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 are the advantages of using carbon-manganese alloy steel round bars?
- There are several advantages of using carbon-manganese alloy steel round bars: 1. Strength and durability: Carbon-manganese alloy steel round bars offer high levels of strength and durability, making them suitable for use in demanding applications. They can withstand heavy loads and resist deformation, ensuring long-lasting performance. 2. Impact resistance: Carbon-manganese alloy steel round bars have excellent impact resistance, making them highly suitable for applications where there is a risk of impact or sudden loads. This property helps prevent fractures or breakages, enhancing safety and reliability. 3. Weldability: Carbon-manganese alloy steel round bars have good weldability, allowing for easy fabrication and joining. They can be easily welded using common techniques, making them versatile and cost-effective for various construction projects. 4. Corrosion resistance: Carbon-manganese alloy steel round bars exhibit good corrosion resistance, making them suitable for use in environments where exposure to moisture or corrosive substances is a concern. This property helps to extend the lifespan of the bars and reduces the need for frequent maintenance and replacement. 5. Cost-effective: Carbon-manganese alloy steel round bars are generally more cost-effective compared to other high-strength steel options. They offer a balance between strength and affordability, making them a cost-efficient choice for applications where high-strength materials are needed without excessive costs. 6. Machinability: Carbon-manganese alloy steel round bars are relatively easy to machine, allowing for precise shaping and finishing. This property makes them suitable for applications that require complex or custom designs. Overall, the advantages of using carbon-manganese alloy steel round bars include their strength, durability, impact resistance, weldability, corrosion resistance, cost-effectiveness, and machinability. These properties make them a reliable and versatile choice for a wide range of applications in industries such as construction, automotive, and manufacturing.
- Q:What are the advantages of using chromium-molybdenum alloy steel round bars?
- One of the main advantages of using chromium-molybdenum alloy steel round bars is their superior strength and durability. This type of alloy steel has excellent tensile strength and high resistance to wear and corrosion, making it ideal for various applications that require a strong and long-lasting material. Additionally, chromium-molybdenum alloy steel round bars offer good heat resistance, making them suitable for use in high-temperature environments. Overall, these bars provide a reliable and cost-effective solution for industries such as construction, automotive, and manufacturing.
- Q:What is the typical hardness of a steel round bar?
- The typical hardness of a steel round bar can vary depending on the specific grade and heat treatment it has undergone. However, in general, steel round bars have a hardness ranging from 100 to 300 on the Brinell hardness scale. This scale measures the resistance of a material to indentation and is commonly used to assess the hardness of metals. It is important to note that different applications may require different levels of hardness, and steel round bars can be customized to meet specific requirements through various heat treatment processes such as quenching and tempering.
- Q:Are steel round bars suitable for structural applications?
- Indeed, steel round bars are well-suited for structural applications. Renowned for their robustness and resilience, steel round bars prove to be excellent for diverse structural purposes. They exhibit exceptional load-bearing capabilities, thus frequently employed in construction undertakings like bridges, buildings, and infrastructure projects. Moreover, steel round bars possess commendable resistance against corrosion, fire, and severe weather conditions, thereby ensuring the longevity and structural integrity of the application. Their adaptability allows for effortless shaping, welding, and customization to satisfy the project's specific requisites. All in all, steel round bars present themselves as a dependable and cost-efficient option for structural applications.
- Q:How do you calculate the shear strength of a steel round bar?
- In order to calculate the shear strength of a steel round bar, two pieces of information are required: the diameter of the bar and the shear modulus of the material. The shear strength is determined by dividing the maximum load that the bar can endure before shearing by its cross-sectional area. The shear strength can be calculated using the following formula: Shear Strength = Maximum Load / Cross-sectional Area To find the cross-sectional area, it is necessary to calculate the area of a circle using the diameter of the round bar. The formula for the area of a circle is as follows: Area = π * (Diameter/2)^2 Once the maximum load and cross-sectional area are known, these values can be substituted into the shear strength formula to determine the shear strength of the steel round bar. It is important to emphasize that the shear modulus is a crucial factor in the calculation process. The shear modulus indicates the material's resistance to deformation and measures the amount of shear stress that the material can withstand before it begins to deform. The shear modulus value can be obtained from reference materials or technical specifications provided by the manufacturer.
- Q:How do you calculate the weight of a steel round bar based on its length and diameter?
- To calculate the weight of a steel round bar, you can use the formula: weight = (pi * diameter^2 * length) / 4.
- Q:Are steel round bars suitable for high-pressure applications?
- Steel round bars are frequently a good choice for high-pressure applications. Steel is renowned for its strength and durability, making it an ideal material for handling high pressure. Round bars, in particular, possess exceptional tensile strength and resistance to deformation, rendering them suitable for utilization in high-pressure settings like hydraulic systems, oil and gas pipelines, and structural applications. Furthermore, steel round bars can be customized to meet specific strength and hardness criteria, further enhancing their aptness for high-pressure applications. Nevertheless, it is crucial to carefully consider the requirements of the particular application and seek advice from an engineer or industry expert to guarantee the selection of the most appropriate grade and size of steel round bar for optimal performance and safety.
- Q:What is the difference between a centerless ground and a cold finished steel round bar?
- A centerless ground steel round bar and a cold finished steel round bar are both types of steel bars that have undergone different manufacturing processes, resulting in distinct characteristics and properties. A centerless ground steel round bar is produced by feeding a hot rolled or cold drawn steel bar through a grinding machine. This process removes any surface imperfections or irregularities, resulting in a smooth and uniform surface finish. The centerless grinding process also ensures tight dimensional tolerances, making the bar suitable for applications that require precise measurements. Additionally, centerless ground bars have improved straightness and roundness, which enhances their overall quality and suitability for various machining operations. On the other hand, a cold finished steel round bar is produced by cold drawing or cold rolling a hot rolled steel bar. This process involves reducing the diameter of the bar while maintaining its length, resulting in a more precise and consistent size. Cold finishing also improves the surface finish of the bar, making it smoother and more uniform. Cold finished bars have tighter dimensional tolerances and improved mechanical properties, including higher strength and hardness compared to hot rolled bars. In summary, the main difference between a centerless ground and a cold finished steel round bar lies in the manufacturing processes used and their resulting characteristics. Centerless ground bars have a smooth surface finish, tight dimensional tolerances, improved straightness, and roundness, making them suitable for precise machining applications. Cold finished bars, on the other hand, have a more precise size, improved surface finish, tighter dimensional tolerances, and enhanced mechanical properties, making them suitable for various applications requiring higher strength and hardness.
- Q:What are the different welding techniques for steel round bars?
- Steel round bars can be welded using various techniques. Here are some commonly used ones: 1. Stick welding, also known as Shielded Metal Arc Welding (SMAW): This technique involves using an electrode coated in flux to create an electric arc between the electrode and the workpiece. The base metal melts, resulting in a weld. 2. Gas Metal Arc Welding (GMAW), commonly referred to as MIG (Metal Inert Gas) welding: In this technique, a wire electrode is fed through a welding gun. It combines with a shielding gas to create a weld. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuously fed electrode. However, instead of a solid wire electrode, it uses a tubular electrode filled with flux. This flux protects the weld and adds strength. 4. Tungsten Inert Gas (TIG) welding, also known as Gas Tungsten Arc Welding (GTAW): This precise technique involves using a non-consumable tungsten electrode to create an arc. Additional material may be added using a filler rod. 5. Submerged Arc Welding (SAW): This technique is suitable for heavy-duty applications, such as welding steel round bars for structural purposes. The arc and welding zone are submerged in granular flux, providing protection and deep penetration. Each technique has its advantages and is suitable for specific applications. Factors like round bar thickness, required weld strength, and accessibility of the welding site should be considered when selecting the appropriate technique for a strong and durable weld on steel round bars.
- Q:What are the advantages of using vanadium-alloy steel round bars?
- Vanadium-alloy steel round bars offer numerous benefits. Firstly, they possess significantly enhanced strength and toughness compared to regular steel, making them ideal for applications requiring durability and high strength, such as construction, manufacturing, and engineering projects. The inclusion of vanadium improves the steel's ability to withstand heavy loads, impacts, and extreme temperatures, enabling it to thrive in demanding environments. Secondly, vanadium-alloy steel round bars display exceptional resistance to corrosion. The vanadium creates a protective oxide layer on the steel's surface, preventing rusting and corrosion. Consequently, these bars have impressive longevity, even in harsh or corrosive surroundings. Moreover, vanadium-alloy steel exhibits excellent weldability and machinability. It can be effortlessly welded, facilitating efficient fabrication and construction processes. Additionally, its machinability allows for precise shaping and forming, making it adaptable to various design requirements. Furthermore, vanadium-alloy steel excels in wear resistance. This quality is particularly advantageous in applications where the bars face high levels of friction, abrasion, or wear, such as mining or manufacturing equipment. The addition of vanadium enhances the steel's hardness and wear resistance, thereby extending the lifespan of the bars and reducing maintenance costs. Lastly, vanadium-alloy steel demonstrates exceptional heat resistance. It can endure high temperatures without compromising its strength or structural integrity. Consequently, it is suitable for applications involving exposure to extreme heat, such as automotive engines, turbines, or power generation equipment. In conclusion, the utilization of vanadium-alloy steel round bars provides a range of advantages, including increased strength and toughness, corrosion resistance, ease of welding and machining, impressive wear resistance, and high heat resistance. These qualities establish vanadium-alloy steel round bars as a dependable and versatile choice for various applications.
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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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