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: Can steel round bars be plated with other metals?: Yes, steel round bars can be plated with other metals. Plating is a process in which a thin layer of one metal is applied to the surface of another metal. This is commonly done to enhance the appearance of the steel round bar or to provide it with additional properties such as corrosion resistance or improved conductivity. The plating process involves immersing the steel round bar in a solution that contains ions of the desired metal. Through the use of electrical currents or chemical reactions, the metal ions are deposited onto the surface of the steel, forming a thin and uniform coating. Popular metals used for plating steel round bars include nickel, chrome, zinc, and copper. Plating is a versatile and cost-effective method to improve the performance and aesthetics of steel round bars for various applications.

Q: What is the density of a steel round bar?: The density of a steel round bar depends on the specific type of steel being used, as there are various steel alloys with different densities. However, on average, the density of a steel round bar is usually around 7,800 kilograms per cubic meter (kg/m³).

Q: Are steel round bars suitable for heat exchanger applications?: Heat exchanger applications can benefit from the use of steel round bars. Steel is a widely utilized material in various industries, including heat exchangers, because of its exceptional thermal conductivity and strength. The round shape of the bars simplifies their fabrication and installation in heat exchanger systems. For applications requiring heat exchange, like power plants, chemical processes, HVAC systems, and refrigeration units, steel round bars are ideal as they efficiently transfer heat between two fluids. Moreover, steel provides good corrosion resistance, which is crucial for heat exchangers that encounter different fluids. By implementing proper design and material selection, steel round bars can reliably withstand high temperatures and pressure differentials in heat exchanger applications.

Q: What are the different types of defects that can occur in steel round bars?: There are several types of defects that can occur in steel round bars. These defects can vary in their severity and impact on the overall quality and performance of the bars. Some of the common types of defects found in steel round bars include: 1. Surface defects: These defects are visible on the external surface of the bar and can include scratches, pits, and scaling. While surface defects may not affect the structural integrity of the bar, they can impact its aesthetic appeal and can potentially lead to corrosion if not properly addressed. 2. Internal defects: Internal defects are imperfections that occur within the body of the steel round bar. These defects can include voids, inclusions, and segregation. Internal defects can weaken the bar's mechanical properties and compromise its structural integrity. They can also lead to cracking or failure under stress. 3. Dimensional defects: Dimensional defects refer to variations in the size or shape of the steel round bar. These defects can occur during the manufacturing process and can include variations in diameter, length, or straightness. Dimensional defects can affect the bar's functionality and compatibility with other components in a structure or machinery. 4. Decarburization: Decarburization is a defect that occurs when the surface layer of the steel round bar loses carbon due to exposure to high temperatures during manufacturing or heat treatment processes. This defect can weaken the bar's hardness and strength, making it more susceptible to wear, fatigue, or failure. 5. Lamination: Lamination defects occur when there are layers or separations within the steel round bar. These defects can result from improper rolling or processing techniques. Lamination defects can reduce the bar's strength and ductility, making it prone to fracture or failure. 6. Incomplete heat treatment: Heat treatment is often used to enhance the mechanical properties of steel round bars. However, if the heat treatment process is not performed correctly or if there are inconsistencies in the cooling or reheating process, the bar may have incomplete or uneven heat treatment. This can result in variations in hardness, strength, or toughness along the length of the bar. It is important to note that the severity and impact of these defects can vary depending on the specific application and requirements of the steel round bar. Manufacturers and quality control teams employ various testing and inspection methods to detect and mitigate these defects, ensuring that the bars meet the necessary standards and specifications.

Q: What is the difference between a rough turned and a polished steel round bar?: A rough turned steel round bar has undergone a preliminary machining process that removes surface imperfections and excess material, providing a slightly smoother finish. On the other hand, a polished steel round bar has undergone further polishing or grinding processes to achieve a much smoother and aesthetically appealing surface finish.

Q: What are the advantages of using nickel-titanium alloy steel round bars?: There are several advantages of using nickel-titanium (NiTi) alloy steel round bars. First and foremost, NiTi alloy steel round bars exhibit exceptional shape memory and superelasticity properties. This means that they can be deformed or bent, and then return to their original shape upon heating or removal of stress. This unique characteristic makes NiTi alloy steel round bars ideal for applications where flexibility and resilience are required, such as in the medical field for surgical instruments or orthodontic wires. Another advantage of using NiTi alloy steel round bars is their high corrosion resistance. Nickel and titanium are both highly resistant to corrosion, making the alloy extremely durable and long-lasting. This makes them suitable for various industrial applications, including marine environments, where exposure to moisture and saltwater can lead to corrosion of other metals. Additionally, NiTi alloy steel round bars have a high strength-to-weight ratio. Despite being lightweight, they possess excellent mechanical properties, including high tensile strength and good fatigue resistance. This makes them suitable for various engineering and structural applications, such as in aerospace, automotive, and construction industries. The lightweight nature of the bars also allows for easier handling and transportation. Furthermore, NiTi alloy steel round bars have excellent thermal stability, with a wide temperature range of usability. They can withstand extreme temperatures without losing their shape memory or superelasticity properties. This makes them suitable for applications that involve exposure to high or low temperatures, such as in aerospace or oil and gas industries. In summary, the advantages of using nickel-titanium alloy steel round bars include their shape memory and superelasticity properties, high corrosion resistance, high strength-to-weight ratio, and excellent thermal stability. These qualities make NiTi alloy steel round bars a versatile and reliable choice for a wide range of applications across various industries.

Q: Are steel round bars suitable for high-pressure applications?: Steel round bars are frequently a good choice for high-pressure applications. Steel is renowned for its strength and durability, making it an ideal material for handling high pressure. Round bars, in particular, possess exceptional tensile strength and resistance to deformation, rendering them suitable for utilization in high-pressure settings like hydraulic systems, oil and gas pipelines, and structural applications. Furthermore, steel round bars can be customized to meet specific strength and hardness criteria, further enhancing their aptness for high-pressure applications. Nevertheless, it is crucial to carefully consider the requirements of the particular application and seek advice from an engineer or industry expert to guarantee the selection of the most appropriate grade and size of steel round bar for optimal performance and safety.

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: What are the different grades of steel round bars available?: There are several grades of steel round bars available, including low carbon steel (mild steel), medium carbon steel, high carbon steel, alloy steel, stainless steel, and tool steel. Each grade has specific properties and characteristics that make them suitable for different applications and industries.

Q: What are the tolerances for steel round bars?: The tolerances of steel round bars can differ based on the specific requirements of the application and manufacturing process. Generally, steel round bars have specified tolerances for diameter, straightness, and length. For diameter tolerance, it is usual to find tolerances ranging from +/- 0.001 inches to +/- 0.005 inches. This means that the actual diameter of the steel round bar can deviate within this range from the specified diameter. The size and grade of the bar determine the specific tolerance. Straightness tolerance refers to the permissible deviation in the straightness of the bar. Typically, it is specified as a maximum deviation per unit length, such as 0.125 inches per foot. This ensures that the bar remains straight and within acceptable limits when measured along its length. Length tolerance determines the allowable variation in the overall length of the round bar. It can range from +/- 0.125 inches to +/- 0.5 inches, depending on the size and grade of the bar. This ensures that the bar meets the required length specifications. It is important to note that these tolerances can vary based on industry standards, customer specifications, and the manufacturing method employed. Moreover, certain applications may have stricter tolerance requirements, particularly in industries like aerospace or automotive where precision is crucial. To summarize, the tolerances for steel round bars encompass diameter, straightness, and length. The specific tolerances depend on the size, grade, and application of the round bar, as well as any relevant industry standards or customer specifications.

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