42CrMo Hot Rolled Alloy Round Bar 95-280mm
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 2000 m.t./month
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Item specifice
Type:
Carbon Steel,Alloy Steel,Spring Steel,Bearing Steel,Gear Steel
Shape:
Steel Round Bar
Technique:
Hot Rolled
Surface Treatment:
Grinde(修磨)
Certification:
ISO
Length:
4-12 meter
Outer Diameter:
95-280 mm
Quick Information
· Place of Origin:China
· Application :Structural Steel Bar
· Dimensions :95mm to 280mm
· Steel Grade :42CrMo
· Technique :Hot Rolled
· Type :Alloy Steel Bar
Product
Annual output of 1.1 million tons of steel including 800 thousand tons of continuous casting round bloom and 200 thousand tons of heavy ingot, and annual output of 750 thousand tons of hot rolled products.
Products, mainly including: railway wheel and tyre steel, bearing steel, spring steel, gear steel, tool and die steel, alloy tube billet, high quality ring steel, high grade cold heading steel, non-quenched and tempered steel, anchor chain steel, roller steel, steel for heavy castings and forgings, alloy structural steel and other series，are widely used in railway, energy, autos, machinery, construction, petroleum, chemical industry, metallurgy, aerospace, marine and other fields.
Chemical composition
C ：0.38～0.45%
Si：0.17～0.37%
Mn：0.50～0.80%
S ：≤0.035%
P ：≤0.035%
Cr：0.90～1.20%
Ni：≤0.030%
Cu：≤0.030%
Mo：0.15～0.25%
Features of this kind of material
1) High fatigue strength and impact resistance after tempering
2) Good low-temperature impact toughness
3) No obvious temper brittleness
Size: Diameter 95mm-280mm
Length: 4m-12m
Delievery condition:
1.Both end of each bar must be cut.
2.Ladle furnaced and vacuum de-gassed
3.Show Heat No. on each bar
4.Surface condition: The surface of the bar shall be free cracks, scar and wrinkles at affect the use of the billets.
5.The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.
- Q:What are the different special steel products available in the market?
- In the market, one can find a wide range of special steel products that are specifically designed to meet various industrial needs. Some commonly used special steel products include: 1. Stainless Steel: This particular steel alloy is highly resistant to corrosion due to its minimum chromium content of 10.5%. It finds extensive use in applications that demand exceptional corrosion resistance, such as kitchen utensils, medical instruments, and chemical processing equipment. 2. Tool Steel: Tool steel is a type of carbon and alloy steel that is exclusively manufactured for tool production. It is renowned for its high hardness, resistance to abrasion, and ability to maintain sharp edges. Tool steel is widely employed in the fabrication of cutting tools, dies, and molds. 3. Alloy Steel: Alloy steel is a type of steel that has been blended with other elements like manganese, silicon, nickel, or chromium to enhance its mechanical properties. It offers superior strength, toughness, and wear resistance compared to carbon steel. Alloy steel is used in various applications, including automotive components, construction equipment, and machinery parts. 4. High-Speed Steel: High-speed steel is a variant of tool steel that exhibits the ability to cut at high speeds without compromising its hardness or its ability to retain sharp edges. It is commonly utilized in the production of drills, milling cutters, and saw blades. 5. Spring Steel: Spring steel is a low-alloy, medium or high carbon steel that possesses remarkable shape retention and elasticity even under high stress or repeated loadings. It finds extensive use in the manufacturing of springs, suspension systems, and shock absorbers. 6. Electrical Steel: Electrical steel, also known as silicon steel, is an exceptional steel alloy that demonstrates low electrical losses and high magnetic permeability. It is employed in the fabrication of electrical transformers, motors, and generators. 7. Heat-Resistant Steel: Heat-resistant steel is specifically engineered to withstand high temperatures without compromising its mechanical properties. It is commonly utilized in applications such as furnaces, heat exchangers, and gas turbines. These examples merely scratch the surface of the wide array of special steel products available in the market. The selection of a particular steel product depends on the specific requirements of the application, including factors like corrosion resistance, strength, hardness, and heat resistance.
- Q:What are the different methods of surface polishing for special steel?
- Some of the different methods of surface polishing for special steel include mechanical polishing, chemical polishing, electropolishing, and abrasive blasting. Mechanical polishing involves using abrasive materials like sandpaper or polishing wheels to remove imperfections and create a smoother surface. Chemical polishing uses chemical solutions to dissolve a thin layer of the steel's surface, resulting in a polished finish. Electropolishing is an electrochemical process that removes surface material through the application of an electric current, resulting in a smooth and shiny surface. Abrasive blasting, also known as sandblasting, involves propelling abrasive particles at high speeds to remove rust, scale, or other surface contaminants, leaving a polished surface.
- Q:Can special steel be used for nuclear power plant components?
- Yes, special steel can be used for nuclear power plant components. Special steel alloys, such as stainless steel or low alloy steel, are commonly used in the construction of various components in nuclear power plants due to their high strength, corrosion resistance, and ability to withstand high temperatures and radiation exposure. These properties are crucial for ensuring the safety and longevity of nuclear power plants.
- Q:How does special steel perform in oil and gas applications?
- Special steel is highly desirable and widely used in oil and gas applications due to its exceptional performance and superior properties. Special steel exhibits excellent resistance to corrosion, which is crucial in environments where oil and gas are present. This resistance to corrosion helps prevent equipment failure and ensures the longevity and reliability of the components. Moreover, special steel possesses high strength and durability, making it suitable for withstanding extreme conditions, such as high pressure and temperature. This strength allows the steel to withstand the demanding and harsh environments that oil and gas applications often present. Additionally, special steel can retain its mechanical properties even at elevated temperatures, providing stability and reliability in these challenging conditions. Another significant advantage of special steel is its excellent weldability. This property allows for easy fabrication and assembly of components, reducing production time and costs. It also ensures the integrity of the structures and equipment used in oil and gas applications. Furthermore, special steel offers exceptional resistance to fatigue and wear, which are common concerns in oil and gas operations. The ability of special steel to withstand cyclic loading and abrasive conditions ensures the longevity and reliability of the components, reducing maintenance and replacement costs. Overall, special steel performs exceptionally well in oil and gas applications due to its corrosion resistance, high strength, durability, weldability, and resistance to fatigue and wear. Its superior properties make it a preferred choice for critical components, ensuring the efficiency, safety, and reliability of oil and gas operations.
- Q:What are the different methods of surface hardening for special steel?
- There are several methods of surface hardening that can be used for special steel. These methods include: 1. Carburizing: This process involves heating the steel in a carbon-rich environment, such as a gas or liquid, to allow carbon atoms to diffuse into the surface of the steel. This increases the surface hardness and wear resistance of the steel. 2. Nitriding: Nitriding is a process where the steel is heated in a nitrogen-rich environment, causing nitrogen atoms to diffuse into the surface of the steel. This creates a hard, wear-resistant surface layer. 3. Induction hardening: In this method, an alternating current is passed through a coil to create a magnetic field, which induces electrical currents in the steel. The resistance to these currents generates heat, causing the surface of the steel to reach high temperatures and undergo rapid quenching, resulting in increased hardness. 4. Flame hardening: This process involves heating the surface of the steel using a flame or an oxy-fuel torch and then quenching it in water or oil. The rapid cooling from high temperatures helps to achieve surface hardening. 5. Laser hardening: Laser beams are used to heat a specific area of the steel surface, quickly raising the temperature and then rapidly cooling it with a coolant. This localized heating and cooling process increases the hardness of the treated area. 6. Plasma nitriding: In this method, the steel is placed in a low-pressure plasma chamber, where nitrogen ions bombard the surface of the steel, causing nitrogen to diffuse into the surface and form a hardened layer. Each of these methods has its advantages and is suitable for different applications and types of special steel. The choice of surface hardening method depends on factors such as the desired hardness, dimensional limitations, and the specific properties required for the application.
- Q:How does special steel contribute to the packaging aftermarket industry?
- The packaging aftermarket industry greatly benefits from the use of special steel, which provides various advantages that enhance the efficiency and quality of packaging processes. Firstly, special steel is renowned for its exceptional strength and durability, making it ideal for the manufacturing of packaging machinery and equipment. This durability ensures that the machinery can withstand the demanding requirements of the industry, resulting in improved reliability and less downtime. Additionally, special steel boasts excellent resistance to corrosion, making it highly suitable for packaging applications that involve exposure to moisture, chemicals, or extreme temperatures. This corrosion resistance extends the lifespan of packaging equipment and prevents degradation, ultimately reducing maintenance costs and enhancing the overall efficiency of the packaging aftermarket industry. Moreover, special steel can be customized to meet specific needs, allowing for the production of tailored packaging solutions. This flexibility and versatility enable manufacturers to create innovative designs that enhance product protection, optimize space utilization, and improve transportation logistics. For example, special steel can be used to manufacture lightweight yet strong packaging materials, reducing shipping costs and minimizing the environmental impact associated with packaging waste. Furthermore, special steel possesses excellent machinability and weldability, making it easy to fabricate intricate packaging components with high precision. This capability enables manufacturers to produce packaging solutions that perfectly fit specific product dimensions, ensuring optimal protection during transit. In conclusion, special steel plays a vital role in the packaging aftermarket industry by offering strength, durability, corrosion resistance, customization options, and excellent machinability. These qualities contribute to the overall efficiency, reliability, and quality of packaging processes, benefiting both manufacturers and consumers.
- Q:How is duplex stainless steel used in the oil and gas industry?
- Duplex stainless steel is widely used in the oil and gas industry due to its exceptional corrosion resistance, high strength, and good weldability. It is commonly used in various applications including offshore platforms, subsea pipelines, oil and gas refineries, and chemical processing plants. The duplex stainless steel's ability to withstand harsh environments, resist corrosion from corrosive fluids, and perform under high pressure and temperature conditions makes it a preferred material for critical components and equipment in the oil and gas sector.
- Q:How does special steel contribute to the construction sector?
- Special steel plays a crucial role in the construction sector by offering a wide range of benefits that contribute to the overall quality, durability, and safety of structures. Firstly, special steel possesses exceptional strength and toughness, making it an ideal material for constructing high-rise buildings, bridges, and other infrastructure projects. Its high tensile strength allows for the creation of lighter and more slender structures, reducing material costs and enabling architects to design innovative and aesthetically pleasing buildings. Moreover, special steel is highly resistant to corrosion, which is particularly important in construction projects located in harsh environments, such as coastal areas or industrial zones. This resistance ensures that structures built with special steel have a longer lifespan and require less maintenance, resulting in significant cost savings over time. Additionally, its resistance to fire and extreme temperatures makes it an essential material for fire-resistant structures and critical components in buildings, ensuring the safety of occupants. Special steel also offers excellent ductility and weldability, allowing for seamless integration with other construction materials and facilitating efficient assembly processes. Its versatility enables it to be used in various structural elements, such as beams, columns, and reinforcement bars, providing stability and structural integrity to buildings, as well as improving seismic performance. Furthermore, the use of special steel in construction aligns with sustainability goals. It is a recyclable material that can be reused without compromising its properties, reducing the environmental impact of the construction sector. Furthermore, its lighter weight compared to traditional materials minimizes the carbon footprint associated with transportation and installation. In summary, special steel contributes significantly to the construction sector by providing strength, durability, fire resistance, corrosion resistance, and versatility. Its use enables the construction of safer, more cost-effective, and environmentally-friendly structures, thereby enhancing the overall quality and sustainability of the built environment.
- Q:How does special steel ensure dimensional stability?
- Dimensional stability is guaranteed by special steel through a variety of mechanisms. To begin with, special steel possesses exceptional strength and toughness, enabling it to withstand external forces and prevent deformation. This characteristic is of utmost importance in applications where precise dimensional accuracy is critical, such as in precision machinery or tooling. Moreover, special steel is subjected to specific heat treatment processes to enhance its dimensional stability. For instance, the common practices of quenching and tempering are employed to augment the steel's hardness and resistance to wear, while simultaneously minimizing the risk of warping or distortion. These treatments also aid in preserving the steel's shape and size over time, even in the face of fluctuating temperature conditions. Additionally, special steel often incorporates alloying elements like chromium, nickel, or molybdenum, which contribute to its corrosion resistance. By preventing oxidation and rusting, these alloying elements assist in maintaining the steel's dimensional stability by averting any deterioration or loss of material due to corrosion. Furthermore, the manufacturing process of special steel adheres to rigorous quality control measures to ensure consistent dimensional accuracy. This encompasses meticulous control of the composition, refining techniques, and casting or forging processes. By maintaining precise tolerances during production, special steel can achieve the requisite dimensional stability demanded by specific applications. In conclusion, special steel secures dimensional stability through its exceptional strength, heat treatment processes, inclusion of alloying elements for corrosion resistance, and stringent quality control during manufacturing. These factors collectively contribute to the preservation of the steel's shape, size, and precision over time.
- Q:What are the common challenges in heat treating special steel?
- Some common challenges in heat treating special steel include achieving the desired hardness and strength while minimizing distortion and cracking, ensuring uniform heat distribution throughout the steel, managing the transformation of phases during heating and cooling, controlling the formation of detrimental microstructures, and maintaining tight dimensional tolerances. Additionally, special steels may have specific alloying elements or compositions that require precise heat treatment processes to maximize their desired properties.
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42CrMo Hot Rolled Alloy Round Bar 95-280mm
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 2000 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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