Steel Round Bar Reliable Manufacturer from China
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 221 m.t.
- Supply Capability:
- 200334443 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
You Might Also Like
Description of steel round bar:
1. Commodity: Round steel bar
3. Technical: Hot rolling
2. Length: Min. 5.8meter, according to requirement.
3. Diameter: 16mm-250mm
5. Packing: In Bundle or according to your requirements.
Festures of steel round bar:
1.Dia 80-800mm Length:2000-13000mm or as required
2.Technique:Forged
3. Annealing after forging:heat to 840-860°c,keep 2-4H,coolbelow to 500°c,hardness≤285HBS. Isothermal annealing after forging:heat to 540-860°c,keep temperature 2-4H,furnacecold to 740-760°c,keep temperature 4-6H,to 500°c,hardness≤255HBS.
Specifications of steel round bar:
1. Standards: AISI 4340 8620 8640 4320 , JIS SNCM8 GB:40CrNiMoA
2. Specification: Dia: 80~450mm Length:2000-13000mm or as required
3. Process: EAF+LF+VD ( necessary) UT+ Peeled +Turned + Heat Treatment (optional)
4. Chemical Composition (%):
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.40-0.80 | 0.025(max) | 0.025(max) | 0.60-0.90 | 1.25-1.65 | 0.025(max) | 0.15-0.25 |
Images of steel round bar:
FAQ:
1. What is your package?
Packing situation: standard seaworthy packing or as customer required.
2. How long is the lead time?
Delivery time: 45 days after order confirmed.
3. What payment term do you accept?
Payment: T/T or L/C at sight.
- Q: What are the advantages of using high-speed steel round bars?
- High-speed steel (HSS) round bars have several advantages. Firstly, they offer excellent hardness, allowing them to withstand high temperatures and wear. This makes them suitable for cutting tools and machine parts that undergo intense friction and heat. Additionally, HSS round bars have superior toughness, enabling them to resist chipping and breaking during heavy-duty applications. Furthermore, their high thermal conductivity helps dissipate heat efficiently, preventing damage to the material being worked on and prolonging tool life. Lastly, HSS round bars have good dimensional stability, ensuring accurate and precise machining results.
- Q: What is the difference between a bright and a cold finished steel round bar?
- Two distinct types of steel bars are the bright steel round bar and the cold finished steel round bar. These bars differ in their manufacturing processes and resulting characteristics. The bright steel round bar, also known as a turned or polished bar, undergoes a process called turning or polishing. During this process, a lathe machine rotates the rough steel bar while a cutting tool removes its outer layer. This results in a smooth and shiny surface, enhancing the bar's appearance, dimensional accuracy, and surface finish. Bright steel round bars are commonly used in applications where aesthetics and a high-quality surface finish are important, such as architectural components, decorative items, and certain automotive parts. On the other hand, the cold finished steel round bar undergoes a different manufacturing process called cold drawing or cold rolling. This process involves passing the hot-rolled steel bar through a series of dies at room temperature. As a result, the bar's diameter is reduced while its length is increased. This cold working process improves the mechanical properties of the steel bar, including increased tensile strength, improved yield strength, and enhanced dimensional accuracy. Cold finished steel round bars are often used in applications that require high strength and precision, such as shafts, gears, bolts, and tools. In conclusion, the main distinction between the bright steel round bar and the cold finished steel round bar lies in their manufacturing processes and resulting characteristics. The bright steel round bar is turned or polished to achieve a smooth and shiny surface, while the cold finished steel round bar undergoes cold drawing or rolling to enhance its mechanical properties and dimensional accuracy. The choice between these two types of steel bars depends on the specific requirements of the application, such as the need for aesthetics, surface finish, strength, or precision.
- Q: What are the advantages of using sulfur-alloy steel round bars?
- There are several advantages to using sulfur-alloy steel round bars. Firstly, sulfur-alloy steel round bars have improved machinability compared to other types of steel. The addition of sulfur to the alloy reduces the friction between the tool and the workpiece, resulting in smoother cutting and lower cutting forces. This makes it easier and more efficient to machine the steel, saving time and reducing costs. Secondly, sulfur-alloy steel round bars have enhanced chip-breaking properties. The sulfur content promotes the formation of small, brittle sulfide inclusions within the steel, which act as chip breakers during machining. These inclusions help to break the chips into smaller pieces, preventing them from tangling and causing issues such as built-up edges or poor surface finish. Another advantage of sulfur-alloy steel round bars is their improved surface finish. The sulfur content in the alloy helps to reduce the occurrence of built-up edges or burrs during machining. This results in a smoother and more precise surface finish, which is particularly important for applications where aesthetics or tight tolerances are required. Additionally, sulfur-alloy steel round bars offer good wear resistance. The sulfur content in the alloy forms hard sulfide inclusions, which help to improve the hardness and wear resistance of the steel. This makes it suitable for applications where the round bars will be subjected to abrasive wear, such as in the manufacturing of gears or bearings. Lastly, sulfur-alloy steel round bars are often more cost-effective compared to other high-performance alloys. The addition of sulfur is a relatively inexpensive process, making sulfur-alloy steel a more affordable option for many applications. This makes it an attractive choice for industries that require high-quality steel but are conscious of costs. Overall, the advantages of using sulfur-alloy steel round bars include improved machinability, enhanced chip-breaking properties, better surface finish, good wear resistance, and cost-effectiveness. These benefits make sulfur-alloy steel round bars a popular choice in various industries, including automotive, aerospace, and manufacturing.
- Q: What are the different specifications for steel round bars?
- Steel round bars can be described using various specifications, including diameter, length, tolerance, and grade. The diameter determines the bar's size and is typically measured at its widest point. Diameters range from 1/4 inch to 12 inches, with different increments available. The length refers to the overall size of the round bar from end to end. Standard lengths are between 10 and 20 feet, but custom lengths can be obtained. When determining the quantity needed for a project, the length is an important factor to consider. Tolerance is a specification that allows for deviation from the specified diameter or length. It ensures that the round bar meets the required dimensions and can be effectively used. Tolerance values are usually expressed as plus or minus values, such as +/- 0.005 inches. The grade of steel used in round bars is also specified, indicating the material's quality and strength. Common grades include carbon steel, alloy steel, stainless steel, and tool steel. Each grade has unique properties suitable for different applications based on desired strength, corrosion resistance, and machinability. Surface finish and heat treatment may also be specified depending on the intended use of the round bars. These additional specifications ensure that the steel meets the necessary requirements for specific applications in various industries, such as construction and manufacturing.
- Q: Are steel round bars suitable for use in the manufacturing of fittings?
- Yes, steel round bars are suitable for use in the manufacturing of fittings. Steel round bars offer several advantages that make them a preferred choice for fittings manufacturing. Firstly, steel is known for its excellent strength and durability, making it ideal for creating reliable and long-lasting fittings. Steel round bars are capable of withstanding heavy loads and high pressure, ensuring that the fittings can perform effectively in various applications. Additionally, steel round bars are highly versatile and can be easily shaped and formed into different fittings designs. This flexibility allows manufacturers to create fittings that meet specific requirements and dimensions, ensuring a perfect fit for various systems and structures. Moreover, steel is resistant to corrosion, which is essential for fittings that may come into contact with moisture or other corrosive substances. The anti-corrosion properties of steel ensure that fittings maintain their integrity and functionality over time, even in harsh environments. Furthermore, steel round bars are readily available in a wide range of sizes, grades, and finishes, providing manufacturers with ample options to meet different specifications and design preferences. In conclusion, steel round bars are a suitable choice for use in the manufacturing of fittings due to their strength, durability, versatility, corrosion resistance, and availability. These attributes make steel round bars a reliable and efficient material for creating high-quality fittings that can withstand various operating conditions and provide long-lasting performance.
- Q: Are steel round bars suitable for high-temperature applications?
- Steel round bars can be suitable for high-temperature applications depending on the specific grade and composition of the steel. Certain grades of steel, such as stainless steel or heat-resistant alloys, are specifically designed to withstand high temperatures without losing their mechanical properties. These steel grades have high melting points, excellent heat resistance, and good oxidation resistance, making them ideal for applications in industries such as aerospace, automotive, and power generation. Stainless steel round bars, for example, exhibit excellent corrosion resistance and high strength at elevated temperatures. They can withstand temperatures up to 800-900 degrees Celsius without significant loss of mechanical properties. Additionally, heat-resistant alloys like Inconel or Hastelloy are used in extreme high-temperature environments, such as gas turbines or petrochemical plants, where temperatures can exceed 1000 degrees Celsius. However, not all steel round bars are suitable for high-temperature applications. Carbon steels, for instance, are prone to oxidation and loss of strength at elevated temperatures. Low-grade steel round bars may also experience deformation, softening, or even failure under high-temperature conditions. Therefore, it is crucial to select the appropriate steel grade and consult with experts or engineers to determine the suitability of steel round bars for specific high-temperature applications.
- Q: How are steel round bars classified based on their shape?
- Steel round bars are classified based on their shape as either hot-rolled or cold-drawn round bars.
- Q: Can steel round bars be used for making automotive chassis?
- Yes, steel round bars can be used for making automotive chassis. Steel is a commonly used material in automotive chassis due to its high strength and durability. Round bars made of steel provide excellent structural integrity and can withstand the heavy loads and forces experienced by a vehicle's chassis. The use of steel round bars in automotive chassis also helps improve the overall safety of the vehicle by providing a strong and rigid frame. Additionally, steel is relatively cost-effective and readily available, making it a popular choice for automotive manufacturers.
- Q: How do steel round bars perform in low-temperature environments?
- Steel round bars generally perform well in low-temperature environments due to their inherent strength and ductility. However, their performance can vary depending on the specific grade and composition of the steel used. Certain steel alloys, such as carbon steels, may become more brittle at low temperatures, leading to a decrease in impact resistance. To ensure optimal performance in low-temperature conditions, it is advisable to use specialized low-temperature steels or conduct thorough testing to determine the suitability of the steel round bars for the specific application.
- Q: What are the different types of steel round bar surface treatments for improved wear resistance?
- There are several different types of steel round bar surface treatments that can be applied to improve wear resistance. These treatments are designed to enhance the hardness, toughness, and overall durability of the steel, making it more resistant to wear and corrosion. Some of the most common surface treatments for steel round bars include: 1. Nitriding: This treatment involves exposing the steel to a nitrogen-rich environment at high temperatures. This forms a hard nitride layer on the surface, which improves wear resistance and provides enhanced hardness. 2. Carburizing: Carburizing is a process that involves introducing carbon into the surface of the steel to create a high-carbon layer. This layer increases hardness and wear resistance, making it suitable for applications that require high strength and durability. 3. Induction hardening: Induction hardening is a heat treatment process that selectively hardens the surface of the steel. This is achieved by heating the steel using an induction coil and then rapidly quenching it. The resulting hardened layer provides excellent wear resistance while maintaining the toughness of the core. 4. Shot peening: Shot peening involves bombarding the steel surface with small metal or ceramic particles at high velocity. This process creates compressive stresses on the surface, which improves fatigue life and wear resistance. 5. Thermal spraying: In thermal spraying, a coating material is melted and sprayed onto the steel surface using a flame or plasma torch. This creates a protective layer that offers enhanced wear resistance and corrosion protection. 6. PVD/CVD coatings: Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD) coatings involve depositing a thin layer of material onto the steel surface. These coatings provide excellent wear resistance, low friction, and improved corrosion protection. 7. Hard chrome plating: This process involves electroplating a layer of chromium onto the steel surface. Hard chrome plating offers high hardness, wear resistance, and corrosion protection. It's important to note that the choice of surface treatment depends on the specific application requirements and the type of wear resistance needed. Each treatment has its own advantages and limitations, and it is crucial to consider factors such as cost, environmental impact, and performance characteristics when selecting the most suitable treatment for a given steel round bar.
Send your message to us
Steel Round Bar Reliable Manufacturer from China
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 221 m.t.
- Supply Capability:
- 200334443 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
Similar products
Hot products
Hot Searches
