Carbon Structural Steel Square Bars Q235CR
- 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 Square Bars Q235CR
Product Specification
1, Chemical Composition %
| Grade | C | Si | Mn | S | P | Cr |
| Q235CR | ≤0.22 | ≤0.35 | ≤1.4 | ≤0.050 | ≤0.045 | ≥0.30 |
2, Mechanical Properties
| Strength of Extension σb | Yield Strength σs | Elogation δ5 |
| 375-500 Mpa | ≥235 Mpa | ≥25 % |
3, Diameter: 9mm, 9.8mm, 10mm, 12mm, 12.5mm, 13mm, 15mm, 15.87mm, 16mm, 19mm,
20mm, 22mm, 25mm, 25.4mm, 28mm, 38mm, 50mm, 51.5mm, 53mm, 65mm, 75mm, 100mm
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.
4, Q235CR with grade C or D can be used as steel with special use.
5, Can be used in making all kinds of mould hand and other unimportant mould parts.
6, Can be used as punch material.
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
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About Us
- 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 is the difference between a hot rolled and a turned steel round bar?
- The manufacturing process and resulting characteristics distinguish a hot rolled steel round bar from a turned steel round bar. To produce a hot rolled steel round bar, steel billets or ingots are heated to a high temperature and then rolled into the desired shape. This process facilitates easy forming and shaping, resulting in a bar with a rough surface and a slightly rounded or irregular shape. Hot rolling also enhances the overall strength and toughness of the steel, making it suitable for various applications. In contrast, a turned steel round bar is machined on a lathe from a hot rolled or cold drawn bar. This machining process involves removing material from the bar's surface using cutting tools, resulting in a smooth and precise finish. Turning allows for superior dimensional accuracy and control over the final shape and size of the bar. Regarding surface finish and dimensional accuracy, a turned steel round bar generally provides a higher level of precision compared to a hot rolled bar. The turned bar possesses a smoother surface with fewer imperfections, making it ideal for applications where appearance and aesthetics are important. Furthermore, the turned bar typically adheres to tighter tolerances, ensuring consistent dimensions throughout its length. The choice between a hot rolled and a turned steel round bar depends on the specific requirements of the application. Hot rolled bars are commonly employed in construction, manufacturing, and general engineering applications where strength and toughness play crucial roles. On the other hand, turned bars are frequently utilized in industries such as automotive, aerospace, and precision machining, where a high level of surface finish and dimensional accuracy is necessary. In conclusion, the distinction between a hot rolled and a turned steel round bar can be attributed to the manufacturing process and resulting characteristics. Hot rolled bars offer strength and toughness, while turned bars provide a smoother surface finish and greater dimensional accuracy. The choice ultimately hinges on the specific needs of the application.
- Q: What are the cost considerations for steel round bars?
- Cost considerations for steel round bars can vary depending on several factors. Firstly, the type and grade of steel used in the production of the round bars can greatly impact the cost. Different types of steel, such as carbon steel, alloy steel, or stainless steel, have varying costs due to differences in their composition and properties. Higher grade steel with superior strength and durability will generally be more expensive than lower grade options. Secondly, the size and dimensions of the round bars will also affect the cost. Larger diameter and length of the bars will require more raw material and additional processing, resulting in higher costs. Additionally, specialized shapes or custom sizes may require extra manufacturing steps or tooling, which can increase the overall price. The quantity or volume of round bars ordered can also influence the cost. Bulk orders typically benefit from economies of scale, allowing for reduced unit costs. Furthermore, longer-term contracts or partnerships with suppliers can result in better pricing agreements. Transportation and logistics expenses should also be taken into account. The cost of shipping steel round bars can vary depending on the distance, mode of transportation, and handling requirements. International shipping, for instance, may involve additional customs duties and taxes. Lastly, market conditions and fluctuations in the steel industry can impact the cost of round bars. Factors such as supply and demand, raw material costs, and currency exchange rates can all influence the final price. It is important to stay updated with market trends and work closely with suppliers to negotiate favorable pricing. Considering these various factors, it is crucial to conduct thorough research, compare quotes from multiple suppliers, and evaluate the quality-to-price ratio before making a decision. This will help ensure that the cost of steel round bars aligns with your budget and meets your specific requirements.
- Q: Are steel round bars suitable for the production of axles?
- Yes, steel round bars are suitable for the production of axles. Steel is a strong and durable material that provides excellent strength and stability, making it an ideal choice for axles. The round shape of the bars allows for easy machining and shaping, ensuring a precise and functional axle design. Additionally, steel round bars offer good resistance to wear, fatigue, and impact, which are essential properties for axles that need to withstand heavy loads and harsh conditions. Overall, steel round bars are a reliable and widely used material for the production of axles in various industries such as automotive, manufacturing, and construction.
- Q: Can steel round bars be used for making brake components?
- Yes, steel round bars can be used for making brake components. Steel is a commonly used material in brake systems due to its high strength, durability, and heat resistance properties. Steel round bars can be machined and shaped into various brake components such as brake discs, brake rotors, brake calipers, and brake pistons. The use of steel round bars ensures the brake components can withstand the high pressures and temperatures generated during braking, providing reliable and efficient stopping power.
- Q: Can steel round bars be used for making bridges?
- Yes, steel round bars can be used for making bridges. Steel is a commonly used material in bridge construction due to its high strength and durability. Round bars, also known as reinforcing bars or rebars, are often used to reinforce concrete structures, including bridge decks and piers. They provide additional tensile strength and help to distribute loads more evenly, making the bridge more resistant to bending or twisting forces. Additionally, round bars can be used as structural elements in the construction of cable-stayed or suspension bridges, where they are used to support and strengthen the main load-bearing cables. Overall, steel round bars are a versatile and reliable choice for bridge construction, offering the necessary strength and stability required to withstand the heavy loads and harsh environmental conditions experienced by bridges.
- Q: Are steel round bars resistant to impact?
- Yes, steel round bars are generally resistant to impact. Steel is known for its high strength and durability, making it highly resistant to impacts and forces. The round shape of the bars also helps distribute the impact evenly, reducing the risk of deformation or breakage. However, it is important to note that the specific resistance to impact may vary depending on the grade and quality of the steel, as well as the magnitude and nature of the impact force.
- Q: Are steel round bars available in different colors?
- Steel round bars typically come in a metallic grey color, which is the natural color of the steel material. However, it is possible to find steel round bars in different colors through various processes such as powder coating or painting. These processes involve applying a layer of paint or powder to the surface of the steel, which can be done in a wide range of colors. This allows for customization and aesthetic considerations, especially in applications where the appearance of the steel is important. It is important to note that the availability of different colors may vary depending on the supplier or manufacturer.
- Q: What are the different types of steel round bar alloys used in aerospace applications?
- The different types of steel round bar alloys used in aerospace applications include stainless steel, nickel-based alloys, and titanium alloys. These alloys are chosen for their high strength-to-weight ratios, corrosion resistance, and ability to withstand extreme temperatures and pressures encountered in aerospace environments.
- Q: How do steel round bars perform under vibration or resonance?
- Steel round bars have excellent performance under vibration or resonance due to their high strength and stiffness. They are able to withstand and absorb vibrations, minimizing the risk of failure or damage. Additionally, steel round bars possess good damping properties, which helps in dissipating energy and reducing the amplitude of vibrations, resulting in improved stability and reduced noise levels.
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Carbon Structural Steel Square Bars Q235CR
- 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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