Carbon Structural Steel Square Bars SAE1020CR
- 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 SAE1020CR
Product Specification
1, Chemical Composition %
| Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
| SAE1020CR | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
2, Mechanical Properties
| Strength of Extension σb | Yield Strength σs | Elogation δ5 | Reduction of Area ψ | Hardness (no heat treatment) |
| ≥410(42) Mpa | ≥245(25) Mpa | ≥25 % | ≥55 % | ≤156HB |
Application
1, can be used to produce various types of rivet, bolts and welding structural parts.
2, can be used to produce seamless pipes, mold, steel plate, U-steel and joist steel
Product Main Points
1, high quality with competitive price
2, certifictes are available
3, heat treatment specification: tempering, 910 ℃, air cooling
4, heat treat ment: normalizing, annealing, tempering, quenching
5, surface treatment: black, polished, galvanized
6, 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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About Us
- Q: What is the difference between a cold-drawn and a centerless ground steel round bar?
- A cold-drawn steel round bar and a centerless ground steel round bar are both types of steel bars that have undergone different manufacturing processes, resulting in different characteristics and properties. Cold-drawn steel round bars are produced by pulling a hot-rolled or annealed steel bar through a die to reduce its diameter and increase its length. This process improves the mechanical properties of the steel, making it stronger, more precise in dimensions, and with a smoother surface finish. Cold-drawn bars have a higher tensile strength, better surface finish, and tighter dimensional tolerances compared to hot-rolled bars. They are commonly used in applications where precision and strength are required, such as in automotive components, machinery parts, and construction materials. On the other hand, centerless ground steel round bars are produced by passing a cylindrical steel bar through a grinding machine without the need for centers or support. The grinding process removes surface imperfections and deviations in diameter, resulting in a precise and smooth finish. Centerless ground bars offer excellent dimensional accuracy, surface finish, and roundness. They are often used in applications where precision and tight tolerances are critical, such as in the manufacturing of bearings, shafts, and hydraulic cylinders. In summary, the main difference between a cold-drawn steel round bar and a centerless ground steel round bar lies in the manufacturing process and the resulting properties. Cold-drawn bars are formed by pulling the steel through a die, resulting in improved mechanical properties, tighter tolerances, and a smoother surface finish. Centerless ground bars are produced by grinding the steel to enhance dimensional accuracy, roundness, and surface finish. Both types of bars have their own advantages and are suited for different applications based on the required precision, strength, and surface finish.
- Q: How do I choose the right grade of steel round bar for my application?
- To select the appropriate grade of steel round bar for your needs, it is crucial to carefully consider various factors. Here are some guidelines to assist you in making an educated decision: 1. Begin by understanding the specific requirements of your application. Take into account factors like load-bearing capacity, resistance to corrosion, temperature endurance, and any applicable industry regulations or standards. 2. Determine the mechanical properties necessary for your application. Depending on the specific use, you may require certain properties such as strength, hardness, toughness, or ductility. Prioritize these properties based on their significance to your application. 3. Assess the environmental conditions in which the steel round bar will be used. This includes factors like exposure to moisture, chemicals, high temperatures, or abrasive surroundings. Certain grades of steel offer better resistance to corrosion or heat, rendering them more suitable for specific conditions. 4. Seek guidance from experts if you are uncertain about the most suitable grade of steel for your application. Consult metallurgists, engineers, or suppliers who can provide valuable insights based on their expertise and experience. 5. Compare and contrast different grades of steel round bars available in the market once you have a clear understanding of your application requirements. Consider factors such as composition, manufacturing process, and specific properties associated with each grade. Look for grades that closely align with your requirements. 6. Review the industry standards and specifications to determine if any specific grades are mandated for your application. These standards can offer guidance and ensure compliance with safety and quality requirements. 7. Evaluate the cost-effectiveness of various grades by considering factors like initial purchase cost, maintenance and replacement expenses, and the overall lifespan of the steel round bar. 8. If possible, conduct tests or trials using different grades of steel round bars to assess their performance in your specific application. This will provide valuable data to aid your decision-making process. By following these steps and taking all relevant factors into account, you can efficiently and effectively select the appropriate grade of steel round bar that meets the demands of your application.
- Q: What are the different types of steel round bars used in the automotive steering systems?
- In automotive steering systems, there exists a range of steel round bars with distinctive properties and advantages. 1. Carbon Steel Round Bars: These round bars are extensively utilized in automotive steering systems due to their superior strength and durability. They are suitable for various steering components like tie rods and drag links. Additionally, carbon steel round bars are cost-effective and readily accessible, making them a popular choice in the automotive industry. 2. Alloy Steel Round Bars: By incorporating alloying elements such as chromium, nickel, and molybdenum into carbon steel, alloy steel round bars enhance their strength, hardness, and wear resistance. They are particularly useful in high-stress areas of the steering system, including steering shafts and steering knuckles, where additional strength is required. 3. Stainless Steel Round Bars: Stainless steel round bars are renowned for their exceptional resistance to corrosion, making them ideal for steering components exposed to harsh environments or moisture. Steering column shafts and tie rod ends frequently incorporate stainless steel round bars. 4. Tool Steel Round Bars: Steering system components that demand high hardness, wear resistance, and toughness often utilize tool steel round bars. These bars are commonly employed in the production of steering gears and other precision steering components. 5. High-Strength Low-Alloy (HSLA) Steel Round Bars: HSLA steel round bars, a type of alloy steel, offer a favorable balance between strength, toughness, and formability. Lightweight steering system components often employ HSLA steel round bars to reduce weight while maintaining structural integrity. Ultimately, the selection of steel round bars in automotive steering systems depends on factors such as the specific application, desired strength, durability, and corrosion resistance. Manufacturers carefully choose the appropriate steel type to ensure optimal performance and safety in steering systems.
- Q: What is the elasticity of a steel round bar?
- The ability of a steel round bar to return to its original form and size after external forces or deformations is referred to as its elasticity. Steel is renowned for its high elastic modulus, indicating its resistance to deformation and ability to withstand significant stress before permanently bending or breaking. The composition of a steel round bar, specifically its carbon content and the inclusion of other alloying elements, determines its elasticity. Generally, steel with higher carbon content possesses greater elasticity and can be more easily manipulated without enduring permanent deformation. Nonetheless, it is noteworthy that factors like temperature, strain rate, and any defects or imperfections in the material can also influence the elasticity of a steel round bar.
- Q: 12mm Round steel, the material is Q235, the maximum weight can bear?
- Round steel: round steel refers to the cross section of round solid steel. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing.
- Q: What is the difference between a turned and a polished steel round bar?
- A turned steel round bar and a polished steel round bar both undergo separate processes that result in different surface finishes and properties. A turned steel round bar is typically created by using a lathe machine to remove material from the surface of a steel bar. This process involves rotating the bar against a cutting tool, which cuts away the outer layer and leaves behind a smooth and cylindrical surface. The turned bar may have visible machining marks due to the cutting process, although it is generally considered to have a more precise and uniform diameter compared to other types of steel bars. Turned bars are often used in applications where dimensional accuracy is crucial, such as in machinery or tooling. On the other hand, a polished steel round bar undergoes a different process that involves grinding or buffing the surface to achieve a smooth and reflective finish. Polishing removes any imperfections or roughness from the surface of the steel bar, resulting in a highly lustrous appearance. Polished bars are often used in decorative applications or where visual aesthetics are important, such as in architectural designs or high-end consumer products. In summary, the main difference between a turned and a polished steel round bar lies in their respective manufacturing processes and resulting surface finishes. A turned bar is machined to achieve precise dimensions, while a polished bar is subjected to a polishing process to obtain a smooth and reflective surface. The choice between the two depends on the specific requirements of the application, with turned bars being preferred for dimensional accuracy and polished bars for aesthetic appeal.
- Q: Can steel round bars be used for making bicycle frames or handlebars?
- Yes, steel round bars can be used for making bicycle frames or handlebars. Steel is a commonly used material in bicycle manufacturing due to its strength, durability, and affordability. Round bars made of steel provide excellent rigidity and stability, which are essential for ensuring the structural integrity of a bicycle frame or handlebars. Additionally, steel has a high tensile strength, allowing it to withstand the stresses and strains experienced during cycling. It is worth noting that different types of steel, such as chromoly steel, may be preferred for bicycle frames and handlebars as they offer specific advantages such as improved strength-to-weight ratio. However, in general, steel round bars are a suitable choice for constructing bicycle frames and handlebars.
- Q: Are steel round bars suitable for high-temperature applications?
- Depending on the specific grade and composition, steel round bars can be used for high-temperature applications. Steel grades like stainless steel and heat-resistant alloys are designed specifically to withstand high temperatures without compromising their mechanical properties. These grades have high melting points, excellent heat resistance, and good oxidation resistance, making them ideal for industries such as aerospace, automotive, and power generation. For instance, stainless steel round bars offer exceptional corrosion resistance and high strength even at elevated temperatures. They can endure temperatures ranging from 800-900 degrees Celsius without significant loss of mechanical properties. Moreover, heat-resistant alloys like Inconel or Hastelloy are employed in extreme high-temperature settings like gas turbines or petrochemical plants, where temperatures can surpass 1000 degrees Celsius. Nevertheless, not all steel round bars are suitable for high-temperature applications. Carbon steels, for instance, are susceptible to oxidation and loss of strength when exposed to elevated temperatures. Low-grade steel round bars may also experience deformation, softening, or even failure under high-temperature conditions. Consequently, it is essential to carefully choose the appropriate steel grade and seek guidance from experts or engineers to determine the suitability of steel round bars for specific high-temperature applications.
- Q: What are the different types of steel round bars used in the manufacturing of bearings?
- The manufacturing of bearings involves the use of various types of steel round bars. The choice of steel depends on factors like the application, load capacity, and desired performance of the bearing. One popular option is through-hardened steel, which undergoes heat treatment to achieve consistent hardness throughout the bar. These round bars offer excellent strength and wear resistance, making them suitable for heavy-duty bearing applications. Another commonly used steel is case-hardened steel. In this case, the surface is hardened while the core remains relatively soft. This combination provides high surface hardness for wear resistance, as well as improved toughness and impact resistance. Stainless steel is another steel type utilized in bearing production, especially in environments where corrosion resistance is required. Stainless steel round bars have exceptional resistance to rust and corrosion, making them ideal for marine or chemical industries. Additionally, alloy steel round bars are commonly employed in bearing manufacturing. These steels are created by adding alloying elements like chromium, molybdenum, or nickel to enhance specific properties such as hardness, toughness, or heat resistance. Alloy steel round bars are often used in specialized bearing applications that require exceptional performance under high temperatures or extreme conditions. To summarize, the manufacturing of bearings involves different types of steel round bars, including through-hardened steel, case-hardened steel, stainless steel, and alloy steel. Each type offers unique properties and characteristics that make them suitable for specific bearing applications.
- Q: Can steel round bars be plated?
- Yes, steel round bars can be plated. Plating is a common process used to enhance the appearance and protect the surface of steel bars. The plating can be done using various materials such as chrome, nickel, or zinc, depending on the desired outcome and application of the steel bars. Plating can provide additional corrosion resistance, improve hardness or wear resistance, and also create an attractive finish. It is important to note that proper preparation and cleaning of the steel surface before plating is crucial to ensure a durable and high-quality plated finish.
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Carbon Structural Steel Square Bars SAE1020CR
- 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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