Round Steel 5115 Steel Bars

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Material standardized according to	5115 round steel round bar
Unfinished products manufactured	Pipes - profiles - squares
Properties	Excellent mechanical features - good workability on high-speed automatic machines with easy fragmentation of the shavings made by the tool
Typical applications	used for making heavy loading and sectional gear shaft,gear,connecting rod,eccentric shaft,rear axle shaft of car,parts of steam turbine,etc

C	Cr	Si	p	Mn	Ni
0.37~0.45	0.90~1.20	0.17~0.37	≤0.035	0.90~1.20	≤0.030

Quenching Temp	860 ±15 °C
Cool Media	Oil
Tempering Temp	600 ±15 °C
Cooling Media	air

Tensile Strength (MPA)	Yield Strength(MPA)	Elongation(%)	Reduction In Area(%)	Impact Energy(J)	Hardness(HB)
≥1080	≥ 930	≥ 12	≥ 45	≥ 63	≥217

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: What kind of nuts do you need for round 20 rounds?: The M22 thread can be made, if made M20, need a car off some. You may be talking about support, depending on how big your lead screw is.Stainless steel round bar refers to the solid steel strip with round section. The specifications are expressed in millimeters of diameter, such as "50", which means a stainless steel round bar of 50 millimeters in diameter.

Q: What is the difference between seamless and welded steel round bars?: The manufacturing process and resulting characteristics distinguish seamless and welded steel round bars. Seamless bars undergo a process where a solid billet of steel is pierced to form a hollow tube. This tube is then elongated and further processed to achieve the desired dimensions and surface finish. The seamless manufacturing process guarantees a bar without any welds or joints along its length. Consequently, seamless steel round bars possess a uniform composition and structure throughout, ensuring exceptional strength and reliability. They are particularly favored for applications involving high pressure or high temperatures, as they display superior resistance to internal and external pressure. In contrast, welded steel round bars are produced by combining two or more steel pieces through welding techniques. This involves heating the ends of the steel pieces and fusing them together using various welding methods, such as arc welding, resistance welding, or fusion welding. The welding process introduces a weld seam along the length of the bar, which has the potential to impact its structural integrity and mechanical properties. Welded steel round bars may exhibit slightly lower strength and toughness compared to seamless bars due to the presence of the weld seam, which can create stress concentrations. Nonetheless, they are generally more cost-effective and readily available in a wide range of sizes and grades. To summarize, the primary distinction between seamless and welded steel round bars lies in their manufacturing process and resulting characteristics. Seamless bars are created through the piercing of a solid billet, ensuring a uniform composition and strength throughout, which makes them suitable for high-pressure and high-temperature applications. On the other hand, welded bars are formed by joining multiple steel pieces through welding, introducing a weld seam that may slightly affect their strength and toughness. Welded bars are often more cost-effective and available in various sizes and grades.

Q: What are the different packaging options for steel round bars?: Customers have various packaging options to choose from when it comes to steel round bars, depending on their specific needs and requirements. Some commonly used packaging options include: 1. Bundles: Steel round bars can be bundled together using steel straps or wire to create a compact and secure package. The bundles come in different sizes, ranging from 2 to 5 tons, and are suitable for transportation and storage purposes. 2. Wooden Crates: For enhanced protection during transportation, steel round bars can be packed in wooden crates. These crates are designed to withstand the weight and size of the bars, ensuring safe delivery to the customer. 3. Steel Cages: In certain situations, steel round bars are packaged in steel cages or racks to provide additional stability and security during transportation. These cages are typically made of sturdy steel and can be stacked, making them suitable for storage as well. 4. Plastic Wrapping: To safeguard the steel round bars from moisture, dust, and other contaminants, they can be wrapped in plastic or shrink wrap. This packaging option is commonly used when the bars are stored or transported in open-air environments. 5. Customized Packaging: Depending on the customer's specific requirements, steel round bars can be packaged in custom-designed containers or crates. These can be tailored to accommodate different sizes, weights, and quantities of bars, ensuring maximum convenience and safety during handling and transportation. It is important to note that the choice of packaging option may vary based on factors such as the destination, mode of transportation, and specific industry standards. Therefore, customers are advised to consult their suppliers or packaging experts to determine the most suitable packaging option for their steel round bars.

Q: Can steel round bars be used in the production of shafts?: Yes, steel round bars can be used in the production of shafts. Steel round bars are often used as a raw material in the manufacturing process of shafts due to their strength, durability, and versatility. They can be machined or forged into the desired shape and size required for the shaft, and their inherent properties make them suitable for various applications such as automotive, machinery, and construction industries. Steel round bars offer excellent mechanical properties, including high tensile strength, good impact resistance, and resistance to corrosion, making them an ideal choice for shafts that require high load-bearing capacity and reliability. Additionally, steel round bars can be heat-treated to further enhance their strength and hardness, ensuring optimal performance and longevity of the shafts in various operating conditions.

Q: What is the maximum load capacity of a steel round bar?: Various factors, including the diameter, length, and grade of the steel, influence the maximum load capacity of a steel round bar. Steel round bars are engineered to endure different levels of stress, resulting in varying load capacities. Generally, the yield strength and ultimate tensile strength of the steel determine the load capacity. To ascertain the maximum load capacity of a particular steel round bar, it is imperative to refer to engineering specifications or manufacturer-provided reference materials. These specifications will furnish the necessary data to compute the load capacity based on the precise dimensions and characteristics of the round bar. It is crucial to emphasize that load capacity calculations should be entrusted to qualified professionals who possess a comprehensive comprehension of structural engineering principles and material properties.

Q: What are the weight calculations for steel round bars?: One can determine the weight of steel round bars through a simple formula. To calculate the weight of a steel round bar, multiply the square of its diameter in millimeters by the length in meters, and then multiply the result by the specific weight of steel, which is typically around 7.85 grams per cubic centimeter. The weight of a steel round bar can be calculated using the following formula: Weight = (Diameter^2 x Length x Specific Weight of Steel) / 1000 In this formula: - Diameter represents the diameter of the round bar in millimeters. - Length indicates the length of the round bar in meters. - Specific Weight of Steel refers to the density of steel, usually 7.85 grams per cubic centimeter. - 1000 is employed to convert the weight from grams to kilograms. It is essential to consider that this formula assumes the round bar is made solely of steel and does not take into account any variations in the specific weight among different steel alloys. Moreover, it is crucial to maintain consistent units throughout the calculation, whether millimeters or meters, for accurate results.

Q: How do you determine the appropriate steel grade for a specific application?: Determining the appropriate steel grade for a specific application requires a comprehensive understanding of the application's requirements and the properties of different steel grades. Here are some key steps to consider: 1. Identify the application requirements: Start by clearly defining the specific application's requirements such as load-bearing capacity, corrosion resistance, temperature resistance, and durability. Consider factors such as the environment the steel will be exposed to, the expected stress levels, and any specialized characteristics needed. 2. Research steel grades: Once the application requirements are understood, research various steel grades available in the market. Identify steel grades that are known for possessing the desired properties required for the specific application. Consult industry standards, expert opinions, and available resources to gain insights into different steel grades and their performance in similar applications. 3. Evaluate material properties: Analyze the physical, mechanical, and chemical properties of the steel grades under consideration. Key properties to assess include strength, ductility, toughness, hardness, corrosion resistance, weldability, and formability. Compare these properties with the application requirements to determine which steel grades align best with the specific needs. 4. Consider cost and availability: Evaluate the cost and availability of the steel grades that meet the application requirements. Factors such as the initial cost, maintenance costs, and availability of the steel grade in the required form and quantity should be taken into account. This step ensures that the chosen steel grade is not only suitable but also feasible from an economic perspective. 5. Seek expert advice: Consulting with experts, such as metallurgists or engineers, can provide valuable insights into selecting the appropriate steel grade. Their expertise and experience can help weigh the pros and cons of different steel grades, identify potential challenges, and suggest alternatives or modifications if necessary. 6. Conduct testing and trials: If feasible, conduct testing or trials using samples of the selected steel grade to assess its performance under real-world conditions. This step can help validate the suitability of the chosen steel grade and identify any unforeseen issues or areas for improvement. By carefully considering the application requirements, researching steel grades, evaluating material properties, considering cost and availability, seeking expert advice, and conducting testing and trials, one can effectively determine the appropriate steel grade for a specific application.

Q: Can steel round bars be used in the production of musical equipment?: Musical equipment production can indeed incorporate steel round bars. Steel, being a robust and long-lasting substance, is frequently employed in constructing diverse musical instruments. Structural features like frames, braces, and supports for guitars, drums, and pianos can all be fashioned from steel round bars. Furthermore, steel can be utilized to manufacture sound-enhancing components such as resonators or bellows in certain instruments. The adaptability and dependability of steel render it an appropriate selection for the production of musical equipment.

Q: What are the different types of surface treatments for steel round bars?: There are several types of surface treatments commonly used for steel round bars. These include hot-dip galvanizing, electroplating, painting, powder coating, and black oxide coating. Each treatment offers specific benefits and is chosen based on the desired level of corrosion resistance, aesthetics, and durability required for the application.

Q: Can steel round bars be used in the automotive manufacturing industry?: Yes, steel round bars can be used in the automotive manufacturing industry. Steel is a commonly used material in the automotive industry due to its strength, durability, and versatility. Steel round bars can be used for various applications in automotive manufacturing, such as in the construction of chassis, suspension components, drive shafts, and axles. These round bars provide excellent resistance to impact and fatigue, making them suitable for withstanding the rigorous demands of the automotive industry. Additionally, steel round bars can be easily machined and formed into different shapes, allowing for customization and precise engineering in automotive manufacturing processes. Therefore, steel round bars are a reliable and widely used material in the automotive manufacturing industry.

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