Carbon Structural Steel Round 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 Round 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 - 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.
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
FAQ
1, Payment Terms:
30% T/T deposit & 70% T/T before delivery.
Irrevocable L/C at sight
2, Trade Terms:
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.
PRODUCT SHOW
ABOUT US
- Q: What are the different joining methods for steel round bars?
- Different grammar and expressions: 1. Steel round bars can be joined in various ways, depending on the specific application and desired outcome. Welding, brazing, and mechanical joining are among the most common methods used for joining steel round bars. 2. Welding is a widely used technique for joining steel round bars. It involves melting the edges of the bars and fusing them together using heat. The choice of welding technique, such as arc welding, MIG welding, TIG welding, or spot welding, depends on the thickness and type of steel being joined. Welding creates a strong and permanent bond, making it suitable for heavy-duty applications. 3. Brazing is another method employed to join steel round bars. In this process, the bars are heated and a filler metal with a lower melting point than the steel is melted. The molten filler metal is then drawn into the joint by capillary action, resulting in a strong bond when it solidifies. Brazing is often preferred when the base metals have different melting points or when a lower-temperature joining process is required. 4. Mechanical joining techniques, on the other hand, do not involve any heat or melting of the steel round bars. Instead, they rely on mechanical means to hold the bars together. Examples of mechanical joining methods include bolted connections, riveting, and clamping. These techniques are typically used when disassembly or adjustability is necessary, as they provide a non-permanent joint that can be easily undone. When selecting a joining method for steel round bars, it is crucial to consider factors such as strength requirements, environmental conditions, and the specific application. Each method has its own advantages and limitations, and the most appropriate joining method should be chosen to ensure a secure and durable bond between the round bars.
- Q: What is the density of a steel round bar?
- The density of a steel round bar can vary depending on the specific type and composition of the steel, but on average, the density of steel is about 7.85 grams per cubic centimeter (g/cm³) or 7850 kilograms per cubic meter (kg/m³). This means that for a given volume of steel round bar, the weight or mass of the bar can be calculated by multiplying its volume by its density.
- 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: Could you tell me what is the difference between steel pipe and round steel?
- Widely used in the manufacture of structural and mechanical parts, such as oil drilling pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction. Making ring parts with steel tubes can improve data application rate, simplify manufacturing process, save data and work hours, such as rolling bearings, rings, Jack sleeves, etc., and have been widely used in steel pipe manufacture.
- Q: Can steel round bars be heat treated to improve their mechanical properties?
- Steel round bars can undergo heat treatment to enhance their mechanical properties. Heat treatment involves heating the steel to a specific temperature, maintaining it at that temperature for a certain duration, and then cooling it rapidly or slowly. This process can modify the microstructure of the steel, resulting in changes to its hardness, strength, toughness, and other mechanical properties. Various types of heat treatment processes can be applied to steel round bars, depending on the desired outcome. For instance, annealing is a process that entails heating the steel to a specific temperature and subsequently cooling it gradually. This method helps alleviate internal stresses in the steel, enhance its ductility, and facilitate machining. Another commonly used heat treatment process is quenching and tempering. This involves heating the steel to a specific temperature and rapidly cooling it, often by immersing it in an oil or water quenching medium. This swift cooling process helps strengthen the steel, making it more resistant to wear and abrasion. Following quenching, the steel is typically tempered by reheating it to a lower temperature, reducing its brittleness and improving its toughness. In addition to annealing and quenching and tempering, other heat treatment processes such as normalizing, case hardening, and precipitation hardening can also be employed to enhance the mechanical properties of steel round bars. These processes involve different heating and cooling techniques, and are utilized to achieve specific outcomes based on the desired properties of the steel. Overall, heat treatment is a versatile and effective approach for improving the mechanical properties of steel round bars. By carefully controlling the heating and cooling process, significant improvements in hardness, strength, toughness, and other properties can be achieved, rendering the steel suitable for a wide range of applications.
- Q: What are the different grades of steel used in round bars?
- The different grades of steel used in round bars vary depending on the desired properties and applications. Some common grades include mild steel (low carbon steel), stainless steel, alloy steel, and tool steel. Each grade offers specific characteristics such as strength, corrosion resistance, hardness, or machinability, allowing for a wide range of applications in industries like construction, manufacturing, automotive, and aerospace.
- Q: How do you calculate the weight of a steel round bar based on its density and dimensions?
- To calculate the weight of a steel round bar, you need to know its density and dimensions. The formula to calculate weight is W = V x D, where W represents weight, V represents volume, and D represents density. First, you need to find the volume of the round bar. The formula to calculate the volume of a cylinder is V = πr^2h, where V represents volume, π is a constant (approximately 3.14159), r represents the radius of the round bar, and h represents the height or length of the round bar. If you have the diameter of the round bar instead of the radius, you can divide the diameter by 2 to find the radius. Once you have the radius, you can substitute it into the formula along with the height of the round bar to calculate the volume. Next, you need to know the density of the steel. The density of steel is typically measured in grams per cubic centimeter (g/cm^3) or kilograms per cubic meter (kg/m^3). Make sure the units of both the density and volume are consistent. If the density is given in g/cm^3, convert the volume from cm^3 to m^3 by dividing it by 1,000,000. Finally, multiply the volume by the density to calculate the weight. If the density is in kg/m^3, the weight will be in kilograms. If the density is in g/cm^3, the weight will be in grams. You can convert the weight to other units by using appropriate conversion factors. Remember to double-check your calculations and ensure that all units are consistent throughout the calculation.
- Q: What is the difference between carbon steel and alloy steel round bars?
- Both carbon steel and alloy steel round bars find extensive use across various industries, although they vary in terms of their composition and properties. In particular, carbon steel round bars consist predominantly of iron and carbon, with small amounts of other elements present. Depending on the grade, the carbon content typically ranges between 0.05% and 2.0%. These bars are renowned for their robustness and hardness, rendering them suitable for applications demanding high durability and resistance to wear. Additionally, carbon steel round bars possess excellent machinability, allowing them to be easily shaped and molded into desired forms. Nevertheless, they may exhibit limited resistance to corrosion, necessitating the application of additional protective coatings in corrosive environments. In contrast, alloy steel round bars are produced by incorporating various alloying elements into carbon steel. Such elements encompass manganese, chromium, nickel, molybdenum, and others. The inclusion of these elements augments the properties of the steel, including enhanced strength, toughness, and resistance to wear and corrosion. Alloy steel round bars are frequently selected for applications demanding specific characteristics, such as resistance to high temperatures, a high strength-to-weight ratio, or improved machinability. In conclusion, the primary disparity between carbon steel and alloy steel round bars lies in their composition and resulting properties. Carbon steel round bars primarily consist of iron and carbon, offering commendable strength and hardness; however, they may exhibit limited resistance to corrosion. Conversely, alloy steel round bars incorporate supplementary alloying elements, bolstering specific properties like increased strength, toughness, and corrosion resistance. The selection between carbon steel and alloy steel round bars hinges upon the precise requirements of the application at hand.
- Q: What is the impact strength of a steel round bar?
- The impact strength of a steel round bar refers to its ability to withstand sudden forces or shocks without breaking or fracturing. It is a measure of the material's toughness and resistance to impact loads. The impact strength of a steel round bar is influenced by various factors such as the composition of the steel, its heat treatment, and any additional alloying elements. The impact strength is typically determined through testing, such as the Charpy or Izod impact test, which involves striking a notched sample of the steel bar with a pendulum and measuring the amount of energy absorbed by the material before it fractures. The results are usually reported in terms of the energy absorbed in joules (J) or foot-pounds (ft-lb). The impact strength of a steel round bar can vary greatly depending on its grade or specification. Different grades of steel have different levels of toughness, with some being more suitable for applications requiring high impact resistance, such as construction, automotive, or heavy machinery, while others may be better suited for less demanding applications. It is important to note that the impact strength is just one of the many mechanical properties that need to be considered when selecting a steel round bar for a specific application. Other factors, such as tensile strength, yield strength, hardness, and corrosion resistance, should also be taken into account to ensure the optimal performance and durability of the steel round bar in its intended use.
- Q: Can steel round bars be used in the renewable energy industry?
- Yes, steel round bars can be used in the renewable energy industry. They are commonly used in the construction of wind turbine towers, solar panel structures, and hydroelectric power systems. Steel round bars offer high strength, durability, and resistance to corrosion, making them suitable for supporting and securing various renewable energy infrastructure components.
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Carbon Structural Steel Round 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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