Alloy Steel Round Bars 41Cr4

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Standard	DIN EN 10083-1
Grade	41Cr4
MOQ	25 Metric Ton
Diameter	8mm~1500mm
Length	6m,12m or as required.
Diameter Tolerance	As required
Condition of delivery	Hot rolled,Cold Rolled or as required.

Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)	Reduction of Area (%)	Charpy Impact (J)	Hardness (HB)
35cd4	≥980	≥785	≥9	≥45	≥47	≤207

Grade	C	Cr	Si	Mn	P	S	Ni	Cu
41Cr4	0.37-0.44	0.80-1.10	0.17-0.37	0.50-0.80	≤0.035	≤0.035	≤0.30	≤0.30

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 are the different types of connections used with steel round bars?: There are several types of connections commonly used with steel round bars, depending on the specific application and structural requirements. Some of the different types of connections include: 1. Welded Connections: This is one of the most common types of connections used with steel round bars. Welding involves fusing two or more round bars together using heat and pressure. It provides a strong and durable connection. 2. Mechanical Connections: Mechanical connections involve using bolts, nuts, or other mechanical fasteners to join steel round bars together. These connections are easy to install and can be disassembled if needed. They are commonly used in applications where frequent disassembly or reconfiguration is required. 3. Threaded Connections: In threaded connections, the steel round bars have threads cut into their ends, allowing them to be screwed together using nuts. This type of connection offers good strength and can be easily tightened or loosened. 4. Adhesive Connections: Adhesive connections involve using a high-strength adhesive or epoxy to bond steel round bars together. This type of connection is commonly used in applications where welding or mechanical connections are not feasible or desirable. 5. Interlocking Connections: Interlocking connections involve the use of specially designed couplers or connectors that fit over the ends of steel round bars, creating a secure connection. These connections are often used in construction projects where quick and efficient installation is required. 6. Grouted Connections: Grouted connections involve filling the gaps between steel round bars with a cementitious grout material. This helps to provide additional strength and stability to the connection. Grouted connections are commonly used in applications where high load capacities are required. It is important to choose the appropriate type of connection based on the specific requirements of the project, considering factors such as load capacity, installation ease, disassembly requirements, and structural integrity. Consulting with a structural engineer or a professional in the field is recommended to ensure the correct type of connection is chosen for the steel round bars.

Q: Can steel round bars be used in the aerospace manufacturing industry?: The aerospace manufacturing industry can indeed utilize steel round bars. In various aerospace applications like structural components, landing gear, engine components, and fasteners, steel round bars are a common choice. The reason behind this is the commendable strength and durability of steel, which makes it highly suitable for critical aerospace applications. Moreover, steel round bars can be conveniently machined and shaped into intricate forms, offering customization and precise engineering solutions in the aerospace sector. Furthermore, steel's ability to resist corrosion and withstand extreme temperatures enhances its reliability in aerospace manufacturing. Ultimately, due to their strength, durability, machinability, and corrosion resistance, steel round bars emerge as a versatile and extensively employed material in the aerospace industry.

Q: Can steel round bars be painted?: Yes, steel round bars can be painted. Painting steel round bars can help protect them from corrosion and enhance their appearance. However, before painting, the surface of the steel round bars should be properly prepared by cleaning, degreasing, and removing any rust or mill scale. This can be done using methods such as sandblasting, wire brushing, or chemical cleaning. Once the surface is adequately prepared, a primer specifically designed for steel should be applied to promote better adhesion of the paint. Finally, the desired paint can be applied to the steel round bars using brushes, rollers, or spray equipment. It is important to choose a paint that is suitable for outdoor use and provides sufficient protection against harsh weather conditions. Regular maintenance and periodic repainting may be required to ensure the longevity and durability of the painted steel round bars.

Q: How are steel round bars used in the construction of dams and reservoirs?: Due to their strength, durability, and versatility, steel round bars are essential components in the construction of dams and reservoirs. These bars, typically made of reinforced steel, play a vital role in reinforcing the concrete structures that make up dams and reservoirs. In dam construction, steel round bars are primarily used as reinforcement in concrete walls and foundations. Strategically placed within the concrete, these bars provide additional tensile strength, preventing cracking and ensuring the structural integrity of the dam. By withstanding the enormous pressure exerted by the water, the reinforcement helps prevent leaks or potential failures. Furthermore, steel round bars are utilized to strengthen the spillway gates and control structures of dams and reservoirs. These gates regulate the flow of water and prevent overflow during heavy rains or floods. By reinforcing these critical areas with steel round bars, engineers guarantee that the gates can endure the forces exerted by the flowing water, maintaining their functionality and preventing potential damage. In addition, steel round bars are used in the construction of penstocks, which are large pipes or conduits that transport water from reservoirs to turbines in hydroelectric power plants. These bars reinforce the penstocks, ensuring they can withstand the high pressure of the water as it flows through and powers the turbines. In conclusion, steel round bars are extensively applied in dam and reservoir construction to enhance the strength and durability of various structural components. Their ability to reinforce concrete walls, foundations, spillway gates, control structures, and penstocks makes them indispensable in ensuring the longevity and stability of these crucial water infrastructures.

Q: What are the factors to consider when selecting a steel round bar?: There are several factors to take into account when choosing a steel round bar. Firstly, it is crucial to evaluate the grade of steel. Each grade has different properties and strengths, so it is important to consider the specific application and requirements. For instance, if high corrosion resistance is needed, stainless steel grades such as 304 or 316 may be appropriate, while carbon steel grades like A36 or 1018 may be more suitable for structural purposes. Secondly, the dimensions and size of the round bar should be considered. This includes the diameter, length, and tolerance requirements. The size should be chosen based on the specific application, load-bearing capacity, and available installation space. Thirdly, the condition and surface finish of the round bar should be assessed. This includes factors like surface roughness, straightness, and any surface defects. The surface finish should be selected based on the desired aesthetics, functional requirements, and manufacturing process. Another important aspect is the availability and cost of the steel round bar. It is crucial to consider the availability of the desired grade and size from suppliers, as well as the associated cost. Comparing prices from different suppliers is advisable to ensure the best value for money. Furthermore, it is necessary to evaluate the required mechanical properties of the steel round bar. This includes factors like tensile strength, yield strength, hardness, and ductility. The mechanical properties should align with the intended application and load-bearing requirements. Lastly, any additional requirements or certifications should be considered. This could include compliance with specific industry standards (e.g., ASTM, ISO), certifications (e.g., RoHS, REACH), or specific testing requirements (e.g., ultrasonic testing, impact testing). In conclusion, selecting a steel round bar involves considering the grade, dimensions, surface finish, availability, cost, mechanical properties, and any additional requirements. Taking these factors into account will ensure that the chosen steel round bar is suitable for the intended application and meets all necessary specifications.

Q: What is the maximum length of a steel round bar available?: The maximum length of a steel round bar available can vary depending on various factors such as the manufacturing capabilities, transportation limitations, and customer requirements. However, in general, steel round bars can be produced in lengths ranging from a few feet to several meters. The specific maximum length will depend on the size and diameter of the round bar, as well as other logistical considerations. It is important to consult with steel suppliers or manufacturers to determine the maximum length available for a specific type and size of steel round bar.

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 for making universal joints?: Yes, steel round bars can be used for making universal joints. Steel round bars are commonly used in the manufacturing of universal joints due to their strength, durability, and ability to handle high torque and rotational forces.

Q: How do you prevent scaling of steel round bars during heat treatment?: To prevent scaling of steel round bars during heat treatment, there are several measures that can be taken: 1. Use a protective atmosphere: Heat treatment can be carried out in a controlled atmosphere, such as in a furnace with a controlled gas environment. This prevents the exposure of the steel bars to oxygen, which is the primary cause of scaling. 2. Apply a protective coating: Coating the steel round bars with a protective substance, such as a refractory material or a thin layer of paint, can help prevent scaling. This coating acts as a barrier between the steel and the oxygen in the atmosphere, reducing the chances of scaling. 3. Use a reducing atmosphere: Instead of using a normal atmospheric environment, heat treatment can be conducted in a reducing atmosphere. This involves introducing gases like hydrogen or nitrogen into the furnace, which react with the oxygen to create a more controlled environment and prevent scaling. 4. Control the heating rate: Rapid heating can lead to increased scaling due to the sudden exposure of the steel to high temperatures. By controlling the heating rate, such as using a gradual ramp-up in temperature, scaling can be minimized. 5. Limit the exposure time: Minimizing the time that the steel round bars are exposed to high temperatures can help prevent scaling. This can be achieved by optimizing the heat treatment process and ensuring that the bars are not held at elevated temperatures for longer than necessary. 6. Clean the surface before heat treatment: Prior to heat treatment, it is crucial to remove any contaminants or residues from the surface of the steel round bars. This can be done through mechanical cleaning methods like wire brushing or chemical cleaning techniques, ensuring a clean surface that is less prone to scaling. By implementing these preventative measures, the scaling of steel round bars during heat treatment can be effectively minimized, leading to improved quality and performance of the treated bars.

Q: What are the different types of heat treatments applied to steel round bars?: Steel round bars can undergo various heat treatments to enhance their mechanical properties and improve their performance in different applications. Some commonly used heat treatments include: 1. Annealing: Steel round bars are heated to a specific temperature and then slowly cooled. This process relieves internal stresses, improves ductility, and increases toughness. 2. Normalizing: Steel round bars are heated above the critical transformation point and then cooled in still air. Normalizing improves the structure and mechanical properties of the steel, making it more uniform and reducing residual stresses. 3. Quenching: Steel round bars are rapidly cooled by immersing them in a quenching medium like oil or water. This heat treatment transforms the austenite phase into martensite, increasing the hardness and strength of the steel. 4. Tempering: After quenching, the hardened steel round bars are reheated to a specific temperature and slowly cooled. Tempering reduces brittleness and improves toughness and ductility while maintaining an appropriate level of hardness. 5. Stress Relieving: This heat treatment is used to reduce residual stresses in the steel round bars that may have been introduced during previous manufacturing processes. The bars are heated to a temperature below the transformation point and slowly cooled. Stress relieving improves dimensional stability and reduces the risk of distortion or cracking. 6. Case Hardening: Carbon or nitrogen is introduced into the outer layer of the steel round bars, creating a hard and wear-resistant surface while maintaining a tough and ductile core. These examples illustrate the different heat treatments that can be applied to steel round bars. The choice of heat treatment depends on the desired mechanical properties and specific application requirements.

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