ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR

ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR System 1

ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR System 2

ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR System 3

ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR System 4

ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 20000 m.t./month

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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 different methods of cutting steel round bars?: Cutting steel round bars can be achieved through several methods, each with their own advantages and limitations. Among the commonly utilized techniques are: 1. Abrasive cutting: By utilizing a rotating abrasive wheel, the steel round bar can be ground down. Despite its speed and efficiency, this method often results in a rough cut surface and generates significant heat. 2. Bandsaw cutting: Steel round bars can be sliced using bandsaw machines, which feature a continuous band of toothed metal rotating around two wheels. Although bandsaws provide precise and smooth cuts, they tend to be slower compared to alternative methods. 3. Cold saw cutting: Cold saws are designed specifically for cutting metal, including steel round bars. These saws employ circular blades with teeth that are specially crafted to withstand the hardness of steel. While cold saws guarantee clean and accurate cuts, they generally operate at a slower pace than abrasive or bandsaw cutting. 4. Plasma cutting: Ideal for thicker steel round bars, plasma cutting involves using a focused jet of ionized gas to melt and remove the metal. This method yields precise and clean cuts, but necessitates specialized equipment and can be more costly than other techniques. 5. Laser cutting: Laser cutting employs a high-powered laser beam to melt and vaporize the metal, resulting in precise and clean cuts. This versatile method can be utilized for steel round bars of varying thicknesses, but it does require expensive equipment and may not be suitable for all applications. Ultimately, the chosen cutting method relies on several factors, including the thickness and hardness of the steel round bar, the desired cut quality, the availability of equipment, and the specific project requirements.

Q:What are the tolerance standards for steel round bars?: The tolerance standards for steel round bars differ based on specific requirements and industry norms. Generally, the tolerance for the diameter or size of steel round bars is specified as a plus or minus tolerance. This implies that the actual diameter of the bar may slightly deviate from the specified size, but it must fall within the specified tolerance range. In certain industries, like construction or manufacturing, the tolerance for steel round bars may be broader to facilitate easier fabrication and installation. For instance, a common tolerance range for the diameter of steel round bars used in construction could be ±0.005 to ±0.010 inches. In more precise applications, such as aerospace or automotive industries, the tolerance requirements for steel round bars are typically stricter. In these cases, the tolerance range can be significantly smaller, often ranging from ±0.001 to ±0.002 inches. It is important to note that different countries and organizations may have their own specific tolerance standards for steel round bars. These standards are usually outlined in industry-specific documents or specifications, such as ASTM (American Society for Testing and Materials) or ISO (International Organization for Standardization) standards. In summary, the tolerance standards for steel round bars vary depending on the specific requirements of the industry and application. The tolerance range for diameter can range from relatively broad to extremely tight, and these standards are typically defined by industry-specific organizations or standards bodies.

Q:Can steel round bars be used for making jewelry?: Yes, steel round bars can be used for making jewelry. While steel is not as commonly used for jewelry making as precious metals like gold or silver, it can still be a viable option for certain types of jewelry. Steel round bars are often used in industrial or modern jewelry designs, as they provide a sleek and contemporary look. Additionally, steel is highly durable, resistant to tarnish, and more affordable compared to other metals, making it suitable for those looking for a more budget-friendly option. However, it is important to note that steel can be heavier than other metals, so it may not be suitable for delicate or intricate jewelry designs. Furthermore, steel may cause skin reactions in individuals with metal allergies, so it is advisable to take precautions and ensure the steel used is hypoallergenic or coated with a protective layer. Ultimately, the choice to use steel round bars for making jewelry depends on the desired style, durability, and budget of the individual creating or purchasing the jewelry.

Q:What is the difference between a centerless ground and a precision ground steel round bar?: The main difference between a centerless ground and a precision ground steel round bar lies in the manufacturing process and the resulting quality of the finished product. A centerless ground steel round bar is manufactured using a machining technique called centerless grinding. In this process, the steel bar is placed between two grinding wheels, one rotating at a high speed and the other stationary. The rotating wheel removes material from the bar's surface, creating a smooth and evenly-sized round shape. Centerless grinding is known for its ability to produce bars with tight tolerances and excellent surface finish. On the other hand, a precision ground steel round bar is manufactured using a different process called precision grinding. In precision grinding, the steel bar is held in a chuck or fixture and rotated against a grinding wheel. The grinding wheel removes material from the bar's surface, creating a precise round shape with tight tolerances. Precision grinding is often used when a higher level of accuracy is required, such as in applications where the bar will be used as a critical component in machinery or tools. In summary, both centerless ground and precision ground steel round bars offer a high level of dimensional accuracy and surface finish. However, centerless grinding is a more efficient and cost-effective process for producing large quantities of round bars with consistent quality, while precision grinding is preferred for applications that require the highest level of dimensional accuracy and surface finish.

Q:What is the maximum elongation of steel round bars?: The maximum elongation of steel round bars can vary depending on the specific grade and composition of the steel. However, in general, the maximum elongation for steel round bars is typically around 20-30% of its original length. This means that the steel round bar can stretch or elongate by up to 20-30% before reaching its breaking point or ultimate tensile strength. It is important to note that this maximum elongation is influenced by various factors such as the quality of the steel, the manufacturing process, and any heat treatment applied to the bars. Therefore, it is advisable to consult the specific manufacturer's specifications and consider the intended application of the steel round bars to determine the maximum elongation for a particular case.

Q:What are the different types of finishes available for steel round bars?: Steel round bars offer a variety of finishes, each with its own unique properties and appearance. 1. Mill Finish: The most commonly used finish is the mill finish, where the steel is left in its natural state after rolling and cooling. This results in a rough texture and the possibility of surface imperfections. 2. Hot Rolled Finish: Achieved by heating the steel to high temperatures and shaping it through rolling. This finish provides a smooth surface and is typically used in applications where aesthetics are not a priority. 3. Cold Drawn Finish: Involves pulling the steel through a die to reduce its diameter and increase its length. This finish offers a smooth surface, improved dimensional accuracy, and tighter tolerances. 4. Polished Finish: Steel round bars can be polished to achieve a smooth and reflective surface. This is done using abrasive materials or compounds to remove imperfections and enhance appearance. 5. Ground Finish: A process that involves removing a thin layer of material from the steel surface using abrasive grinding wheels. This creates a smooth and even finish suitable for applications that require precise dimensions and tight tolerances. 6. Coated Finish: Steel round bars can be coated with different materials for added protection against corrosion or to enhance appearance. Common coatings include galvanization, which applies a layer of zinc, and powder coating, which provides durability and a decorative finish. When choosing a finish for a steel round bar, it is important to consider the specific application and desired properties. Factors such as corrosion resistance, aesthetics, dimensional accuracy, and surface quality should be taken into account.

Q:Are steel round bars suitable for marine environments?: Steel round bars can be suitable for marine environments, but their suitability depends on the specific type of steel and the conditions of the marine environment. Stainless steel is often the preferred choice for marine applications because it possesses excellent corrosion resistance properties. This is due to the presence of chromium in stainless steel, which forms a protective layer on the steel's surface, preventing corrosion and rusting. However, not all steel round bars are suitable for marine environments. Carbon steel, for instance, is more vulnerable to corrosion in marine settings, especially when exposed to saltwater. To prevent corrosion, carbon steel needs to be carefully protected with coatings or treatments. In addition to the type of steel, the conditions of the marine environment also play a significant role in determining the suitability of steel round bars. Factors such as water salinity, exposure to chemicals, temperature fluctuations, and physical stress can impact steel's corrosion resistance. In highly corrosive marine environments, it is advisable to use specialized marine-grade stainless steel or other corrosion-resistant alloys. Ultimately, it is crucial to choose the appropriate steel grade and consider extra protective measures like coatings or galvanization to enhance the durability and longevity of steel round bars in marine environments.

Q:Can steel round bars be welded?: Yes, steel round bars can be welded.

Q:What are the different types of surface treatments for steel round bars?: Steel round bars can be treated in several ways to enhance their properties and suit different applications. Some commonly used treatments for steel round bars include: 1. Zinc coating, also known as galvanization, provides excellent corrosion resistance. It is often used in outdoor and marine applications. 2. Black oxide coating chemically converts the surface of the steel round bars to a black iron oxide layer, offering enhanced corrosion resistance and an attractive black finish. This treatment is popular for decorative purposes. 3. Grinding is a surface treatment that involves using abrasive materials to remove the outer layer of the steel round bars. This process improves the surface finish, making them smoother and more visually appealing. 4. Shot blasting involves propelling small metallic or non-metallic particles at high velocity onto the surface of the steel round bars. It effectively removes impurities like mill scale and rust, resulting in a clean and uniform surface. 5. Chrome plating deposits a layer of chromium onto the surface of the steel round bars, providing excellent corrosion resistance and a polished, mirror-like finish. This treatment is commonly used when aesthetics and corrosion resistance are important. 6. Powder coating involves applying a dry powder electrostatically to the steel round bars, which is then cured under heat. This treatment creates a durable and visually appealing finish that is resistant to corrosion, chemicals, and UV rays. 7. Passivation is a chemical treatment that removes iron and other contaminants from the surface of the steel round bars. It leaves behind a clean and corrosion-resistant layer. Passivation is particularly important in industries such as medical and food, where cleanliness and corrosion resistance are crucial. These examples highlight the range of surface treatments available for steel round bars. The choice of treatment depends on specific requirements such as corrosion resistance, aesthetics, and durability.

Q:What are the different surface roughness options for steel round bars?: Steel round bars offer several surface roughness options, which are determined by the manufacturing process and the intended end-use. 1. Hot Rolled bars have a rough and scaled surface due to the high temperature during formation, causing oxidation and scale formation. The degree of roughness varies based on the manufacturing process. 2. Cold Drawn bars, processed at room temperature, provide a smoother surface finish compared to hot rolled bars. The cold drawing process reduces diameter through a die, resulting in a more consistent roughness. 3. Peeled and Polished bars undergo a secondary process to eliminate scale and surface defects. This involves peeling the outer layer and polishing the surface for a refined finish with minimal imperfections. 4. Ground bars are processed using a grinding machine to achieve precise and smooth surface finish. Irregularities and defects are removed, ensuring a uniform roughness. These bars are ideal for applications requiring dimensional accuracy and a smooth surface. 5. Turned and Polished bars are processed on a lathe machine, removing the outer layer using a cutting tool. This process yields a smooth and polished finish, making them suitable for applications where aesthetics and high-quality surface are crucial. Ultimately, the choice of surface roughness option for steel round bars depends on specific application requirements. Factors like dimensional accuracy, surface finish, and aesthetics influence the most suitable option for a given use case.

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