Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- 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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Thickness:
as required
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Length:
as required
Net Weight:
as required
Chemical Composition(%)
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | ≤0.030 | ≤0.030 | ≤0.030 |
Standard
| GB | AISI | DIN | JIS | ISO |
| 42CrMo | 4140 | 42CrMo4 | SCM440 | 42CrMo4 |
Available Size
| Rolled round bar | φ20-120mm × L |
| Forged round bar | φ130-195mm × L |
Heat Treatment
| Item | Temperature℃ | Hardness |
| quenching | 840-880 | HRC32-34 |
| tempering | 580 | |
| quenching | 900 | HRC54-60 |
| tempering | 150-180 |
Characterstics
| The steel with high strength and toughness, hardenability is better also | |||||||
| After conditioning treatment quenching deformation of small | |||||||
| high fatigue limit and repeated impact resistance |
Applications: The steel is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic mold
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: What are the different types of maraging steel?
- Maraging steel is generally classified into three main types: 18% nickel maraging steel, 18% cobalt maraging steel, and 25% nickel maraging steel. These types differ in their composition and properties, making them suitable for various applications.
- Q: How does special steel contribute to the power generation machinery industry?
- The power generation machinery industry greatly benefits from the use of special steel, which plays a vital role in improving the efficiency, reliability, and durability of power generation equipment. To begin with, special steel possesses remarkable mechanical properties, including high strength, toughness, and temperature resistance. These properties make it an excellent choice for manufacturing essential components of power generation machinery, such as turbines, generators, and boilers. The outstanding strength and toughness of special steel enable these components to withstand extreme pressures, temperatures, and harsh operating conditions, guaranteeing the safe and efficient functioning of power plants. Furthermore, special steel alloys can be specifically engineered to resist corrosion, erosion, and wear, which are common challenges faced by power generation equipment. Corrosion occurs due to chemical reactions between metals and the environment, while erosion and wear result from the high-speed flow of steam, water, or gases. By utilizing corrosion-resistant and wear-resistant special steel, power generation machinery can operate for extended periods without significant deterioration, thereby reducing maintenance needs and downtime. Another significant contribution of special steel to the power generation machinery industry is its ability to retain magnetic properties at high temperatures. This is particularly crucial for electrical generators, as it ensures optimal performance and efficiency. Special steel with excellent magnetic properties enables generators to produce electricity with minimal energy losses caused by heat, resulting in increased power output and reduced energy consumption. Moreover, the design flexibility of special steel allows for the production of customized components tailored to the specific requirements of various power generation technologies. For instance, in nuclear power plants, special steel alloys with high resistance to radiation and neutron embrittlement are used for constructing reactor pressure vessels and other critical components. In renewable energy systems like wind turbines, special steel with superior fatigue resistance is utilized to withstand the cyclic loading experienced by turbine blades. In conclusion, special steel plays a crucial role in the power generation machinery industry by improving the efficiency, reliability, and durability of power generation equipment. Its exceptional mechanical properties, corrosion resistance, wear resistance, magnetic properties, and design flexibility make it indispensable for manufacturing components capable of withstanding extreme conditions and ensuring the continuous and efficient generation of electricity.
- Q: What are the properties of tungsten alloys?
- Tungsten alloys have several notable properties. They possess a high melting point, excellent corrosion resistance, and superior strength. These alloys also exhibit remarkable density, making them ideal for use in various applications such as aerospace, defense, and medical industries. Additionally, tungsten alloys have good electrical and thermal conductivity, making them suitable for electrical contacts and heat sinks. Overall, their unique combination of properties makes tungsten alloys highly desirable for high-performance applications.
- Q: What are the different coating techniques used for special steel?
- There are several different coating techniques used for special steel, including electroplating, hot-dip galvanizing, powder coating, and thermal spray coating. Each technique has its own advantages and uses, depending on the desired outcome and the specific properties of the special steel being coated.
- Q: How does special steel contribute to the automotive parts industry?
- Enhanced strength, durability, and performance are crucial attributes that special steel brings to the automotive parts industry. This unique material plays a pivotal role in improving the overall safety, reliability, and efficiency of vehicles. One of the primary benefits of special steel in the automotive parts industry is its ability to withstand extreme conditions, high temperatures, and pressures. This exceptional characteristic makes it perfect for manufacturing vital engine parts like crankshafts, camshafts, and connecting rods, which endure intense mechanical stress and heat. By utilizing special steel, these critical components can withstand the demanding conditions of combustion engines, resulting in enhanced engine performance and longevity. Another significant advantage of special steel is its resistance to corrosion. Automotive parts are exposed to various corrosive elements such as moisture, chemicals, and road salt. With the use of special steel, manufacturers can produce corrosion-resistant parts like exhaust systems, suspension components, and brake rotors, which play a crucial role in maintaining the structural integrity and safety of vehicles over time. Furthermore, special steel offers exceptional formability and weldability, enabling the production of complex automotive parts with precision and ease. This versatility allows manufacturers to create lightweight yet robust components like chassis, body panels, and suspension arms. These components contribute to fuel efficiency, handling, and overall vehicle performance. Additionally, the high tensile strength and toughness of special steel contribute to the safety of vehicles by ensuring the structural integrity of safety-critical parts like steering columns, seat frames, and roll bars. These components play a vital role in protecting occupants during accidents and collisions, making special steel an indispensable material for enhancing overall vehicle safety. In conclusion, the unique properties and characteristics of special steel have a significant impact on the automotive parts industry. Its strength, durability, corrosion resistance, formability, and weldability make it an ideal material for manufacturing critical components in automobiles. By incorporating special steel into various parts, vehicles can achieve improved performance, safety, and reliability while meeting the demands of modern automotive standards.
- Q: How does special steel contribute to the aerospace noise reduction?
- Special steel contributes to aerospace noise reduction in several ways. Firstly, special steel alloys can be used to manufacture components such as aircraft engine parts and exhaust systems that are specifically designed to minimize noise generation. These alloys possess properties like high strength and heat resistance, enabling them to withstand the extreme conditions inside an aircraft engine while reducing noise emissions. Additionally, special steel can be utilized in the construction of aircraft structures and panels. By incorporating specific types of steel with sound-dampening properties, the transmission of noise through the fuselage can be minimized. This helps to reduce the noise experienced by passengers and crew, leading to a quieter and more comfortable flight experience. Furthermore, special steel can be employed in the manufacturing of vibration-damping components within aircraft systems. Vibrations generated by various mechanical systems can contribute to overall noise levels. By utilizing steel alloys with excellent damping properties, these vibrations can be absorbed and minimized, thereby reducing noise levels. In summary, special steel plays a crucial role in aerospace noise reduction by enabling the manufacturing of noise-reducing components, providing sound-dampening properties to aircraft structures, and minimizing vibrations that contribute to overall noise levels.
- Q: How does special steel contribute to the formability of products?
- Special steel, which is also known as alloy steel, plays a vital role in enhancing the formability of products. Various industries, including automotive, aerospace, and construction, find special steel to be an ideal choice due to its unique properties and composition. One way in which special steel contributes to product formability is through its exceptional strength and durability. Engineered to have a higher tensile strength compared to regular steel, special steel can undergo significant deformation without breaking or cracking. This characteristic allows manufacturers to shape and mold the steel into intricate and complex designs, resulting in products with improved formability. Moreover, special steel offers excellent resistance to deformation, specifically elastic deformation. This means that even after enduring significant stress or strain, the steel can return to its original shape, minimizing the risk of permanent deformation. Such a feature proves advantageous in applications where products need to withstand repeated bending or shaping without compromising their structural integrity. Additionally, special steel often contains specific alloying elements like chromium, nickel, or molybdenum, which further enhance its formability. These alloying elements improve the steel's ability to be easily formed and manipulated, making it more ductile and minimizing the chances of cracking during the forming process. Furthermore, special steel can undergo heat treatment to modify its mechanical properties and enhance its formability. Annealing or quenching are some of the heat treatment processes that can make the steel more malleable, allowing for easy shaping and forming into desired products. In conclusion, special steel plays a critical role in enhancing product formability due to its exceptional strength, resistance to deformation, inclusion of alloying elements, and heat-treatability. These properties enable manufacturers to create products with intricate designs and complex shapes, fulfilling the diverse needs of various industries while ensuring durability and structural integrity.
- Q: What are the different non-destructive testing techniques used for special steel?
- There are several non-destructive testing (NDT) techniques that are commonly used for special steel to ensure its quality and integrity without causing any damage. These techniques are essential in industries where special steel is used, such as aerospace, automotive, and construction, to ensure that the material meets the required specifications and standards. Some of the commonly used NDT techniques for special steel are: 1. Ultrasonic Testing (UT): This technique involves the use of high-frequency sound waves to detect internal flaws, such as cracks, voids, or inclusions, in special steel. UT is highly effective in detecting subsurface defects and is widely used due to its versatility and accuracy. 2. Magnetic Particle Testing (MT): MT is a technique that uses magnetic fields and iron particles to detect surface or near-surface defects in special steel. It is particularly useful in identifying defects like cracks, seams, or laps, as the magnetic particles will accumulate at these locations, making them visible under proper lighting conditions. 3. Liquid Penetrant Testing (PT): PT is a widely-used method for detecting surface defects in special steel. It involves applying a liquid penetrant to the surface of the material, which seeps into any surface cracks or defects. After a specified time, the excess penetrant is removed, and a developer is applied to make the defects visible. 4. Eddy Current Testing (ET): ET utilizes electromagnetic induction to detect surface or near-surface defects in special steel. It is particularly useful in detecting cracks, corrosion, or metal loss in conductive materials. ET is a fast and accurate method, making it suitable for high-speed production environments. 5. Radiographic Testing (RT): RT involves the use of X-rays or gamma rays to examine the internal structure of special steel. It can detect various defects, including porosity, inclusions, and cracks. RT provides detailed images that help identify the location, size, and severity of defects. 6. Visual Testing (VT): VT is a simple yet crucial technique that involves a visual examination of the surface of special steel. It helps identify surface defects like scratches, dents, or corrosion. Although VT is not as sensitive as other NDT techniques, it is often used as a preliminary inspection method. Each of these non-destructive testing techniques has its own advantages and limitations. The selection of the appropriate technique depends on factors such as the type and size of the special steel, the required inspection depth, and the specific defects that need to be detected. By using a combination of these techniques, manufacturers and inspectors can ensure the quality and reliability of special steel products.
- Q: How does special steel contribute to the electrical industry?
- Special steel plays a crucial role in the electrical industry by providing the necessary materials for the production of various electrical components and infrastructure. It offers high strength, thermal resistance, and corrosion resistance, making it ideal for manufacturing transformers, power generators, electrical motors, and transmission lines. Additionally, special steel enables the development of advanced electrical technologies, such as superconductors and magnetic materials, which enhance the efficiency and performance of electrical systems. Overall, special steel contributes to the electrical industry by ensuring the reliability, durability, and innovation of electrical equipment and infrastructure.
- Q: What is the purpose of cold drawing in special steel production?
- The purpose of cold drawing in special steel production is to improve the mechanical properties and dimensional accuracy of the steel. Cold drawing involves pulling the steel through a die at room temperature, which reduces the cross-sectional area and increases the length of the steel. This process helps to refine the microstructure of the steel, resulting in improved strength, hardness, and toughness. Additionally, cold drawing can enhance the surface finish and straightness of the steel, ensuring precise dimensions and making it suitable for various applications where high-quality steel is required. Overall, cold drawing plays a crucial role in enhancing the performance and quality of special steel, making it more reliable and efficient in various industrial sectors.
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Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- Loading Port:
- China main port
- 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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