Grade DIN35CrMo4 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Item specifice
Type:
Gear Steel
Shape:
Steel Round Bar
Specifications:
1. Commodity: Alloy Steel Round Bar
2. Technical: Hot rolling
3. Length: Min. 5.8meter, according to requirement.
4.Diameter: 16mm-250mm
Chemical Composition:
Grade | C | Si | Mn | Cr | P | S | Ni | Cu | Mo |
35CrMo4 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
Mechanical Property:
Grade | Tensile Strengthσb (MPa) | Yield Strength | Elongation | Reduction of Area ψ (%) | Impact Akv(J) | Hardness |
σs (MPa) | δ5 (%) | |||||
35CrMo4 | ≥980(100) | ≥785(80) | ≥9 | ≥45 | ≥47 | ≤207HB |
Usage and Applications:
Gear, Sleevesspool,Shaft, Crankshaft, Pin
Packaging & Delivery:
Packaging Detail: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container
Delivery Detail: 15~45 days
Production Flow:
EAF+LF+VD+ Forged+ Heat Treatment
Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
Quality Assurance:
1. We will strictly inspect our production that we sold according to the customer’s request.
2. Our steel reaches international quality standards.
3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.
4. Should the packing found damaged, the buyer has the right to claim to the seller
- Q:What are the challenges in surface treating special steel?
- When it comes to surface treating special steel, a range of challenges can arise due to the unique properties and composition of the material. Some of the main challenges that need to be addressed are as follows: 1. Hardness: Special steels often possess a high level of hardness, which poses difficulties in achieving effective surface treatment. Traditional methods like heat treatment or chemical processes may not be sufficient to modify the surface properties without impacting the core strength. 2. Surface contamination: During the surface treatment process, special steels are vulnerable to contamination. Even the smallest traces of impurities or foreign materials can compromise the integrity of the treated surface. It is crucial to maintain a controlled environment and utilize clean equipment to minimize the risks of contamination. 3. Complex alloy composition: Special steels are typically alloyed with various elements to enhance specific characteristics, such as corrosion resistance or high temperature stability. This complex composition can make it challenging to find suitable surface treatment techniques that can effectively modify the surface properties without negatively affecting the overall performance of the alloy. 4. Adhesion and coating uniformity: Ensuring good adhesion and coating uniformity on special steel surfaces can be problematic. The surface characteristics and microstructure of special steels can make it challenging for coatings or treatments to properly and evenly adhere. Special attention must be paid to surface preparation and the selection of appropriate primers or coatings to ensure optimal adhesion and uniformity. 5. Heat sensitivity: Some special steels may be sensitive to heat during surface treatment processes. Excessive heat exposure can lead to changes in the material's properties, including structural alterations or deformation. It is essential to carefully control temperatures and employ suitable cooling methods to prevent any undesirable effects on the steel during the surface treatment process. 6. Cost: The process of surface treating special steel can be costly due to the specialized equipment, materials, and expertise required. Additionally, the challenges mentioned above can increase the complexity and time needed for surface treatment, resulting in higher costs. It is crucial to take these factors into consideration when planning and budgeting for surface treatment on special steel components.
- Q:What are the magnetic properties of special steel?
- Special steel can exhibit a range of magnetic properties depending on its composition and processing. It can be non-magnetic, weakly magnetic, or strongly magnetic. The specific magnetic properties of special steel can be tailored to meet specific requirements for different applications.
- Q:How does special steel contribute to the aerospace safety?
- Special steel contributes to aerospace safety in several ways. Firstly, special steel is used in the construction of aircraft components such as landing gear, engine parts, and structural supports. These components need to withstand extreme stress, high temperatures, and corrosive environments, and special steel provides the necessary strength, durability, and resistance to ensure the safety and reliability of the aircraft. Secondly, special steel is utilized in the manufacturing of aerospace tools and equipment. These tools are essential for maintenance, repairs, and inspections of aircraft systems. The high strength and toughness of special steel ensure that these tools can withstand heavy use, enabling efficient and accurate maintenance procedures, ultimately contributing to the overall safety of aerospace operations. Furthermore, special steel is also used in the production of safety-critical fasteners and connectors in aerospace applications. These fasteners play a crucial role in holding aircraft components together, and their reliability is paramount for the safe operation of the aircraft. Special steel's excellent mechanical properties, including high tensile strength and resistance to fatigue, ensure the integrity and security of these fasteners, reducing the risk of component failure and enhancing aerospace safety. Overall, the use of special steel in aerospace applications significantly contributes to safety by providing the necessary strength, durability, and reliability required in critical aircraft components, tools, and fasteners.
- Q:What are the different types of wear-resistant steel?
- There are several types of wear-resistant steel, including AR400, AR450, AR500, and Hardox. These steels are specifically designed to withstand abrasion, impact, and wear in various applications such as mining, construction, and manufacturing.
- Q:What is the importance of heat treatment in special steel?
- Heat treatment is of utmost importance in special steel because it significantly enhances its mechanical properties and overall performance. Special steel, also known as alloy steel, is specifically designed to possess specific characteristics such as high strength, hardness, wear resistance, and toughness, making it suitable for demanding applications in industries like automotive, aerospace, and tooling. The heat treatment process involves controlled heating and cooling of the steel to alter its microstructure, which in turn affects its properties. There are several heat treatment techniques employed, including annealing, tempering, quenching, and hardening, each serving a specific purpose. One key importance of heat treatment in special steel is the ability to increase its hardness. Through techniques like quenching and hardening, the steel can be transformed into a hardened state, where it becomes much stronger and more resistant to abrasion and wear. This is crucial for applications that involve heavy loads, impact, and abrasive environments. Additionally, heat treatment can also improve the toughness and ductility of special steel. By carefully controlling the cooling rate during the heat treatment process, the steel's microstructure can be adjusted to achieve a fine-grained structure, enhancing its toughness and ability to withstand sudden impacts or shocks. This is particularly important in applications where the material needs to absorb energy and resist fractures, such as in structural components or tools. Furthermore, heat treatment can also improve the machinability and dimensional stability of special steel. By subjecting the steel to annealing or tempering processes, internal stresses and residual strains can be relieved, resulting in a more stable and easier-to-machine material. This is crucial in industries where precision and dimensional accuracy are paramount. In conclusion, the importance of heat treatment in special steel cannot be overstated. It is a vital process that allows for the optimization of the steel's mechanical properties, ensuring it meets the specific requirements of demanding applications. By carefully manipulating the microstructure, heat treatment enhances the steel's hardness, toughness, and machinability, making it a versatile and reliable material in various industries.
- Q:How does special steel compare to other materials?
- Special steel, also known as alloy steel, exhibits exceptional strength, durability, and resistance to wear and corrosion. When compared to other materials, such as regular steel, aluminum, and plastic, special steel stands out for its superior mechanical properties. Firstly, special steel offers higher tensile strength and hardness, making it ideal for applications requiring heavy-duty performance. Its resistance to deformation and ability to withstand high pressures and temperatures make it suitable for use in industries like aerospace, automotive, and construction. Moreover, special steel possesses excellent wear resistance, making it suitable for applications subject to friction, abrasion, and impact. This property minimizes the need for frequent repairs or replacements, resulting in cost savings and improved efficiency. In terms of corrosion resistance, special steel surpasses regular steel, which is prone to rusting when exposed to moisture or aggressive environments. Its composition includes elements such as chromium, nickel, and molybdenum, which form a protective layer on the surface, preventing corrosion and extending the material's lifespan. Compared to materials like aluminum and plastic, special steel has the advantage of being more robust and less prone to deformation or breakage. While aluminum is lightweight, it lacks the strength and hardness of special steel, limiting its suitability for heavy-duty applications. Plastic, on the other hand, offers lower strength and durability compared to special steel, making it less suitable for demanding tasks. Furthermore, special steel can be easily machined, fabricated, and welded, allowing for versatile applications across various industries. Its flexibility in terms of shaping and forming makes it a preferred choice in the manufacturing of components and structures. Overall, special steel outperforms other materials in terms of strength, durability, wear resistance, corrosion resistance, and versatility. Its exceptional properties make it an essential material in demanding industries where reliability and performance are paramount.
- Q:What are the different methods of preventing hydrogen embrittlement in special steel?
- There are several methods that can be employed to prevent hydrogen embrittlement in special steel. 1. Proper material selection: Choosing the right type of steel with a lower susceptibility to hydrogen embrittlement can be an effective preventive measure. Steels with high strength and hardness are generally more susceptible to embrittlement, so opting for steels with lower alloy content or different composition can be beneficial. 2. Controlled heat treatment: Proper heat treatment processes can help reduce the risk of hydrogen embrittlement. Tempering and annealing at specific temperatures can relieve internal stresses and minimize the impact of hydrogen absorption. 3. Hydrogen mitigation techniques: Various techniques can be utilized to prevent or reduce the amount of hydrogen in the steel. These include preheating the steel before exposure to hydrogen, utilizing desorption methods such as vacuum annealing to remove trapped hydrogen, and employing hydrogen scavenger coatings or inhibitors that capture or neutralize the hydrogen. 4. Stress reduction: High levels of stress can increase the likelihood of hydrogen embrittlement. Implementing stress relief techniques such as shot peening or stress-relieving heat treatments can help reduce the potential for embrittlement. 5. Proper handling and storage: Hydrogen embrittlement can also occur during the manufacturing, handling, or storage stages. It is essential to ensure that the steel is protected from exposure to hydrogen-rich environments, such as during cleaning or pickling processes. Proper packaging and storage techniques, including the use of dry environments or protective coatings, can also help prevent hydrogen absorption. 6. Maintenance and inspection: Regular inspection and maintenance of the steel components can help identify any signs of hydrogen embrittlement at an early stage. This allows for timely repairs or replacements to prevent catastrophic failures. It is important to note that the specific method or combination of methods employed to prevent hydrogen embrittlement may vary depending on the specific application, the type of steel, and the environmental conditions it will be exposed to. Therefore, it is crucial to consult with experts and adhere to industry standards and guidelines to ensure effective prevention of hydrogen embrittlement in special steel.
- Q:What are the advantages of using special steel in various industries?
- There are several advantages of using special steel in various industries. Firstly, special steel possesses excellent strength and durability, making it suitable for applications that require high mechanical performance and resistance to wear and tear. Secondly, special steel offers superior corrosion resistance, which is crucial in industries exposed to harsh environments or corrosive substances. Additionally, special steel can be easily manipulated and molded into different shapes, enabling manufacturers to create complex and customized components. Lastly, special steel can withstand extreme temperatures, making it ideal for industries such as aerospace and automotive that operate in demanding conditions. Overall, the advantages of special steel contribute to improved product performance, longer lifespan, and increased operational efficiency in various industries.
- Q:How does special steel contribute to the oil and gas industry?
- Special steel plays a vital role in the oil and gas industry by providing the necessary strength, durability, and corrosion resistance required for various applications. It is used in the construction of pipelines, drilling equipment, wellhead components, and offshore platforms. The unique properties of special steel enable it to withstand high pressures, extreme temperatures, and harsh environments, ensuring the safety and efficiency of oil and gas operations.
- Q:How does special steel contribute to the construction aftermarket industry?
- Special steel contributes to the construction aftermarket industry by offering enhanced strength, durability, and corrosion resistance. It enables the construction of high-rise buildings, bridges, and other infrastructure projects that require superior performance and safety. Additionally, special steel allows for the use of lighter and more efficient designs, reducing costs and environmental impact. Overall, it plays a crucial role in pushing the boundaries of construction capabilities and meeting the growing demands of the industry.
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Grade DIN35CrMo4 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 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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