Brightly Round Bar

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Product Description:

Specifications of Bearing Steel Round Bar

Grade	AISI 52100, ASTM E52100, DIN 1.3505,JIS SUJ2, GCr15
Dimensions	Diameter: 30-60mm Length: 2000-13000mm or as required
Shape	Round Bar
Type	Alloy Steel Bar
Delivery Condition	Black Surface
Material	Bearing Steel
Technique	Hot Rolled

Usage and Applications of Bearing Steel Round Bar

Bearing steels are used for ball and roller bearing applications and are comprised of low carbon steels and high carbon through harden able steel.

Usage of Bearing Steel

First the famous 1C-1.5Cr steel from which the majority of bearings are made. Its structure is apparently well-understood and the focus is on purity in order to avoid inclusions which initiate fatigue during rolling contact. Then there is the M50 steel and its variants, from which bearings which serve at slightly higher temperatures in aeroengines are manufactured, based on secondary-hardened martensite.

Tapered roller bearing are generally used to support combined load mainly consisting of radial load. Their cups are separable for easy assembling ,During mounting and using, radial clearance and axial clearance can be adjusted and preloaded mounting can be made.

Packaging & Delivery of Bearing Steel Round Bar

Packaging Detail: ASTM 52100 Steel in seaworthy packing or on customer request; Packed in bundles with standard export sea-worthy package or as customer require

Delivery Detail: 45 days after confirmed

Trade terms: FOB, CFR, CIF ou as customer's required

MOQ: 25 tons or at customer's demands. If the quantity is good, the price will be better.

Processing of Bearing Steel Round Bar

The processing of Bearing Steel Round Bar is hot rolled (strictly control sulphur, phosphorus and non-metallic inclusions content and distribution)

Chemical Composition of Bearing Steel Round Bar

C	Si	Mn	Cr	Ni	Cu
			Equal or less than
0.95-1.05	0.15-0.35	0.25-0.45	Cr:1.40-1.65	0.30	0.25

All products' chemical composition and specification can be design according to customers' requirement.

Note of Bearing Steel Round Bar

1. According to national standard (GB) for our products, if not, supply according to national standards (GB) or agreement.

2. We can not only provide electric furnace +LF+VD and electros lag re-melting (ESR) steel forging materials, but also forging products of piece, bar, etc.

3. Our company is equipped with roll equipment and can provide our customers with roll billets or finished.

4. Please send us your detailed specifications when inquire. We will reply to you ASAP.

5. Certificate of quality is issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness. forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the certificate of quality

Q:What are the advantages of using chromium-molybdenum alloy steel round bars?: There are several advantages of using chromium-molybdenum alloy steel round bars: 1. High Strength: Chromium-molybdenum alloy steel round bars have excellent strength properties, making them suitable for applications that require a high level of strength and durability. This makes them ideal for use in heavy machinery, construction equipment, and other demanding applications. 2. Corrosion Resistance: The addition of chromium in the alloy steel composition enhances its corrosion resistance properties. This makes chromium-molybdenum alloy steel round bars highly resistant to rust and other forms of corrosion, making them suitable for use in harsh environments and outdoor applications. 3. Heat Resistance: Chromium-molybdenum alloy steel round bars have excellent heat resistance properties, allowing them to withstand high temperatures without losing their structural integrity. This makes them suitable for use in applications that involve high temperature conditions, such as in boilers, pressure vessels, and heat exchangers. 4. Wear Resistance: The presence of molybdenum in the alloy steel composition provides excellent wear resistance properties. This means that chromium-molybdenum alloy steel round bars can withstand the effects of wear and abrasion, making them suitable for use in applications that involve high levels of friction and wear, such as in mining equipment, drilling tools, and automotive components. 5. Machinability: Chromium-molybdenum alloy steel round bars have good machinability, allowing them to be easily shaped and formed into various configurations. This makes them suitable for use in applications that require complex shapes and designs, such as in automotive parts, machine components, and tooling. Overall, the advantages of using chromium-molybdenum alloy steel round bars make them a popular choice for a wide range of applications in various industries. They offer high strength, corrosion resistance, heat resistance, wear resistance, and good machinability, making them a reliable and versatile material for many demanding applications.

Q:Can steel round bars be bent or shaped?: Yes, steel round bars can be bent or shaped. Steel is a highly malleable material that can undergo various forming processes to achieve desired shapes. It can be bent using methods such as hot bending, cold bending, or induction bending. The bending process involves applying force to the steel bar, causing it to deform and take on the desired shape. Additionally, steel round bars can also be shaped through machining processes such as turning, drilling, milling, or grinding. These processes allow for the creation of various profiles, including cylindrical, square, or hexagonal shapes, among others. Overall, steel round bars offer flexibility in terms of bending and shaping, making them versatile for use in a wide range of applications.

Q:How do you identify the grade of a steel round bar?: The grade of a steel round bar can be identified through several methods. One way is to check the markings or labels on the bar itself. Manufacturers often stamp or engrave the grade directly onto the surface of the bar. These markings typically include information such as the grade designation (e.g., 304, 316, 4140), which represents the specific alloy composition, and may also include additional details such as the heat or lot number. Another method is to refer to the mill test certificate (MTC) that accompanies the steel round bar. The MTC provides comprehensive information about the composition, mechanical properties, and other relevant specifications of the material. The MTC is usually issued by the steel mill or supplier and can be requested upon purchase. Moreover, visual inspection and physical testing can help identify the grade of a steel round bar. Visual inspection involves observing the bar's appearance, texture, and color. Different grades of steel may exhibit distinct characteristics, such as a shiny or matte finish, specific surface treatments, or variations in color due to different alloying elements. Physical testing methods, such as tensile or hardness testing, can provide further confirmation of the steel grade. These tests measure the mechanical properties of the material, such as its strength, ductility, and hardness. By comparing the test results with known standards and specifications for different steel grades, one can determine the grade of the round bar. In summary, to identify the grade of a steel round bar, one can check for markings on the bar, refer to the mill test certificate, visually inspect the bar, and perform physical tests to assess its mechanical properties.

Q:What are the different cutting methods for steel round bars?: There are several cutting methods for steel round bars, including sawing, shearing, flame cutting, and abrasive cutting.

Q:What are the different types of threads used for steel round bars?: The usage of various thread types for steel round bars depends on the specific application and requirements. The most common thread types for steel round bars are as follows: 1. Unified National Coarse (UNC) Thread: This thread type is widely utilized for general-purpose applications and offers a relatively coarse pitch. It is suitable for most common applications that do not demand high strength. 2. Unified National Fine (UNF) Thread: UNF threads have a finer pitch compared to UNC threads and provide better resistance to vibration. They are commonly employed in applications that require a higher level of thread engagement and improved thread performance. 3. Metric Thread: Metric threads are prevalent in countries that adopt the metric system. They are characterized by their pitch, which determines the distance between each thread. Metric threads offer a precise and standardized threading solution for diverse applications. 4. Acme Thread: Acme threads possess a trapezoidal shape and find frequent use in applications necessitating high strength and resistance to wear and tear. They are often employed in heavy-duty machinery like lead screws, jackscrews, and power transmission systems. 5. Buttress Thread: Buttress threads have a triangular shape, with one side perpendicular to the thread axis. This unique design enables them to bear high loads and resist axial forces in a specific direction. Buttress threads are commonly found in applications involving high-pressure fluid flow, such as hydraulic cylinders and pumps. 6. Whitworth Thread: Whitworth threads were extensively used in the past but have become less common in modern times. They have a rounded profile and a coarse pitch. Whitworth threads can still be found in older machinery and equipment. Choosing the appropriate thread type for a specific application is crucial to ensure the proper fit, functionality, and durability of the steel round bar. Factors such as load requirements, environmental conditions, compatibility with mating parts, and industry standards will determine the suitable thread type for a given situation.

Q:How many tons of pressure can the round steel of 70 inches bear?: This simply refers to the vertical compression. The problem of the bracket is whether the round steel is vertically compressed, whether the stiffness of the structure can be safely supported, whether the supporting foundation can withstand the pressure or not, that is a must be taken into consideration.

Q:How are steel round bars tested for quality and strength?: Steel round bars are tested for quality and strength through various methods to ensure they meet the required specifications and standards. One common test is the tensile test, which measures the bar's ability to withstand tension. During this test, a sample of the steel bar is subjected to a gradually increasing load until it reaches its breaking point. The maximum load it can withstand is recorded, along with the elongation and reduction in area of the sample. These values provide valuable information about the bar's strength and ductility. Another test used is the hardness test, which measures the resistance of the steel bar to indentation or penetration. This test is performed using a hardness testing machine that applies a specific force to a small indenter, such as a diamond or a steel ball, and measures the depth or size of the resulting indentation. The hardness values obtained can indicate the bar's strength and its ability to resist wear and deformation. In addition to these mechanical tests, steel round bars are also subject to non-destructive testing methods. Ultrasonic testing is commonly used to detect internal defects or inconsistencies in the steel bar's structure. This technique involves transmitting high-frequency sound waves through the bar and analyzing the reflected waves to identify any irregularities. Magnetic particle inspection is another non-destructive test that uses magnetic fields and magnetic particles to detect surface or near-surface defects in the steel bar. Chemical analysis is also crucial in determining the quality of steel round bars. This analysis involves testing the composition of the steel to ensure it meets the required chemical specifications. It helps identify the presence of impurities or elements that can affect the bar's performance and durability. Overall, steel round bars undergo a combination of mechanical, non-destructive, and chemical tests to assess their quality and strength. These tests provide valuable information to manufacturers, ensuring that the steel bars meet the necessary standards and are suitable for their intended applications.

Q:How do you calculate the length of a steel round bar?: In order to determine the length of a steel round bar, it is necessary to measure its diameter and employ a basic formula that involves the diameter and the mathematical constant pi (π). To begin, utilize a caliper or measuring tape to measure the diameter of the steel round bar at its widest point. It is important to ensure an accurate outcome by measuring across the center of the bar. Once the diameter has been obtained, the circumference of the round bar can be calculated by multiplying the diameter by pi (π). The formula for calculating the circumference is: Circumference = π × Diameter Lastly, to ascertain the length of the round bar, one must either be aware of the number of complete rotations it makes or measure the distance it covers. If the number of rotations is known, multiply the circumference by the number of rotations. If measuring the distance covered, simply utilize the measured distance as the length of the round bar.

Q:What is the toughness of a steel round bar?: The toughness of a steel round bar refers to its ability to resist fracture or deformation under stress. It is a measure of how well the steel can absorb energy and withstand impact without breaking. The toughness of a steel round bar depends on various factors such as the composition of the steel, its microstructure, and any heat treatment it has undergone. Generally, high-strength and alloy steels tend to have higher toughness due to their enhanced mechanical properties. Additionally, factors such as the presence of impurities, grain size, and the presence of any defects or cracks within the material can also affect its toughness. To determine the toughness of a steel round bar, tests such as the Charpy impact test or the Izod test are commonly performed to measure the energy absorbed by the material before it fractures. Overall, the toughness of a steel round bar is an important characteristic to consider when selecting a material for applications where high impact resistance is required, such as in construction, automotive, or aerospace industries.

Q:Can steel round bars be used for making fasteners?: Yes, steel round bars can be used for making fasteners. Steel round bars are commonly used in the manufacturing of fasteners such as bolts, screws, and rivets. The strength and durability of steel make it an ideal material for fasteners, as it can withstand high levels of stress and provide a secure connection. Additionally, steel round bars can be easily machined and threaded to create the desired shape and size needed for fasteners. Overall, steel round bars are a reliable and commonly used material in the production of fasteners.

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