Hot Rolled Carbon Steel Round Bars S20C
- Ref Price:
-
- 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 S20C
Product Specification
1, Chemical Composition %
| Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
| S20C | 0.08-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.25 | ≤0.25 |
2, Mechanical Properties
| Strength of Extension σb | Yield Strength σs | Elogation δ5 |
| ≥245 Mpa | ≥245 Mpa | ≥28% |
3, Diameter: 16mm - 300mm
Length: Max 12m
Application
Can be used to manufacture all kinds of machine parts with high tenacity but won't be subjected to large stress.
Can be used to manufacture carburizing and carbonitriding parts with high surface hardness in general machinery and automobile, agricultural machinery.
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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- Q: What are the different types of steel round bars used in the manufacturing of valves and fittings?
- There are several types of steel round bars commonly used in the manufacturing of valves and fittings, including carbon steel round bars, stainless steel round bars, and alloy steel round bars. These different types of steel offer varying levels of strength, corrosion resistance, and durability, allowing manufacturers to choose the most suitable material for their specific application requirements.
- Q: What is the difference between a hot-rolled and a ground steel round bar?
- A hot-rolled steel round bar is produced through a process called hot rolling, where the steel is heated above its recrystallization temperature and then passed through rollers to achieve the desired shape and size. This method results in a rough surface finish with a scaled or uneven texture. Hot-rolled steel round bars are commonly used in construction, manufacturing, and general fabrication applications where a smooth finish is not a primary concern. On the other hand, a ground steel round bar undergoes a process called grinding after the initial hot rolling. Grinding involves removing the outer layer of the hot-rolled bar to create a smooth and consistent surface finish. This process eliminates any imperfections, such as scale or unevenness, to provide a more precise and refined product. Ground steel round bars are often utilized in applications where a smooth surface finish is crucial, such as in machining, toolmaking, and precision engineering. In summary, the main difference between a hot-rolled and a ground steel round bar lies in the surface finish. Hot-rolled bars have a rough and uneven texture, while ground bars have a smooth and consistent surface. The choice between the two depends on the specific application and the desired level of surface finish required.
- Q: What is the difference between a forged and a ground steel round bar?
- A forged steel round bar and a ground steel round bar differ primarily in their manufacturing processes and resulting characteristics. A forged steel round bar is created by heating the steel to a high temperature and then shaping it using mechanical pressure, usually through a hammer or press. This process aligns the steel's grain structure, making it stronger and more durable. Forged steel round bars are known for their excellent strength, impact resistance, and overall toughness. They are commonly used in applications that require high strength, such as heavy machinery, automotive parts, and construction equipment. On the other hand, a ground steel round bar is manufactured through a grinding process. After the steel is initially shaped, it undergoes precision grinding to achieve the desired dimensions and surface finish. This process removes any imperfections or irregularities on the surface, resulting in a smooth and polished appearance. Ground steel round bars are often used in applications that require precise dimensions, such as shafts, axles, and precision tools. In summary, the main difference between a forged and a ground steel round bar lies in their manufacturing processes and resulting properties. A forged steel round bar offers superior strength and toughness due to its grain structure alignment, making it suitable for heavy-duty applications. On the other hand, a ground steel round bar is known for its precise dimensions and polished surface finish, making it ideal for applications that require precision.
- Q: Can steel round bars be extruded?
- Steel round bars cannot be extruded; instead, they are typically produced through a different process called hot rolling. In hot rolling, a cylindrical billet is heated and passed through a series of rollers to achieve the desired diameter and length. Extrusion, on the other hand, is a manufacturing process that involves forcing material through a die to create specific shapes or profiles. While steel can be extruded into various shapes such as tubes, channels, or angles, round bars are not typically produced in this way.
- Q: What are the environmental considerations of steel round bars?
- Steel round bars have several environmental considerations. Firstly, the production of steel involves the extraction of iron ore, which can have negative impacts on ecosystems and habitats. The mining process can lead to deforestation, soil erosion, and the release of harmful pollutants into the air and water. Additionally, the manufacturing of steel round bars requires a significant amount of energy, which often comes from non-renewable sources such as coal and natural gas. The burning of fossil fuels for energy contributes to greenhouse gas emissions and climate change. The steel industry is one of the largest emitters of carbon dioxide globally. Furthermore, the transportation of steel round bars can also have environmental consequences. The long-distance shipping of steel products contributes to carbon emissions and air pollution. This is especially significant when steel is imported or exported over large distances. However, it is important to note that steel is a highly recyclable material. Recycling steel reduces the need for new production, conserves energy, and decreases the environmental impacts associated with mining and extraction. By choosing steel round bars made from recycled steel, individuals and industries can contribute to a more sustainable and environmentally-friendly approach. Overall, the environmental considerations of steel round bars include the impacts of mining and extraction, energy consumption during production, and transportation emissions. However, the recyclability of steel offers an opportunity to minimize these environmental impacts and promote a more sustainable steel industry.
- Q: How do you calculate the strength of a steel round bar?
- To calculate the strength of a steel round bar, several factors need to be considered. The primary factor is the material's yield strength, which represents the stress level at which the steel begins to deform permanently. This value is typically provided by the manufacturer or can be found in engineering handbooks. Next, the cross-sectional area of the round bar needs to be determined. This can be done by measuring the diameter of the bar and using it to calculate the area using the formula A = πr^2, where A is the cross-sectional area and r is the radius. Once the cross-sectional area is known, the ultimate tensile strength (UTS) can be calculated using the formula UTS = Yield Strength / Safety Factor. The safety factor is a numerical value that accounts for uncertainties and potential variations in the material's strength. It is typically specified by the design requirements or industry standards. Finally, the maximum load that the steel round bar can withstand before failure can be determined by multiplying the ultimate tensile strength by the cross-sectional area. This value represents the strength of the round bar and can be used to assess its suitability for a particular application. It is important to note that other factors such as the bar's length, shape, and any additional treatments or modifications can also affect its strength. Therefore, consulting with a structural engineer or referring to relevant design codes and standards is recommended to ensure accurate calculations and safe application of steel round bars.
- Q: Can steel round bars be used for making shock absorber components?
- Yes, steel round bars can be used for making shock absorber components. Steel is a common material choice for shock absorber components due to its strength, durability, and ability to withstand high levels of stress and impact. The round shape of the bars also allows for easy machining and fabrication of the necessary components.
- Q: How are steel round bars manufactured?
- Steel round bars are typically manufactured through a process known as hot rolling, where a large steel billet is heated and passed through a series of rollers which gradually shape and size it into a round bar. This process ensures the bar's uniformity, strength, and durability, making it suitable for various applications in industries such as construction, manufacturing, and engineering.
- Q: Are steel round bars suitable for electrical applications?
- Depending on specific requirements and conditions, steel round bars may be a suitable choice for electrical applications. Steel is well-known for its excellent conductivity, strength, and durability, making it a popular option for various electrical uses. However, before using steel round bars in electrical applications, it is crucial to take into account several factors. Firstly, while steel is a decent conductor, it is not as efficient as materials like copper or aluminum. Therefore, utilizing steel in electrical applications may lead to higher resistance and energy loss compared to these more conductive alternatives. Moreover, steel round bars might be susceptible to corrosion, particularly in humid or corrosive environments. This corrosion can significantly impact the overall performance and lifespan of the electrical system. To mitigate this issue, proper insulation or protective coatings may be necessary to prevent corrosion and ensure the reliability of the electrical application. To summarize, although steel round bars possess conductivity, strength, and durability that make them suitable for electrical applications, it is crucial to consider factors such as conductivity, corrosion resistance, and overall system requirements before employing them.
- Q: What are the different surface treatments available for alloy steel round bars?
- There are several different surface treatments available for alloy steel round bars. Some of the most common treatments include: 1. Hot-dip galvanizing: This process involves dipping the steel bars into a bath of molten zinc, which creates a protective coating on the surface. This treatment helps to prevent rust and corrosion. 2. Electrogalvanizing: Similar to hot-dip galvanizing, electrogalvanizing also involves applying a layer of zinc to the surface of the steel bars. However, in this process, an electric current is used to deposit the zinc onto the steel. 3. Nitriding: Nitriding involves exposing the steel bars to a nitrogen-rich environment at high temperatures. This treatment forms a hard, wear-resistant layer on the surface of the bars, enhancing their strength and durability. 4. Chrome plating: Chrome plating is a process in which a thin layer of chromium is applied to the surface of the steel bars. This treatment provides excellent corrosion resistance and enhances the aesthetic appearance of the bars. 5. Powder coating: Powder coating involves applying a dry powder to the surface of the steel bars, which is then cured through a heating process. This treatment creates a durable and attractive finish, offering protection against corrosion, chemicals, and UV rays. 6. Polishing: Polishing is a process that involves mechanically smoothing and shining the surface of the steel bars. This treatment enhances the visual appeal of the bars and improves their resistance to corrosion. These are just a few of the many surface treatments available for alloy steel round bars. The choice of treatment will depend on the specific requirements of the application, including factors such as desired appearance, corrosion resistance, and wear resistance.
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Hot Rolled Carbon Steel Round Bars S20C
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 120000 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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