steel grade may be more cost-effective. Cost is another factor to be taken into account. Different steel grades have varying costs based on availability, demand, and manufacturing processes. It is important to strike a balance between the desired properties of the round bar and the available budget to ensure cost-effectiveness. Moreover, the manufacturability of the steel grade should be considered. Some steel grades may be more challenging to machine or weld, which can impact the production process and cost. It is crucial to select a readily available steel grade that can be easily processed to meet the required specifications. Finally, it is always advisable to seek guidance from steel suppliers, engineers, or metallurgists to ensure that the chosen steel grade aligns with the specific requirements of the application. Their expertise and experience in the industry can provide valuable insights and recommendations.

Q:Can steel round bars be used for making electrical system components?: Certainly! Steel round bars have the potential to be utilized in the production of electrical system components. Steel, being a versatile material with a wide range of applications across different industries, including electrical engineering, offers the possibility of being used in specific sections of an electrical system. While materials such as copper are commonly preferred for electrical components due to their superior electrical conductivity, steel can still be employed for certain parts of the system. Structural components, supports, enclosures, or mounting brackets for electrical devices are examples of uses for steel round bars. Furthermore, steel's durability, strength, and resistance to corrosion make it an appropriate option for electrical system components that require a sturdy construction or protection against environmental factors. However, it is important to acknowledge that steel is not as efficient a conductor of electricity as materials like copper or aluminum, meaning it may not be suitable for components that necessitate high electrical conductivity.

Q:What are the common defects found in steel round bars?: Steel round bars may possess several common defects, including surface cracks, internal voids, inclusions, segregation, and dimensional variations. Surface cracks can arise from manufacturing processes or improper handling and transportation, resulting in compromised structural integrity and reduced load-bearing capacity. Internal voids, also known as blowholes or cavities, emerge as empty spaces within the steel caused by trapped gases during solidification. These voids can detrimentally affect the mechanical properties of the bar, rendering it more susceptible to failure under stress. Inclusions, non-metallic particles or impurities, may be present in the steel. They may originate from raw materials used in production or contaminants introduced during manufacturing. Inclusions diminish the strength and ductility of the steel and can serve as starting points for cracks. Segregation refers to the uneven distribution of elements within the steel. It can occur during solidification, leading to areas of the bar with distinct chemical compositions. Consequently, variations in mechanical properties, such as hardness and toughness, arise, resulting in inconsistent performance. Defects can also manifest as dimensional variations, such as out-of-roundness or fluctuations in diameter. These variations impact the bar's fit and functionality, especially in applications requiring precise dimensions. To ensure the quality and reliability of steel round bars, particularly in applications demanding high strength and performance, it is crucial to identify and rectify these defects. Regular inspections, implementation of quality control measures, and adherence to industry standards and specifications aid in minimizing these defects and upholding the integrity of steel round bars.

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