42CrMo4 Alloy Steel Round Bars Hot Rolled Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
42CrMo4 Alloy Steel Round Bars Hot Rolled Bars
Product Description:
1. Sizes: Diameter: 16mm-300mm; Length: 6m, 9m, 12m
2. Grade: 42CrMo, 4140,42CrMov4
3. Invoicing on theoretical weight or actual weight as customer’s request
4. Shape: Round bar, solid bar of steel with circular section
5. Technique: Hot rolled, forged, cold rolled
Specification:
Material | 42CrMo4 | Round bar | Dia(mm) | 16-600 |
Process | EAF + LF + VD + Forged + Heat Treatment (optional) | Length (mm) | Max 12000 | |
Heat treatment | Normalized / Annealed / Quenched / tempered | Flat bar | Thickness(mm) | 8-500 |
Delivery condition | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) | Width(mm) | 70-200 | |
Test | Ultrasonic test according to SEP 1921-84 D/d | Length (mm) | Max 12000 |
Chemical Composition:
C | Si | Mn | Cr | Ni | Cu |
0.38~0.45 | 0.17~0.37 | 0.50~0.80 | 0.9-1.2 | ≤0.030 | ≤0.030 |
Packing and Delivery:
Packing in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: Approx.45 days
Usage and Applications:
1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some especial material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Product Show:
- Q: What are the different forming processes for special steel?
- There are several different forming processes for special steel, including forging, casting, extrusion, and rolling.
- Q: What are the main factors affecting the tensile strength of special steel?
- Several factors affect the tensile strength of special steel. Firstly, the chemical composition of the steel plays a vital role in determining its tensile strength. Elements like carbon, manganese, silicon, chromium, nickel, and molybdenum can greatly enhance the steel's ability to resist deformation under tensile loads by forming solid solutions, carbides, and intermetallic compounds. Secondly, the heat treatment processes applied to special steel have a significant impact on its tensile strength. Quenching and tempering, annealing, and precipitation hardening can alter the microstructure of the steel, resulting in specific phases and grain structures that enhance its tensile strength. Moreover, the mechanical working or deformation processes that the steel undergoes can also affect its tensile strength. Techniques such as rolling, forging, or extrusion can refine the grain structure and induce dislocations within the material, leading to an increase in tensile strength. The presence of impurities and defects within the steel can negatively impact its tensile strength. Inclusions, voids, or cracks act as stress concentration points, reducing the overall strength of the material. Therefore, it is crucial to implement proper quality control measures during the manufacturing process to minimize these defects and ensure high tensile strength. Furthermore, the temperature at which the steel is exposed can influence its tensile strength. Special steel typically experiences a decrease in tensile strength as the temperature increases due to thermal expansion and the loss of material strength. Therefore, it is important to consider the temperature range in which the steel will be used and select an appropriate grade with the desired tensile strength. In conclusion, the tensile strength of special steel is affected by various factors, including chemical composition, heat treatment, mechanical working, impurities, defects, and temperature. By considering and optimizing these factors during the manufacturing process, special steel with exceptional tensile strength properties can be achieved.
- Q: How does special steel contribute to the manufacturing of oil and gas equipment?
- Special steel plays a vital role in the manufacturing of oil and gas equipment by offering exceptional strength, corrosion resistance, and high-temperature stability. This type of steel is specifically designed to withstand the harsh and challenging conditions encountered in the oil and gas industry, such as extreme temperatures, pressure, and corrosive environments. It is used to construct various components of equipment like pipes, valves, fittings, drilling tools, and offshore platforms. Special steel's superior properties ensure the reliability, durability, and safety of oil and gas equipment, enabling efficient operations in this critical sector.
- Q: How does special steel perform in cryogenic wear resistance?
- Special steel is known for its exceptional performance in cryogenic wear resistance. When exposed to extremely low temperatures, special steel maintains its strength, hardness, and durability, making it highly resistant to wear and friction. This is particularly important in applications that involve cryogenic environments, such as in the aerospace industry or in the production of superconductors. The unique composition and processing of special steel enable it to withstand the challenges posed by cryogenic conditions. It exhibits excellent toughness, ensuring that it does not become brittle or prone to cracking at low temperatures. Additionally, the steel's microstructure remains stable, preventing any significant changes in its mechanical properties when subjected to extreme cold. Furthermore, special steel is often treated with various surface coatings or heat treatments to enhance its wear resistance even further. These treatments create a protective layer or modify the steel's microstructure, reducing the likelihood of wear and extending its service life in cryogenic environments. In summary, special steel excels in cryogenic wear resistance due to its ability to maintain strength, hardness, and durability at extremely low temperatures. Its exceptional toughness, stable microstructure, and potential for surface treatments make it a preferred choice for applications that require reliable performance in cryogenic conditions.
- Q: How does special steel perform in cryogenic environments?
- The performance of special steel in cryogenic environments is exceptional. Cryogenic temperatures, which are temperatures below -150°C (-238°F), require materials that can withstand and excel in such extreme conditions. Special steel is specifically designed to possess these qualities. One of the key characteristics of special steel is its ability to maintain its strength and toughness even in low temperatures. Unlike other materials that become brittle and prone to fractures in cryogenic environments, special steel retains its mechanical properties, ensuring the structural integrity and reliability of equipment or structures. This is particularly important in industries where safety is of utmost importance, such as aerospace and nuclear. Furthermore, special steel exhibits excellent resistance to corrosion and oxidation, even at cryogenic temperatures. This resistance is crucial as cryogenic environments often involve the presence of gases, liquids, or chemicals that can accelerate corrosion. By resisting corrosion, special steel ensures its longevity and minimizes the risk of material degradation, thereby enhancing the overall performance and lifespan of equipment or structures. Apart from its mechanical and corrosion-resistant properties, special steel also possesses good thermal conductivity. This property enables efficient heat transfer, which is critical in cryogenic environments where temperature control and management are vital. Special steel's ability to efficiently conduct heat ensures that equipment and structures remain at the desired low temperatures without any significant thermal variations. Moreover, the suitability of special steel for cryogenic environments is evident in its wide range of applications. It is commonly used in cryogenic storage tanks for liquefied gases like liquid oxygen, nitrogen, and argon. It is also utilized in the construction of cryogenic pipelines, valves, and other components, where its exceptional performance guarantees the safe transport and containment of cryogenic fluids. In conclusion, special steel performs exceptionally well in cryogenic environments due to its retained strength and toughness, resistance to corrosion, good thermal conductivity, and wide range of applications. Its ability to withstand extreme cold temperatures makes it a reliable and preferred choice for various industries that require dependable performance in cryogenic conditions.
- Q: What are the main characteristics of alloy steel forgings?
- Alloy steel forgings possess several key characteristics that make them highly desirable in various industries. Firstly, alloy steel forgings are known for their exceptional strength and durability. The inclusion of different alloying elements, such as chromium, nickel, molybdenum, and vanadium, enhances the steel's mechanical properties, making it resistant to wear, fatigue, and corrosion. Another important characteristic of alloy steel forgings is their versatility. These forgings can be customized to meet specific requirements, whether it be in terms of shape, size, or performance. This adaptability allows for the production of complex and intricate components that are often used in critical applications, such as aerospace, automotive, and oil and gas industries. Additionally, alloy steel forgings exhibit excellent heat resistance and can withstand extreme temperature fluctuations without losing their structural integrity. This property is particularly beneficial in applications where components are exposed to high temperatures or rapid temperature changes, such as gas turbines, boilers, and heat exchangers. Furthermore, alloy steel forgings offer superior machinability and weldability, making them easier to work with during the manufacturing process. This characteristic allows for precise shaping, forming, and machining of the forgings, enabling manufacturers to achieve intricate designs and tight tolerances. Lastly, alloy steel forgings are known for their cost-effectiveness. Despite their exceptional properties, alloy steel forgings can be produced in large quantities, resulting in economies of scale. This makes them a cost-efficient choice for various industries looking to balance performance, durability, and affordability. In summary, the main characteristics of alloy steel forgings are their exceptional strength, durability, versatility, heat resistance, machinability, weldability, and cost-effectiveness. These qualities make alloy steel forgings a preferred choice for applications requiring high-performance components that can withstand challenging conditions.
- Q: What are the different types of free-cutting steel?
- There are several different types of free-cutting steel, including leaded steels, sulfurized steels, and phosphorized steels. These types of steels are specifically designed to improve machinability and enhance the cutting performance during manufacturing processes.
- Q: Is the steel column of the steel structure HM a special steel?
- It should be in capitals: HM, HW, wide flange, and HN narrow flange. Steel is Q235, Q345 are low carbon steel hot rolled.
- Q: What are the different methods for nitriding special steel?
- There are several methods for nitriding special steel, including gas nitriding, salt bath nitriding, plasma nitriding, and ion nitriding.
- Q: How does special steel contribute to the manufacturing of springs for automotive applications?
- Special steel is crucial for the manufacturing of springs in automotive applications because it offers high strength, durability, and excellent fatigue resistance. It allows springs to withstand heavy loads, vibrations, and extreme temperatures while maintaining their shape and performance over time. Special steel also provides flexibility in design, allowing for the production of springs with specific characteristics such as improved stability, reduced weight, and enhanced energy absorption. Overall, the use of special steel in spring manufacturing ensures reliable and efficient performance in automotive applications.
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42CrMo4 Alloy Steel Round Bars Hot Rolled Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 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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