40Cr / 41Cr4 / 5140 alloy steel specifications
- 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
40Cr / 41Cr4 / 5140 alloy steel specifications
Product Description:
1. Standards
GB 40Cr, 40X, ASTM 5140, BS 520M40, JIS SCR440, NF 42C4, DIN 41Cr4(1.7035)
2. Size:
Round steel bar: Dia. 8-10000mm
Flat steel bar: 10-600*205*1500mm
Length: <12m
3. Machine Capability
Tensile strength (N/mm2Mpa): >=835
Elongation %: >=10
Yield strength: >=540
Hardness: HBS<=179
Reduction of area: >=40%
4. Machinability
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.
5. Welding
Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.
6. Process:
EAF+LF+VD+ Forged+ Heat Treatment (Annealed, A Normalized, Q+T)
7. Inspection
100% Ultrasonic according to the test standards: SEP1921-84, GR. 3 CLASS C/C
Chemical Composition:
Chemical Composition(for reference only) (%) | |||||||
C | Si | Mn | Cr | Ni | P | S | Cu |
0.37~0.44 | 0.17~0.37 | 0.50~0.80 | 0.8~1.1 | ≤ 0.03 | ≤ 0.035 | ≤ 0.035 | ≤ 0.30 |
Application:
(1) Generally used for producing the important parts with high strength and good plastic.
(2) After nitrogen treatment, used for producing the important parts with special performance
requirements, such as shafts, gears, fasteners, bolt of large dia steamer etc.
Product Show：
- Q: What are the advantages of using special steel in manufacturing?
- Special steel in manufacturing offers several advantages. Firstly, it provides a higher level of strength and durability compared to regular steel. This is because of the presence of alloying elements, like chromium, nickel, and manganese, which enhance its mechanical properties. As a result, special steel can withstand heavy loads, resist wear and tear, and endure extreme conditions, making it ideal for manufacturing applications requiring strength and longevity. Secondly, special steel exhibits excellent corrosion resistance. The addition of elements like chromium forms a protective oxide layer on the steel's surface, preventing rusting and corrosion when exposed to moisture or harsh environments. This corrosion resistance is crucial in industries such as marine, automotive, and construction, where materials face constant exposure to water, salt, and chemicals. Furthermore, special steel possesses exceptional heat resistance and heat transfer properties. These properties are vital in manufacturing processes involving high temperatures, such as forging, casting, and heat treatment. Special steel retains its strength and structural integrity even at elevated temperatures, enabling the production of components capable of withstanding extreme heat conditions. Another advantage of using special steel in manufacturing is its versatility. It can be easily customized and tailored to specific requirements. Manufacturers can modify it to exhibit various mechanical properties, including hardness, toughness, or flexibility, depending on the application. This flexibility allows for the development of components with precise characteristics, ensuring optimal performance and efficiency. Lastly, special steel proves to be more cost-effective in the long run. Although initial costs may be higher than regular steel, its superior durability and longevity result in reduced maintenance and replacement costs. Additionally, the enhanced properties of special steel can lead to improved energy efficiency and reduced material waste, contributing to overall cost savings in the manufacturing process. In conclusion, the utilization of special steel in manufacturing brings forth benefits such as increased strength and durability, excellent corrosion resistance, superior heat resistance, versatility, and long-term cost-effectiveness. These advantages make it the preferred choice for various industries, guaranteeing the production of high-quality and reliable components.
- Q: What are the different surface hardening techniques for special steel parts?
- Some of the different surface hardening techniques for special steel parts include case hardening, nitriding, carburizing, induction hardening, and flame hardening.
- Q: What are the properties of wear-resistant tool steel?
- Wear-resistant tool steel is characterized by its high hardness, strength, and resistance to abrasion and wear. It has a high carbon content, typically ranging from 0.7% to 1.5%, which contributes to its hardness and wear resistance. This type of steel is also known for its ability to retain its hardness even at high temperatures, making it suitable for applications that involve friction and heat. Additionally, wear-resistant tool steel usually exhibits good toughness and machinability, allowing it to withstand heavy usage and be easily shaped into various tool forms.
- Q: How does special steel contribute to the heat resistance of products?
- Special steel contributes to the heat resistance of products by offering superior mechanical properties that allow them to withstand high temperatures without deforming or losing their structural integrity. The unique composition and manufacturing process of special steel result in enhanced heat resistance, making it an ideal material for applications exposed to extreme heat conditions. Special steel is designed to have a high melting point, which means it can endure higher temperatures compared to standard steel. This is achieved by incorporating alloying elements such as chromium, nickel, molybdenum, or vanadium, which improve the steel's ability to withstand heat. These elements form stable oxide layers on the surface of the steel, acting as a barrier against oxidation and preventing the steel from losing strength or becoming brittle when exposed to high temperatures. Furthermore, special steel is often treated with heat-resistant coatings or undergoes specialized heat treatment processes to enhance its heat resistance even further. These treatments can include quenching and tempering, annealing, or precipitation hardening, depending on the specific requirements of the product. These processes alter the steel's microstructure, improving its resistance to thermal fatigue, creep, and thermal shock. The heat resistance provided by special steel allows for the creation of products that can operate in demanding environments such as aerospace, automotive, power generation, and industrial applications. For instance, in the aerospace industry, special steel is used to manufacture components like turbine blades that are exposed to extremely high temperatures in jet engines. In the automotive industry, it is utilized for manufacturing exhaust systems and engine components that need to withstand intense heat from combustion processes. In summary, special steel contributes to the heat resistance of products by offering a higher melting point, improved oxidation resistance, and enhanced mechanical properties that allow them to maintain their structural integrity and functionality even under extreme heat conditions. This makes special steel an essential material for various industries seeking reliable and durable solutions that can withstand high temperatures.
- Q: How does special steel resist oxidation?
- The outstanding resistance to oxidation exhibited by special steel is well-known. This is mainly attributed to the inclusion of elements like chromium, nickel, and manganese in its composition. These elements combine to create a passive film, known as a protective layer, on the steel's surface. This film effectively shields the steel from oxygen and moisture. Chromium is the principal element responsible for the oxidation resistance of special steel. It undergoes a reaction with atmospheric oxygen, resulting in the formation of a thin layer of chromium oxide on the steel's surface. This oxide layer is exceptionally stable and prevents any further oxidation of the underlying metal. It acts as a protective shield, hindering the penetration of oxygen and moisture into the steel, which could otherwise lead to corrosion or rusting. Moreover, nickel and manganese also contribute to the oxidation resistance of special steel. They assist in stabilizing the passive film created by chromium oxide and enhance its protective properties. These elements also bolster the steel's ability to withstand high temperatures and corrosive environments. Furthermore, the composition and processing techniques employed in the production of special steel play a vital role in its oxidation resistance. The steel is often subjected to heat treatment processes, such as annealing or quenching, which further enhance its resistance to corrosion. Through meticulous control of alloying elements and precise heat treatment procedures, a robust and long-lasting passive film is formed. In conclusion, special steel's ability to resist oxidation is primarily due to the presence of chromium, nickel, and manganese, which collaborate to create a protective layer on its surface. This passive film acts as a barrier against oxygen and moisture, effectively preventing corrosion and rusting. Additionally, the composition and processing techniques utilized during production significantly contribute to the exceptional oxidation resistance of special steel.
- Q: How does special steel contribute to the automotive sector?
- Special steel plays a significant role in the automotive sector by contributing to the manufacturing and performance of various automotive components. It offers several benefits that enhance the overall quality, durability, and safety of vehicles. Firstly, special steel is known for its exceptional strength and toughness. This makes it ideal for producing critical automotive parts such as engine components, chassis, suspension systems, and safety reinforcements. These components require high strength to withstand the stresses and strains experienced during vehicle operation, ensuring the safety of passengers. Furthermore, special steel provides excellent resistance to wear, corrosion, and high-temperature environments. This makes it suitable for manufacturing parts like gears, bearings, shafts, and exhaust systems, which are exposed to harsh conditions. The use of special steel in these components improves their lifespan, reliability, and overall performance, reducing maintenance and replacement costs for vehicle owners. Moreover, special steel enables the lightweighting of vehicles. Automakers are constantly striving to reduce the weight of vehicles to enhance fuel efficiency and reduce emissions. Special steel alloys, such as high-strength low-alloy (HSLA) steel, offer a unique combination of strength and lightweight properties, allowing manufacturers to design lighter and more fuel-efficient vehicles without compromising on safety or performance. In addition to its mechanical properties, special steel also contributes to the automotive sector through its versatility in manufacturing processes. It can be easily formed, welded, and machined, enabling complex shapes and designs for automotive parts. This flexibility enhances the design possibilities and allows for innovative solutions to meet the evolving needs of the automotive industry. Overall, special steel plays a crucial role in the automotive sector by providing strength, durability, and lightweight properties to various components. Its use in critical parts ensures the safety of vehicles and passengers, while its resistance to wear and corrosion improves the longevity and performance of automotive systems. With the constant drive for fuel efficiency and innovation in the automotive industry, special steel continues to be an essential material in shaping the future of automobiles.
- Q: What are the different methods of improving the wear resistance of special steel?
- There are several methods that can be employed to improve the wear resistance of special steel. Firstly, heat treatment techniques such as quenching and tempering can be used. Quenching involves rapidly cooling the steel in a liquid medium, such as oil or water, to increase its hardness. This process forms a hardened surface layer that can resist wear. Tempering, on the other hand, involves reheating the quenched steel to a specific temperature and then cooling it slowly. This helps to reduce the brittleness caused by quenching and improve the steel's toughness, which is important for wear resistance. Another method is through alloying. Adding elements such as chromium, manganese, or vanadium to the steel can significantly enhance its wear resistance. These alloying elements form carbides, nitrides, or borides, which increase the hardness and improve the material's ability to resist wear and abrasion. Surface treatment techniques like carburizing or nitriding can also be employed. Carburizing involves introducing carbon into the steel's surface by heating it in a carbon-rich atmosphere. This forms a hardened surface layer with a high carbon content, making the steel more wear-resistant. Nitriding, on the other hand, involves diffusing nitrogen into the steel's surface, forming nitrides that increase hardness and wear resistance. Furthermore, physical vapor deposition (PVD) or chemical vapor deposition (CVD) coatings can be applied to the steel surface. PVD involves depositing a thin layer of wear-resistant material, such as titanium nitride or diamond-like carbon, onto the steel's surface using a vacuum process. CVD, on the other hand, involves depositing a wear-resistant coating by chemical reactions at elevated temperatures. These coatings provide an additional layer of protection against wear and friction. Lastly, the grain size of the steel can be controlled through processes like grain refinement or severe plastic deformation. Smaller grain sizes typically result in increased hardness and improved wear resistance. Overall, a combination of these methods can be used to enhance the wear resistance of special steel, depending on the specific application and desired properties.
- Q: How does special steel contribute to the electrical industry?
- Special steel plays a crucial role in the electrical industry by contributing to the production of various components and equipment necessary for generating, transmitting, and distributing electricity. One important application of special steel in the electrical industry is in the manufacturing of power transformers. These transformers are essential for stepping up or stepping down the voltage levels in the electricity grid, enabling efficient transmission and distribution of electricity. Special steel, with its high strength, durability, and excellent magnetic properties, is used to construct the transformer cores. The high magnetic permeability of special steel ensures minimal energy loss during the transformation process, resulting in more efficient power transmission. Furthermore, special steel is also extensively used in the production of electrical conductors, such as wires and cables. These conductors are responsible for carrying electricity from power plants to various end-use applications. Special steel wires are known for their high conductivity and resistance to corrosion, making them ideal for transmitting electricity over long distances with minimal energy loss. Additionally, special steel is used in the manufacturing of electrical connectors and terminals, ensuring secure and reliable connections between different electrical components. In the electrical industry, special steel is also employed in the fabrication of electrical motors and generators. The high strength and magnetic properties of special steel contribute to the efficient conversion of electrical energy into mechanical energy, enabling the smooth operation of motors and generators. Moreover, special steel is used for manufacturing electrical switches, circuit breakers, and other protective devices, ensuring the safe and reliable functioning of electrical systems. Overall, special steel plays a vital role in the electrical industry by facilitating the production of essential components and equipment necessary for the generation, transmission, and distribution of electricity. Its unique properties contribute to improved energy efficiency, reliability, and safety in electrical systems, making it an indispensable material in this industry.
- Q: How does special steel compare to other high-performance materials?
- Special steel, being a high-performance material itself, offers several advantages over other high-performance materials. Its exceptional strength, durability, and resistance to corrosion make it a preferred choice in various industries. Furthermore, special steel can withstand extreme temperatures and pressures, making it ideal for applications that demand reliability and performance under challenging conditions. In terms of cost-effectiveness, special steel often proves to be more economical compared to other high-performance materials. Overall, special steel's unique combination of properties sets it apart and makes it a reliable and versatile option in comparison to other high-performance materials.
- Q: How does special steel contribute to reducing product waste during manufacturing?
- Special steel contributes to reducing product waste during manufacturing by offering superior strength, durability, and corrosion resistance. Its unique properties allow manufacturers to produce components that are longer-lasting and more resistant to wear and tear. This reduces the need for frequent replacements or repairs, ultimately minimizing product waste and increasing overall efficiency in the manufacturing process.
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40Cr / 41Cr4 / 5140 alloy steel specifications
- 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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