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

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

4, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

WE provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Q:Can special steel be used for making nuclear industry components?: Yes, special steel can be used for making nuclear industry components. Special steel, also known as alloy steel, possesses certain properties that make it suitable for use in the nuclear industry. These properties include high strength, excellent corrosion resistance, and good resistance to high temperatures and radiation. Nuclear industry components, such as reactor pressure vessels, steam generators, and fuel rods, operate under extreme conditions of high pressure, high temperature, and exposure to radiation. Special steel can withstand these conditions and maintain its structural integrity, ensuring the safe and reliable operation of nuclear facilities. The use of special steel in the nuclear industry also helps to prevent the release of radioactive materials. The high corrosion resistance of special steel reduces the risk of leakage and contamination, thereby enhancing the safety of nuclear power plants. Furthermore, special steel can be tailored to meet specific requirements of the nuclear industry. Different types of special steel alloys can be developed with specific compositions and heat treatments to optimize their properties for nuclear applications. This allows for the customization of steel components to meet the unique demands of the nuclear industry. In conclusion, special steel can indeed be used for making nuclear industry components due to its high strength, corrosion resistance, and resistance to high temperatures and radiation. Its use contributes to the safety and reliability of nuclear facilities, while also allowing for customization to meet specific requirements.

Q:How is special steel used in the food processing industry?: Special steel is commonly used in the food processing industry due to its unique properties such as corrosion resistance and high strength. It is used to manufacture various equipment and components such as knives, blades, cutting tools, mixing machines, and conveyor belts. These specialized steel products ensure food safety, improve processing efficiency, and maintain high hygiene standards in the industry.

Q:How does special steel perform in terms of thermal conductivity?: Special steel typically has lower thermal conductivity compared to other materials. This means that it is not as efficient in conducting heat and may retain heat for longer periods of time.

Q:How does special steel contribute to the chemical processing aftermarket industry?: Special steel plays a crucial role in the chemical processing aftermarket industry by offering a wide range of benefits that enhance the overall efficiency and performance of chemical processing equipment. Firstly, special steel is renowned for its exceptional strength and durability, making it ideal for applications that involve high pressure, extreme temperatures, and corrosive environments. This durability ensures that the equipment can withstand the challenging conditions and operate reliably for extended periods, reducing the frequency of maintenance and replacement. Furthermore, special steel possesses excellent resistance to corrosion, oxidation, and chemical reactions, which are common challenges in the chemical processing industry. This resistance enables the equipment to handle a wide variety of chemicals without deteriorating or contaminating the process, thus ensuring the quality and safety of the end products. Additionally, special steel can withstand the formation of scale, deposits, and other contaminants that can hinder the efficiency of the equipment, thereby reducing the need for frequent cleaning and maintenance. Moreover, special steel offers superior mechanical properties such as toughness, hardness, and impact resistance, which are essential for handling and processing heavy loads and abrasive materials. This ensures that the equipment can withstand the demanding operational conditions and maintain its performance over time, resulting in enhanced productivity and reduced downtime. Another significant contribution of special steel to the chemical processing aftermarket industry is its versatility. It can be customized and tailored to meet specific requirements, allowing for the manufacturing of complex parts and components that are essential for various chemical processes. Special steel can be fabricated into different shapes and sizes, enabling the creation of intricate designs and structures that optimize the efficiency and effectiveness of the equipment. In conclusion, special steel is a vital component in the chemical processing aftermarket industry due to its exceptional strength, durability, resistance to corrosion and chemical reactions, as well as its versatility. By providing reliable and high-performance equipment, special steel contributes significantly to the overall efficiency, safety, and productivity of chemical processing operations.

Q:How does special steel contribute to the construction equipment industry?: Special steel plays a crucial role in the construction equipment industry by providing the necessary strength, durability, and resistance to wear and tear that is required in heavy-duty equipment. Construction equipment is subjected to extreme conditions, including heavy loads, harsh environments, and constant use. Special steel alloys are specifically designed to withstand these conditions and ensure the longevity and reliability of the equipment. One of the key contributions of special steel to the construction equipment industry is its high strength-to-weight ratio. This allows manufacturers to design and produce equipment that is both strong and lightweight. The use of special steel in the construction of equipment components such as chassis, booms, buckets, and blades increases their load-carrying capacity and improves overall performance. Special steel also offers excellent resistance to corrosion, which is a significant advantage in construction sites that expose equipment to moisture, chemicals, and other corrosive substances. By using corrosion-resistant special steel alloys, manufacturers can prolong the lifespan of construction equipment and reduce maintenance costs. Furthermore, special steel contributes to the construction equipment industry by providing superior wear resistance. Construction equipment is subjected to abrasive materials such as rocks, gravel, and concrete, which can cause significant wear on the equipment's components. Special steel alloys with high hardness and wear resistance properties help minimize wear and extend the equipment's service life, reducing the need for frequent replacements and downtime. In addition, special steel enables the construction equipment industry to meet specific performance requirements. Different types of special steel alloys can be tailored to meet specific needs such as impact resistance, high-temperature resistance, or low-temperature toughness. This versatility allows manufacturers to produce equipment that can operate efficiently in a wide range of conditions, enhancing the industry's overall productivity. Overall, special steel contributes significantly to the construction equipment industry by providing the necessary strength, durability, resistance to wear and tear, and customization options. By utilizing special steel alloys, manufacturers can produce high-quality equipment that meets the demanding requirements of construction sites, ultimately improving productivity, safety, and efficiency in the industry.

Q:How does special steel contribute to the manufacturing of surgical instruments?: Special steel, which is also known as stainless steel, plays a vital role in the production of surgical instruments. Its exceptional properties make it an ideal material for manufacturing high-quality surgical instruments used in various medical procedures. To begin with, special steel exhibits a high resistance to corrosion and rust. Surgical instruments are constantly exposed to bodily fluids, sterilization processes, and harsh cleaning agents. The corrosion resistance of special steel guarantees the durability of these instruments, enabling them to withstand repeated use and cleaning without compromising their integrity. Furthermore, special steel possesses excellent strength and hardness characteristics. Surgical instruments must be robust and capable of withstanding the forces and pressures exerted during surgeries. The high strength and hardness of special steel ensure that these instruments retain their shape and sharpness even after multiple uses, minimizing the risk of breakage or deformation during critical procedures. Moreover, special steel is biocompatible, meaning it does not elicit reactions or complications when in contact with bodily tissues or fluids. This is particularly important for surgical instruments that come into direct contact with patients' bodies. The biocompatibility of special steel guarantees that there are no adverse reactions or complications when these instruments are used in surgeries, thereby reducing the risk of infections or other complications. In addition, special steel is highly machinable and can be easily molded into intricate shapes and designs. Surgical instruments require precision and accuracy to effectively fulfill their intended functions. The machinability of special steel allows manufacturers to create complex instruments with fine details and features, ensuring their optimal performance during surgical procedures. Furthermore, special steel can be efficiently sterilized. Sterilization is a critical step in ensuring the safety and effectiveness of surgical instruments. Special steel's ability to withstand high temperatures and various sterilization methods, such as autoclaving or ethylene oxide gas sterilization, makes it an ideal choice of material for surgical instruments. In conclusion, special steel significantly contributes to the manufacturing of surgical instruments due to its corrosion resistance, strength, biocompatibility, machinability, and sterilization capabilities. These properties guarantee that surgical instruments made from special steel are durable, reliable, safe, and effective in medical procedures, ultimately enhancing the success of surgeries and improving patient outcomes.

Q:How does special steel perform in terms of creep resistance at elevated temperatures?: Special steel is renowned for its outstanding ability to withstand creep deformation at high temperatures. Creep refers to the gradual distortion of a material under constant stress over an extended period of time at elevated temperatures. Special steel, specially designed to endure high temperatures, possesses an impressive capacity to resist creep and retain its structural integrity. The extraordinary creep resistance of special steel is attributed to its distinctive composition, which incorporates various alloying elements like chromium, molybdenum, and vanadium. These alloying elements enhance the steel's strength at high temperatures, augment its resistance to deformation, and hinder the formation of detrimental changes in its microstructure that can occur during creep. Moreover, special steel undergoes specific heat treatment procedures such as quenching and tempering, which further enhance its resistance to creep deformation. These procedures refine the steel's microstructure, resulting in a material that is fine-grained and uniform, enabling it to endure deformation even when exposed to high temperatures for extended periods. The exceptional creep resistance of special steel makes it the preferred choice in various industries that operate under high-temperature conditions, including power generation, petrochemicals, and aerospace. It provides extended service life, reduced maintenance requirements, and enhanced safety in critical applications where failure due to creep deformation could have severe consequences. In conclusion, special steel demonstrates remarkable performance in terms of its ability to resist creep deformation at high temperatures. Its distinct composition, including alloying elements and specific heat treatment procedures, empowers it to withstand deformation and maintain its structural integrity even under prolonged exposure to elevated temperatures.

Q:What is the difference between special steel and regular steel?: Special steel refers to a specific type of steel that has been enhanced with additional alloying elements or has undergone specialized treatments to enhance its strength, durability, or other desired properties. Regular steel, on the other hand, refers to common or standard steel that does not possess these additional features or improvements. The key difference lies in the composition and processing, as special steel is engineered to meet specific requirements for particular applications, such as high-temperature resistance, corrosion resistance, or increased hardness.

Q:What are the different quenching techniques used for special steel?: There are several quenching techniques used for special steel, including oil quenching, water quenching, polymer quenching, and air quenching. Each technique has its own advantages and disadvantages and is chosen based on the specific requirements of the steel being quenched. Oil quenching provides a slower cooling rate, resulting in reduced risk of cracking and distortion. Water quenching, on the other hand, provides a rapid cooling rate, making it suitable for achieving maximum hardness. Polymer quenching offers a controlled cooling rate, allowing for the desired balance between hardness and toughness. Air quenching is the slowest cooling method, providing the least hardness but also the least risk of distortion. The choice of quenching technique depends on the desired properties of the special steel and the specific application it will be used for.

Q:What are the main applications of special steel in the marine sector?: Special steel is widely used in the marine sector for various applications. Some of the main applications include the construction of ship hulls, offshore platforms, and marine structures. Special steel's high strength, corrosion resistance, and durability make it suitable for withstanding harsh marine environments. Additionally, special steel is used in propeller shafts, rudders, and other critical components, ensuring efficient and reliable performance of marine vessels.

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