Hot Rolled 5140 Steel, 5140 Steel Structure, 5140 Steel Plate

Hot Rolled 5140 Steel, 5140 Steel Structure, 5140 Steel Plate System 1

Hot Rolled 5140 Steel, 5140 Steel Structure, 5140 Steel Plate

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Hot Rolled 5140 Steel, 5140 Steel Structure, 5140 Steel Plate

Equivalent grades

GB	DIN	AISI	JIS
42CrMo	1.7225	4140	SCM440

Chemical Composition

C	Si	Mn	Cr	Mo	P	S
0.38-0.43	0.40max	0.60-0.90	0.90-1.20	0.15-0.30	≤0.035	≤0.035

Available size

Round steel bar 60-800mm
Flat steel bar 25-400mm*200-800mm

Surface condition

Black surface/ Grinded/ Machined

Black surface/ Grinded/ Machined

Hardness

Annealed HBS 217 max

Annealed HBS 217 max

Characteristics

4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.

4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.

Applications

4140 Alloy Steel/SAE 4140 Steel Price is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .

4140 Alloy Steel/SAE 4140 Steel Price is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .

Heat treatment

Forging		Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc.
Annealing		Heat to 830°C-850°C.Cool in furnace.
Normalising		Heat to 870°C-900°C.Cool in still air.
Stress Relieving		Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air.
Hardening		Heat to 830°C-880°C. Quench in oil or polymer.
Tempering		Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided.

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Hot Rolled 5140 Steel, 5140 Steel Structure, 5140 Steel Plate

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Q: What are the applications of special steel in the aerospace sector?: Special steel has numerous applications in the aerospace sector due to its exceptional properties and capabilities. Firstly, special steel is used in the manufacturing of aircraft engines. The high strength and temperature resistance of special steel make it ideal for components such as turbine blades and discs, which are subjected to extreme heat and stress during operation. Special steel also offers excellent corrosion resistance, ensuring the longevity and reliability of critical engine parts. Another application of special steel in the aerospace sector is in the construction of aircraft structures. Special steel alloys are utilized to fabricate landing gear, wing components, and other structural elements. The high strength-to-weight ratio of special steel enables the production of lightweight yet robust structures, contributing to fuel efficiency and overall performance. Special steel is also employed in the production of aerospace fasteners. These include bolts, nuts, and screws that hold various aircraft components together. The exceptional mechanical properties and resistance to fatigue and vibration of special steel make it an ideal material for fasteners, ensuring the integrity and safety of aircraft assemblies. Furthermore, special steel finds application in aerospace tooling and equipment. Tools used in the manufacturing process, such as cutting tools and molds, are often made from special steel. Its high hardness and wear resistance enable efficient and precise machining of aerospace components. Additionally, special steel is utilized in the production of specialized equipment, such as test rigs, calibration devices, and ground support equipment, which are crucial for aerospace operations and maintenance. In summary, special steel plays a vital role in the aerospace sector. Its use in aircraft engines, structures, fasteners, and tooling contributes to the overall safety, performance, and reliability of aerospace systems. The unique properties of special steel make it an indispensable material for the demanding and critical applications within the aerospace industry.

Q: How does special steel contribute to reducing material waste?: Special steel contributes to reducing material waste through its superior properties and durability. Unlike traditional steel, special steel is designed to have enhanced strength, corrosion resistance, and wear resistance. These properties allow for the production of thinner and lighter components without compromising their functionality, leading to reduced material consumption. Additionally, the longevity and resistance to wear of special steel products result in longer service life, minimizing the need for frequent replacements and further reducing material waste.

Q: What grade of iron powder should be used for processing special steel? Are there any other elements on the request? How much are they?: The main special steel carbon structural steel, carbon tool steel, carbon spring steel, alloy spring steel, alloy structural steel, bearing steel, alloy tool steel, alloy tool steel, high-speed tool steel, stainless steel, heat-resistant steel and high-temperature alloy, precision alloy, gold and other electric heating.

Q: What are the different heat treatment techniques used for special steel?: There are several heat treatment techniques used for special steel, including annealing, normalizing, quenching, tempering, and case hardening. Each technique serves a specific purpose in altering the properties of the steel, such as improving hardness, strength, toughness, or ductility. Annealing involves heating the steel to a specific temperature and then slowly cooling it to relieve internal stresses and increase ductility. Normalizing is similar to annealing but involves air cooling instead of slow cooling. Quenching involves rapid cooling of the steel to increase hardness, while tempering is a subsequent heating process to reduce brittleness and enhance toughness. Case hardening involves heating the steel in the presence of a carbon-rich atmosphere to increase surface hardness while maintaining a tough core.

Q: What is the role of boron in special steel alloys?: Special steel alloys rely heavily on the presence of boron as it plays a crucial role in enhancing their mechanical properties and overall performance. One of the key functions of boron is to act as a hardenability agent, thereby improving the steel's hardness and strength. This is achieved by forming boride particles that act as strengthening agents within the microstructure. Moreover, boron aids in refining the grain structure of steel, resulting in improved toughness and crack resistance. It promotes the formation of fine-grained microstructures, which consequently enhance the steel's ability to withstand high temperatures, pressure, and wear. Additionally, boron assists in the solidification process of steel, reducing the risk of hot cracking during casting or welding. It accomplishes this by lowering the steel's melting point, allowing for better fluidity and improved flowability during manufacturing processes. Furthermore, the inclusion of boron in steel alloys also enhances their machinability, making them easier to work with and reducing tool wear. In conclusion, the addition of boron to special steel alloys significantly contributes to their strength, hardness, toughness, and resistance to various forms of degradation. Its role is crucial in optimizing the performance and durability of these alloys in demanding applications such as automotive components, aerospace structures, and industrial machinery.

Q: Can special steel be used in power generation applications?: Indeed, power generation applications can certainly benefit from the utilization of special steel. When we mention special steel, we are referring to a diverse range of steel types that have been specifically engineered to possess superior attributes like high strength, durability, heat resistance, corrosion resistance, and wear resistance. These exceptional properties make special steel an ideal choice for power generation applications where the materials must endure elevated temperatures, pressures, and mechanical strains. Within the realm of power generation, various components and equipment can make use of special steel. Examples include turbine blades, boiler tubes, heat exchangers, steam pipes, and high-pressure valves. To illustrate, thermal power plants, which rely on fossil fuels for electricity generation, often employ special steel in boiler tubes and heat exchangers to withstand the demanding conditions of steam generation, characterized by high temperatures and pressures. Moreover, in the context of nuclear power plants, special steel finds application in critical components such as reactor vessels, steam generators, and fuel cladding. This is due to its exceptional strength, resistance to radiation damage, and resistance to corrosion. Furthermore, the use of special steel extends to renewable energy power generation applications. For instance, in wind turbines, special steel is employed in the construction of turbine towers, rotor blades, and gearboxes. Its purpose is to withstand the challenges of high wind speeds, vibrations, and fatigue. In summary, special steel occupies a vital role in power generation applications, thanks to its extraordinary properties. By ensuring the reliability, efficiency, and longevity of the equipment and components employed in diverse power generation systems, special steel contributes significantly to the field.

Q: What are the different welding methods used for special steel?: There exists a range of welding methods that can be utilized for special steel, contingent upon the specific needs of the project. Some of the commonly employed welding methods for special steel comprise the following: 1. Gas Metal Arc Welding (GMAW): Also known as MIG welding, this technique employs a consumable electrode and a shielding gas to safeguard the weld against atmospheric contamination. GMAW is advantageous for welding special steel due to its ability to produce high-quality welds with minimal spatter. 2. Gas Tungsten Arc Welding (GTAW): Also known as TIG welding, this method employs a non-consumable tungsten electrode and a shielding gas to protect the weld. GTAW is frequently employed for special steel as it allows for precise control during the welding process, resulting in defect-free, high-quality welds. 3. Shielded Metal Arc Welding (SMAW): Also known as stick welding, this technique utilizes a consumable electrode coated in flux to shield the weld. SMAW is widely employed for special steel due to its versatility and portability, making it suitable for various positions and environments. 4. Flux-cored Arc Welding (FCAW): This method employs a tubular electrode filled with flux to safeguard the weld. FCAW is often utilized for special steel due to its ability to achieve high deposition rates and deep penetration, making it suitable for thicker materials. 5. Submerged Arc Welding (SAW): This technique employs a continuously fed wire electrode and a granular flux applied around the weld. SAW is commonly used for special steel as it can produce high-quality welds in thick sections. It is crucial to consider various factors, such as the type and thickness of the steel, the desired weld quality, and the specific application requirements, when selecting the appropriate welding method for special steel. Therefore, it is advisable to consult with welding professionals or engineers to determine the most suitable method for a particular project involving special steel.

Q: What are the different impact-resistant grades of special steel?: Impact-resistant grades of special steel refer to steel alloys that are specifically designed to withstand high impact and shock loads without fracturing or deforming. These grades of steel are commonly used in applications where resistance to impact and toughness are crucial, such as in construction, mining, automotive, and defense industries. There are several different impact-resistant grades of special steel available, each with its own unique characteristics and properties. Some of the commonly used impact-resistant grades include: 1. AR400: This grade of steel has a nominal hardness of 400 Brinell (HB) and is known for its exceptional resistance to abrasion and impact. It is often used in applications where high wear resistance is required, such as in bucket liners, crushers, and hoppers. 2. AR500: With a nominal hardness of 500 HB, AR500 steel offers even higher resistance to wear and impact compared to AR400. It is commonly used in applications involving heavy machinery, mining equipment, and armored vehicles. 3. AR600: This grade of steel has a nominal hardness of 600 HB, making it one of the toughest and most impact-resistant steels available. It is often used in applications where extreme wear resistance and durability are essential, such as in chutes, conveyors, and ballistic protection. 4. T-1: T-1 steel is a high-strength, low-alloy (HSLA) steel that offers excellent impact resistance and toughness. It is typically used in applications where high strength and toughness are required, such as in structural components, heavy equipment, and offshore drilling rigs. 5. QT or Quenched and Tempered Steels: These steels are specifically heat-treated to enhance their toughness and impact resistance. They are commonly used in applications that require a combination of high strength, toughness, and impact resistance, such as in gears, shafts, and armor plates. It is important to note that the specific impact resistance of a steel grade depends not only on its composition but also on factors such as heat treatment, fabrication techniques, and design considerations. Therefore, it is crucial to consult with steel manufacturers or experts to determine the most suitable impact-resistant grade for a particular application.

Q: How does special steel contribute to the automotive suspension industry?: Special steel contributes to the automotive suspension industry by providing high strength and durability to suspension components. It allows for lighter and more efficient designs, improving handling, stability, and overall performance of vehicles. Special steel also enhances safety by increasing the ability to absorb and dampen shocks and vibrations, resulting in a smoother and more comfortable ride for passengers.

Q: How does special steel compare to other high-performance materials?: Special steel is known for its exceptional strength, durability, and versatility, which sets it apart from other high-performance materials. Compared to materials like aluminum, titanium, and composites, special steel often exhibits higher tensile strength, making it suitable for applications that require robustness and load-bearing capabilities. Additionally, special steel has excellent resistance to corrosion, heat, and wear, making it ideal for use in harsh environments or high-temperature applications. One advantage of special steel over other high-performance materials is its cost-effectiveness. Compared to materials like titanium, special steel is more affordable, making it a preferred choice for various industries. Moreover, the manufacturing process of special steel allows for customization, enabling the production of a wide range of grades and compositions to suit specific requirements. Special steel also offers excellent machinability and weldability, allowing for easy fabrication and assembly. Its versatility enables it to be used in a wide range of industries, including automotive, aerospace, construction, and energy. From structural components to precision tools, special steel provides a reliable and efficient solution. However, it is important to note that the choice of material depends on the specific application and its requirements. While special steel has numerous advantages, other high-performance materials may be more suitable for certain applications, such as lightweight components or extreme temperature conditions. Therefore, a comprehensive evaluation of the specific needs and characteristics of the application is necessary before determining the most appropriate material.

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