Carbon Structural Steel Round Bars ST37-2CR
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 120000 m.t./month
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Carbon Structural Steel Round Bars ST37-2CR
Product Specification
1, Chemical Composition %
| Grade | C | Si | Mn | S | P | Cr |
| ST37-2CR | 0.21-0.25 | ≤0.35 | ≤1.4 | ≤0.045 | ≤0.045 | ≥0.30 |
2, Mechanical Properties
| Strength of Extension σb | Yield Strength σs | Impact AKv |
| 340-470 Mpa | ≥235 Mpa | ≥27J |
3, Diameter: 9mm - 80mm
Application
1, Widely used in construction and engineering structure.
2, Widely used in making reinforcing steel bar or building plant room rack, high voltage transmission tower, bridge, vehicle, boiler, vessel, ship, etc.
3, Widely used in manufacturing mechanical parts which are not required to be with high performance.
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 is the difference between seamless and welded steel round bars?
- Seamless and welded steel round bars differ primarily in the manufacturing process and the resulting characteristics of the final product. Seamless steel round bars are manufactured by piercing a solid billet of steel to create a hollow tube. This tube is then elongated and further processed to achieve the desired dimensions and surface finish. The seamless manufacturing process ensures that there are no welds or joints along the length of the bar. As a result, seamless steel round bars have a uniform composition and structure throughout, providing excellent strength and reliability. They are often preferred when high pressure or high-temperature applications are involved, as they offer better resistance to internal and external pressure. On the other hand, welded steel round bars are made by joining two or more pieces of steel together through welding techniques. This involves heating the ends of the steel pieces and fusing them together using various welding methods, such as arc welding, resistance welding, or fusion welding. The welding process introduces a weld seam along the length of the bar, which can affect its structural integrity and mechanical properties. Welded steel round bars may have slightly lower strength and toughness compared to seamless bars, as the presence of the weld seam can create stress concentrations. However, they are generally more cost-effective and readily available in a wide range of sizes and grades. In summary, the main difference between seamless and welded steel round bars lies in their manufacturing process and resulting characteristics. Seamless bars are produced by piercing a solid billet, offering uniform composition and strength throughout, making them suitable for high-pressure and high-temperature applications. Welded bars, on the other hand, are created by joining multiple pieces of steel through welding, introducing a weld seam that can slightly affect their strength and toughness. Welded bars are often more cost-effective and readily available in various sizes and grades.
- Q: Are steel round bars available in different surface finishes?
- Yes, steel round bars are available in different surface finishes. The surface finish of a steel round bar refers to the treatment or coating applied to the surface to enhance its appearance, protect it from corrosion, or improve its performance in specific applications. Common surface finishes for steel round bars include polished, brushed, mill finish, galvanized, and coated with materials like chrome, nickel, or zinc. These different surface finishes cater to various requirements and preferences in terms of aesthetics, protection against corrosion, and functionality in different industries and applications.
- Q: What is the difference between a centerless ground and a precision ground steel round bar?
- A centerless ground steel round bar is manufactured by grinding the outer diameter of the bar using a centerless grinding machine. This process ensures that the bar has a consistent diameter throughout its length, with tight tolerances for dimensional accuracy. On the other hand, a precision ground steel round bar is typically manufactured using a different grinding method where the bar is held between centers and ground to achieve precise dimensions and surface finish. This process allows for even tighter tolerances and finer surface finishes than centerless grinding. In summary, while both centerless ground and precision ground steel round bars offer dimensional accuracy, the precision ground bar provides even tighter tolerances and superior surface finish due to the use of a different grinding method.
- Q: Can steel round bars be used for making springs or suspension components?
- Yes, steel round bars can be used for making springs or suspension components. Steel is a commonly used material for these applications due to its high strength and durability. The round bar shape allows for easy fabrication and customization according to the specific requirements of the springs or suspension components.
- Q: Requirements for groove welding of grade 22mm round steel and manual arc welding
- Chamfer or breach can also be used in grinding machine, notice groove surface cleaning with carbon or gas cutting, consider the parent material selection process, such as carbon will carburizing etc.
- Q: Can steel round bars be coated or plated?
- Yes, steel round bars can be coated or plated using a variety of methods such as electroplating, hot-dip galvanizing, or powder coating. Coating or plating steel round bars helps to enhance their corrosion resistance, improve their appearance, and provide additional durability and protection.
- Q: What are the advantages of using nickel-lead alloy steel round bars?
- There are several advantages of using nickel-lead alloy steel round bars. Firstly, these bars have excellent corrosion resistance properties, making them suitable for applications in harsh environments or corrosive substances. Secondly, the addition of nickel and lead enhances the machinability of the bars, allowing for easier shaping and forming processes. Additionally, nickel-lead alloy steel round bars exhibit good strength and durability, making them suitable for high-stress applications. Lastly, these bars offer good thermal and electrical conductivity, making them ideal for applications that require heat transfer or electrical conduction.
- Q: What are the different types of steel round bars used in the automotive drivetrain systems?
- There are several types of steel round bars commonly used in automotive drivetrain systems, including alloy steel, carbon steel, and stainless steel. These bars are chosen based on their specific properties and characteristics, such as strength, durability, and resistance to corrosion. The selection of the type of steel round bar depends on the specific application and requirements of the drivetrain system.
- Q: Can steel round bars be used in the hydraulic industry?
- Certainly, the hydraulic industry can make use of steel round bars. Renowned for their robustness, endurance, and immunity to corrosion, steel round bars prove to be ideal for a wide range of applications within the hydraulic industry. They find utility in the production of hydraulic cylinders, pistons, and other components necessitating exceptional tensile strength and dependability. Moreover, steel round bars can be conveniently machined and fashioned into diverse dimensions and specifications, ensuring they align with the precise requirements of hydraulic systems. In essence, owing to their exceptional mechanical characteristics and adaptability, steel round bars remain a favored choice in the hydraulic industry.
- Q: How do steel round bars perform under impact or shock loading?
- Steel round bars exhibit exceptional performance when subjected to impact or shock loading. Their high strength and toughness enable them to withstand sudden forces, preventing deformation or failure. The inherent properties of steel, including its hardness and ductility, contribute to its capacity to absorb and distribute energy throughout the material, thereby minimizing the impact on the structure. When impacted or subjected to shock loading, steel round bars undergo plastic deformation, allowing them to absorb and dissipate applied energy without fracturing. This ability to absorb energy is vital in various industries, such as construction, automotive, and machinery, where components frequently experience dynamic loads. Furthermore, steel's excellent fatigue resistance further enhances its performance under impact or shock loading. Even when repeatedly exposed to impacts, steel round bars can endure cyclic loading without experiencing significant degradation in their mechanical properties. Moreover, steel round bars can be further improved through various heat treatment processes, such as quenching and tempering, which refine the steel's microstructure, resulting in increased strength, toughness, and hardness. In conclusion, steel round bars exhibit remarkable performance when subjected to impact or shock loading. Their high strength, toughness, and energy absorption capabilities make them reliable and widely utilized in applications where sudden forces or dynamic loads are anticipated.
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Carbon Structural Steel Round Bars ST37-2CR
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 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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