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:Can steel round bars be used for hydraulic cylinder applications?: Certainly, hydraulic cylinder applications can indeed make use of steel round bars. Given their remarkable strength and durability, steel round bars find frequent application in the fabrication of hydraulic cylinders. They exhibit exceptional resistance to impact, corrosion, and wear, rendering them ideal for demanding tasks. Furthermore, steel round bars can be conveniently machined and shaped to meet precise dimensional specifications for hydraulic cylinder components. Consequently, steel round bars enjoy significant popularity when it comes to hydraulic cylinder applications.

Q:What is the tensile strength of a steel round bar?: The tensile strength of a steel round bar can vary depending on the specific grade and manufacturing process. However, in general, steel round bars have a high tensile strength, typically ranging from 400 to 700 megapascals (MPa).

Q:Can steel round bars be used in the manufacturing of household appliances?: Household appliances can indeed make use of steel round bars. Steel, being a versatile and durable material, is widely employed in a variety of industries, including the manufacturing of appliances for homes. The construction of appliance frames, support structures, and even internal components can all benefit from the utilization of steel round bars. Its high strength and resistance to corrosion make steel an excellent choice for ensuring the longevity and durability of household appliances. Moreover, steel can be easily molded and shaped to precise dimensions, allowing for the creation of appliances with intricate designs. In summary, incorporating steel round bars into the manufacturing process of household appliances helps to produce products that are of superior quality, reliability, and longevity.

Q:Can steel round bars be used in the manufacturing of tools?: Yes, steel round bars can be used in the manufacturing of tools. Steel round bars are commonly used in tool manufacturing due to their high strength, durability, and versatility. They provide the necessary structural integrity and toughness required for various tools, such as wrenches, hammers, chisels, and screwdrivers. The round shape of the bar allows for easy machining and shaping into different tool components. Additionally, steel round bars can be heat treated to enhance their hardness and wear resistance, making them suitable for heavy-duty and high-performance tool applications.

Q:How do you prevent rust on steel round bars?: To prevent rust on steel round bars, there are several effective methods you can employ: 1. Apply a protective coating: One of the most common ways to prevent rust is by applying a protective coating such as paint, varnish, or enamel. These coatings act as a barrier, preventing moisture and oxygen from reaching the steel surface and causing rust. 2. Galvanization: Galvanizing steel round bars involves coating them with a layer of zinc. This process creates a protective barrier, as the zinc acts as a sacrificial anode, corroding instead of the steel. Galvanized steel is highly resistant to rust and is commonly used in outdoor applications. 3. Powder coating: Powder coating is another effective method of preventing rust on steel round bars. In this process, a dry powder is electrostatically applied to the steel surface, which is then cured under heat. The resulting coating provides excellent protection against rust and corrosion. 4. Regular cleaning and maintenance: Regularly cleaning your steel round bars and removing any dirt, moisture, or other corrosive substances can help prevent rust. Additionally, applying a rust inhibitor or lubricant can further protect the steel from corrosion. 5. Proper storage: Storing steel round bars in a dry and well-ventilated area can significantly reduce the risk of rust. Avoid storing them directly on the ground or in areas prone to moisture. Using pallets or racks to keep the steel elevated and properly spaced can also help prevent rust formation. 6. Avoid exposure to harsh environments: Exposing steel round bars to harsh environments, such as saltwater or acidic chemicals, significantly increases the risk of rust. If possible, try to protect the steel from prolonged exposure to these substances or consider using a more corrosion-resistant material in such conditions. By implementing these preventive measures, you can effectively reduce the likelihood of rust formation on steel round bars, ensuring their longevity and maintaining their structural integrity.

Q:Can steel round bars be galvanized?: Indeed, it is possible to galvanize steel round bars. Galvanization is a technique that entails applying a protective zinc coating to the steel surface to prevent corrosion. This technique can be employed on various steel products, including round bars. By galvanizing steel round bars, not only is their resistance to corrosion enhanced, but also their durability and lifespan. The galvanization process entails immersing the round bars in a bath of molten zinc, which adheres to the steel and forms a protective layer. This layer serves as a barrier, safeguarding the steel from moisture, chemicals, and other corrosive elements. Consequently, galvanized steel round bars are extensively used in outdoor applications, such as construction, fencing, and marine environments, where they are exposed to harsh conditions.

Q:How do you store and handle steel round bars?: There are several important considerations when it comes to the storage and handling of steel round bars. Firstly, it is crucial to have a clean and dry storage area that is free from moisture and corrosive materials. This will help prevent damage to the bars, such as rust. To prevent deformation or sagging, the steel round bars should be stored horizontally on racks or a flat surface. It is advisable to stack them in a manner that avoids putting excessive pressure on any individual bar, as this can cause bending or warping. For safe handling, it is recommended to use appropriate lifting equipment like cranes, forklifts, or hoists. Manual handling should be minimized, as steel bars can be heavy and difficult to maneuver. When using lifting equipment, it is important to secure and balance the bars properly to prevent accidents or injuries. Furthermore, it is essential to use protective measures such as gloves and safety shoes when handling steel round bars, as they may have sharp edges or rough surfaces. Wearing proper personal protective equipment (PPE) is necessary to minimize the risk of cuts, abrasions, or other injuries. Regular inspections should be carried out to check for any signs of damage, such as dents, cracks, or corrosion. Damaged bars should be separated and either repaired or discarded, depending on the severity of the damage. By adhering to these storage and handling guidelines, you can ensure the durability and quality of steel round bars, while also creating a safe working environment for yourself and others.

Q:What are the different grades of heat-treated steel round bars?: There exists a variety of heat-treated steel round bars with distinct properties and characteristics. Among the commonly used grades are: 1. 4140: Renowned for its high strength and toughness, this grade of heat-treated steel round bar possesses exceptional wear resistance and good machinability. It can undergo easy heat treatment to enhance its hardness and strength. 2. 4340: Heat-treated steel round bars belonging to this grade are recognized for their high tensile strength, toughness, and resistance to fatigue. They find extensive use in industries like aerospace and automotive, which demand superior strength and durability. 3. 8620: Characterized by its case hardening properties, this grade of heat-treated steel round bar exhibits good core strength, excellent toughness, and is frequently employed in applications requiring high wear resistance, such as gears, shafts, and pins. 4. 52100: Widely utilized in bearing applications, heat-treated steel round bars of this grade offer exceptional hardness, wear resistance, and high fatigue strength. They are specially designed to withstand heavy loads and provide long-lasting performance. 5. 1045: Recognized for its medium carbon content, this grade of heat-treated steel round bar provides good strength and impact resistance. It is commonly employed in applications that necessitate moderate strength and toughness, such as shafts, axles, and machinery parts. These examples represent only a fraction of the diverse grades of heat-treated steel round bars available in the market. The choice of grade depends on specific requirements like strength, hardness, toughness, and wear resistance. Seeking guidance from a knowledgeable professional is essential to determine the most suitable grade for one's particular needs.

Q:What are the different machining processes used for steel round bars?: There are several machining processes commonly used for steel round bars, depending on the desired outcome and specifications of the project. Some of the most common machining processes for steel round bars include: 1. Turning: Turning is a machining process where the round bar is rotated and a cutting tool is used to remove material, creating a desired shape or size. This process is commonly used to reduce the diameter of the round bar or to create precision cylindrical shapes. 2. Drilling: Drilling involves creating holes in the steel round bar using a rotating cutting tool called a drill bit. This process is often used to create holes for bolts, screws, or other fasteners. 3. Milling: Milling is a machining process that involves removing material from the surface of the steel round bar using a rotating cutting tool with multiple teeth. This process is used to create flat surfaces, grooves, or complex shapes on the round bar. 4. Grinding: Grinding is a process where abrasive particles are used to remove material from the steel round bar, creating a smooth surface finish or achieving specific tolerances. It is commonly used to refine the surface finish or to remove any imperfections. 5. Thread rolling: Thread rolling is a process used to create external threads on the steel round bar. A hardened steel die is pressed against the rotating round bar, causing the material to flow and form the desired threads. 6. Cold drawing: Cold drawing is a process where the steel round bar is pulled through a die to reduce its diameter and improve its surface finish. This process is used to create precise dimensions and improve the mechanical properties of the steel round bar. 7. Heat treatment: Heat treatment is not a machining process itself, but it is often used in conjunction with machining to enhance the properties of the steel round bar. Heat treatment processes such as annealing, quenching, and tempering can be used to improve hardness, strength, and toughness. These are just a few of the many machining processes that can be used for steel round bars. The specific process chosen will depend on factors such as the desired shape, size, surface finish, and mechanical properties required for the application.

Q:What are the common industries that use steel round bars?: Steel round bars are widely used in various industries due to their strength, durability, and versatility. Some of the common industries that heavily rely on steel round bars include construction, manufacturing, automotive, aerospace, energy, and oil and gas. In the construction industry, steel round bars are commonly used in the creation of structural frameworks, such as beams, columns, and trusses. They provide the necessary support and stability required for buildings, bridges, and other infrastructures. Additionally, steel round bars are utilized in reinforcement applications, such as concrete reinforcement bars (rebars), ensuring the structural integrity of various construction projects. The manufacturing industry also extensively utilizes steel round bars for the production of machinery, equipment, and tools. These round bars are often machined, forged, or heat-treated to create components like shafts, gears, fasteners, and bearings. Due to their high tensile strength and resistance to wear and tear, steel round bars are ideal for withstanding heavy loads and harsh operating conditions. In the automotive sector, steel round bars are employed in the manufacturing of various vehicle components, including axles, crankshafts, camshafts, and suspension systems. The use of steel round bars in these critical parts ensures the necessary strength and durability required for safe and reliable transportation. The aerospace industry heavily relies on steel round bars for the production of aircraft components. From landing gear to engine parts and structural elements, steel round bars are essential in ensuring the safety and performance of aircraft. The high strength-to-weight ratio of steel makes it an ideal material for aerospace applications, as it allows for lighter aircraft without compromising strength. Furthermore, the energy industry, including power generation and transmission, utilizes steel round bars in the construction of turbines, generators, and transmission towers. The robustness and corrosion resistance of steel make it suitable for withstanding extreme temperatures and harsh environments. Lastly, the oil and gas industry extensively uses steel round bars for drilling equipment, pipe fittings, valves, and other critical components. These round bars are required to withstand high-pressure and corrosive environments, making them essential for oil and gas exploration, extraction, and transportation. In conclusion, steel round bars find application in a wide range of industries, including construction, manufacturing, automotive, aerospace, energy, and oil and gas. Their strength, durability, and versatility make them a preferred choice for various applications, ensuring the safety, reliability, and efficiency of numerous industrial processes.

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