• Hot Rolled Steel Bar AISI 4140 Steel Bar System 1
  • Hot Rolled Steel Bar AISI 4140 Steel Bar System 2
  • Hot Rolled Steel Bar AISI 4140 Steel Bar System 3
Hot Rolled Steel Bar AISI 4140 Steel Bar

Hot Rolled Steel Bar AISI 4140 Steel Bar

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Item specifice

Type:
Alloy Steel
Shape:
Steel Round Bar

Hot Rolled Steel Bar AISI 4140 Steel Bar

Product Information:

1:hot rolled steel bar 4140/ SCM440/4130/1045
2:size:20-250mm
3: length:5.8-6m,black surface
4:high quality,competitive price

Product Overviews:

Product NameTypical GradesDiameter(mm)Standard adopted
Carbon Steel20 (1020/S20C/C22)Ø16-Ø300GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing SteelGCr9 (51100/SUJ1)Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel20Cr (5120/SCr420H/20Cr4)Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel20CrNiMoØ16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Product Show:

Hot Rolled Steel Bar AISI 4140 Steel Bar

Our Advantages:

· Industry experience over 20 years.

· Shipment of goods -More than 70 countries worldwide.

· The most convenient transport and prompt delivery.

· Competitive price with best service.

· High technical production line with top quality products.

· High reputation based on best quality products.

 

With our experienced, enthusiastic and dynamic staffs, we assure to bring you the products with best quality, reasonable prices and good after-sales services under the motto: Friends First, Business After.

Communication, Experience, Expertise and Best efforts are our Promises to you.


Q:How is maraging steel used in the production of rocket and missile components?
Maraging steel is commonly used in the production of rocket and missile components due to its exceptional strength, toughness, and resistance to corrosion. Its unique properties allow for the creation of lightweight yet highly durable parts, such as rocket nozzles, casings, and guidance systems. Additionally, maraging steel can withstand extreme temperatures and pressures, making it suitable for the demanding conditions of space and military applications.
Q:Can special steel be used in food processing applications?
Yes, special steel can be used in food processing applications. Special steel, such as stainless steel, is commonly used in the food industry due to its excellent corrosion resistance, hygienic properties, and durability. It is safe for food contact, easy to clean, and does not react with acidic or alkaline substances.
Q:Is special steel suitable for manufacturing precision components?
Manufacturing precision components can greatly benefit from the use of special steel. This type of steel is specifically designed to possess exceptional qualities such as high strength, hardness, and resistance to wear, corrosion, and heat. These outstanding characteristics make it the perfect choice for creating precision components that demand tight tolerances, accuracy, and reliability. The inherent strength and hardness of special steel enable the production of durable and long-lasting precision components. This is particularly crucial in industries where components are exposed to intense stress and heavy loads, such as aerospace, automotive, and machinery manufacturing. The wear and corrosion resistance of special steel ensures that the precision components can withstand harsh operating conditions and retain their functionality over extended periods of time. Moreover, special steel's remarkable heat resistance qualifies it for precision components that encounter elevated temperatures. This is especially significant in industries like aerospace and power generation, where components must endure extreme heat without compromising their performance. In addition, special steel offers excellent machinability, which is vital for manufacturing precision components with intricate designs and complex geometries. It can be easily shaped, cut, and formed into various sizes and shapes, enabling the production of intricate and precise components. Overall, the exceptional properties of special steel, including high strength, hardness, resistance to wear, corrosion, and heat, along with its superb machinability, make it highly suitable for manufacturing precision components. Its utilization guarantees the creation of high-quality components that adhere to the stringent requirements of precision applications.
Q:How does special steel contribute to the renewable energy storage?
Special steel plays a crucial role in renewable energy storage by enabling the production of high-performance components for energy storage systems. It is used in the manufacturing of batteries, such as lithium-ion batteries, which are widely utilized in renewable energy storage applications. Special steel provides the necessary strength, durability, and resistance to corrosion, ensuring the longevity and efficiency of these batteries. Additionally, special steel is essential for the construction of renewable energy infrastructure, including wind turbines and solar panel frames, which require sturdy and reliable materials to withstand harsh environmental conditions. Therefore, special steel contributes significantly to the development and advancement of renewable energy storage solutions.
Q:How does special steel contribute to reducing product weight while maintaining strength?
Special steel, such as high-strength low-alloy (HSLA) steel, contributes to reducing product weight while maintaining strength through its unique properties. Special steel is engineered to have a higher strength-to-weight ratio compared to traditional steel, allowing manufacturers to use less material without compromising strength. The use of special steel enables the production of lighter and more efficient products, which can have significant benefits in various industries such as automotive, aerospace, and construction.
Q:What are the challenges in machining high-speed special steel?
Several challenges arise when machining high-speed special steel due to its unique properties and characteristics. Its extreme hardness presents one of the main obstacles, making cutting and shaping difficult. High-speed special steel typically has a high carbon content and undergoes heat treatment to enhance its hardness, resulting in increased wear on cutting tools. The increased hardness of this steel also leads to elevated heat generation during the machining process. This heat can cause thermal distortion and impact the dimensional accuracy of the final product. To counteract this, specialized cooling techniques and cutting tools with advanced coatings must be used to dissipate heat and maintain stability. Another challenge is the brittleness of high-speed special steel. It tends to have low toughness and is susceptible to cracking and chipping during machining operations. To minimize the risk of tool failure and excessive stress, careful selection of cutting parameters such as cutting speed, feed rate, and depth of cut is necessary. Furthermore, high-speed special steel often contains alloying elements like tungsten, vanadium, and cobalt, which can further complicate the machining process. While these elements increase the strength and wear resistance of the steel, they also make it more challenging to machine. Effective machining of these alloys and achieving desired surface finishes requires specialized tool materials and cutting strategies. Additionally, the cost of high-speed special steel is often significantly higher than that of conventional steels, adding to the challenges of machining. The high tooling costs associated with the cutting tools required for machining this steel can be a substantial investment. Overall, machining high-speed special steel necessitates advanced cutting techniques, specialized tooling, and careful consideration of cutting parameters to overcome the challenges posed by its extreme hardness, brittleness, and alloying elements.
Q:What are the different welding methods used for special steel?
There are several welding methods used for special steel, including Tungsten Inert Gas (TIG) welding, Metal Inert Gas (MIG) welding, Shielded Metal Arc Welding (SMAW), Flux-Cored Arc Welding (FCAW), and Submerged Arc Welding (SAW). These methods are chosen based on factors such as the type of steel, joint design, thickness, and desired welding quality.
Q:How is shock-resistant alloy steel used in the production of impact-resistant parts?
Shock-resistant alloy steel is used in the production of impact-resistant parts due to its unique properties that make it highly resistant to deformation and fracture under high impact loads. The alloy steel's composition includes elements such as chromium, nickel, and molybdenum, which enhance its toughness and durability. These properties allow the alloy steel to absorb and disperse the energy generated during impact, effectively protecting the parts from damage. Additionally, the shock-resistant alloy steel's high strength enables it to withstand repeated impacts without losing its structural integrity, making it an ideal material for manufacturing impact-resistant parts used in various industries, including automotive, aerospace, and construction.
Q:How does special steel perform in high-temperature oxidation?
Special steel is specifically designed to have excellent performance in high-temperature oxidation. It has the ability to resist oxidation and maintain its mechanical properties even at elevated temperatures, making it highly reliable and durable in such conditions.
Q:How is special steel used in the construction manufacturing process?
Special steel is used in the construction manufacturing process for its unique properties such as high strength, durability, and resistance to corrosion. It is commonly used to fabricate structural components, reinforcement bars, and other critical elements in buildings, bridges, and infrastructure projects. Additionally, special steel alloys are utilized in the production of specialized tools and machinery used in the construction industry.

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