Bearing Steel Bar
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25MT m.t.
- Supply Capability:
- 600000TONS/YEAR m.t./month
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Specifications of Bearing Steel Bar
1. Dimensional sizes: Thickness: 14~100mm.Length:3000~5800mm,Diameter :14-500mm
2.Chemical composition: C=0.96~1.05,Si=0.15~0.35,Mn=0.25~0.45,Cr=1.4~1.65,P≤0.025,S≤0.025,Ni≤0.22,Cu≤0.20,Mo≤0.08
3. Grade: SAE51200/ GCr15 / 100cr6
4. Heat Treatment:
Soft annealing: heat to 680-720°C, cool slowly.
Hardness after annealing: Max. 241 HB
Hardening: 820 - 850 °C
Normalizing temperature: 840-880°C
Tempering: 540-680°C
5. Surface requirements: Black, grinding, bright, polish
6. Payment terms: 20% deposit, balance against L/C at sight or T/T.
Usage & Applications of Bearing Steel Bar
Stable elements, low harmful elements, high-purity steel, evenly carbides, ewer surface defects;
using with wide range of plastic processing, heat treatment with stable quality, high and
evenly hardness, good wear resistance, high strength of contact fatigue; excellent cutting and process ability.
Packaging & Delivery of Bearing Steel Bar
Mark: Heat No. will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted.
Standard seaworthy packing or as customer required
Delivery time: Within 30 days after order is confirmed.
Note:
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 electro-slag 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.
- Q: What are the challenges in casting special steel?
- One of the challenges in casting special steel is the high melting point of the material. Special steels often have a higher carbon content or alloying elements, which increases their melting point. This requires the use of specialized furnaces and techniques to reach and maintain the necessary temperature for casting. Additionally, special steels can be prone to defects such as porosity, inclusions, and segregation during the casting process. These defects can negatively impact the mechanical properties and overall quality of the steel, making it difficult to achieve the desired specifications. Therefore, strict control over the casting conditions, including temperature, mold design, and pouring techniques, is crucial to overcome these challenges and produce high-quality special steel castings.
- Q: What are the specific requirements for special steel used in the agricultural sector?
- The specific requirements for special steel used in the agricultural sector typically include high strength, corrosion resistance, and durability. This is necessary to withstand harsh environmental conditions, heavy loads, and exposure to various chemicals and fertilizers. Additionally, the steel should have good weldability and formability to facilitate manufacturing processes.
- Q: Carbon steel and stainless steel and pattern steel and special steel and high carbon steel difference
- Stainless steel with high chromium content and high grade steel is forged together with different steel
- Q: How does special steel perform at high temperatures?
- Special steel performs well at high temperatures due to its unique composition and properties. It exhibits excellent strength, corrosion resistance, and thermal stability, enabling it to retain its mechanical properties even at elevated temperatures. Additionally, special steel has low thermal expansion, ensuring dimensional stability even under extreme heat. These characteristics make it ideal for applications in industries such as aerospace, oil and gas, and power generation, where high temperatures are commonplace.
- Q: How does special steel contribute to the hardness of products?
- The hardness of products is enhanced by special steel due to its distinct composition and manufacturing techniques. Unlike regular steel, special steel is mixed with additional elements like chromium, nickel, and manganese, which bolster its strength and durability. These alloying elements combine with the steel matrix to form solid solutions, resulting in a more rigid and compact structure. The inclusion of these alloying elements in special steel allows for the creation of diverse microstructures, including fine-grained structures and martensitic structures, which significantly increase the steel's hardness. Moreover, special steel often undergoes heat treatment processes such as quenching and tempering, which further refine its microstructure and enhance its hardness. Furthermore, the hardness of special steel can also be influenced by the manufacturing processes employed, such as hot rolling or cold working. These processes deform the steel, align its grain structure, and minimize any defects or impurities, resulting in a more uniform and harder material. The hardness of special steel plays a vital role in various industries where strength, wear resistance, and resistance to deformation are crucial. For instance, in the automotive industry, special steel is utilized in the production of engine parts, gears, and axles, all of which require high hardness to withstand challenging conditions and loads. Similarly, in the construction industry, special steel is used for manufacturing tools, cutting blades, and reinforcement bars, where hardness is essential for longevity and performance. In conclusion, special steel's contribution to product hardness is attributed to its unique alloying elements, manufacturing techniques, and heat treatments. Its ability to form various microstructures and its resistance to deformation make it an excellent material for applications where hardness is vital for performance and durability.
- Q: What are the main applications of special steel in the chemical industry?
- Special steel is extensively used in the chemical industry for various applications. Some of the main applications include the manufacturing of storage tanks, pipelines, and equipment that require resistance to corrosion, high temperatures, and pressure. Special steel also finds use in the production of catalysts, which are vital for many chemical processes. Additionally, it is employed in the construction of reactors, heat exchangers, and other critical components that require exceptional durability and reliability in harsh chemical environments.
- Q: What are the different surface treatments used for special steel?
- There are several different surface treatments that can be used for special steel, depending on the specific requirements and desired properties. Some of the commonly used surface treatments for special steel include: 1. Nitriding: This process involves diffusing nitrogen into the surface of the steel, resulting in a hardened layer. Nitriding improves the surface hardness, wear resistance, and fatigue strength of the steel. 2. Carburizing: Carburizing involves introducing carbon into the surface of the steel, forming a hard and wear-resistant layer. This process enhances the surface hardness and improves the steel's resistance to wear and fatigue. 3. Coating: Coating is a popular surface treatment technique where a thin layer of protective material is applied to the steel surface. Coatings can include various materials like zinc, chrome, or ceramic, which provide corrosion resistance, improved aesthetics, and enhanced durability. 4. Shot peening: Shot peening is a mechanical surface treatment technique that involves bombarding the steel surface with small metallic or ceramic particles. This process induces compressive stresses in the material, enhancing its fatigue strength and resistance to cracking. 5. Electroplating: Electroplating is a process where a thin layer of metal is deposited onto the steel surface using an electrical current. This treatment provides improved corrosion resistance and can also enhance the appearance of the steel. 6. Passivation: Passivation involves treating the steel surface with a chemical solution to remove impurities and create a protective oxide layer. This process improves the corrosion resistance and enhances the surface finish of the steel. 7. Anodizing: Anodizing is a surface treatment commonly used for aluminum but can also be applied to special steel. It involves creating an oxide layer on the steel surface through an electrolytic process. Anodizing improves corrosion resistance, provides an aesthetic finish, and can also be used for coloring the steel. These different surface treatments offer various benefits and are chosen based on the specific application requirements, such as corrosion resistance, wear resistance, hardness, aesthetics, or improved mechanical properties.
- Q: What are the different methods of improving the strength of special steel?
- There are several methods to enhance the strength of special steel, including alloying, heat treatment, and cold working. Alloying involves adding specific elements to the steel composition to enhance its properties, such as chromium for improved corrosion resistance or molybdenum for increased strength. Heat treatment techniques like quenching and tempering can alter the steel's microstructure, making it stronger and more durable. Cold working, which includes processes like rolling or forging, can also increase the strength of special steel by deforming its crystal structure and inducing strain hardening.
- Q: What is the role of research and development in advancing special steel technology?
- The role of research and development in advancing special steel technology is crucial. Through continuous research and development efforts, new and improved manufacturing processes, alloys, and applications for special steel can be discovered and developed. This leads to advancements in the properties and performance of special steel, making it more durable, resistant to wear and corrosion, and capable of meeting the evolving needs of industries such as automotive, aerospace, and energy. Additionally, research and development help in optimizing production techniques, reducing costs, and promoting sustainability in the special steel industry. Overall, research and development play a vital role in pushing the boundaries of special steel technology, enabling innovation and driving progress in various sectors.
- Q: What are the different surface coatings applied to special steel?
- To enhance the performance and protect special steel from various environmental factors, there exist several surface coatings that can be applied. Some common options are as follows: 1. Galvanization: By applying a layer of zinc to the steel surface, galvanization provides exceptional corrosion resistance and prevents rusting. 2. Powder coating: This technique involves electrostatically spraying a dry powder onto the steel surface, which is then cured under heat. The result is a durable, decorative coating that offers excellent resistance to impact, abrasion, and corrosion. 3. Paint coating: Steel can be coated with a variety of paints, including epoxy, acrylic, polyurethane, and enamel. These coatings not only enhance the steel's appearance but also protect against corrosion and weathering. 4. Chrome plating: This process electroplates a thin layer of chromium onto the steel surface, providing excellent resistance to corrosion, wear, and abrasion. It is suitable for harsh environments. 5. Ceramic coating: Ceramic coatings can be applied using thermal spraying or plasma spraying methods. They offer high-temperature resistance, abrasion resistance, and excellent thermal insulation. As a result, they are used in industries such as aerospace and automotive. 6. Anodizing: Though commonly used for aluminum, anodizing can also be applied to certain special steel types. It involves creating an oxide layer on the steel surface through an electrochemical process. Anodizing enhances corrosion resistance and can be used for decorative purposes. These examples represent just a few of the available surface coatings for special steel. The selection of a coating depends on specific application requirements, such as corrosion resistance, wear resistance, temperature resistance, and aesthetic appearance.
REDMETAL,a well-known enterprise specializing in the production and sales of spring steel and bearing steel.
Since the establishment of our company, we have been aimed to provide the customers with qualify and cheap product and the satisfatory service.
1. Manufacturer Overview
| Location | Jiangsu, China |
| Year Established | 1990 |
| Annual Output Value | Above US$ 20 Million |
| Main Markets | Mid East; Eastern Europe; North America |
| Company Certifications |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Shanghai |
| Export Percentage | 20% - 30% |
| No.of Employees in Trade Department | 21-50 People |
| Language Spoken: | English; Chinese |
| b) Factory Information | |
| Factory Size: | Above 100,000 square meters |
| No. of Production Lines | 1 |
| Contract Manufacturing | OEM Service Offered; |
| Product Price Range | High; Average |
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Bearing Steel Bar
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25MT m.t.
- Supply Capability:
- 600000TONS/YEAR 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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