Hot Rolled Round Steel C45 Bars System 1

Hot Rolled Round Steel C45 Bars System 2

Hot Rolled Round Steel C45 Bars System 3

Hot Rolled Round Steel C45 Bars System 4

Hot Rolled Round Steel C45 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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C	Si	Mn	P	S	Cr	Ni	Cu	Al
0.4~0.5	0.2~0.3	0.6~0.7	≤0.016	≤0.008	≤0.023	≤0.014	0.018	≤0.005

GB	DIN	JIS	AISI
45#	1.1191	S45C	1045

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 making conveyor belts or rollers?: No, steel round bars are not typically used for making conveyor belts or rollers. Conveyor belts and rollers are usually made from materials such as rubber, polyurethane, or other flexible and durable materials that can withstand the constant movement and friction involved in conveying items.

Q: How do steel round bars compare to other materials in terms of strength?: Steel round bars are known for their exceptional strength compared to other materials. Steel has a high tensile strength, which means it can withstand heavy loads and resist deformation. In comparison to materials like aluminum or plastic, steel round bars offer superior strength and durability, making them ideal for applications that require structural integrity and stability.

Q: What is the minimum diameter available for steel round bars?: The specific manufacturing and supplier capabilities can cause variations in the minimum diameter of available steel round bars. Typically, a wide range of diameters can be found, starting from as small as 1/8 inch (3.175 mm) and going up to several inches or even larger. To ascertain the exact minimum diameter for steel round bars that aligns with your specific needs, it is advisable to consult with steel suppliers or manufacturers.

Q: What is the fatigue strength of a steel round bar?: The fatigue strength of a steel round bar refers to its ability to withstand repeated or cyclic loading without failure. It is a measure of the bar's resistance to fatigue or fatigue-induced failure. The fatigue strength of a steel round bar depends on various factors such as the material composition, manufacturing process, surface finish, and geometry of the bar. To determine the fatigue strength of a steel round bar, fatigue tests are typically conducted using standardized procedures. These tests involve subjecting the bar to repeated loading cycles that simulate real-world conditions. The bar is subjected to a specific stress amplitude or stress range, and the number of cycles required to cause failure is recorded. The fatigue strength of a steel round bar is usually expressed as the stress level or stress range at which failure occurs after a certain number of cycles, such as 10^6 cycles or 10^7 cycles. This value is commonly referred to as the fatigue limit or endurance limit. For steel round bars, the fatigue strength is generally high compared to other materials, and it is usually expressed in terms of stress in megapascals (MPa) or pounds per square inch (psi). It is important to note that the fatigue strength of a steel round bar can vary depending on factors such as the presence of surface defects, residual stresses, temperature, and environmental conditions. Therefore, it is crucial to consider these variables when determining the fatigue strength of a specific steel round bar for a given application.

Q: What are the different types of steel round bar surface finishes?: There are several different types of surface finishes that can be applied to steel round bars. Some of the most common finishes include: 1. Bright: This finish involves polishing the steel round bar to a high gloss, resulting in a shiny and reflective surface. It is often used for decorative purposes or in applications where aesthetics are important. 2. Grinded: Grinded finishes involve using a grinding wheel or abrasive belt to remove the outer layer of the steel round bar, resulting in a smooth and even surface. This finish is often used to remove imperfections or to create a uniform surface for further processing. 3. Brushed: Brushed finishes involve using a wire brush or abrasive pad to create a pattern of fine lines on the surface of the steel round bar. This finish is often chosen for its unique aesthetic appeal and is commonly used in architectural applications. 4. Powder-coated: Powder coating involves applying a dry powder to the surface of the steel round bar and then curing it using heat. This finish provides a durable and corrosion-resistant coating that can be applied in various colors and textures. 5. Galvanized: Galvanizing is the process of applying a protective zinc coating to the steel round bar to prevent corrosion. This finish is commonly used in outdoor or marine applications where the steel is exposed to moisture or harsh environmental conditions. 6. Oiled: Oiled finishes involve applying a thin layer of oil to the surface of the steel round bar. This finish provides temporary protection against corrosion and is often used for short-term storage or transportation purposes. 7. Shot-blasted: Shot blasting involves propelling small metallic or non-metallic particles at high speeds onto the surface of the steel round bar. This process creates a textured finish that helps to improve adhesion of subsequent coatings or paints. Each type of surface finish has its own unique benefits and is chosen based on the specific requirements of the application.

Q: What is the typical lead time for manufacturing steel round bars?: The typical lead time for manufacturing steel round bars can vary depending on several factors, such as the quantity and size of the bars, the complexity of the manufacturing process, and the availability of raw materials. However, a general estimate for lead time could range from a few weeks to a couple of months. It is always best to consult with the specific manufacturer for an accurate timeframe.

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.

Q: What are the different bending methods for steel round bars?: There are several different bending methods that can be used for steel round bars, depending on the desired outcome and the specific application. Some of the most common bending methods for steel round bars include: 1. Cold Bending: This method involves bending the steel round bars at room temperature without the use of heat. Cold bending is typically performed using specialized bending machines or tools that apply force to the bar to achieve the desired shape. 2. Heat Bending: Heat bending involves heating the steel round bar to a specific temperature to make it more malleable and easier to bend. Once heated, the bar is bent using specialized tools or fixtures. Heat bending is often used for more intricate or precise bends that cannot be achieved through cold bending alone. 3. Induction Bending: Induction bending is a process that uses an induction coil to heat the steel round bar locally, allowing it to be bent gradually and smoothly. This method is commonly used for large diameter or thick-walled round bars, as it provides greater control over the bending process and minimizes distortion or damage to the material. 4. Roll Bending: Roll bending involves passing the steel round bar between a set of rollers that gradually bend it into the desired shape. This method is often used for larger diameter or longer round bars, as the rollers provide continuous support and ensure consistent bending across the entire length of the bar. 5. Mandrel Bending: Mandrel bending is a technique that uses a mandrel, or a rod inserted inside the steel round bar, to support the inner walls during the bending process. By using a mandrel, the bar maintains its shape and prevents the formation of wrinkles or deformations on the inside of the bend. Each bending method has its own advantages and limitations, and the choice of method will depend on factors such as the size and thickness of the round bar, the required bend radius, and the desired quality of the final product. It is important to consult with experts or professionals in the field to determine the most suitable bending method for a specific steel round bar application.

Q: What is the maximum temperature a steel round bar can withstand?: The maximum temperature a steel round bar can withstand depends on several factors such as the specific type of steel, its composition, and the intended application. Generally, most common grades of steel have a maximum temperature limit of around 1,200 to 1,400 degrees Fahrenheit (650 to 760 degrees Celsius). However, some stainless steels can withstand higher temperatures, reaching up to 2,200 degrees Fahrenheit (1,200 degrees Celsius). Additionally, specialized heat-resistant alloys such as Inconel or Hastelloy can withstand even higher temperatures, up to 2,500 degrees Fahrenheit (1,370 degrees Celsius) or more. It is crucial to consult the manufacturer's specifications or conduct thorough research to determine the precise maximum temperature limit for a specific steel round bar in order to ensure its safe and efficient use.

Q: Can steel round bars be plated?: Indeed, it is possible to plate steel round bars. Plating, a widely employed technique, serves to augment the aesthetics and safeguard the surface of the bars. The choice of plating material, be it chrome, nickel, or zinc, hinges upon the desired outcome and intended usage of the steel bars. Through plating, one can achieve heightened resistance to corrosion, improved hardness or wear resistance, as well as an appealing final touch. It is imperative to underscore the significance of adequately preparing and cleansing the steel surface prior to plating, as this guarantees a robust and top-notch plated finish.

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