ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR
- Ref Price:
-
- 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.
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: How are steel round bars heat treated?
- To enhance the strength and hardness of steel round bars, as well as improve their mechanical properties, they undergo a heat treatment process comprising of three main steps: heating, soaking, and cooling. To begin with, the steel round bars are subjected to heating at a specific temperature referred to as the austenitizing temperature. This temperature is typically higher than the critical temperature of the steel, enabling the material to transform into its austenite phase. The exact austenitizing temperature varies depending on the type of steel and the desired properties. Once the steel round bars reach the austenitizing temperature, they are then soaked at this temperature for a specific duration. This soaking period ensures a complete transformation of the microstructure, promoting uniformity and preventing any thermal gradients within the material. The duration of soaking plays a vital role in determining the ultimate properties of the steel. After the soaking phase, the steel round bars undergo rapid cooling through a process known as quenching. Quenching is typically achieved by immersing the bars in a quenching medium, such as oil, water, or air, depending on the desired hardness and properties. The quenching process swiftly cools the bars, resulting in a martensitic transformation within the steel's microstructure. This transformation contributes to increased hardness and strength. Subsequently, the steel round bars may undergo an additional step called tempering. Tempering involves reheating the bars to a lower temperature, usually below the austenitizing temperature. This step aims to alleviate the brittleness caused by the quenching process while further enhancing the material's toughness and ductility. In summary, the heat treatment process for steel round bars involves heating to the austenitizing temperature, soaking for a specific duration, quenching to rapidly cool and harden the material, and potentially tempering to achieve the desired properties. This process allows for the customization and improvement of the steel's mechanical properties, making it suitable for a wide range of applications.
- Q: How do steel round bars compare to ceramic round bars?
- Steel round bars and ceramic round bars have distinct differences in terms of their properties and applications. Steel round bars are known for their exceptional strength and durability. They are made from alloys of iron and carbon, with additional elements such as manganese, chromium, and nickel. Steel bars are highly resistant to deformation, can withstand high temperatures, and have high tensile strength. Due to these properties, steel round bars are commonly used in construction, manufacturing, and engineering applications where strength and reliability are crucial. They are also easily machinable and can be shaped into various forms, making them versatile for different uses. On the other hand, ceramic round bars are made from non-metallic materials, such as clay, porcelain, or glass. Ceramics offer unique properties such as high resistance to heat, corrosion, and wear. They are also chemically inert and have excellent electrical insulation properties. Ceramic round bars are commonly used in applications where high temperatures, chemical resistance, or electrical insulation are required, such as in the aerospace industry or for manufacturing electronic components. When comparing steel round bars to ceramic round bars, it is important to consider the specific requirements of the application. Steel round bars are preferred for their exceptional strength and toughness, making them suitable for heavy-duty applications where mechanical stress and load-bearing capabilities are crucial. Ceramic round bars, on the other hand, are often chosen for their resistance to heat, chemicals, and electrical insulation properties, which are important in specialized industries. In summary, steel round bars and ceramic round bars have different properties and are suitable for different applications. Steel round bars are known for their strength and durability, making them suitable for heavy-duty applications, while ceramic round bars excel in high-temperature, chemical-resistant, and electrically insulating applications.
- Q: What are the typical hardness values for different grades of steel round bars?
- The hardness values for different grades of steel round bars can vary depending on the specific grade and the manufacturing process used. However, there are some typical hardness values that can be used as a general guideline. For low carbon or mild steel round bars, the typical hardness values range from about 120 to 250 Brinell Hardness (HB). These grades of steel are known for their relatively low strength and hardness but can be easily machined and welded. Medium carbon steel round bars, commonly used in applications that require higher strength and hardness, typically have hardness values ranging from about 200 to 400 HB. These grades of steel are often used in construction, automotive, and machinery industries. High carbon or alloy steel round bars, which offer even greater strength and hardness, can have hardness values ranging from 400 to 700 HB or even higher. These grades of steel are commonly used in applications that require high wear resistance, such as cutting tools, gears, and bearings. It is important to note that these hardness values are approximate and can vary depending on factors such as heat treatment, alloy composition, and the specific manufacturing process employed. Therefore, it is always recommended to consult the manufacturer's specifications or conduct hardness testing to determine the exact hardness values for a specific grade of steel round bar.
- Q: Are steel round bars suitable for decorative purposes?
- Indeed, decorative purposes can be served by steel round bars. Steel, being a versatile and durable material, can be molded and crafted into numerous designs and patterns. The application of steel round bars extends to the creation of decorative elements like railings, furniture, sculptures, and architectural details. The polished and lustrous surface of steel contributes a contemporary and elegant touch to any area. Moreover, the strength and longevity associated with steel make it a pragmatic option for decorative endeavors, as it can endure environmental conditions and preserve its visual appeal throughout time.
- Q: What is the composition of steel round bars?
- Steel round bars primarily consist of iron and carbon, along with small amounts of other elements like manganese, silicon, sulfur, and phosphorus. The primary element, iron, provides the steel bar with strength and structural integrity. The carbon content is vital in determining the bar's hardness and strength, where higher carbon levels result in a harder and stronger material. Manganese contributes to the overall strength and toughness of the steel, while silicon aids in enhancing its resistance to oxidation and scaling at high temperatures. Sulfur and phosphorus, considered impurities, are kept at low levels to prevent any negative impact on the mechanical properties of the material. In summary, the composition of steel round bars is meticulously controlled to achieve the desired strength, durability, and specific properties required for different applications.
- Q: What are the different marking methods for steel round bars?
- The different marking methods for steel round bars include stamping, engraving, etching, laser marking, and inkjet printing. These methods are used to imprint important information such as the grade, size, heat number, manufacturer's logo, and other specifications on the surface of the round bars.
- Q: What are the different types of steel round bars available in the market?
- In the market, one can find a variety of steel round bars, each with its own unique characteristics and applications. Here are some of the most commonly used types: 1. Mild Steel Round Bars: Known for their versatility and affordability, mild steel round bars are widely used. They have a low carbon content, making them easy to weld and machine. This makes them suitable for a wide range of applications. 2. Carbon Steel Round Bars: With a higher carbon content than mild steel, carbon steel round bars offer increased strength and hardness. They are commonly used in applications requiring high strength, such as construction and machinery manufacturing. 3. Alloy Steel Round Bars: To improve their mechanical properties, alloy steel round bars are made by adding various alloying elements like chromium, nickel, or molybdenum. These bars offer enhanced strength, toughness, and resistance to wear and corrosion. They are ideal for industries like aerospace, automotive, and oil and gas. 4. Stainless Steel Round Bars: Stainless steel round bars are highly corrosion-resistant due to the presence of chromium, forming a protective oxide layer on the surface. They are widely used in industries where corrosion resistance and hygiene are essential, such as food processing, pharmaceuticals, and chemical processing. 5. Tool Steel Round Bars: Tool steel round bars are specifically designed for tooling applications like cutting, drilling, and shaping materials. They possess high hardness, wear resistance, and heat resistance, making them suitable for manufacturing tools and dies. 6. Duplex Steel Round Bars: Duplex steel round bars are a type of stainless steel that contains both austenitic and ferritic microstructures. They offer a combination of high strength, excellent corrosion resistance, and good weldability. These bars find applications in the chemical and petrochemical industries. These examples demonstrate the diverse options available in the market. The choice of the appropriate type depends on specific requirements, including strength, corrosion resistance, machinability, and cost.
- Q: What is the difference between hot rolled and cold rolled steel round bars?
- The main difference between hot rolled and cold rolled steel round bars lies in the process of production. Hot rolled steel round bars are formed by heating the steel above its recrystallization temperature and then rolling it into the desired shape. This process makes the steel more malleable and ductile, resulting in a rougher surface finish. On the other hand, cold rolled steel round bars are formed by rolling the steel at room temperature. This process produces a smoother surface finish and tighter dimensional tolerances, but it also makes the steel less malleable. Overall, the choice between hot rolled and cold rolled steel round bars depends on the specific application and desired characteristics of the end product.
- Q: Can steel round bars be used for making sway bars?
- Yes, steel round bars can be used for making sway bars. Sway bars, also known as stabilizer bars or anti-roll bars, are used in vehicles to reduce body roll and improve stability when cornering. Steel round bars are commonly used for this purpose due to their high strength and durability. The round shape allows for even distribution of forces and provides torsional stiffness, which is crucial for sway bars to effectively control body roll. Additionally, steel is readily available, cost-effective, and can be easily fabricated into the desired shape and size for sway bar applications.
- Q: Can steel round bars be used in outdoor applications?
- Yes, steel round bars can be used in outdoor applications. Steel is a strong and durable material that is resistant to corrosion, making it suitable for outdoor use. Round bars are often used in construction, manufacturing, and infrastructure projects, where they provide structural support and reinforcement. Additionally, steel round bars can withstand various weather conditions, including rain, snow, and extreme temperatures, without losing their strength or integrity. However, it is important to select the appropriate type of steel for the specific outdoor application to ensure optimal performance and longevity.
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ALLOY HOT ROLLED ROUND BAR JIS/GB/DIN STANDAR
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 20000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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